Qualification: 
Ph.D, MBA, M.E, BE

Dr. V. Jayakumar currently serves as Professor and Chairperson in the Department of Mechanical Engineering, Amrita School of Engineering, Amrita Vishwa Vidyapeetham, Chennai Campus.

Academic Qualifications

2011 PhD
Anna University, CEG Main Campus, Chennai
Dissertation Title: An Adaptive Cellular Manufacturing System Design under Dynamic and Stochastic Production Requirements Using Simulated Annealing Algorithm.
2000 M. E. Industrial Engineering - First Class with Distinction
Thiayagarajar College of Engineering, Madurai Affiliated to Madurai Kamarai University, Madurai
1997 B. E. Mechanical Engineering - First Class with Distinction
Madras University, Chennai
2000 MBA (Marketing and Systems) - Off-Campus Study
Madurai Kamaraj University, Madurai
Other Diploma Studies Underwent Post Graduate Diploma in Operations Research (PGDOR) – Pondicherry University, Pondicherry – Off-Campus Study 
Diploma in Rail Transport & Management (DRTM) – Institute of Rail Transport, Rail Bhavan, New Delhi – Off-Campus Study 
Diploma in Transport Economics & Management (DTEM) – Institute of Rail Transport, Rail Bhavan, New Delhi – Off-Campus Study

Academic Experience

July 2021 to Present Professor & Chairperson, Department of Mechanical Engineering, Amrita School of Engineering, Chennai Campus
May 2019 to June 2021 Associate Professor & Chairperson, Department of Mechanical Engineering, Amrita School of Engineering, Chennai Campus
July 2015 to April 2019 Professor, Department of Mechanical Engineering, Saveetha School of Engineering, Saveetha University, Chennai
January 2012 to July 2015 Faculty Member, Mechanical and Industrial Engineering Section, Ibri College of Technology, Ministry of Manpower, SULTANATE OF OMAN
April 2010 to December 2011 Associate Professor, Design Division, Department of Mechanical Engineering, School of Mechanical and Building Sciences, VIT University, Vellore
June 2007 to April 2010 Assistant Professor, Department of Mechanical Engineering, Velammal Engineering College, Chennai
February 2005 to January 2007 Assistant Professor (under UNDP program), Department of Mechanical Engineering, Eritrean Institute of Technology, Ministry of Education, THE STATE OF ERITREA
September 2002 to July 2004 Lecturer (under UNDP program), Department of Mechanical Engineering, Faculty of Technology, Jimma University, Jimma, ETHIOPIA
July 1997 to September 2002 Lecturer & Senior Lecturer, Department of Mechanical Engineering, Priyadarshini Engineering College affiliated to Madras University

Awards & Achievements

  1. IET CLN Exemplary Teacher Award at IET CLN & YP AWARDS 2016-2017 from The Institution of Engineering and Technology (IET) on 7th October 2017.
  2. Mannar Thirumalai Endowment Award (Cash Award of Rs. 4000) for the University First Rank in Master of Industrial Engineering studies from Madurai Kamaraj University, Madurai, Tamil Nadu, India.
  3. Bronze Medal and Cash Award of Rs. 2000 for the Third Rank (All India Level) in the Diploma in Rail Transport and Management Studies from the Ministry of Railway Education, NewDelhi, India.
  4. Employee of the Month Award in recognition of my contribution in academics in the Department, at Ibri College of Technology, on 2nd February 2015.
  5. Best Teacher Award in recognition of outstanding efforts and values added to the college achievement in the field of teaching-learning at Ibri College of Technology, on 24th February 2013.
  6. Cash Award of 400 Ethiopian Birrs (≈ Rs. 2500) for the Best Paper of the Year by the Ethiopian Society of Mechanical Engineers (ESME), Addis Ababa, ETHIOPIA, 2002.
  7. Best Paper Award for the paper “Reconfigurable Manufacturing Cell Formation Using Simulated Annealing” presented at the National Conference on Advanced Technologies in Electrical and Mechanical Engineering (NCATEME 2013) organized by Al Musanna College of Technology, Oman, on 16th April 2013.
  8. Best Paper Award for the paper “Investigation on Effect of Addition of Mg, SiC and Flyash in Aluminium Alloy for Automotive Alloy Wheel Rims” presented at the International Conference on Design, Analysis, Manufacturing and Simulation (ICDAMS2018), organized by Saveetha University, India, on 6-7 April 2018.
  9. Certificate of Recognition for the distinguished contribution as an Auditor in the College Internal Quality Audit at Ibri College of Technology, Oman, on 5th June 2015.
  10. Certificate of Appreciation in recognition of my contribution as Member of Quality Assurance Follow-up Committee towards the Quality Assurance & Accreditation process at Ibri College of Technology, Oman, on 16th June 2013.
  11. Jawaharlal Nehru Technological University (JNTU – Anantapur), Himachal Pradesh Technical University (Hamirpur), Mahamaya Technical University (Noida), Gautam Buddh Technical University (Lucknow), Saveetha University (Chennai) and K. S. Rangasamy College of Technology (Autonomous Institute from Tiruchengode) have prescribed my book titled “Engineering Mechanics” as a text/reference book in their Curriculum.

International/National Conferences Organized

  1. Organized a Two-Day International Conference on Design, Analysis, Manufacturing and Simulation, ICDAMS 2018, as a Convener at Department of Mechanical Engineering, Saveetha School of Engineering, Saveetha University, Chennai, India, 6-7 April 2018.
  2. Organized a Two-Day International Conference on Design, Analysis, Manufacturing and Simulation, ICDAMS 2016, as a Convener at Department of Mechanical Engineering, Saveetha School of Engineering, Saveetha University, Chennai, India, 7-8 April 2016.
  3. Organized a Three-Day International Conference on Emerging Research and Advances in Mechanical Engineering, ERA 2009, as an Organizing Secretary at Velammal Engineering College, Department of Mechanical Engineering, Chennai, India, 19-21 March 2009.
  4. Organized a One Day National Conference on Emerging Trends in Industrial Automation, ETIA 2008, as a Coordinator at Velammal Engineering College, Department of Mechanical Engineering, Chennai, India, 1st February 2008.

Workshops Organized

  1. Organized a One Day Pre-Conference Workshop on NDT Techniques for Evaluation of Casting & Welding Structures, as a Convener at Department of Mechanical Engineering, Saveetha School of Engineering, Saveetha University, Chennai, India, 5th April 2018.
  2. Organized a One Day National Level Hands-on Workshop on NDT Methods & Techniques, as a Coordinator at Department of Mechanical Engineering, Saveetha School of Engineering, Saveetha University, Chennai, India, 21st February 2018.
  3. Organized a One Day National Level Hands-on Workshop on Industrial Automation and Mechatronics for Beginners, as a Coordinator at Department of Mechanical Engineering, Saveetha School of Engineering, Saveetha University, Chennai, India, 1st February 2018.
  4. Organized a Two-Day Workshop on Hands-on Training in Non-Destructive Testing Methods & Techniques, as a Coordinator at Department of Mechanical Engineering, Saveetha School of Engineering, Saveetha University, Chennai, India, 24–25 February 2017.

Sponsor/Grants Received

  • As a Convener, received the Conference Grant of Rs. 50000 from the Science and Engineering Research Board (SERB), Department of Science and Technology (DST), Government of India, for organizing Two Day International Conference on Design, Analysis, Manufacturing and Simulation, ICDAMS 2016.
  • As a Convener, received the Conference Grant of Rs. 40000 from the Institution of Engineering and Technology (IET), UK., for organizing International Conference on Design, Analysis, Manufacturing and Simulation, ICDAMS 2016.
  • As a Convener, received the Conference Grant of Rs. 13000 from the Institution of Engineering and Technology (IET), UK., for organizing Pre-Conference Workshop on NDT Techniques for Evaluation of Casting & Welding Structures, 5th April 2018.

Teaching/Research Interests

Major Courses Taught

  • Engineering Drawing
  • Engineering Mechanics
  • Kinematics of Machinery
  • Dynamics of Machinery
  • Design of Transmission Systems
  • Operations Research
  • Total Quality Management
  • Process Planning and Cost Estimation
  • Production Planning and Control
  • Production & Operations Management

Areas of Research Interests

  • Cellular Manufacturing Systems
  • Friction Stir Welding of Similar and Dissimilar Alloys
  • WEDM Machining of Composite Materials
  • Characterization of Natural and Metal Matrix Composite Materials
  • Multi-objective Optimizations
  • Supply Chain Management
  • Total Quality Management 

Membership Of Professional Bodies

  1. The Institution of Engineers (India), Life Member M-143882-9, Kolkata, 2011.
  2. Indian Society of Technical Education, Life Member LM 43606, New Delhi, India, 2007.
  3. Operational Research Society of India, Life Member 0820/J/09/ML, Kolkata, India, 2009.
  4. Indian Society of Ergonomics, Life Member L141, Kolkata, India, 2007.
  5. Indian Institution of Production Engineers, Life Senior Member S/LM/3569, Bangalore, India, 2009.

Resource Person in FDPs/SDPs

  • Served as Resource Person and Delivered Guest Lectures/Invited Talks in more than 40 Faculty & Student Development Programs / Seminars / Workshops / Conferences.

Publications

Publication Type: Conference Proceedings

Year of Publication Title

2021

Ansari A. H., Jayakumar V., and Madhu S., “Wear and Friction Behaviours of Stainless Steel (SS 316) Wire Mesh and Carbon Fibre Reinforced Polymer Composite”, Trends in Manufacturing and Engineering Management, Lecture Notes in Mechanical Engineering. Springer Singapore, Singapore, pp. pp. 361–369, 2021.[Abstract]


There is a growing demand for the development of new polymer matrix composite materials that exhibits high strength, high wear resistance, good rigidity and less weight. In this work, an attempt has been made to develop a novel carbon fibre reinforcement polymer (CFRP) composite with stainless steel (SS 316) wire mesh and to investigate its tribological characteristics with the objective of improving the wear resistance. The pin-on-disc experiment was performed on the fabricated CFRP-SS316 fibre metal laminate by using EN31 steel (high carbon alloy) pins. Wear rate and coefficient of friction have been examined by conducting four experiments on CFRP-SS316 laminate. The process parameters used for this investigation includes applied load, sliding velocity, sliding distance and speed. Experimental results showed that the wear rate increases on a CFRP-SS316 disc laminate when the load increases gradually from 10 N to 40 N. The minimum wear rate of 16.34 mm3/N was obtained for 10 N applied load.

