Forum: Reliability & Maintainability Questions and Answers

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Posted by: Wayne
Date posted: Wed Sep 4 9:38:01 US/Eastern 2002
Subject: Maintainability Demonstration
Message:
i'm interested in the following document for reference , may i know how can i retreive it?
MAINTAINABILITY DEMONSTRATION TEST REPORT FOR THE A-10 ARMAMENT CONTROL SYSTEM ABSTRACT SYSTEM, REL. MODELS/DATA/ANALYSIS, AIRBORNE, RELIABILITY, MAINTAINABILITY, RELIABILITY DEMO, WEAPONS, PUBLICATION DATE: 28 Jan 1977 AD/LD ORDER NO: AD-D874166 LOCATION/DAN: NORM/14762-003 (For Internal Use) SPONSORING AGENCY NAME: USAF/AFLC DOCUMENT NO.: 883-TR-0039 CONTRACT NO.: F33657-73-C-0500 PERFORMING/PUBLISHING AGENCY NAME: UNKNOWN

Replies:
Maintainability Document
Bruce Dudley Wed Sep 4 10:07:21 US/Eastern 2002

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Posted by: Wayne
Date posted: Wed Sep 4 9:13:29 US/Eastern 2002
Subject: Reliability Demo
Message:
I would like to ask if we can incoporate RDGT results into Reliability Demonstraion? from my opinion i dont think so because RDGT does not tell us the demonstrated MTBF instead it tells us the instantaneous MTBF. In this case, we cannot make use of the RDGT data and continue frm there to carry out Reliability Demo right? ALthough the production unit and the prototype configuration is almost the same. Care to enlighten on this issue?
Actually what is the difference between the demonstrated MTBF based on AMSAA model and demonstrated reliability based on Mil-STD 781 on Reliability Demonstration. Are they refering to the true MTBF of the system under test?

Replies:
Growth Testing
Bruce Dudley Wed Sep 4 10:55:22 US/Eastern 2002

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Posted by: Chee Yong
Date posted: Sat Aug 31 1:29:01 US/Eastern 2002
Subject: Maintainability Demonstration Report
Message:
May i know where can i get a sample Maintainability Demonstration Report preferably related to army systems. Thanks

Replies: (list all replies)
Maintainability Demo Reports
Bruce Dudley Wed Sep 4 9:03:54 US/Eastern 2002
Request for M Demo report
Wayne Wed Sep 4 9:41:10 US/Eastern 2002

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Posted by: Johnny
Organization:Micron
Date posted: Sat Aug 31 1:08:08 US/Eastern 2002
Subject: Reliability Prediction vs Field Reliability
Message:
Why is field reliability always lower than predicted reliability? What are the various factors that contributed to that?
What does it means what a reliability model is referred to as deterministic or probabilistic? what's the difference?

Replies:
Reliability prediction vs field prediction
Jean-Marie CLOAREC Mon Sep 2 6:02:56 US/Eastern 2002

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Posted by: Ken
Date posted: Sat Aug 31 1:03:39 US/Eastern 2002
Subject: AMSAA model
Message:
If our test data fails the AMSAA model, what other model can we used for RDGT? Is it a good alternative to use the first principle of total test duration divided by the number of failures to assess the instantaneous reliability of the system under test?
What's the difference between instantaneous relaibility and demonstrated reliability?

Replies: (list all replies)
AMSAA Model
B.W.Dudley Wed Sep 4 13:10:02 US/Eastern 2002
AMSAA
Wayne Thu Sep 5 9:20:51 US/Eastern 2002

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