Forum: Reliability & Maintainability Questions and Answers

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Posted by: Young Gu, Baek (bestguy09@korea.com )
Organization:Kwangwoon University
Date posted: Tue Oct 8 23:44:54 US/Eastern 2002
Subject: LCD Reliability Test methods and related Reference and MIL-Spec
Message:
I am post-graduated student who is studying about RAMS(Reliabiity, Availability, Maintainability, Safety).
I 'd like to know that How do I LCD(Liquid Crystal Display) test and How can I refer to the reference? thank you....

Replies:
RAMS
G.G Adegoke Wed Oct 23 5:12:58 US/Eastern 2002

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Posted by: Steven Lu (steven.lu@baesystems.com )
Organization:BAE Systems
Date posted: Mon Oct 7 17:18:56 US/Eastern 2002
Subject: Pressure Sensor MTBF
Message:
I'm working on MTBF prediction on a pressure sensor that the vendor didn't have test data to support reliability prediction. The pressure sensor is a piezoresistive pressure sensor chip attached to a ceramic substrate. The sensor has four thick film resistors laser trimed on ceramic forming a Wheatston bridge. Any help on how to calculate MTBF will be very appreciated.

Replies: (list all replies)
Thick Film Sensor Wheatstone Bridge
B.W.Dudley Tue Oct 8 14:25:19 US/Eastern 2002
MTBF
vincent Wed Oct 9 10:28:43 US/Eastern 2002

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Posted by: Larry (Larry.Yudkowitz@BAESYSTEMS.com )
Organization:BAE SYSTEMS
Date posted: Mon Oct 7 14:13:47 US/Eastern 2002
Subject: RGA or Water Vapor Content Testing
Message:
My company has always required it's suppliers of hermetically sealed active devices (used on military aircraft) to perform RGA testing on sublots of their production material.
These are devices such as RF Switch assemblies, amplifiers, filters, etc. I'm getting feedback from many of my suppliers that this should be done as a one time qualification test only and not as a periodic test. I was wondering if you have any supporting documentation to support either position. Thank you, Larry

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Posted by: mathieu (mthgsn@aol.com )
Date posted: Tue Oct 1 11:46:59 US/Eastern 2002
Subject: I seek a site where I can download NPRD 95
Message:
Hello,
I am from France and I seek a site where I can download the norme NPRD 95 (non electronique reliability data 95)please... I have soon surfing internet but it is not found now.... Help !!!

Replies: (list all replies)
NPRD-95
BWD Tue Oct 1 13:58:04 US/Eastern 2002
nprd 95
mathieu Wed Oct 2 3:18:15 US/Eastern 2002

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Posted by: Ted
Organization:Boeing Australia
Date posted: Tue Oct 1 5:22:50 US/Eastern 2002
Subject: Aging Aircraft Wiring Integrity Program
Message:
Where can I find guidelines in establishing an aging aircraft wiring integrity program. I have seen web articles that discuss the advantages of such a program, but need to find information relating to the establishment and structure.
Thank you

Replies:
Aging Systems
William H. Crowell Tue Oct 1 5:38:04 US/Eastern 2002

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