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2020

Prathap P., Madhu S., Jayakumar V., and Tamil Selvam N., “Environmental impact reduction in a pump sub assembly using alternate material”, International Conference on Materials Engineering and Characterization, Materials Today: Proceedings, vol. 22. pp. 806 - 810, 2020.[Abstract]


This work addresses the results developed by the systematic method with environmental consciousness in the selection of alternative materials used in the components, meeting the performance, functional requirements and reducing the environmental impact associated with the product life cycle. The investigation was carried out in monoblock pump impeller subassembly component. The environmental impact of CO2, SO2, PO4, ADF, and DCB has been evaluated using Centrum VoorMilieukunde Leiden (CML) methodology during the product’s life cycle from raw material acquisition through production, end-of-life treatment recycling and final disposal (i.e. cradle – to grave). The reduction in pollutant emission and environmental impact categories was observed to be reduced by 40% of CO2, 37% of SO2, 39% of PO4 and 5% of DCB respectively. The numerical simulation test report proved that change of material will increases the life-span and efficiency of the pump, since significant reduction in deformation and stress intensity is obtained when compare with the existing material.

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2020

Mohammed Ajmal Sheriff, Jayakumar V., Tauseef Ahmed M. D., and Sasi Kumar, “A comparative study on design of static and dynamic cellular manufacturing system under deterministic production environment”, Materials Today: Proceedings, vol. 24 (2). pp. 1468 - 1477, 2020.[Abstract]


In job shops and flow line manufacturing plants, the impact of Cellular Manufacturing System (CMS) with recent advancement in Group Technology (GT) and Automated Manufacturing System (AMS) has resulted in minimizing cost involved in machine maintenance and overhead, machine procurement, machine setup and intra/intercell material movement cost. Meanwhile, the industrialist addressed the problem in deciding the planning horizon to design CMS with respect to the change in customer demand pattern. The Classical CMS failed to capture the fickle in part demand and product mix. In the case of Dynamic CMS (DCMS), the fluctuation is considered by dividing the entire planning horizon into smaller periods. In this paper, a real time data of product mix and product demand were collected from an automobile components manufacturing industry located in SIPCOT Industrial Park, Sriperumbudur to visualize the potential benefits of incorporating DCMS. In this work, existing mathematical model has been used for designing DCMS and it is developed further to convert the model as static environment. Evaluation of the obtained CMS design was done by capturing the exact production parameters of the industry and it is found DCMS resulted in promising cell configuration with minimal overall objective value.

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2020

Krishna Priya S., Jayakumar V., and Suresh Kumar S., “Defect analysis and lean six sigma implementation experience in an automotive assembly line”, International Conference on Materials Engineering and Characterization, Materials Today: Proceedings, vol. 22. pp. 948 - 958, 2020.[Abstract]


This paper presents a case study on implementation of lean six sigma in an automotive assembly plant in order to reduce/eliminate non-value added processes in the assembly line. A thorough defect analysis is carried out in the automotive assembly plant to examine, measure and reduce sources of flaws in an operational process in question, to optimize the defect occurrence, improve and sustain performance throughout the automotive assembly process. In the automotive assembly division considered for study, three non-value added activities and 12 crucial defects were identified and the potential solutions were provided using lean six sigma strategies like DMAIC (Define–Measure-Analyze-Improve-Control) & RCA (Root Cause Analysis) tools and techniques. The implementation of proposed solutions have resulted in drastic reduction of non-value added processes and defect ratio in the assembly line.

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2020

Kumar R., Madhu S., Aravindh K., Jayakumar V., Bharathiraja G., and Muniappan A., “Casting design and simulation of gating system in rotary adaptor using procast software for defect minimization”, International Conference on Materials Engineering and Characterization, Materials Today: Proceedings, vol. 22. pp. 799 - 805, 2020.[Abstract]


This work gives an idea of creating gating system for investment casting with the help of fascinating advancements in the casting field. In this study, advanced techniques are utilized for creating a part named rotary adapter. This part has a complex shaped profile and needs a high surface finish with stringent dimensional tolerance. Hence investment casting has been chosen for fabricating. Unigraphics software was used for modelling the part and the gate system as per the given dimensions. Then the part is imported to the Pro-CAST software for simulation. In this work different real time parameters were given as input and the simulation was carried out. The simulation results were analysed and the defects were identified. Different gating system has been implemented for eliminating the defects. The process was repeated in the software and the efficiency was proved with defect free casting.

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2020

Stephen Leon J., Bharathiraja G., and Jayakumar V., “A Review on Friction Stir Welding in Aluminium Alloys”, IOP Conference Series: Materials Science and Engineering, vol. 954 (1). 2020.[Abstract]


Joining of aluminium alloys is always a challenging task due to its easily oxidising property in its molten stage. Although its application is huge in the building of aerospace structure, 2XXX and 7XXX series alloys are categorised as non-weldable aluminium alloys. Recent development in the application of friction stir welding process in the joining of these non-weldable alloys simplified the fabrication processes. In this review article, significance of friction stir welding comparing with other solid state metal joining process is addressed. Recent developments and application of this relatively new metal joining process in various industries are also discussed. Particular emphasis has been given to the mechanism responsible for the formation of this solid state joining technique. Apart from this, major process parameters that influence the formation of weld and weld defects caused by the improper selection of process parameters are also explained in detail.

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2020

Saiteja J., Jayakumar V., and Bharathiraja G., “Evaluation of mechanical properties of jute fiber/carbon nano tube filler reinforced hybrid polymer composite”, Materials Today: Proceedings, vol. 22. p. pp.756, 2020.[Abstract]


Abstract In present generation the use of natural fibres are increased highly in automobile sector as a potential renewable and eco-friendly materials. The natural fiber reinforced polymer composites are being presently used in various automobile industries as paneling elements in cars and in many internal parts. It can replace glass fiber reinforced plastics in many applications. This work focuses on dispersion of multi walled carbon nano tube in jute fiber and epoxy material. Five different proportions of multi walled carbon nano tube filler was taken (2%, 4%, 6%, 8%, 10%) to fabricate composite. The specimens were cut as per ASTM standard and the mechanical properties were evaluated as per ASTM testing methods. The results exhibited 3% volume nanotube composite has improved mechanical properties.

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2020

Ramesh Babu K., Jayakumar V., and Bharathiraja G., “Experimental investigation of fish scale reinforced polymer composite”, Materials Today: Proceedings, vol. 22. p. pp.416, 2020.[Abstract]


Nowadays various biowaste materials are used as filler material in polymer composites. In this paper, the fish scale which is obtained from the outermost part of fish skin is utilized as filler material. Seven different volume fraction of fish scale were taken with epoxy matrix material to prepare composite plate. The composite specimens were fabricated by hand lay up method. The mechanical properties such as tensile, flexural and impact tests were evaluated as per ASTM standards. The addition of fish scale filler to reinforce the epoxy composite has considerably increased the mechanical properties of the composites. This investigation suggested the possibility of introducing fish scale obtained from the skin of the fish in polymer matrix composites.

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2020

Vinay Reddy A., Bharathiraja G., and Jayakumar V., “Experimental investigation on sugarcane powder filled glass fiber epoxy composite”, Materials Today: Proceedings, vol. 22. p. pp.762, 2020.[Abstract]


Nowadays the natural filler usage is increasing in polymer composites due to environmental concern. The natural fillers are abundantly available in India. Sugarcane is the major crop cultivated in India. Bagasse is the fibrous pulpy residue obtained after sugarcane crushed in mill. It is used for biofuel production and other applications. In this work, sugarcane powder obtained from bagasse was reinforced with randomly oriented short glass fiber in epoxy material. The epoxy composites were fabricated by hand lay-up method. The composites were prepared with 10%, 15%, 20%, 25%, 30% volume fraction sugarcane powder with 20% glass fiber. The mechanical properties such as tensile, flexural and impact strength were investigated as per ASTM standard. Test results show that the 20% glass with 25% sugarcane powder composite exhibited improved mechanical properties.

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2020

Haja Syeddu Masooth P. and Jayakumar V., “Experimental investigation on surface finish of drilled hole by TiAlN, TiN, AlCrN coated HSS drill under dry conditions”, International Conference on Materials Engineering and Characterization, Materials Today: Proceedings, vol. 22. pp. 315 - 321, 2020.[Abstract]


In this present study, the effect of three different coatings namely TiN, AlCrN, TiAlN under dry drilling conditions are examined to investigate the coated drills effect on the surface finish of the hole produced in AA5052. The surface roughness and cylindricity tests are conducted to measure the surface finish and hole profile respectively. The results obtained by the Field Emission Scanning Electron Microscopy (FESEM) and Energy dispersive spectroscopy (EDS) analysis indicate the elemental chemical composition of the tools used. Consequently, TiAlN coated drill had the significant effect on the surface substrate with less tool wear and excellent surface finish properties.

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2020

Haja Syeddu Masooth P., Jayakumar V., and Bharathiraja G., “Experimental investigation on surface roughness in CNC end milling process by uncoated and TiAlN coated carbide end mill under dry conditions”, International Conference on Materials Engineering and Characterization, Materials Today: Proceedings, vol. 22. pp. 726 - 736, 2020.[Abstract]


In this study, the effect of machining parameters on surface roughness is investigated during CNC end milling process of Al6061 – T6 Alloy by Taguchi’s method. The work material was machined with uncoated carbide tool and TiAlN coated carbide tool and comparative analysis have made between coated and uncoated tool for identifying the better surface finish. ANOVA analyses were carried out to identify the significant factors affecting surface roughness, and the optimal cutting combination was determined by seeking the best surface roughness and signal-to-noise ratio. Finally, confirmation tests verified that the Taguchi design was successful in optimizing milling parameters for surface roughness.

