How Many Samples?

Abstract

Kirk and Fred discussing the challenge of getting samples and the conclusions that can be drawn from testing and analyzing a low number of samples

Key Points

Join Kirk and Fred as they discuss how to get the most reliability analysis out of just a few samples of a new product and the problem Fred has had with his microphone interface box he uses for podcasting.
Topics include:

• Before doing any testing, review of field failures in predecessor products and making sure those causes are eliminated.
• Planning and then carrying out a stress test to find weaknesses and compare operational limits.
• Monitoring the parametric shifts of the outputs during the HALT evaluation can also give insight into the manufacturing consistency

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 553 How Many Samples?Kirk Gray

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Show Notes

Here is a link to Kirk’s book co-authored with John J. Paschkewitz available from Amazon “Next Generation HALT and HASS: Robust Design of Electronics and Systems”

Here is the link to the US ARMY/CALCE PAPER presented at the 2013 RAMS conference event mentioned in this podcast– “Reliability Prediction – A Continued Reliance on a Misleading Approach” . This is a government document that is in the public domain and should be distributed a read by any engineer that believes failure prediction methodology is useful or beneficial during product development.