Forum: Reliability & Maintainability Questions and Answers

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Posted by: Al Ross (alross@patriot.net )
Organization:Ultra Electronics
Date posted: Fri Apr 12 11:47:16 US/Eastern 2002
Subject: Vibration Data
Message:
I am looking for any data that might be available regarding avionics and mechanical systems failure rates as a function of aircraft vibration. Any suggestions would be highly appreciated.

Replies:
Avionic Stress Failures
B.W.Dudley Tue Apr 23 14:54:43 US/Eastern 2002

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Posted by: Lanna Parkinson (lac315@hotmail.com )
Date posted: Wed Apr 10 17:03:29 US/Eastern 2002
Subject: Request information on commercial software
Message:
I am thinking of purchasing a commercial reliability software used in Transportaion area. I would appreciate if someone have used one before (such as Item, Isograph and Relex)and can share his advice to me.

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Posted by: Ricardo DiScioscia (ricardo.discioscia@honeywell.com )
Organization:Honeywell
Date posted: Wed Apr 10 15:09:27 US/Eastern 2002
Subject: Power Cycling and Reliability
Message:
I am trying to determine where and why 1 power cycle is equal to 1 hour of operation. Is there a method of adjusting the a devices failure rate for a specific power cycle that is equal to less than 1 hour of operation?

Replies:
Converting the reliability age scale
Larry George Sat Apr 13 15:19:58 US/Eastern 2002

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Posted by: Stephen Deneca (steve.deneca@honeywell.com )
Organization:Honeywell Aerospace
Date posted: Tue Apr 9 16:03:22 US/Eastern 2002
Subject: Field MTBF
Message:
I am a member of a team that is trying to find a way to calculate MTBF for products in the field. We know that our Repair stations only see about 5% of the total repairs done to our product and the rest are private repair stations that do not report back to us. We are tied into ACAS from which we can get our total number of units and total flight hours for all of our products in the field. Does anyone have any suggestions as to how we can relate the two pieces of information together?

Replies:
field MTBF
Klaus Denkmayr Mon Apr 15 10:33:22 US/Eastern 2002

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Posted by: Marina Karyagina (marina.karyagina@worley.com.au )
Date posted: Thu Apr 4 22:22:24 US/Eastern 2002
Subject: fibre optic
Message:
Does anyone have any information on failure rates and failure modes of fibre optic cables, particularly, in subsea environment?
Thank you.

Replies:
Fiberoptic reliability
David Dylis Mon Apr 15 11:16:37 US/Eastern 2002

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