Forum: Reliability & Maintainability Questions and Answers

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Posted by: John Sine (john.sine@us.jdsunph.com )
Organization:JDS Uniphase
Date posted: Fri Aug 18 11:24:55 US/Eastern 2000
Subject: First Year Multiplier
Message:
Can someone explain what the first year muliplier (per Bellcore) means and does each and every device/unit need to go through the burn-in time and temperature or can this be obtained by only running a qualification sample size at a burn-in temperature for the specific duration? If so, how big must the sample size be or is that defined anywhere?

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First-Year Multiplier
Jack Farrell Wed Aug 23 9:27:23 US/Eastern 2000

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Posted by: R.RADHIKA (cfr@vsnl.com )
Organization:Centre For Reliability, Chennai, India
Date posted: Fri Aug 18 6:50:52 US/Eastern 2000
Subject: SOFTWARE RELIABILITY
Message:
Are commercial companies applying software reliability models for their products? Which model is popular. Can somebody suggest a good reference materials/book on the latest development on the various models.

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Software Reliability
Jack Farrell Wed Aug 23 8:59:57 US/Eastern 2000

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Posted by: ANIL KUMAR (cfr@vsnl.com )
Organization:Centre For Reliability, Chennai, India
Date posted: Fri Aug 18 6:41:37 US/Eastern 2000
Subject: ASQ-CRE
Message:
Are Study guides for ASQ-CRE Exam available? Please inform the sources for procurement. What are the job opportunities for an ASQ-CRE in United States?

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ASQ-CRE
Jack Farrell Wed Aug 23 8:42:00 US/Eastern 2000

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Posted by: P. K. RAO (cfr@vsnl.com )
Organization:Centre For Reliability, Chennai, India
Date posted: Fri Aug 18 6:31:30 US/Eastern 2000
Subject: RACRates
Message:

In the light of MIL STDs and HDBKs getting obsolete can somebody suggest the best HDBK/Procedure for commercial products Reliability Prediction. Thanks in advance.

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RAC RATES
Bruce Dudley Tue Aug 22 14:50:35 US/Eastern 2000

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Posted by: Kang Zhang
Date posted: Wed Aug 16 17:01:48 US/Eastern 2000
Subject: Mechanical Relay; failure mode percentages for Mechanical portions
Message:
Does someone know the percentage of breakdowns for mechnical failures of relays. i.e. something beyond just open and short? Specifically how often the contacts and reed would fail versus how often the coil itself would fail.
Thanks in advance! Kang

Replies:
Relay Failure Modes
Bruce Dudley Tue Aug 22 14:32:25 US/Eastern 2000

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