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2020

Bharathiraja G., Karunagaran N., Jayakumar V., and S., G., “Investigation on fracture toughness of algae filler vinyl ester composite”, Materials Today: Proceedings, vol. 22. pp. 1233-1235, 2020.[Abstract]


The natural filler particulate composite usage is seen in various applications in recent years due its eco-friendly nature. Synthetic fibers such as glass, carbon etc., have been widely used in fiber reinforced composites due to its high specific strength. But non-biodegradable nature of polymers and high cost of production leads to search of new kind of materials. The natural particulates obtained from various sources are used to prepare composite materials. Rice husk, ground nut shell particulate, cashew nut shell are some of the natural fillers obtained from agriculture residue. Algae filler is one of the abundantly available natural filler from oceans and inorganic sources, having a large diverse group of photosynthetic organisms. In this work, composite plates were prepared with vinyl ester resin with different volume fraction of algae filler (5%, 10%, 15%, 20%, 25%). According to ASTM standard, five test specimens were cut and Mode I fracture toughness test was carried out. Test results exhibited significant improvement in fracture toughness value for the increase in volume fraction of algae filler in vinyl ester material.

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2020

Jaya Krishna K., Jayakumar V., and Bharathiraja G., “Mechanical analysis of medical waste reinforced polymer composite”, Materials Today: Proceedings, vol. 22. pp. 473-476, 2020.[Abstract]


Medical waste poses many health problems when burnt in landfills and several precautions are required while decomposing. Medical waste is classified as risky waste and non risky waste. Around 75% of medical waste generated is considered as non risky waste. In this work, non-risky medical waste obtained from crushing used tablet covers has been taken as reinforcement material. It was mixed up with epoxy resin for fabricating a new kind of composite material for enhancing mechanical properties. Six different composites with 2%, 4%, 6%, 8%, 10%, 12% volume fractions of medical wastes were fabricated using the hand lay-up process. Then the composite test samples were evaluated for mechanical properties, namely tensile, flexural and impact strength. The effect of medical waste filler volume fraction on the mechanical properties was investigated. The test results obtained confirmed yield of good mechanical properties for 10% volume fraction composite.

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2019

Chandan Reddy K. R., Bharathiraja G., and Jayakumar V., “Mode I fracture toughness analysis of rubber particulate epoxy composite”, Materials Today: Proceedings, vol. 22. p. 759, 2019.[Abstract]


Tyres cannot be used in automobiles after completing their functional life. Every year one billion tyres are withdrawn from use in automobiles. In this study, rubber particulates obtained from waste tyres are used as reinforcement material in this composite. A new class of polymer composite is prepared using rubber particulate and epoxy resin as matrix material. Composite plates are manufactured by hand layup process. The five different volume fraction of rubber particulates are taken with epoxy resin material to fabricate composite plate. Then composite specimens are cut according to ASTM standard and Mode I fracture toughness test is carried out for the five test specimens. Test results show significant improvement in fracture toughness value for the increase in volume fraction of rubber particulate in epoxy material.

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2019

Suthan R., Jayakumar V., and Bharathiraja G., “Wear analysis of bio-fillers reinforced epoxy composites”, Materials Today: Proceedings, vol. 22. p. 793, 2019.[Abstract]


This paper presents the wear and morphological analysis of treated and untreated bio-fillers reinforced polymer composites. Four different bio-fillers viz. rice husk, groundnut shell powder, coconut shell powder and hybrid filler were used for the preparation of composites. Composites were prepared using treated and untreated bio-fillers in epoxy resin by hand lay-up method to study the wear properties of the composite. 20% volume fraction of bio-fillers was taken in epoxy resin. Bio-fillers are treated by malic acid. The test specimens were cut as per ASTM standard. Then tests were conducted on pin-on-disc apparatus to evaluate wear characteristics of treated and untreated bio-filler reinforced epoxy composites. Load, sliding velocity, sliding distance are taken as test parameters. After wear test, the surface morphology of test specimens were examined by scanning electron microscopy. Test results exhibited significant improvement in wear resistance of treated hybrid bio-filler composite.

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2019

K. S. D., Jayakumar V., and Madhu S., “Evaluation of Mechanical Characterization of CFRP Reinforced Stainless Steel (SS304) Wire Mesh Polymer Composite”, Conference Series: Materials Science and Engineering, vol. 574. 2019.[Abstract]


In recent days, fibre metal hybrid composites have been utilized for improve the stiffness, excellent corrosion resistance, low density and less weight. CFRP reinforced stainless steel (SS) wire mesh hybrid fibre metal laminate has been fabricated using hand layup process. Viscoelastic properties of fabricated composite samples have been studied by using Dynamic Mechanical Analysis (DMA) test. Mechanical characterization such as Dynamic Mechanical Analysis (DMA), Flexural test and tensile properties of the newly fabricated fibre metal laminated also investigated. The DMA parameters such as storage modulus (E'), loss modulus (E") and damping factor (tan δ) has been investigated. Flexural test has been performed for evaluating the bending stress. DMA results revealed that storage modulus of E' was maximum at 5 Hz. In this work tensile strength observed was 533.05 MPa at 16.19 KN. For Flexural strength obtained in the fabricated composite material was 1.03 KN.

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2019

Suthan R., Jayakumar V., and Madhu S., “Investigation on Mode I Interlaminar Fracture Toughness of Chemically Treated / Untreated Saw Dust Powder Based Jute Fabric Reinforced Epoxy Composite Structure”, IOP Conference Series: Materials Science and Engineering, vol. 574, no. 1. IOP Publishing, 2019.[Abstract]


Nowadays polymer matrix composites are widely used in the areas of automotive, medical, aircraft and aerospace industries. Since, chemically surface modified saw dust with jute fiber reinforced composites play vital role in developing lightweight structural materials in many engineering industries. This study focuses on utilizingchemically surface modified saw dust with jute fiberas reinforcement filler loading malic acid treated and un treated (10 %,20% and 30%) and fiber loading (3-layer jute fiber) in epoxy resin. This composite was fabricated using hand lay-up process. The influence of filler volume fraction and fiber weight fraction on the fracture toughness properties of treated / untreated modified saw dust with jute fiber/filler was studied initially. Test results revealed that the composite 20-volume fraction malic acid treated saw dust with 3-layer jute fiber composite has better fracture properties as compared with other specimens.

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2019

Muniappan A., Jayakumar V., Ajithkumar R., Veerabhadra S. K., and Prasanna R., “Optimization of WEDM Process Parameters for Cutting Speed using Taguchi technique”, Materials Today: Proceedings, vol. 18. pp. 332 - 341, 2019.[Abstract]


In this present experimental study, the effect and advancement of machining parameters on cutting speed in wire electrical discharge machining (WEDM) operations were studied. The hybrid metal matrix composite (MMC) was manufactured by process named as stir casting utilizing particulates of Silicon carbide and graphite each in Al6061 combination. The analyses were outlined with Taguchi L27 design matrix. WEDM parameters resemble pulse (PU) on time, current, PU off time, gapset voltage, wire tension and wire feed are considered. The impact of parameters on the cutting speed (CS) is dictated by utilizing examination of fluctuation. The optimized parameters are PU on time (Level 3), PU off time (Level 1), peak current (Level 2), gap set voltage (Level 1), wire feed (Level 3) and wire tension (Level 2) are the best combination to achieve best cutting speed. PU off time, set voltage, PU on time and discharge current have considerable effect and most influenced control parameters on CS

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2019

Labesh Kumar C., Jayakumar V., and Bharathiraja G., “Optimization of welding parameters for friction stir spot welding of AA6062 with similar and dissimilar thicknesses”, 1st International Conference on Manufacturing, Material Science and Engineering: Materials Today: Proceedings, vol. 19. pp. 251 - 255, 2019.[Abstract]


Friction Stir Spot Welding (FSSW) is a joining process, in which a barreled shape tool with shoulder pin profiled is inserted in tool holder and is made to rotate between multiple work pieces of material in the joint line. Friction heat is produced in the midway of pin and work that are lapped together with the help of backing bar. The heat makes the workpiece to relent, causing the tool not to melt and allow the joint to be performed strong. An effort is made to design a tool which will be used for joining of Al. Parameters are optimized for the joining of similar metals with different thicknesses. The metals used here is Aluminium 6062.

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2018

Muniappan A., Solomon R., Jayakumar V., Madhu S., and Shaqib G., “An estimating the effect of control process variables on kerf width in wire EDM of AZ91 magnesium alloy by Taguchi method”, IOP: Conference Series: Materials Science and Engineering, vol. 402. pp. 1-9, 2018.[Abstract]


The target of the current research study is to contemplate the impacts of diversecontrol parameters in WEDM, for example, wire tension, wire speed, discharge duration on and Pulse off time over kerf width (KW) and to get the ideal arrangements of process parameters. The trial work comprises of machining of Magnesium AZ91 alloy material utilizing Wire EDM (WEDM).The wire (tool) material was brass wire by means of zinc coated. The observations of the cutting process are based on L27 Taguchi's array for optimizing the control variables for these composite. The criticalness of each cutting parameters are associated to the most impacting factors which influences the procedure reactions. The ideal cutting variables are selected from the outcomes. Minitab V.18 software are developed for establishing good relationship between machining variables, such as wire feed, pulse duration time, wire tension & pulse off duration with the cutting control process criteria kerf width.

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2018

Muniappan A., G., M. D. Shaqib, Jayakumar V., Bharathiraja G., and R., S., “Experimental investigation of WEDM process parameters for cutting speed using response surface methodology”, IOP Conference Series: Materials Science and Engineering, vol. 402. IOP Publishing, pp. 1-9, 2018.[Abstract]


In this present experimental study, the effect and advancement of machining parameters on cutting speed (CS) in wire electrical discharge machining (WEDM) operations were studied. The hybrid metal matrix composite (MMC) was manufactured by process named as stir casting utilizing particulates of Silicon carbide and graphite each in Al6061 combination. The analyses were outlined with response surface methodology. WEDM parameters resemble Pulse on time, current, Pulse off time and control speed are considered. The optimized parameters are Pulse on time (Level 3), Pulse off time (Level 1), peak current (Level 2) and control speed (Level 2) are the best combination to achieve best material removal rate. Pulse off time, control speed, Pulse on time and discharge current have considerable effect and most influenced control parameters on CS.

