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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: Mats C
Date posted: Thu Aug 12 10:53:30 US/Eastern 2004
Subject: reliability prediction software market
Message:
Hi all, What softwares are on the market for prediction MTBF ?, I am only interested to use for electronics circuits with component librarys ? thanks in advance Mats


Reply:

Subject: Reliability Prediction Software
Reply Posted by: Ken
Date Posted: Thu Aug 12 14:18:52 US/Eastern 2004
Message:
Reliability prediction software tools can be found in the latest edition of the RAC Journal. There are several advertisements providing e-mail and postal addresses. Some have demos that can be downloaded from their respective sites for review. PRISM is a RAC product and its features can be reviewed from the link on RAC’s home page under Products and Services. Others I can recall readily are: Reliasys, Reliasoft, Item Software, Relex, and Isograph. A web search for “reliability engineering” will yield these and others.


Reply:

Subject: reliability prediction software market
Reply Posted by: Bob Valerius (robert.valerius@ngc.com )
Organization: Northrop-Grumman Oceanic Systems
Date Posted: Tue Aug 17 14:30:52 US/Eastern 2004
Message:
Hi I personally would recommend a hard copy of 217F, an electronic copy of Prism, and MS Excel. I find the other s/w out there to be incredibly over priced. Call me at 410-260-5247 if you need any more detail. Bob Valerius


Reply:

Paul Jaworski Subject: Reliability Prediction
Reply Posted by: (pjaworski@alionscience.com )
Organization: RAC
Date Posted: Wed Aug 18 10:35:58 US/Eastern 2004
Message:
Mats You can find a list of software tool at Software Tools Directory . Then you have 2 choices; enter MTBF in the "Search Tools for" and hit and you will get a list of software tools that do MTBF prediction, or go to \Reliability\Prediction to view a list of tools that perform predictions.


Reply:

Subject: MTBF and reliability prediction
Reply Posted by: Larry George (pstlarry@yahoo.com )
Organization: Problem Solving Tools
Date Posted: Fri Sep 3 11:40:06 US/Eastern 2004
Message:
I concur with Bob Valerius' recommendation, so I linked a free, open-source MIL-HDBK-217F Excel workbook to http://www.fieldreliability.com/MH217F1.htm. It's not competitive with commercial software, because its library is incomplete, its includes only the parts count method, and some MIL-HDBK-217 fudge factors have been implemented. I recommend "Credible Reliability Prediction" if you want to predict reliability, P[Life > t], not just MTBF, for interesting t values such as: 0, warranty, inspection and PM times, and useful life. It's available from http://www.asq-rd.org/publications.htm.


Reply:

Subject: Reliability Prediction
Reply Posted by: John M P Cloarec (bzh@ieee.org )IREG
Date Posted: Fri Sep 10 4:49:00 US/Eastern 2004
Message:
Bob and Larry, the problem with MIL HDBK 217 F is that latest notice 2 is dated from 1995, so it is out of date. If you look in the "Journal of RAC", in advertisement from RELEX, Reliasoft, Item Software, ... you can find more recent database: CNET RDF 2000, 299B, Bellcore. Still using 217 will lead to pessimistic prediction and new components cannot be find !


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