Abstract

Kirk and Fred discussing comments we have received throughout the history of “Speaking of Reliability”. In this podcast we discuss one of the questions “should I calculate an average MTTR or MTBF ? “. We review the reasons that calculating an average time to or between failures does little to help make more reliable systems. 

Key Points

Join Kirk and Fred as they discuss the continued reliance and belief that failure averages are not the best approach to reliability improvement and can be misleading.

Topics include:

• What are the reasons one would want to calculate averages of failures and what is it that they are trying to achieve.
• How some ignore warning signs of wear out failure due to loss of income for capital hardware (truck brakes squealing)
• How much margin, such as the point of warning (squealing brakes) to ultimate failure (loss of braking) is an unknown factor and risk.

Enjoy an episode of Speaking of Reliability. Where you can join friends as they discuss reliability topics. Join us as we discuss topics ranging from design for reliability techniques, to field data analysis approaches.

SOR 271 Should I Use TTF or TBF Calculations?Kirk Gray

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Show Notes

To read Fred’s post “Are we teaching reliability all wrong?” click on this link

For Kirk’s most popular post on Accendo Reliability,  “Why the Drain in the Bathtub Curve Matters” , click on this link

For more information about Kirk's Consulting services, please see his Accelerated Reliability Solutions website please click here

To see or purchase Kirk's new book co-authored with John Paschkewitz, Next Generation HALT and HASS: Robust Design of Electronics and Systems please click on this link.

We always appreciate your feedback and questions. Thanks for listening.