Fundamentals of Reliability Engineering and Applications

E. A. Elsayed

This is a three parts lecture series. The parts will cover the basics and fundamentals of reliability engineering. Part 1 begins with introduction of reliability definition and other reliability characteristics and measurements. It will be followed by reliability calculation, estimation of failure rates and understanding of the implications of failure rates on system maintenance and replacements in Part 2. Then Part 3 will cover the most important and practical failure time distributions and how to obtain the parameters of the distributions and interpretations of these parameters. Hands-on computations of the failure rates and the estimation of the failure time distribution parameters will be conducted using standard Microsoft Excel.

 Exponential and Weibull Data

 Mean Rank

 Median Rank

Excel in Weibull

Elsayed Excel in Weibull

Part 1. Reliability Definitions

1. Reliability—Time dependent characteristic
2. Failure rate
3. Mean Time to Failure
4. Availability
5. Mean residual life
Tuesday, November 30th, 2010. 11am till noon US Eastern Time
 Click here to access PowerPoint slides

Click to access video Part 1

Part 2. Reliability Calculations
1. Use of failure data
2. Density functions
3. Reliability function
4. Hazard and failure rates
Tuesday, December 7th, 2010. 11am till noon US Eastern Time
 Click here to access PowerPoint slides

 Click to access video Part 2

Part 3. Failure Time Distributions
1. Constant failure rate distributions
2. Increasing failure rate distributions
3. Decreasing failure rate distributions
4. Weibull Analysis — Why use Weibull?
Tuesday, December 14th, 2010. 11am till noon US Eastern Time
Cost: Free

Click here to access PowerPoint slides

Click here to access video part 3 

Speaker’s Bio

E. A. Elsayed is Professor II (Distinguished Professor) of the Department of Industrial and Systems Engineering, Rutgers University. He is also the Director of the NSF/ Industry/ University Co-operative Research Center for Quality and Reliability Engineering. He was the Chair of ISE, Rutgers University from 1983 to 2001. His research interests are in the areas of quality and reliability engineering and Production Planning and Control. He is a co-author of Quality Engineering in Production Systems, McGraw Hill Book Company, 1989. He is also the author of Reliability Engineering, Addison-Wesley, 1996. These two books received the 1990 and 1997 IIE Joint Publishers Book-of-the-Year Award respectively. He has received many awards and honors and was the keynote speaker of many international conferences.

Dr. Elsayed is also a co-author of Analysis and control of Production Systems, Prentice-Hall, 2nd Edition, 1994. His research has been funded by the DoD, FAA, NSF and industry. Dr. Elsayed has been a consultant for AT&T Bell Laboratories, Ingersoll-Rand, Johnson & Johnson, Personal Products, AT&T Communications, BellCore and other companies. He served as the Editor-in-Chief of the IIE Transactions and the Editor of the IIE Transactions on Quality and Reliability Engineering. Dr. Elsayed is also the Editor of the International Journal of Reliability, Quality and Safety Engineering. He serves on the editorial boards of eight journals in different capacities.

Dr. Elsayed has been involved in accelerated life testing since 1987 when he developed a reliability prediction model for the first transatlantic fiber optics cable during his sabbatical at Bell Laboratories. Since then he developed a general accelerated statistics-physics based model to predict reliability at normal operating conditions. During the last twelve years he has been extending his work to the degradation modeling area and design of accelerated life testing plans. He has verified his models by conducting extensive accelerated life testing on variety of products using the quality and reliability engineering laboratory at Rutgers.

ASQ News

Take a look at the presentations from the 2014 ASQ Technical Communities Conference.