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2018

Muniappan A., Prasanna R., Shaafi T., Jayakumar V., and Ajithkumar M., “Investigation of wire EDM control variables on kerf width for Al6063/SiC/Al 2 O 3 composite by response surface methodology”, IOP: Conference Series: Materials Science and Engineering, vol. 402. p. 012152, 2018.[Abstract]


This investigation presents the consequence of Wire EDM process variables over the kerf width (KW) of Al6063/SiC/Al2O3 hybrid composite which is fabricated by stir cast method. 31 experiments were conducted on the basis of response surface methodology central composite design. Kerf width is picked as the quality objective. The important coefficients are gotten by achieving successfully an Analysis of Variance (ANOVA) at the 5 % assurance interval. The outcomes discover that KW is much more impacted by Pulse on time, Pulse off time, current and control speed and little of their interactions action or influence. To predict the average kerf width, a mathematical regression model was developed. The forecasted value of optimum kerf width is 0.265 mm for Pulse on time (100), Pulse off time (48), current (200) along with control speed (60%).The Pulse on time is most influential variable for the kerf width. The results have been analyzed using Minitab version 18 software.

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2018

Variavel M., Pugazhenthi R., and Jayakumar V., “Experimentation and simulation process of friction stir welding for lightweight similar and dissimilar materials”, MATEC Web of Conferences, EDP Sciences, vol. 172. p. 04002, 2018.[Abstract]


The emerging trends in advanced robust manufacturing trend need light and medium weight materials with higher strength for different purposes. The aluminum and copper alloys are the major construction material for different causes in aerospace, railway and shipbuilding industries. Joining of dissimilar material during built-up structures is one of the tough tasks of the manufacturer; joining of similar and dissimilar material can be effectively made in the Friction Stir Welding (FSW). In this research article made an attempt to find an optimal process parameter for lap joining process in FSW for Al 5052, Al 6061 joining with copper. The finite element simulation model of the lap joint designed, analyzed and simulated with consideration of various spindle speed of CNC machine, an optimal speed condition found and which is applied in during the manufacturing. The fabricated workpieces were tested and the results were compared with the simulated model result, it shows that the fabricated dissimilar materials workpieces are superior to the simulated results especially in tensile load conditions.

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2018

Muniappan A., Senthilkumar R., Jayakumar V., Venkata Ravikumar S., and Sai Tarunkumar P., “Modeling and experimental investigation of process parameters in WEDM for surface roughness using regression model”, MATEC Web of Conferences, EDP Sciences, vol. 172. pp. 1-7, 2018.[Abstract]


The present study focused on the multiple regression modeling and predicting the surface roughness of the Aluminum hybrid composite during the WEDM process. The hybrid MMC was manufactured by process named as stir casting utilizing particulates of Silicon carbide and graphite each in Al6061 combination. The analyses were outlined with Taguchi L27 design matrix. Mathematical relationships between the surface roughness and WEDM cutting parameters (Pulse on time, Pulse off time, current, gap voltage, wire speed and wire tension) have been investigated. The results show that the multiple regression analysis is a successful method for developing a mathematical model to predict the surface roughness. The optimum value of process parameters for the predicted optimum value of surface roughness (1.285) is pulse on time 106 units (Level 1), pulse off time 60 units (Level 3), peak current 90 units (Level 2), gap set voltage 50 units (Level 3), wire speed3 units (Level 1) and wire tension 12 units (Level 3).The optimum results are adopted in validation study and the results based on WEDM process responses can be effectively improved.

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2018

Muniappan A., Jaivaakheish A. P., Jayakumar V., Arunagiri A., and Senthilkumar R., “Multi objective optimization of process parameters in WEDM of aluminum hybrid composite using taguchi and topsis techniques”, IOP Conference Series: Materials Science and Engineering, vol. 402. IOP Publishing, pp. 1-10, 2018.[Abstract]


Multi-Criteria Decision Making (MCDM) strategies have gotten much consideration from scientists and professionals in assessing, evaluating and positioning choices transverse over assorted technologies. Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) continues on working attractively crosswise over various application territories. This paper proposes the TOPSIS-based Taguchi enhancement way to deal with decide the ideal WEDM process parameter for machining of aluminum hybrid composite using brass wire. The hybrid metal matrix composite was manufactured by stir casting process utilizing particulates SiC and graphite each in Al6061 combination. This experiment was outlined with L27 orthogonal cluster. The test input parameters are Pulse on time, Pulse off time, current, gap voltage, wire speed & wire tension. The impact of the machining parameters on the kerf width (KW) and surface roughness (SR) is expressed by utilizing examination of variation. The parameters corresponding to experiment run number 9 are Pulse on time 108 units (Level 1), Pulse off time 60 units (Level 3), peak current 230 units (Level 3), gap set voltage 60 units (Level 3), wire feed 5 units (Level 3) and wire tension 12 units (Level 3) are the best combination to achieve better surface roughness & kerf width.

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2018

Muniappan A., Arokiya Raj, Jayakumar V., Shanmuga Prakash R., and Sathyaraj R., “Optimization of WEDM process parameters using standard deviation and MOORA method”, IOP: Conference Series: Materials Science and Engineering, vol. 402. pp. 1-12, 2018.[Abstract]


In this present experimental work, the effect and advancement of machining control parameters over kerf and surface quality in wire cut electrical discharge machining operations were analyzed. The hybrid metal reinforced composite was manufactured by process named as stir casting utilizing particulates of graphite & Silicon carbide each in Al6061 combination. The analyses were outlined with Taguchi L27 design matrix. WEDM parameters resemble pulse Pulse on time, current, Pulse off time, gap set voltage, wire tension &feed are considered. The impact of the machining parameters on the kerf width (KW) and surface roughness (SR) is dictated by utilizing examination of fluctuation. MOORA in blend with standard deviation (SDV) was utilized for the enhancement procedure. SDV was utilized to decide the weights that were utilized for normalizing the reactions acquired from the mechanical test outcomes. The parameters corresponding to experiment run number 7 are Pulse on time 108 units (Level 1), Pulse off time 50 units (Level 2), peak current 230 units (Level 3), gap set voltage 50 units (Level 3), wire feed 5 units (Level 3) and wire tension 12 units (Level 3) are the best combination to achieve better surface roughness & kerf width.

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2018

Muniappan A., Ajithkumar M., Jayakumar V., Thiagarajan C., and Sreenivasulu M., “Utility approach for multi target streamlining of process parameters in wire EDM”, MATEC Web of Conferences, EDP Sciences, vol. 172. 2018.[Abstract]


This paper depicts the improvement of multireaction enhancement system utilizing utility technique to foresee and select the ideal setting of machining parameters in wire electro-release machining (WEDM) process. Investigations were arranged utilizing Taguchi's L27 orthogonal exhibit. A wide range of Wire EDM control variables such as pulse on time duration, pulse off time duration, servo voltage along with wire feed rate were judged for investigation. Multi reaction enhancement was performed for both cutting pace (CS) and surface unpleasantness (SR) utilizing utility idea to discover the ideal procedure parameter setting. The level of essentialness of the machining parameters for their impact on the CS and SR were controlled by utilizing investigation of fluctuation (ANOVA). In present study utility approach method used to optimize the process parameter in wire EDM of magnesium Al6061/SiC/Graphite hybrid composite with zinc covered brass wire electrode. The approach depicted here is relied upon to be profoundly useful to assembling enterprises, and furthermore different territories, for example, aviation, car and apparatus making businesses. The parameters corresponding to experiment run number 7 are pulse on time 108 units (Level 1), pulse off time 60 units (Level 3), peak current 230 units (Level 3), gap set voltage 60 units (Level 3), wire feed 3 units (Level 1) and wire tension 4 units (Level 1) are the best combination to achieve better surface roughness and cutting speed.

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Publication Type: Journal Article

Year of Publication Title

2021

R. Suthan, Jayakumar V., and R. Gokuldass, “Role of Silicon Coupling Grafted Natural Fillers on Visco-Elastic, Tensile-Fatigue and Water Absorption Behavior of Epoxy Resin Composite”, Silicon, vol. 13, pp. 1199–1207, 2021.[Abstract]


This work investigates the influence of silicon based coupling agents on visco-elastic properties of natural filler dispersed epoxy resin composites. Also this work attempts to explore the possibility of using silicon coupling grafted natural fillers as potential fillers for polymer composites. Ground nut shell power (GS powder), rice husk and saw dust were selected as reinforcement for this current investigation. The powders were silane surface grafted using silicon coupling agent 3-Aminopropyltrimethoxysilane via aqueous solution method. The composites were prepared via gravity casting method and post cured at 120°C. The visco-elastic behavior of silane surface modified rice-husk-epoxy natural filler composite gives improved results in storage modulus, and loss tangent. Similarly, the fatigue results revealed that the composites made with 10 vol.% of silane surface treated rice husk filler gives maximum fatigue life cycle of 1310. The sessile drop results show that the silane surface modified epoxy composites retains higher absorption resistance by offering higher contact angle even after the natural fillers are filled. Scanning electron microscope images revealed highly reacted phase and improved dispersion of natural fillers with matrix. These natural fillers strengthen epoxy composites could be right choice to replace many metallic based materials in engineering applications.

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2021

Stephen Leon J., Bharathiraja G., and Jayakumar V., “Experimental Investigations on Mechanical Properties of Friction Stir Welded AA2024-T3 Joints”, FME Transactions, vol. 49, pp. 511 - 517, 2021.[Abstract]


Friction stir welding is a promising solid state metal joining technique. It can be used to join AA2024-T3 metal plates which cannot be welded using normal fusion welding. Post weld joint efficiency depends completely on the proper selection of process variables as the required heat input for this process is not supplied by an external source but an internal function of the variables. Apart from the process variables tool pin shape also plays a vital role on the delivery of better weld strength. A comparative experimental analysis was done to understand the improvement in the post weld properties on the usage of non-cylindrical tool pin. In order to optimise major process variable for cylindrical as well as non-cylindrical tool pin geometries thermal study had been carried out and optimum heat input conditions were analysed for AA2024-T3 plates. Comparative analyses on friction stir weld joints were made qualitatively and quantitatively to understand the improvement on the introduction of non-cylindrical flat faced pin in the tool.

