Qualification: 
Ph.D, M.E, BE
t_satishkumar@cb.amrita.edu

Dr. T. Satish Kumar currently serves as Assistant Professor (Sr. Gr.) at the Department of Mechanical Engineering, Amrita School of Engineering, Coimbatore. His areas of research include Metal Matrix Composites, Optimization Techniques, Functionally Graded Materials, Heat Treatment Process, Friction Stir Welding and Tribological Characteristics. He has published more than 22 research papers in reputed international journals. He is guiding B. Tech., M. Tech. students and research scholars in his core areas.

Education

  • Ph. D.
    PSG College of Technology, Coimbatore
    Anna University, Chennai.
    2016
  • M. E. (Industrial Metallurgy)
    PSG College of Technology, Coimbatore
    Anna University, Chennai.
  • B. E. (Mechanical Engineering)
    N.B.K.R Institute of Science & Technology
    SV University -Tirupati

Experience

Field of Work Designation Period Organization
Teaching & Research Assistant Professor (Sr.Gr.) May 2019 - Present Amrita School of Engineering
Assistant Professor (Sr.Gr.) August 2016 - May 2019 PSG College of Technology, Coimbatore
Assistant Professor June 2011 - August 2016 PSG College of Technology, Coimbatore

Sponsored Project

Funding Agency Title of the Project Duration Role
UGC Synthesis and characterization of Al-Zn-Mg alloy zircon reinforced composites” (2015-2017) Two Years Principal Investigator

Reviewer for International Journals

  1. Science and Technology of Materials
  2. Materials Research Ibero-american Journal of Materials
  3. Journal of the Chinese Advanced Materials Society
  4. Indian Journal of Engineering & Materials Sciences
  5. Tribology in Industry

Publications

Publication Type: Journal Article

Year of Publication Title

2019

G. Venkatesh, R. Subramanian, T. Satish Kumar, Abuthakir, J., L. Berchmans, J., and Sethupathi, K., “Investigation on structural and magnetic properties of Al3+ and Ce3+ doped hexaferrites”, Materials Today: Proceedings, 2019.[Abstract]


Hard magnetic ferrites or Hexa ferrites (AB12O19, A-Ba, Sr, Ca, Pb) are widely used as permanent magnets, in refrigerator seal gaskets, microphones, and speaker gaskets. They can also be used in small motors for cordless appliances and portable magnetic storage devices. In the present research, Al and Ce doped hexaferrites (AB12O19) were chosen and synthesized by combustion technique using the precursors (Sr(NO3)2, Ba(NO3)2, Ca(NO3)2, Fe(NO3)3, Al(NO3)3, Ce(NO3)3) and fuels (C6H8O7, C12H22O11). The prepared powder was calcined at different temperature (800 °C, 900 °C, 1100 °C) for 12 h. Phase identification was done by using X-Ray Diffraction (XRD) technique by which phases were confirmed and also the morphological behavior was studied by using Scanning Electron Microscopy (SEM). Elemental analysis was done by using Energy Dispersive Spectroscopy. The intrinsic magnetic properties were studied by using Vibrating Sample Magnetometer, and the hexaferrites are found to be affected by partial substitution of Sr and Fe sites by rare earth elements (RE3+) and non-magnetic trivalent Al3+ ions respectively, and it is same in case of BaFe12O19 and CaFe12O19. The insertion of Ce3+ and Al3+ into hexagonal lattice enhances the coercivity due to increase in magneto-crystalline anisotropy or grain refinement. Thus, the hexaferrites are doped by Ce and Al to achieve Sr0.9Ce0.1Fe10Al2O19, Ba0.9Ce0.1Fe10Al12O19, Ca0.9Ce0.1Fe10Al12O19.

