Unit 1

Introduction: Review of statistics and probability. Quality related costs, contemporary quality engineering philosophy, Quality systems and international standards and 6 Sigma. Control charts for variables: X-bar and R charts, X-bar and S charts; Control charts for individual measurements; Exponentially Weighted Moving Average (EWMA) and Deviation (EWMD) charts.

Unit 2

Control charts for attributes: p, np, c, and u charts Interpretation of control charts. Average Run Length (ARL) Study.Multivariate quality control. Control charts for short production runs, Modified acceptance control charts. Sensitivity analysis- Process capability analysis.
Introduction to Reliability: Concepts and definition of Reliability – Reliability mathematics – failure distributions.

Unit 3

Hazard models – hazard rate function – failure density function – conditional reliability – exponential, Rayleigh, Weibull, Normal and Lognormal distributions – two-parameter exponential and three-parameter Weibull distributions – MTTF, MTBF – design life.
Reliability of simple Systems – Series and parallel configurations – Reliability improvement – redundancy – combined series and parallel systems – High level and low level redundancy – k-out of n system – standby redundancy.
Maintainability – Factors affecting maintainability of systems – Design for maintainability – MTTR – Maintenance – spare provisioning.

Course Objectives

• To introduce the principles and techniques of statistical quality control and their applications.
• To familiarize with basic concepts and techniques of reliability engineering

Course Outcomes

• CO1: Apply the knowledge of statistics and probability to attain the quality improvement in industries
• CO2: Analyze the product quality using statistical tools
• CO3: Determine the reliability and maintainability of systems

CO – PO Mapping

Textbook(s)

• Montgomery D. C. – ‘Introduction to Statistical Quality Control’ – John Wiley – 2010
• Ebeling C. – ‘An Introduction to Reliability and Maintainability Engineering’ – Tata McGraw Hill Publishing Company Ltd. – 2004

Reference(s)

• Eugene G. L. – ‘Statistical Quality Control’ – McGraw-Hill – 1996
• Srinath L. S. – ‘Concept in Reliability with an Introduction to Maintainability and Availability’ – Associated East- West – 1998
• Rao S. S. – ‘Reliability Based Design’ – McGraw Hill – 1992
• O’cconer P. D. T. – ‘Practical Reliability Engineering’ – John Wiley & Sons Ltd. – 2003

Evaluation Pattern