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Forum: Reliability & Maintainability Questions and Answers

Topic: Reliability & Maintainability Questions and Answers

Topic Posted by: Reliability & Maintainability Forum (src_forum@alionscience.com )
Organization: System Reliability Center
Date Posted: Mon Aug 31 12:47:36 US/Eastern 1998

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Original Message:

Posted by: Ed
Date posted: Mon Jan 6 13:17:18 US/Eastern 2003
Subject: Wearout or random failure
Message:
The failure criteria of a device is 10% change in one parameter. Is it a wearout or random failure? Thanks.


Reply:

Subject: 10% Parameter Change
Reply Posted by: Joe Dzekevich (jdzekevich@ieee.org )
Organization: Raytheon RAL
Date Posted: Mon Jan 6 13:25:21 US/Eastern 2003
Message:
My take on it is: it depends. If it degrades over time, it's probably wearout. If it happens quickly, then it may be do to a failure. Rule of thumb - do not guess. Do a failure analysis. Joe


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