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2019

T. Satish Kumar, Nampoothiri, J., Raghu, R., Shalini, S., and Subramanian, R., “Development of Wear Mechanism Map for Al–4Mg Alloy/MgAl2O4 In Situ Composites”, Transactions of the Indian Institute of Metals, pp. 1-7, 2019.[Abstract]


Dry sliding wear behaviour of Al–4Mg alloy and Al–4Mg alloy/MgAl2O4 in situ composites was examined under normal loads of 10–30 N at sliding speeds of 1, 3, 5 and 7 m/s and sliding distance of 1500 m using a pin-on-disc apparatus. Al–4Mg alloy with different wt% (1, 2 and 3) of MgAl2O4 in situ composites was synthesized via ultrasonic cavitation by the addition of H3BO3 powders. Unreinforced alloy and composites were characterized to conclude the role of MgAl2O4 in modifying the wear behaviour of the composite. Worn-out samples and wear debris were examined by scanning electron microscopy and X-ray diffraction in order to obtain the major wear mechanisms of the developed composites. The addition of MgAl2O4 significantly reduces the wear rate of Al–4Mg alloy at higher loads. The operating wear mechanisms observed were delamination, oxidation, abrasion, adhesive, thermal softening and plastic deformation modes. © 2019, The Indian Institute of Metals - IIM.

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2019

T. Satish Kumar, Shalini, S., G Priyadharshini, S., and Subramanian, R., “Microstructure, hardness and wear behaviour of NbC reinforced AA7075 matrix composites fabricated by friction stir processing”, International Journal of Materials Research, vol. 110, pp. 114–120, 2019.[Abstract]


Aluminium alloy AA7075 matrix composites reinforced with different vol.% of niobium carbide were fabricated by friction stir processing. Microstructural investigations of the composites as well as the interface between AA7075 and NbC were conducted using optical microscopy and scanning electron microscopy. SEM micrographs revealed a homogeneous dispersion of NbC in the AA7075 matrix in all the composites. SEM studies also revealed very good bonding of the dispersoid particles with the matrix along with significant degree of grain refinement. Hardness and wear resistance of AA7075 matrix was enhanced both by the addition of NbC particles as well as grain refinement. Wear behaviour studies showed that predominant wear mechanisms were abrasive wear and adhesive wear.

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2019

T. Satish Kumar, G Priyadharshini, S., Shalini, S., K Kumar, K., and Subramanian, R., “Characterization of NbC-Reinforced AA7075 Alloy Composites Produced Using Friction Stir Processing”, Transactions of the Indian Institute of Metals, vol. 72, no. 6, pp. 1593–1596, 2019.[Abstract]


Aluminium alloy AA7075 matrix composites reinforced with varying vol% (5, 10 and 15 vol%) of niobium carbide (NbC) were fabricated by friction stir processing. Micrographs revealed that a homogeneous dispersion of NbC in the AA7075 matrix had no interfacial reaction. Significant degree of grain refinement was observed in the composites due to dynamic recrystallization and pinning effect of NbC particles. Hardness and tensile strength of AA7075 matrix were found to be enhanced by the addition of NbC particles. The fracture surface of the tensile-tested samples revealed deep dimples indicating a good ductility.

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2019

R. Raghu, Nampoothiri, J., T. Satish Kumar, and Subramanian, R., “Microstructure and Mechanical Properties of Al/MgAl 2 O 4 In Situ Composites Synthesized by Ultrasonic Cavitation”, Transactions of the Indian Institute of Metals, vol. 72, pp. 1013–1021, 2019.[Abstract]


Al–4Mg/MgAl2O4 composites were successfully synthesized by the in situ reaction of Al–4Mg alloy melt and H3BO3 precursor in the presence of ultrasonic cavitation field. Ultrasonic-assisted synthesis facilitated generation of ~ 350-nm-sized MgAl2O4 particles. Enhanced reaction along with dispersion of MgAl2O4 was perceived due to the synergetic effect of ultrasonic cavitation. The presence of MgAl2O4 particles resulted in 3–4 times reduction in matrix alloy grain size, and the grain refinement was further enhanced by ultrasonic treatment. Compared to unreinforced alloy, ultrasonicated Al/MgAl2O4 composite exhibited an improvement in ultimate tensile strength by ~ 30 MPa with ~ 85% of ductility retention. Grain boundary strengthening, Orowan dispersion strengthening, coefficient of thermal expansion mismatch strengthening and load-bearing strengthening were the anticipated mechanism for enhancement in mechanical properties.

