Forum Questions and Answers
Topic: PRISM Questions and Answers
Topic Posted by: SRC (src_forum@alionscience.com )
Organization: SRC
Date Posted: Wed Jan 12 8:33:33 US/Eastern 2000
Topic Description: Welcome to the PRISM forum! Please feel free to post your questions and comments about the PRISM assessment software here.

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Original Message:
Posted by: Boutbien Laurent (laurent.boutbien@mbda.fr )
Organization:MBDAM (Châtillon France)
Date posted: Wed Feb 27 10:21:13 US/Eastern 2002
Subject: similarity between software and paper guide
Message:
Using your own example for a system analysis, i was focusing on the study concerning the reliability calculation for the four resistance R1-R4 of A3A2 sub-assembly. The aim of this study was to identify the relation between the software and the tabulated figures within the paper guide. Keeping the original parameters (i.e element temperature calculation is based on ambient temperature and default temperature rise), I was not able to check the default tabulated parameter for the following factors : PiTO , PiTE , Pi DT and lambdaSJ. I am aware that choosing different options for the element temperature calculation will induce different Pi-factors. However I do not understand why selecting the default option is not leading to the selection of the default parameters (these summarised in the tables : table C5 page 192 version 1.2). Can you please explain why the parameters are not corresponding to the ones expected (for ground stationary, indoors). Thank you for your help. Best Regards
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