Forum: Reliability & Maintainability Questions and Answers

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Posted by: Floyd Kreuze (floyd.kreuze@honeywell.com )
Organization:Honeywell International
Date posted: Thu Jun 20 13:05:33 US/Eastern 2002
Subject: Bending of Ceramic Chip Capacitors
Message:
Quantitative information is needed on very small C values
of ceramic chip capacitors in regard to the change in capacitance value as a function of bending of the capacitor body.

Replies:
Bending of Ceramic Chip Capacitors
Adrian Piaschyk Wed Jun 26 15:55:56 US/Eastern 2002

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Posted by: P. Kamaleshwara Rao (Kamaleshwara@yahoo.com )
Organization:Centre For Reliability
Date posted: Thu Jun 20 2:48:17 US/Eastern 2002
Subject: Accelerated Test/ Life Test/ Reliability Test
Message:
We want to test a Filter to have a life of 40 years at
50 degree celcius & 90 percent humidity. This filter is used in compressed air applications.This filter removes moisture and particulate matter from the air.This is a simple passive device. Please suggest whether Accelerated test can be conducted on this ? If so what are the accelerated conditions and how to extrapolate the data.If accelerated test is not possible can we do Reliability Demonstration test? If so hoh to go about it? Thanks in advance.

Replies:
Filter Test
B.W.Dudley Thu Jun 20 11:06:37 US/Eastern 2002

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Posted by: Jim Jones (jcjones@link.com )
Organization:L3
Date posted: Wed Jun 19 12:40:35 US/Eastern 2002
Subject: MTBF for Halogen Lamps
Message:
We are using a 12V sealed beam Halogen Lamp (PAR 46 lamp) in an application where we use 12 VAC (60 Hz) through a transformer for the filament voltage. What is the MTBF of Halogen Lamps? What effect would AC have on the MTBF?

Replies:
Halogen Lamps
B.W.Dudley Tue Jun 25 13:21:50 US/Eastern 2002

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Posted by: Chris Armetta (chris.armetta@andrew.com )
Date posted: Tue Jun 18 11:57:24 US/Eastern 2002
Subject: Markov Modeling and European Reliability
Message:
We are working with several customers from Europe that are starting to ask for some analysis that is unique. Such things as Markov Modeling, FMECA with that modeling and Accelerated life testing for determining in use MTBF. This is usually above what US companies are asking.
My question is this. Is the European standards (what are they) different that US standards (what are they) for commercial industry? I am begining to suspect that Europe and the US are diverging with regards to how we evaluate a product and required or commonly asked for reliability results.

Replies: (list all replies)
European Reliability
Ken Burgess Tue Jun 18 17:10:00 US/Eastern 2002
Markov, FMECA, etc.
Joe Dzekevich Wed Jun 19 12:09:24 US/Eastern 2002
Markov, ...
Jean-Marie CLOAREC Wed Jun 26 2:55:37 US/Eastern 2002

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Posted by: geet (geet@.com.yahoo.com )
Organization:ITS
Date posted: Mon Jun 17 2:33:53 US/Eastern 2002
Subject: reliability
Message:
can we calculate the reliability of each object.

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