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2019

K. Kanagarajan, Anburaj, J., T. Satish Kumar, Chandrasekar, A., and Ramanathan, S., “Thermodynamic Simulation of Niobium-Containing Austenitic Stainless Steels: Microstructure and Corrosion Properties”, Transactions of the Indian Institute of Metals, vol. 72, no. 6, pp. 1627–1630, 2019.[Abstract]


In the present work, as cast niobium (Nb) alloyed (0.66 wt%, 1 wt% and 1.75 wt% of Nb) austenitic stainless steels were solution annealed and sensitized at 550 °C, 650 °C and 750 °C for a period of 12 h. Niobium carbide (NbC) precipitation behavior was simulated using ThermoCalc-PRISMA. The microstructural features were studied by SEM. Corrosion properties were analyzed by double-loop electrochemical potentiokinetic reactivation test and electrochemical impedance spectroscopy. Results showed that the nucleation rate and volume fraction of NbC precipitates at grain boundaries (GBs) in 1.75%Nb alloy were higher than other two alloys. The 1.75%Nb alloy was found to have a lower degree of sensitization compared to other two alloys due to formation of NbC at GBs. The corrosion behavior of alloys in the sensitized conditions was in total contrast to that of solution-annealed condition.

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2019

R. J Kumar, Jayaraman, M., T. Satish Kumar, G Priyadharshini, S., and J Kumar, S., “Characterization of Y2O3 particles reinforced AA6082 aluminum matrix composites produced using friction stir processing”, Materials Research Express, vol. 6, no. 8, p. 086509, 2019.[Abstract]


The effect of Yttrium oxide (Y2O3) particles on the microstructure and mechanical behaviour of AA6082 alloy composite fabricated via Friction stir process (FSP) has been investigated. Structural analysis is carried out using x-ray diffraction (XRD) and microstructural analysis is carried out using Optical Microscopy (OM) and Scanning Electron Microscope (SEM). From the analysis it is inferred that the Y2O3 particles significantly affect the microstructure, hardness, tensile and wear properties of AA6082 alloy. The observed mechanical properties are interconnected with microstructure and fractography.

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2018

T. Satish Kumar, Shalini, S., and R. Subramanian, “Microstructure and hardness of Al-Si-Mg alloy matrix hybrid composites reinforced with zircon and alumina”, National Journal of Technology, vol. 14, pp. 79-82, 2018.

2018

S. Shalini, Prabavathy, N., Balasundaraprabhu, R., T. Satish Kumar, Velauthapillai, D., Balraju, P., and Prasanna, S., “Studies on DSSC encompassing flower shaped assembly of Na-doped TiO2 nanorods sensitized with extract from petals of Kigelia Africana”, Optik - International Journal for Light and Electron Optics, vol. 155, pp. 334–343, 2018.[Abstract]


Flower of Kigelia Africana constitute anthoyanin as a predominant flavonoid pigment and are responsible for absorption of light in visible region. In the present study, the extract of this flower is used as sensitizer for DSSC. Na-doped TiO2 nanorods have been synthesized via one step hydrothermal method and used as photoanode. XRD analysis of Na-doped TiO2 nanorod samples revealed the formation of single rutile phase structure. FESEM images revealed the formation of nanorods and overgrowth of nanoflowers on increasing the amount of the dopant. The photoelectric conversion efficiency of DSSC increased from 1.09% to 1.56% when compared to undoped TiO2 based DSSC that exhibited an efficiency of 0.87%. A relatively high open circuit voltage was obtained because of nanorods structure and doping technique. The downward shift of flat band voltage with Na-doped TiO2 improved the driving force for electron injection, leading to the enhanced photocurrent density.