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2020

Stephen Leon J. and Jayakumar V., “Transient heat input model for friction stir welding using non-circular tool pin”, FME Transactions, vol. 48, no. 1, pp. 137-142, 2020.[Abstract]


Frictional heat source in the contact surface of a rotating tool and a stationary workpiece is used to join metal pieces along the weldline in the friction stir welding process. Temperature profile developed during welding decides the post weld properties on the joined workpieces not only along the weld line but also in the nearby layers of heat affected zone. As the heat input depends on the contact surface geometry in the tool/matrix interface, tool shape has a higher influence on peak temperature developed during the process and on the other hand it influences the post weld properties also. In this paper, a simplified analytical heat input model has been derived and validated for noncircular pin profile by introducing a new multiplication factor in the circular pin profile heat input model. Transient thermal numerical models are developed for, triangular, square and pentagonal pin profiles using analytical heat input results to analyse the change in temperature profiles with respect to the change in tool pin geometry. Furthermore, a detailed analysis is made to understand the percentage contribution of tool pin on the total heat supply

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2020

Stephen Leon J. and Jayakumar V., “Effect of Tool Shoulder and Pin Cone Angles in Friction Stir Welding using Non-circular Tool Pin”, Journal of Applied and Computational Mechanics, vol. 6, no. 3, pp. 554 - 563, 2020.[Abstract]


In friction stir welding frictional heat is generated by the rotating tool, sliding over the stationary plate along the weld centre. Tool being the only source of heat producing member, its geometrical design influences the heat generation rate. In this present work, effects of variation in tool shoulder and tool pin taper angles on thermal history during joining are analysed. Tools with triangular and hexagonal tool pins are used to understand the influence of tool pin shape on process temperature. An analytical heat input model is developed for tools with non-circular tool pins and a comparative study is carried out between the hexagonal and triangular tool pins on temperature distribution using a three dimensional Matlab model. Proposed model is validated through experimental analysis. Apart from this, regression model based comparative study is carried out on the variation in temperature response to the change in tool pin shape, tool shoulder and tool pin taper angle.

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2020

Stephen Leon J., Bharathiraja G., and Jayakumar V., “Analytical and experimental investigations of optimum thermomechanical conditions to use tools with non-circular pin in friction stir welding”, International Journal of Advanced Manufacturing Technology, vol. 107, no. 11-12, pp. 4925 - 4937, 2020.[Abstract]


Friction stir welding tools with non-circular pins exhibit comparatively superior weld quality than circular pins. Improper selection of process parameters directs towards excess or insufficient heat supply which deteriorates weld quality and tool life. This necessitates exact prediction of heat generation with respect to the chosen pin geometry that is required to optimise process parameters. In this paper, a novel analytical model is developed to quantify the percentage reduction in heat generation on the replacement of circular tool pin with non-circular. Experiments were conducted using tools with different pin geometries to validate the proposed model. Based on the obtained results, optimum process variable selection charts were prepared with respect to the reduction in heat supply to facilitate amiable environment to use non-circular tool pins. Weld quality on the suggested range in the charts was examined through macro structure, hardness and tensile analysis.

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2020

Stephen Leon J., Bharathiraja G., and Jayakumar V., “Experimental Analysis on Friction Stir Welding using Flat-Faced Pins in AA2024-T3 Plate”, FME Transactions, vol. 49, no. 1, pp. 78-86, 2020.[Abstract]


In friction stir welding, lesser tool life restricts the usage of non-circular pin in friction stir welding tool eventhough it delivers comparatively better weld joints than circular pin. Process peak temperature during the process affects the shear strength of the flowing material around the tool pin. Maintaining the process peak temperature as low as possible improves the properties in heat affected zone but on the other hand it increases the stress on the tool pin.Especially on the usage of non-circular pin, the pin surface experiences uneven stress distribution and causes premature tool failure. In this paper, optimum thermal environment through proper selection of process parameters and dwell period with respect to the pin geometry are analysed. A comparative analysis is also made to understand the impact of increase in flat surfaces in the pin surface on weld quality in the view of developing a suitable thermal environment that can improve tool life without compromising joint strength. Apart from this, optimum dwell period for the chosen tool pin geometry is analysed based on the empirical softening temperature of the material.

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2019

Kandula Mahesh, Bharathiraja G., and Jayakumar V., “Wear Analysis of Rice Husk Shell Powder Reinforced Epoxy Composite”, International Journal of Mechanical and Production Engineering Research and Development (IJMPERD) , vol. 9, no. 5, pp. 997-1104, 2019.[Abstract]


Nowadays, with the awareness of the public along with strict legitimate forces over the use of polymers, the manufacturing and automotive industries started using the renewable materials. In this regard, rice husk powder reinforced composites play a vital role in developing lightweight structural materials. This study focuses on utilizing rice husk as reinforcement filler loading (10%, 20%, 30% treated and untreated) in epoxy resin. This composite was fabricated using hand lay-up process. The influence of filler volume fraction on the wear properties of rice husk filler was studied in this work. Test results revealed that the composite with 20% volume fraction treated rice husk reinforced epoxy composite has better wear properties.

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2019

Chintala Sai Virinchy, Jayakumar V., Abdul Hafeez Asif, and R. Pugazhenthi, “Experimental Investigation of Al-Mg-SiC-Fly Ash Composites for Automotive Alloy Wheel Rims”, International Journal of Vehicle Structures and Systems, vol. 11, no. 2, 2019.[Abstract]


The conservation of resources is the biggest concern for the past half century. The mankind is heading towards the betterment of living with a key intention to obtain pertaining results with less effort. One such field which has been an extensive outreach for research and innovation is the composite materials. This study focuses on design and development of a new composition of materials which has enhanced mechanical properties than the existing materials. This study is about combining four materials namely aluminium, magnesium, SiC and fly ash in various proportions and to test the obtained specimens. The test specimens are fabricated with aluminium as the metal matrix and other materials (Mg, SiC and fly ash) as reinforcements. Three different combinations are designed by keeping the fly ash, silicon carbide at constant percentage and varying the contents of aluminium and magnesium. The results of the tests are promising and the proposed composition can be a potential reliable replacement material for existing alloy wheels.

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2019

Stephen Leon J. and Jayakumar V., “An Investigation of Analytical Modelling of Friction Stir Welding”, International Journal of Mechanical and Production Engineering Research and Development, vol. 9, no. 1, p. 179, 2019.[Abstract]


Weld properties in Friction Stir Welding (FSW)depend on the peak temperature attained during the process and cooling rate. Temperature cycles in this joining process decides the microstructure not only in the weldment but also in the heat affected zones of the parental metal. The complex flow of plasticized metal makes it difficult to measure generated heat directly which results the metal mixing and flow in the stir zone in FSW process. This creates an importance on the analytical, numerical and computational modelling of friction stir welding. In this review on friction stir welding, special focus is given on various analytical models developed to estimate peak temperature during the process. The different approaches that have been used to investigate heat generation are presented and their drawbacks are discussed. Assumptions made in the modelling and their corresponding effects in the results are also addressed.

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2019

Bharathiraja G., Jayakumar V., and Mohith Reddy P., “Evaluation of Mechanical Properties of Treated Hybrid Particulate Reinforced Polyester Composites”, International Journal of Mechanical and Production Engineering Research and Development, vol. 9, no. 3, pp. 1077-1084, 2019.[Abstract]


In recent years, natural fibers along with mineral fillers are being used to fabricate hybrid composites to achieve enhanced mechanical properties. In this paper, the fabrication and mechanical characterization of novel hybrid particulate reinforced polyester composites are presented. Also, the effect of treated hybrid particulate reinforced composites is investigated. In this work, groundnut shell powder (GSP) and silicon carbide (SiC) hybrid particulates are used as constituents in different volume fractions to fabricate six different composite specimens (three each with untreated and treated GSP) and hand layup process is used for fabrication of these composite specimens. The alkaline malic acid was used for surface treatment. The effect of hybrid particulates, on tensile, flexural and impact properties of the polyester composites were investigated with and without surface treatments. It is observed that alkaline treated composite at 30% volume fraction of hybrid particles resulted in improved mechanical properties and such composites can be used in low load bearing applications.

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2018

M. Ravi Teja Reddy, Jayakumar V., Santhoshkumar D., and Muniappan A., “Vibration Testing of Novel Engine Mount: Technical Note”, International Journal of Vehicle Structures and Systems, vol. 10, no. 6, p. 417, 2018.[Abstract]


In order to isolate the vibrations in rotating machineries, engine mounts are used. In this paper, a novel engine mount that is specially designed using fluorocarbon material is experimentally assessed for an improved performance with an existing rubber based engine mount. The changes are made in the dimensions of the existing engine mount for better vibration absorption. Experimental results have shown a considerable benefit in vibration suppression by the engine mount using fluorocarbon more than the ones using rubber.

