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: Julien Nico (ARZ_ST_ELB@compuserve.com )
Organization:Aérazur-Zodiac
Date posted: Wed Oct 20 9:53:56 US/Eastern 1999
Subject: Population sample number to perform endurance test
Message:
In order to improve reliability figure got by FMEA analysis on one of our new product, we will perform endurance tests. We have to define number of product to test in order to have an MTBF with a known uncertainty. More over, due to the component high cost, it is not possible to have a high number of tested part. Statistics define applicable rules but we have to use standard deviation of the MTBF. As it is a new component, it is not possible to use existing data. We are looking for a data base of standard deviation for component used in aeronautical or another means to minimize number of test items. Many thanks for your help.

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