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2018

T. Satish Kumar, Shalini, S., K Kumar, K., Thavamani, R., and Subramanian, R., “Bagasse Ash reinforced A356 alloy composite: synthesis and characterization”, Materials Today: Proceedings, vol. 5, pp. 7123–7130, 2018.[Abstract]


Sugarcane bagasse has been attracting attention recently as a highly potential and versatile ingredient in composite materials due to its availability, low cost and biodegradability. In the present study, bagasse ash particles reinforced A356 alloy composites were produced by stir-casting method. 2, 4, 6, 8 and 10 wt% of bagasse ash particles were added to the base alloy for successful synthesis of composites. Density, microstructure and mechanical properties of the unreinforced alloy and the composites were studied. Density of the composites decreased with increase in wt% of bagasse ash particles. As-cast microstructure of the composites confirms the uniform distribution of bagasse ash particles. Significant improvement in the hardness, compressive strength, tensile strength and decrease in impact strength of the composites was observed with increase in wt% of bagasse particles. These results confirm that bagasse ash particles reinforced composites can give enhanced properties at lower densities.

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2018

S. Shalini, Balasundaraprabhu, R., T. Satish Kumar, Muthukumarasamy, N., Prasanna, S., Sivakumaran, K., and Kannan, M. D., “Enhanced performance of sodium doped TiO2 nanorods based dye sensitized solar cells sensitized with extract from petals of Hibiscus sabdariffa (Roselle)”, Materials Letters, vol. 221, pp. 192–195, 2018.[Abstract]


Sodium (Na) doped titanium dioxide (TiO2) nanorods were successfully synthesized by one-step hydrothermal method. The effect of sodium doping in improving the performance of dye sensitized solar cells (DSSC) has been discussed. Field Emission scanning electron micrograph (FESEM) revealed the formation of nanorods and nanoflowers for doped samples. X-ray diffraction (XRD) pattern of doped samples reveal slight shift towards lower angle confirming the effective substitution of Ti4+ by Na+. The photoelectric conversion efficiency of 6% sodium doped TiO2 based DSSC was 1.65% and is 79% higher than the undoped TiO2 based DSSC that exhibited an efficiency of 0.92%. This improvement in efficiency is ascribed due to less electron-hole recombination rate.

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2018

S. Shalini, Balasundaraprabhu, R., T. Satish Kumar, Sivakumaran, K., and Kannan, M. D., “Synergistic effect of sodium and yeast in improving the efficiency of DSSC sensitized with extract from petals of Kigelia Africana”, Optical Materials, vol. 79, pp. 210–219, 2018.[Abstract]


TiO2 nanostructures with two different dopants, sodium and yeast have been successfully synthesized by hydrothermal method. Doping sodium is found to extend the absorbance of TiO2 into the visible region as well as it acts as mordant in fixing and improving the absorption of dye. Yeast, as a dopant, can help in absorption of more anthocyanins from the natural dye extract by TiO2 and also aids in retaining the colour of the dye and increases the stability of the dye at varying pH. Anthocyanins are the major class of pigment present in the newly addressed maroon, velvety and trumpet shaped flower “Kigelia Africana”. X-ray diffraction analysis revealed the formation of rutile phase for all the samples. Field Emission Scanning Electron microscopy images revealed the formation of nanorods and nanoflowers with change in dopant as well as their concentration. The photoelectric conversion efficiency of DSSC with undoped TiO2 photoelectrode is 0.87% and DSSC with 6% Na doped TiO2 photoelectrode is 1.56%. The efficiency of DSSC with 6% Na+6% yeast doped TiO2 photoelectrode is found to increase from 2.09% (DSSC with 6% Na+4% yeast doped TiO2 photoelectrode) to 2.31% on varying the dopant concentration. Doping is also found to increase the dye absorption and superior charge transport efficiency which in turn helps to improve the performance of DSSC.