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2018

Muniappan A., Kommana Veerabhadrarao, Jayakumar V., Thiagarajan C., and Arunagiri A., “Parametric Optimization of WEDM Process Parameters on Al/SiC/Graphite Hybrid Composites Using TOPSIS Method”, International Journal of Mechanical and Production Engineering Research and Development, vol. 8, no. 8, pp. 138-143, 2018.[Abstract]


Multi-Criteria Decision Making (MCDM) strategies have gotten much consideration from scientists and professionals in assessing, evaluating and positioning choices over manufacturing industries. Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) continues on working attractively crosswise over various application territories. This paper proposes the TOPSIS-based Taguchi enhancement way to deal with deciding the ideal WEDM process parameter for machining of the aluminum hybrid composite using brass wire. The hybrid metal grid composite was manufactured by stir casting process utilizing particulates SiC and graphite each in Al6061 combination. This experiment was outlined with the L 27 orthogonal cluster. The test ponders were directed under shifting Pulse on time, Pulse off time, current, gap voltage, wire speed, and wire tension. The impact of the machining parameters on the kerf width (KW) and surface roughness (SR) is dictated by utilizing an examination of fluctuation. The parameters corresponding to experiment run number 4 are pulse on time 108 units (Level 1), pulse off time 60 units (Level 3), peak current 230 units (Level 3), gap set voltage 60 units (Level 3), wire feed 3 units (Level 1) and wire tension 4 units (Level 1) are the best combination to achieve better surface roughness and kerf width

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2018

Muniappan A., Sathiyaraj R., Thiagarajan C., Jayakumar V., and Kandyala Asha, “Optimization of wedm process parameters using multi objective optimization on the basis of ratio analysis”, vol. Volume 8, 2018.[Abstract]


In this present experimental work, the effect and advancement of machining control parameters over kerf and surface quality in wire cut electrical discharge machining operations were analyzed. The hybrid metal reinforced composite was manufactured by a process named as stir casting utilizing particulates of graphite & Silicon carbide each in Al6061 combination. The analyses were outlined with Taguchi L 27 design matrix. WEDM parameters resemble pulse on time, current, Pulse off time, gapset voltage, wire tension & wire speed are considered. The impact of the machining parameters on the kerf width (KW) and surface roughness (SR) is dictated by utilizing MOORA method. The parameters corresponding to experiment run number 7 are pulse on time 108 units (Level 1), pulse off time 60 units (Level 3), peak current 230 units (Level 3), gap set voltage 60 units (Level 3), wire feed 3 units (Level 1) and wire tension 4 units (Level 1) are the best combination to achieve better surface roughness and kerf width

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2018

Pankaj Giri, Jayakumar V., Charan Kumar V., and Muniappan A., “Investigation of mechanical properties of natural fiber composite with & without fiber surface treatments”, International Journal of Mechanical and Production Engineering Research and Development, vol. 8, no. 4, pp. 785-790, 2018.[Abstract]


Natural fiber composites are used for various applications in automobile, Industrial and domestic fields due to their high flexibility and tensile strength. Many works have been carried out to enhance the mechanical properties of composites. In this paper, the effect of fiber surface treatments on mechanical properties of different natural fiber composites is investigated. In this work, three composites with jute 20% fiber, with banana 10% fiber and hybrid fiber with jute 15% and banana 15% were fabricated and mechanical tests were carried out. Then the fibers were treated with 3% of potassium permanganate to improve the bonding between fiber and matrix and polyester was used as resin along with 3% cobalt naphthenate for curing and 5% methyl ethyl ketone peroxide. The tensile test, flexural and impact tests were conducted on those surface treated composites. The test results comparing with and without surface treated composites showed that there was good improvement in the flexural strength and tensile test when the fibers were treated.

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2018

Santhoshkumar D., Jayakumar V., Ravi Teja Reddy M., and Muniappan A., “Finite Element Modelling and Analysis of Novel Engine Mount: Technical Note”, International Journal of Vehicle Structures and Systems, vol. 10, no. 6, p. 415, 2018.[Abstract]


Vibrations are caused in an engine due to the continuous motion of reciprocating and rotating parts. Engine mounts are used as the vibration isolators from the engine to frame. The absorbing capacity of the mounts should be large enough to withstand the vibrational force for longer periods. Engine mount’s strength depends upon the material and the type of the design. The modelling and assembly of the engine mount is done using solidworks and the analysis of the mount is done using Ansys software. Modal analysis is done on the engine mount at working frequency. With the results obtained, factor of safety is calculated and it is compared with the existing mount. The proposed engine mount model results in encouraging factor of safety value.

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2018

Abdul Hafeez Asif, Jayakumar V., Chintala Sai Virinchy, and Kannaiyan Shanmuganandam, “Effect of Mg, SiC and Fly Ash Particulates in Aluminium Alloy for Automotive Wheel Rim Applications”, International Journal of Vehicle Structures and Systems, vol. 10, no. 6, p. 420, 2018.[Abstract]


For the past few decades the wheels of an automobile are usually made out of alloy materials. Due to the increased demand for peculiarity and enhanced outlook, metal matrix composites can be used for the alloy wheels. They enhance the performance of the vehicle by reducing its weight and thereby increasing its fuel efficiency. Many literature works are initiated and progressed on design and development of automotive alloy wheels. There is a scope for enhancing their properties with reinforcements. This study focuses on manufacturing a novel metal matrix composite material comprising aluminium as metal matrix and magnesium, silicon carbide and fly ash as reinforcements. The newly fabricated composition is tested. The alloy wheel is further analysed using ANSYS. The analysis results are compared with that of the existing aluminium alloy. The obtained results confirm that the proposed metal matrix composite is a reliable replacement for the aluminium alloy.

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2018

Suthan R, Jayakumar V., and Dr. S. Madhu, “Evaluation of Mechanical Properties of Kevlar Fibre Epoxy Composites: An Experimental Study”, International Journal of Vehicle Structures and Systems, vol. 10, no. 6, p. pp.389, 2018.[Abstract]


Kevlar fiber reinforced polymer composites are rapidly growing in manufacturing applications such bicycle tires and racing sails to body armor, bullet proof vests, military helmets, walking boots etc. Kevlar epoxy composite material using the Kevlar fiber and epoxy resin LY-556 was fabricated with manual hand layup procedure. The mechanical characteristics like tensile, impact strength and flexural rigidity were evaluated. With the results obtained it is found that kevlar epoxy composite provides better mechanical characteristics than aluminum. In this work, the possibility of replacing aluminum with Kevlar reinforced epoxy composite material is investigated for various applications viz. manufacturing of bus body frame, bullet proof vests, automobile body, sports applications, fire proof clothing, military helmets etc. Also, the FE analysis is carried out with MIDAS NFX software to correlate the test results with FEA.

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2018

A. Manimaran, V. Muthuraman, and Jayakumar V., “A Novel Tolerance Evaluation Framework for Green Supply Chain Management Implementation”, International Journal of Mechanical Engineering and Technology, vol. 9, no. 1, pp. 152-159, 2018.[Abstract]


Organizations have the urge to to adopt green supply chain management practices since global warming is becoming a burning issue worldwide. Thereby carbon footprint can be reduced throughout the supply chain in an organization. The inception of Green Supply Chain Management (GSCM), conceptually taken its roots during the Industrial Revolution. An attempt is made to examine the scenario of adopting GSCM practices by considering institutional pressures. Efforts are taken to understand the connection between tolerance level of people and adoption of GSCM practices. Strategies are framed to relate the impacts of institutional pressures in adopting GSCM practices and thereby evaluating different tolerance indexes. A new framework is created inter relating GSCM practices, institutional pressures and tolerance indexes. This paper discusses a variety of institutional pressures including market, governmental and competitive sources. Because of a variety of institutional players including market, governmental and competitive sources, Indian industries are experiencing increasing pressures from the eco-system. Tolerance evaluation index is grouped into innovation & development, information sharing, environmental performance and customer service. Here strategies are discussed for improving tolerance evaluation indexes.

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2017

Pankaj Giri, Charan Kumar V., Jayakumar V., and Bharathiraja G., “Some studies on mechanical properties of natural fibre polymer composites with fibre surface treatments”, International Journal of Mechanical Engineering and Technology, vol. 8, no. 12, pp. 1113-1120, 2017.[Abstract]


Natural fibre reinforced polymer composites are being increasingly used for wide range of applications in automobile, industrial and domestic fields due to their high specific strength, lightweight, biodegradability, and environment friendliness. Their availability, low density and price as well as satisfactory mechanical properties, make them attractive alternative reinforcements to glass, carbon and other manmade fibers. It is reported that mechanical properties of natural fiber composites can be enhanced with surface treatment of fibers and also the cleaning of the surface and pretreatment of fibers lead to the improvement in thermal resistance of natural fibre composites. This paper reviews and investigates the various studies carried out on the effect of chemical treatments on mechanical properties and surface topographies of the different natural fibre composites.

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2017

Harihara Kumaran S., Jayakumar V., Mohammed Ajmal Sheriff, Pandiyan A., Shajin Majeed, and Ragul G., “Topology optimization of aircraft hatch lock”, International Journal of Mechanical Engineering and Technology, vol. 8, no. 9, pp. 86–94, 2017.[Abstract]


This paper introduces the optimized design of aircraft hatch lock using topology optimization powered by ANSYS workbench. This can be achieved by 3D modeling of hatch lock in any of the software like CAE, FEA etc., where the models can be imported to the workbench. The main aim of this technique is to reduce the weight of the material without affecting the factor of safety and improving the efficiency of the hatch lock without compromising the strength of the material. Topology optimization includes section of material area where there is no stress acting or minimum stress acting in it. This technique gives advantage of reducing the material area by topology optimizing it and reduction in weight to increase the efficiency of the product. This paper presents topology optimization of aircraft hatch lock, which resulted in the weight reduction without affecting the component strength and other factors.

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2017

Gnanavelbabu A., Arunagiri P., Bharathiraja G., Jayakumar V., and Velmurugan V., “Reduction of operator’s loading and unloading time using lean systems for productivity improvement”, International Journal of Mechanical Engineering and Technology, vol. 8, no. 10, pp. 207–216, 2017.[Abstract]


The objective of this paper is to implement the concepts of lean production in terms of waste elimination, in the matter of identification of waste time, factors leading to it and eventually reduce\eliminate the same to provide guidance to the industry. The research describes an approach to wait time waste of operator manual loading and unloading time measurement. It is uniformly applied and creates results that can be compared from one production line to another. The wait time waste elimination method is a common approach for gathering and combining data to support identification and elimination of time waste in the industrial lifecycle of a product unit. The lean production system is to determine an efficient production process through the removal of waste and to implement a flow. Wastes of various types are seen in the manufacturing area. One among them is the time taken for loading and unloading of work piece. Reduction in time waste will improve the each production line and in an overall improvement in the number of components produced per shift. Industrial data analysis has been carried out for calculating the current time taken and improving the production process by setting the optimal time to get the required output in terms of increase in the number of components produced per shift.

