A1.1. Terms Related to Failure
|Termination of the ability of an item to perform its specified function. OR, non-conformance to some defined performance criteria. Failures may be classified by:||Meaningless without performance spec|
|1. Cause –||Chapter 2|
|Misuse: Caused by operation outside specified stress.|
|Primary: Not caused by an earlier failure.|
|Secondary: Caused by an earlier failure.|
|Wearout: Caused by accelerating failure rate mechanism.|
|Design: Caused by an intrinsic weakness.|
|Software: Caused by a program error despite no hardware failure||Chapter 17|
|2. Type –|
|Sudden: Not anticipated and no prior degradation.|
|Degradation: Parametric drift or ...|
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