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2018

S. Shalini, T. Satish Kumar, and K., K. Kumar, “Synthesis and Characterization of Al-Zn-Mg alloy / Zircon Sand Reinforced Composites”, Archives of Metallurgy and Materials, vol. 63, pp. 689-695, 2018.[Abstract]


Aluminium based metal matrix composite (Al-MMC’s) are much popular in the field like automobile and aerospace industries, because of its ease of fabrication process and excellent mechanical properties. In this study, Al-Zn-Mg alloy composite reinforced with 3, 6 and 9 v % of zircon sand was synthesised by stir casting technique. The microstructure of the composites revealed uniform distribution of reinforced particles. Hardness, tensile strength and wear resistance of Al-Zn-Mg alloy/zircon sand composite were found to increase with increase in v % percentage of zircon sand. Scanning Electron Microscope analysis of wear tested sample surface of composites revealed no evidence of plastic deformation of matrix phase. Particle pulls out and abrasive wear was the common feature observed from all the composites.

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2018

R. Raghu, Nampoothiri, J., and T. Satish Kumar, “In-situ generation of MgAl2O4 particles in Al-Mg alloy using H3BO3 addition for grain refinement under ultrasonic treatment”, Measurement, vol. 129, pp. 389–394, 2018.[Abstract]


A novel approach was made for synthesis of in-situ MgAl2O4 particles in Al-4Mg alloy by addition of H3BO3 (0–2 wt%) precursor under Ultrasonic Treatment (UT). The synthesized composites were characterized by Scanning Electron Microscopy (SEM) and Energy Dispersive Spectroscopy (EDS) analysis. An improved reaction of H3BO3 with aluminium alloy was observed on 5 min UT. Increase in H3BO3 addition reduces the grain size of the aluminium alloy till 5–6 times although the ultrasonic effect further contributes greatly to the grain refinement by 2–3 times reduction additionally. Substantial grain refinement by UT was elucidated to the cavitation enhanced reaction of H3BO3 which resulted in the increased number density of MgAl2O4 particles. Enhanced wettability of the MgAl2O4 particles under UT makes it as potential heterogeneous nucleation sites of Al.

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2018

T. Satish Kumar, K Kumar, K., Shalini, S., and Subramanian, R., “Synthesis and Characterization of Functionally Graded Al-6Cr-Y2O3 Composites”, Archives of Metallurgy and Materials, vol. 63, pp. 1649-1655, 2018.[Abstract]


The present investigation aims at fabricating a functionally graded Al-6Cr-Y2O3 composite and its microstructural and property characterization. Al-6Cr-alloys with varying percentage of Y2O3 (5-10 vol. %) have been used to fabricate FGM by powder metallurgy route. The samples were subsequently subjected to solution treatment at 610°C for 4 h followed by artificially aged at 310°C for 4 h. The microstructure, hardness and wear behavior of these FGM have been evaluated. FGM exhibited superior hardness (360 ± 5 VHN) as compared to the unprocessed composites (220 ± 5 VHN) due to the uniform dispersion of Y2O3 particles. Wear resistance of Al-6Cr-10 Y2O3 FGM were compared that of with pure Al-6Cr alloy by dry abrasive wear test. Al-6Cr-10 Y2O3 FGM composites were found to exhibit higher wear resistance with the minimum wear rate of 0.009 mm3 /m compared to the Al6Cr alloy wear rate 0.02 mm3 /m.

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2018

T. Satish Kumar, Raghu, R., K Kumar, K., Shalini, S., and Subramanian, R., “Optimization of Three Body Abrasive Wear Behaviour of Stir Cast A356/ZrSiO 4 Metal Matrix Composite.”, Tribology in Industry, vol. 40, pp. 633-642, 2018.[Abstract]


In the current research, abrasive wear of A356/15 wt% ZrSiO4 metal matrix composite has been investigated. Microstructural analysis of the fabricated composites revealed that ZrSiO4 particles were uniformly distributed in the matrix. Response Surface Methodology adopted for designing abrasive wear experiments using different parameters such load, speed and time. Experiments were performed using a dry abrasion tester. Surface plots were generated for the interaction of different parameters with the abrasive wear rate. Surface plots show that the wear rate tends to increase with increasing load and sliding distance while it decreases as the speed increases. Regression analysis result in a good relation of the parameters with the wear rate which confirm the accuracy of the model developed. Moreover, the optimal combination of the testing parameters which result in low abrasion wear rate is determined.