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2017

Jayakumar V., Mohammed Ajmal Sheriff, Muniappan A., Bharathiraja G., and Ragul G., “Implementation of seven tools of quality in educational arena: A case study”, International Journal of Mechanical Engineering and Technology, vol. 8, no. 8, pp. 882–891, 2017.[Abstract]


Total Quality Management (TQM) is a very broad continuous improvement philosophy which has initiated many organizations to jump into the band wagon aimed to drive their business economically and efficiently, satisfying the customer needs. The elementary statistical tools have fetched a lot of importance, as the Seven Indispensable Tools of Quality for any organization to flourish to the zenith of excellence. Implementation of these seven indispensable tools in Educational Arena requires the significance of teaching fraternity as the employees or workforce in general. The customers tend to be the parents, who pay the fees and want quality in return of the good result of their wards. Our current work is a case study, to highlight the general principles of TQM involved and to point out how this approach has been and can be used to improve the quality of an academic institution. This will cover the whole of an educational institution and the administrative structure, rather than academic areas and departments. In fact, the way in which an educational institution is working with quality issues now, will be compared with a TQM approach and the weaknesses and strengthens of the quality work of an institution will be recognized. In order to reach the objectives of this case study, we will use primary data in the form of interviews, brainstorming and secondary data in the form of literatures, scientific articles, books and web pages. To be succinct, the academic excellence tools carried out in our work can be effectively implemented in the higher educational institutions to enhance the quality of education and thereof students' satisfaction.

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2017

Shanmuganandam K., Velmurugan V., Jayakumar V., Madhu S., and Kumaran P., “Heat transfer enhancement in shell and tube heat exchangers using inserts”, International Journal of Mechanical Engineering and Technology, vol. 8, no. 10, pp. 180 - 184, 2017.[Abstract]


Heat exchangers are widely used in thermal applications. The effective performances of heat exchangers depend on their heat transfer rate. In this work an attempt is made to study the effect of inserts viz., twisted tape inserts, glass sphere packing and pebble packing in increasing the heat transfer rate in a shell and tube heat exchanger. The water to water system is considered with hot water on shell side and cold water on tube side. Furthermore the results obtained were compared with performance of the heat exchanger without using inserts. It was inferred that the heat transfer rate increased with usage of inserts. The twisted tape inserts exhibited better performance than glass sphere packing and pebble packing.

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2017

Thiagarajan C., Ranganathan S., Jayakumar V., Muniappan A., and Anoop Johny, “Evaluation of grinding process parameters of AL/SIC composite using desirability approach”, International Journal of Mechanical Engineering and Technology, vol. 8, no. 10, pp. 190–206, 2017.[Abstract]


This paper aims at analyzing multiple grinding characteristics of Al/SiC composites produced by stir casting. Desirability function-based approach is employed wherein the process parameters like wheel velocity, work piece velocity, feed rate and depth of cut were varied to obtain optimum tangential grinding force, surface roughness and grinding temperature. Experiments were conducted on a cylindrical grinding machine using Box-Behnken Design (BBD). Experiments were carried out using Al 2 O 3 grinding wheel of diameter 300 mm. Empirical models were developed for the grinding process parameters of Al/SiC composites for predicting the optimum tangential grinding force, surface roughness and grinding temperature. The results showed that high wheel velocity, medium work piece velocity, low feed rate and low depth of cut are necessary to minimize the tangential grinding force, surface roughness and grinding temperature for grinding of Al/SiC composites.

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2017

Muniappan A., Thiagarajan C., Senthiil P. V., Jayakumar V., and Shaafi T., “Effect of wire-EDM process parameters on cutting speed of AL6061 hybrid composite”, International Journal of Mechanical Engineering and Technology, vol. 8, no. 10, pp. 185–189, 2017.[Abstract]


In this paper, the effect of different wire electrodes used in wire electrical discharge machining (WEDM) on the machining characteristics of Al/SiC/Graphite has been presented. Aluminium metal matrix composites reinforced with silicon carbide particulate find several applications due to their improved mechanical properties for a wide variety of aerospace and automotive applications. The hybrid composite (Al6061/SiC/Graphite) is prepared by stir casting method. These reinforcements have 10-13 micron size particles of SiC & graphite. Three types of wire materials such as Brass wire, zinc coated wire and diffused coated wires have been used. The process performance is measured in terms of cutting speed. Taguchi experimental design strategy is used in the experimentation. Six process parameters, namely pulse on time, pulse off time, peak current, gap set voltage, wire feed and Wire tension have been considered. Cutting speed, kerf width, surface roughness is calculated for each experiment. In this paper cutting speed is compared and studied for the different wire electrodes. In this study, diffused coated wire electrode's performance is better than the other wire electrodes.

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2017

Ragul G., Reddy C. V., Jayakumar V., Abhijit Roy, Abhishek Samanta, and Sreejith C., “Design, analysis and impact behaviour of magnesium alloys (Zk60A) of low pressure die casting for automotive wheels by finite element method”, ARPN Journal of Engineering and Applied Sciences, vol. 12, no. 22, pp. 6488-6493, 2017.[Abstract]


This paper presents the design, analysis and impact behaviour of magnesium alloy automotive wheels by finite element method. A new combination of alloy materials is attempted to improve the quality and service life of the wheel rim with less fatigue and reduced cost. Magnesium alloy (Zk60A) combination is selected for this work and wheel rim is designed using the Solidworks modelling software. The structural analysis of wheel rim is carried out using ANSYS software and the results are compared with that of the steel alloy. It is found that the Zk60A magnesium alloy results in lighter wheel and enjoys associated benefits like reduced stress, better mileage, improved service life, etc. With this encouraging result, the Zk60A magnesium alloy wheel will provide a better alternate to the existing materials.

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2017

Saran V., Jayakumar V., Bharathiraja G., Jaseem K., and Ragul G., “Analysis of Natural Frequency for an Aircraft Wing Structure Under Pre-Stress Condition”, International Journal of Mechanical Engineering and Technology, vol. 8, no. 8, pp. 1118–1123, 2017.[Abstract]


The content of this paper is all about the analysis of natural frequency for avoiding resonance on the material to prevent failure and to simulate according to the boundary conditions. The Vibrations of an aircraft wing structure is analyzed using CATIA and ANSYS software. The natural frequency of the component is analyzed by the frequency at which a system vibrates about an altitude and a time period, when not subjected to a continuous or repeated external force. A wing structure is the main machine component of the aircraft which is connected to the fuselage and it is acts like a cantilever beam in which the one end of the wing is fixed and other end remains free at the end. The wing structure consists of spars, stingers, rear ribs, mid ribs and skin. In pre-stress condition, the pressure force is acting on the wing structure while flying in the sky, the overall deformation of the wing structure is calculated using a ANSYS workbench. By analyzing the frequency of the wing structure its helps to calculate resonance that should not be equal to or more than the natural frequency. The material used for aircraft wing is aluminum alloy which is less in weight and having density, one third of the steel that does not affects its strength.

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2016

Pradeep P., Edwin Raja Dhas J., Suthan R., and Jayakumar V., “Characterization of palm fibers for reinforcement in polymer matrix”, ARPN Journal of Engineering and Applied Sciences, vol. 11, no. 12, pp. 7927-7930, 2016.[Abstract]


This work presents the extraction of fibers from various parts of the palm tree, its chemical and physical property
characterization through standard tests and also development of composite samples with these fibers for testing tensile
strength on a computerised universal testing machine. The results obtained through experimentation were compared with
few other natural fiber based composites and the values were presented. The composite developed possess appreciable
tensile strength and shall be used in automotive industry, aerospace applications, etc.

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2016

Hemanta Singha, Jayakumar V., and Ragul G., “Investigation on Effects of Alternative Process Routing in the Design of Cellular Manufacturing System”, Indian Journal of Science and Technology, vol. 9, no. 36, pp. 1-5, 2016.[Abstract]


Background/Objectives: The adoption of cellular manufacturing becomes promising manufacturing philosophy to address the problems of today’s manufacturing plants such as an increasingly turbulent environment and rising customer requirements.

Method/Statistical Analysis: Group Technology and Cellular Manufacturing System (CMS) have together paved way for the same through processing of similar parts groups as part families and the formation of a machine cell dedicated for the manufacture of the part family. The traditional CMS design methods do not incorporate many real-life manufacturing parameters such as batch size and machine flexibility, various cost factors at the design stage and also they are not taking the advantage of the machine flexibility in terms of coexistence of alternate process routing.

Findings: In this work, a comprehensive mathematical model has been developed capturing these exact production parameters. An optimal solution is obtained using Lingo 8.0 software package and a solution methodology of best possible cell configurations is formed.

Applications/Improvements: The effect of considering the alternate process routing in the design stage of CMS is evaluated and it is found that routing flexibility results in better cell configurations.

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2016

N. Sivakumar, Geetha N. K., Venkatamuthukumar J., and Jayakumar V., “Mechanical Studies on Pure and Fe3+ Doped Potassium Hydrogen Phthalate Single Crystals for Device Fabrications”, Indian Journal of Science and Technology, vol. 9, no. 36, 2016.[Abstract]


Background/Objectives: Mechanical properties of the selected materials play an important role in device fabrications. Thus the perfect cleavage (010) plane of doped and un-doped Potassium Hydrogen Phthalate (KHP) crystal is subjected to Vicker's micro hardness study.
Methods/Statistical Analysis: Slow evaporation solution growth method is employed for the growth of Fe³⁺ doped and un-doped Potassium Hydrogen Phthalate (KHP) crystals. Here, 0.1 mol% of FeCl3 used as dopant. Saturated solution of both doped and un-doped KHP solutions are prepared according to the solubility data (12.5g/100ml at 30°C).
Findings: A well developed (010) plane of pure and un-doped crystals have been subjected to hardness studies with various loads. It is found that Vickers Hardness numbers (HV) for undoped and doped KHP crystals varied for different loads. Meyer's index or work hardening co-efficient (n) values are found to be greater than 1.6 which reveals that the grown crystals are belongs to soft material's category. i.e., for pure KHP the value of 'n' is 3.68 and for Fe doped KHP, it is 3.46. The minimum load indentation (W) to initiate the plastic deformation on the surface of the crystals are calculated based on Hays and Kendall's theory. The value of W for KHP and doped KHP are found to be 1.965 and 4.368 respectively. The hardness related constants like materials constant (k1) and load dependent constant (A1) for the pure and un-doped KHP crystals have been estimated. The Elastic stiffness constant (C11) are also calculated from Vickers micro hardness values. Applications/Improvements: Potassium Hydrogen Phthalate (KHP) is an efficient crystal analyzer material and is used in X-ray spectrometer. The improvement in hardness by dopant provides the use of materials for efficient optical device applications.

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2016

Velmurugan V., Suryakumari T. S. A., Pandiyan A., and Jayakumar V., “Modeling and analysis of semi-active hydraulic engine mount using finite element analysis”, ARPN Journal of Engineering and Applied Sciences, vol. 11, no. 16, pp. 10097-10102, 2016.[Abstract]


It is well known that the problem of Noise and vibration is one of the major issues in the automobiles and particularly in the diesel engine vehicles. The diesel engine vehicle usage is been increased due to the fuel economy and mileage. But the main disadvantage is the vibration and noise that arises in the engine, whereas it is more in the diesel engine when compared to the petrol engine. It is well known that the power train is the main source of the vibration producing part in the vehicle and which is been mounted on the engine frame that supplies the power to the vehicle. The part that connects the engine and the chassis is the engine mount that plays a vital role in transmission of the engine vibration to the vehicle structure which has to be designed in such a way that the vibration and noise from the engine power train can be isolated, here we are going to use a semi-active hydraulic engine mount that reduces the vibration of the engine and subsequently do the modeling and analysis of the semi-active hydraulic engine mount and to compare with the mount characteristics of the other types of engine mounts that are available and conclude that the semi-active engine mount is one of the feasible component to reduce the vibration inside the cabin of the diesel engine passenger car. © 2006-2016 Asian Research Publishing Network (ARPN). All rights reserved.

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2014

Jayakumar V. and Raju, R., “A Simulated Annealing Algorithm for Machine Cell Formation Under Uncertain Production Requirements”, Arabian Journal for Science and Engineering, vol. 39, no. 10, pp. 7345-7354, 2014.[Abstract]


Due to customized products, shorter product life cycles, and unpredictable patterns of demand, the manufacturing industries are faced with stochastic production requirements. The production requirements (product mix and demand) may not be known exactly at the time of designing the manufacturing cell. It is likely that a set of possible production requirements (scenarios) with certain probabilities may be given at the design stage. Though a large number of research works on manufacturing cell have been reported, very few of them have considered random product mix constraint at the design stage. This paper presents a nonlinear mixed-integer mathematical model for the cell formation problem with the uncertainty of the product mix for a single period. The model incorporates real-life parameters such as alternate routing, operation sequence, duplicate machines, uncertain product mix, uncertain product demand, batch size, processing time, machine capacity, and various cost factors. The cost factors considered are machine amortization costs, operating costs, inter-cellular material handling costs, and intra-cellular material handling costs. A consultancy work is carried out for the proposed auto-components manufacturing industry to be located in the suburb of Chennai. In this paper, a solution methodology for best possible cell formation using simulated annealing algorithm is presented and the computational procedure has been illustrated for the case study undertaken.

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2011

Jayakumar V. and Raju, R., “A multi-objective genetic algorithm approach to the probabilistic manufacturing cell formation problem”, South African Journal of Industrial Engineering, vol. 22, no. 1, pp. 199-212, 2011.[Abstract]


Due to customised products, shorter product life-cycles, and unpredictable patterns of demand, manufacturing industries are faced with stochastic production requirements. It is unlikely that the production requirements (product mix and demand) are known exactly at the time of designing the manufacturing cell. However, a set of possible production requirements (scenarios) with certain probabilities are known at the design stage. Though a large number of research works on manufacturing cells have been reported, very few have considered random product mix constraints at the design stage. This paper presents a nonlinear mixed-integer mathematical model for the cell formation problem with the uncertainty of the product mix for a single period. The model incorporates real-life parameters like alternate routing, operation sequence, duplicate machines, uncertain product mix, uncertain product demand, varying batch size, processing time, machine capacity, and various cost factors. A solution methodology for best possible cell formation using a genetic algorithm (GA) is presented, and the computational procedure is illustrated for the case study undertaken.

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2011

Fazil J. and Jayakumar V., “Investigation of airfoil profile design using reverse engineering Bezier curve”, ARPN Journal of Engineering and Applied Sciences, vol. 6, 2011.[Abstract]


Though it is easier to model and create an airfoil profile in CAD environment using camber cloud of points, after the creation of vane profile it is very difficult to change the shape of profile for analysis or optimization purpose by using cloud of points. In this paper, we investigate and describe the creation of airfoil profile in CAD (CATIA) environment using the control point of the camber profile. By means of changing the values of control points, the shape of the profile can be easily changed and also the design of the cambered airfoil is established without affecting the basic airfoil geometry. In this paper, the Quintic Reverse Engineering of Bezier curve formula is used to find the camber control points from the existing camber cloud of points.

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2010

Jayakumar V. and Raju, R., “An adaptive cellular manufacturing system design with routing flexibility and dynamic system reconfiguration”, European Journal of Scientific Research, vol. 47, no. 4, pp. 595 - 611, 2010.[Abstract]


Customized products, shorter product life-cycles and unpredictable patterns of demand have challenged the manufacturers to improve the efficiency and productivity of their production activities. Manufacturing systems should be able to adjust or respond quickly to adopt necessary changes in product design and product demand without major investment. Since shorter product life cycles are an increasingly important issue in cellular manufacturing, one cannot assume that the designed cells will remain effective for a long time. Ignoring the planned new product introductions would necessitate subsequent ad hoc changes to the cellular manufacturing systems (CMS) causing production disruptions and unplanned costs. Thus one has to incorporate the product life cycle changes in the design of cells. This type of model is called the multi-period CMS or dynamic CMS. Since the formed cells in the current period may not be optimal for the next period, the reconfiguration of the cells is required. In this paper, a new approach called adaptive design strategy, is presented to design a cellular manufacturing system that responds to changing product mix and / or demand in future periods by rearranging the current manufacturing system. A multi-objective non-linear mathematical model and an optimal solution procedure is developed simulating the exact situation of dynamic environment. The model incorporates real-life parameters like alternate routing, operation sequence, duplicate machines, product mix, product demand, varying batch size, processing time, machine capacity, and various cost factors. Also a solution methodology of best possible cell formation using a Lingo 11.0 optimal software package is presented and a critical analysis is made for converting functional layout into CMS incorporating realistic constraints and integrated approach.

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2010

Jayakumar V. and Raju, R., “Investigation of Applications of SA in the Design of Dynamic Cellular Manufacturing Systems”, International Journal of Engineering and Technology, vol. 2, no. 4, pp. 220-224, 2010.[Abstract]


Manufacturing industries are under intense pressure from the increasingly competitive global marketplace. Shorter product lifecycle, time to market and diverse customer needs have challenged manufacturers to improve the efficiency and productivity of their production activities. Manufacturing systems should be able to adjust or respond quickly to adopt necessary changes in product design and product demand without major investment. Traditional manufacturing systems are not capable of satisfying such requirements. Although a cellular manufacturing system (CMS) provides great benefits, the design of CMS is complex for real life problems. The design of such a kind of manufacturing system under dynamic production environment, with variety and demand varying between each planning horizon, requires pervasive use of a Metaheuristics such as Genetic Algorithm (GA), Simulated Annealing algorithm (SA), and Tabu Search (TS). The dynamic cell formation (CF) problem (involving the formation of a mathematical model depicting the variable product mix and demand across the planning horizons) is known to be one of the NP-hard combinational problems. Although some optimization algorithms can find the optimal solution for small- and medium-sized problems, they have a disadvantage in that the memory and computational time requirements are extremely high, and increase exponentially, as the problem size increases. In such situations, meta-heuristics are used for exploring and exploiting the search space to obtain good solutions. In contrast to other stochastic searches, SAs in particular have the following unique features: it does not get trapped in local minimum. Allow uphill moves controlled by parameter called temperature. Final result not dependent on initial state.These features often makes them a preferable choice over traditional heuristics. The objective of this paper is to review how the SA has been applied so far for the Design of Cellular Manufacturing System application. In this paper we present a comprehensive review of the works that applied SA for CMS deign and suggest some directions for future research.

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2009

Jayakumar V. and Raju, R., “Some aspects of designing a dynamic cellular manufacturing system for deterministic and stochastic production requirements”, International Journal of Applied Engineering Research, vol. 4, no. 10, pp. 1895 - 1902, 2009.[Abstract]


Short production life cycles, high production variety, unpredictable demand, and short delivery times have led to the development of conditions in which manufacturing systems operate under a dynamic and uncertain environment. Most of the current cellular manufacturing (CM) design methods have been developed for static production and deterministic demand states. Existing design methods employ simplifying assumptions, which often deteriorate the validity of the models used for obtaining solutions. Two simplifying assumptions used in existing design methods are: product mix and demand do not change over the planning horizon, and each operation can be performed by only one machine type. Because of the increasing variety of consumer goods and decreasing product life cycles, most manufacturing organizations encounter dynamic (i.e., fluctuations in product mix and demand) and stochastic (i.e., unknown product mix/or demand in each period) production requirements. This paper reviews the various aspects of design of cellular manufacturing systems (CMSs) for dynamic and stochastic production requirements and provides directions for future research.

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Publication Type: Book

Year of Publication Title

2011

Jayakumar V. and Kumar M., Engineering Mechanics. New Delhi, India: Prentice Hall India (PHI) Pvt. Ltd., 2011.

2008

Jayakumar V., Total Quality Management. Chennai, Tamil Nadu, India: Lakshmi Publications, 2008.

2005

Jayakumar V., Dynamics of Machinery. Chennai, Tamil Nadu, India: Lakshmi Publications, 2005.

2003

Jayakumar V., Kinematics of Machinery. Chennai, Tamil Nadu, India: Lakshmi Publications, 2003.