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2017

T. Satish Kumar, Shalini, S., and R. Subramanian, “Synthesis and characterization of bagasse ash nanoparticles by sol-gel technique”, National Journal of Technology, vol. 13, pp. 20-23, 2017.

2017

S. Shalini, Prabavathy, N., Balasundaraprabhu, R., T. Satish Kumar, Walke, P., Prasanna, S., and Velayuthapillai, D., “Effect of Na doping on structure, morphology and properties of hydrothermally grown one dimensional TiO 2 nanorod structures”, Journal of Materials Science: Materials in Electronics, vol. 28, pp. 3500–3508, 2017.[Abstract]


Na doped TiO2 nanorod structures have been prepared by one-step hydrothermal method. Structural analysis of undoped and doped TiO2 nanorod samples revealed the formation of single rutile phase structure. XRD plots confirms the effective substitution of Ti4+ with Na+ in the samples by exhibiting a slight shift towards the lower angle in the 2θ value of the diffraction peaks compared to undoped TiO2 sample. The distribution of sodium in TiO2 lattice is confirmed by morphological and EDS analysis. FESEM images of doped samples revealed the formation of structures in the form of nanorods for 2 and 4% of dopant and then to nanoflowers on increasing the amount of dopant to 6%. TEM analysis revealed the formation of nanorods with a diameter about 250 nm. Each nanorod was found to be formed of individual thin nanorods with approx diameter of 25 nm. The presence of sodium (atomic% = 7.60) in the nanorods was also substantiated by EDS studies. From optical studies, with increase in dopant concentration, the absorption edge is seen to be shifted towards the longer wavelength and bandgap tends to show red shift with values varying from 3.0 to 2.74 eV.

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2017

T. Satish Kumar, Subramanian, R., Shalini, S., Gowrishankar, A., and Angelo, P. C., “Effect of zircon particle size on age hardening behavior of A356 alloy based composites”, Metal Science and Heat Treatment, vol. 59, pp. 509–512, 2017.[Abstract]


Melt stirring was used to introduce various amounts of zircon (ZrSiO4) particles of various sizes into aluminum alloy A356 of the Al – Si system. The effect of zircon particle sizes on age hardening behavior of stir-cast A356 alloy/zircon reinforced composites was studied by measuring microhardness after solution treatment and aging for various times. The structure of composites was studied by methods of optical microscopy, x-ray diffraction, scanning electron microscopy combined with energy dispersive x-ray spectroscopy, and high-resolution transmission electron microscopy. The addition of zircon was found to accelerate age hardening of the matrix alloy. It is established that the maximum hardness increases and the time of attaining this maximum decreases with growing content of zircon particles and with reduction in their average size.

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2016

T. Satish Kumar, Subramanian, R., Shalini, S., and Angelo, P. C., “Age hardening behaviour of Al-Si-Mg alloy matrix/zircon and alumina hybrid composite”, Journal of Scientific and Industrial Research, vol. 75, no. 4, pp. 89-94, 2016.[Abstract]


In the present study Al-Si-Mg alloy matrix/hybrid composite reinforced with zircon and alumina particles were produced by stir casting technique. The composites were synthesized with varying wt % of zircon and alumina particles, limiting the total wt % to 15. Cast samples were solution treated at a temperature of 540ºC for 3 hours in an electrical resistance furnace. The aging behaviour of age hardenable Al-Si-Mg alloy and the composites were examined by optical microscopy and X-ray diffraction (XRD). Microhardness measurement was carried out on both the unreinforced alloy and as well as the composites. The addition of reinforcement particles was found to accelerate the aging response of the composites by reducing the time to attain the peak hardness.

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2016

T. Satish Kumar, Subramanian, R., Shalini, S., Anburaj, J., and Angelo, P. C., “Synthesis, microstructure and mechanical properties of Al-Si-Mg alloy hybrid (zircon+ alumina) composite”, Indian Journal of Engineering & Materials Sciences, vol. 23, pp. 20-26, 2016.[Abstract]


In the present work, a detailed study of zircon and alumina reinforcement in to the matrix of Al-Si-Mg alloy on the microstructure and wear behavior has been carried out. To study the effect of reinforcement on the wear behaviour of these composites, the alloy is reinforced with different amounts of zircon and alumina particles limiting to the total 15 wt%. The microstructure of these hybrid composites reveal uniform distribution of the reinforced particles. Composites are found to exhibit better hardness and wear resistance compared to base alloy. Among the different composites, the one reinforced with 3.75 wt% of zircon and 11.25 wt% of alumina particles (composite B) is found to be the best combination exhibiting high hardness and low wear rate at a test load of 15 N. SEM analysis of worn surface of hybrid composites shows no evidence of plastic deformation of matrix phase. Abrasive wear mechanism and particle pull out is the common feature observed from all the composites.

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2016

S. Shalini, Balasundaraprabhu, R., T. Satish Kumar, Prabavathy, N., Senthilarasu, S., and Prasanna, S., “Status and outlook of sensitizers/dyes used in dye sensitized solar cells (DSSC): a review”, International Journal of Energy Research, vol. 40, pp. 1303–1320, 2016.[Abstract]


Dye‐sensitized solar cells (DSSCs) have become a topic of significant research in the last two decades because of their scientific importance in the area of energy conversion. Currently, DSSC is using inorganic ruthenium (Ru)‐based, metal‐free organic dyes, quantum‐dot sensitizer, perovskite‐based sensitizer, and natural dyes as sensitizer. The use of metal‐free, quantum‐dot sensitizer, perovskite‐based sensitizer, and natural dyes has become a viable alternative to expensive and rare Ru‐based dyes because of low cost, ease of preparation, easy attainability, and environmental friendliness. Most of the alternatives to Ru‐based dyes have so far proved inferior to the Ru‐based dyes because of their narrow absorption bands (Δλ ≈ 100–250 nm), adverse dye aggregation, and instability. This review highlights the recent research on sensitizers for DSSC, including ruthenium complexes, metal‐free organic dyes, quantum‐dot sensitizer, perovskite‐based sensitizer, mordant dyes, and natural dyes. It also details and tabulates all types of sensitizer with their corresponding efficiencies. Plot of progress in efficiency (η) of DSSC till date based on different types of sensitizers is also presented. Copyright © 2016 John Wiley & Sons, Ltd. Copyright © 2016 John Wiley & Sons, Ltd.

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2015

T. Satish Kumar, Ramanathan, S., and Sundarrajan, S., “Synthesis, microstructural and mechanical properties of ex situ zircon particles (ZrSiO4) reinforced metal matrix composites (MMCs): A review”, Journal of Materials Research and Technology, vol. 4, pp. 333–347, 2015.[Abstract]


Metal Matrix Composites (MMCs) are playing an increasingly important role in engineering applications and are in the forefront of significant research today because of their scientific and technological advantages. Particle or discontinuously reinforced MMCs are relatively inexpensive and are found to possess isotropic properties compared to fiber reinforced MMCs. Among the various types of particulate reinforcements such as boron, silicon nitride, boron nitride, silicon carbide, titanium carbide and alumina, extensive research has been directed toward the development of zircon particle reinforcement. Zircon reinforced composites are preferred as these composites exhibit relatively high refractoriness, excellent resistance to abrasion, thermal shock and chemical attack compared to composites reinforced with many other reinforcements.

This review article details the current development on the synthesis, microstructure and mechanical properties of zircon reinforced MMCs, with specific attention on the abrasive wear behavior of the composites. This review also summarizes the work done by various research groups on zircon reinforced MMCs in achieving higher hardness and wear resistance in these composites.

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2015

T. Satish Kumar, Subramanian, R., Shalini, S., and Angelo, P. C., “Microstructure, mechanical properties and corrosion behaviour of Al–Si–Mg alloy matrix/zircon and alumina hybrid composite”, Forschung im Ingenieurwesen, vol. 79, pp. 123–130, 2015.[Abstract]


In the present study, the effect of reinforcement on microstructure, mechanical properties and corrosion behaviour of aluminium–silicon–magnesium (Al–Si–Mg) alloy matrix hybrid composites reinforced with varying amounts of zircon and alumina has been investigated. Hardness and room temperature compressive tests were performed on Al–Si–Mg alloy as well as composites. Hardness and compressive strength was found to be higher for composites containing 3.75 % ZrSiO4 + 11.25 % Al2O3. Similarly, Al–Si–Mg alloy and its composites were studied for corrosion behaviour in 1 N HCl corrosive media. The weight loss of all the composites was found to decrease with time due to the formation of passive oxide layer on the sample surface. The results obtained indicate that composites exhibit superior mechanical properties and corrosion resistance compared to unreinforced alloy.

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Publication Type: Conference Paper

Year of Publication Title

2015

J. J. Reddy, M. Chowdary, K., T. Satish Kumar, Kumar, S., Krupanidhi, S. B., and D. Ramu, V., “Development and Quality Assessment of Fish Flavored Potato Chips and Its Consumer Acceptance.”, 2015.[Abstract]


Present study was conducted to develop fish flavored potato chips and finding out the effect of Labeo rohita fish powder on it. Fish was filtered and pressed using a hand extruder removed excess water from the steam cooked product and treated with ethanol at 70 - 80°C. Further the fish powder was dried and packed in LDPE pouches. Biochemical and mineral assessment of the edible fish powder found to be possessing excellent protein, lipid and essential mineral contents. The result of organoleptic test was adjudged to be the best by the panelists using 1-9 hedonic scale and ranked as “like very much” securing score 8.0 which containing fish power.

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2015

T. Satish Kumar, R., S., S., S., and P.C., A., “Effect of zircon particle size on age hardening behavior of A356 alloy based composites”, in NMD ATM 2015-New Horizons in Materials Processing and Applications, IIM-Coimbatore Chapter, PSG College of Technology, Coimbatore, 2015.

2015

Mkumar R., V., U., A., G., and T. Satish Kumar, “Synthesis and aging characteristics of A356 composite”, in National Symposium on Advances in Materials and Processing-NSAMP , PSG College of Technology, Coimbatore, 2015.

2014

T. Satish Kumar, Subramania, R., S., S., J., A., and PC, A., “Synthesis, microstructure and mechanical properties of Al-Si-Mg alloy hybrid (zircon+alumina) composite”, in International Conference on Sustainable Energy Technologies (ICSET-2014) , PSG College of Technology, Coimbatore, 2014.

Conferences Organized

  • One day National level Conference on “Processing and Characterization of Materials - NCPC 2018” on May 11, 2018.
  • One day National level Conference on “Advances in Materials Characterisation- NCAMC 2016” on May 20, 2016.
  • One day National level Symposium on “Advances in Materials and Processing- NSAMP 2015” on May 8, 2015.
  • National Metallurgists’ Day (NMD) program, for four days from November 13-16, 2015.
  • Two days National level Conference on “Quality Control in Metallurgical Industries - NCQC 2013” on February 1-2, 2013.
  • One day National level Conference on “Metallurgy and Materials Engineering - CMET 2011” on April 29, 2011.

Industrial Testing & Consultancy

Title of Consultancy Work Company
Failure Analysis of a Shaft Bull Agro Implements, Coimbatore.
Microstructure Analysis and Hardness Survey Elgi Equipments Ltd, Coimbatore.
Microstructure Analysis and Mechanical Properties Study Suriya Machines, Coimbatore.
Roots Cast Private Ltd., Coimbatore.
BULL Machines Private Ltd,Coimbatore.
Alutech Foundry India (P) Ltd, Coimbatore.
Bimetal Bearings Limited, Coimbatore.
XRD Analysis and Mechanical Properties Study A Tech Automation PVT. LTD, Chennai
Microstructure Analysis and Mechanical Properties Study Pump Part Kongu Engineers, Coimbatore.
Flow Link Systems, Coimbatore.