Forum: Reliability & Maintainability Questions and Answers

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Posted by: Thomas Urbanczyk (thomas.urbanczyk@systema-gmbh.de )
Organization:SystemA Engineering GmbH
Date posted: Wed Mar 10 3:29:23 US/Eastern 2004
Subject: Export to Excel - Import to Prism
Message:
Problem:
I've got a big assembly with lots of sub-assemblys (about 130 sub-assemblys, 800 parts in total). Now I have to change a value for most of the parts, which could be done easily with excel. Therefore I used the export function, in the next step I imported the file to excel and changed the relevant values. Problem is, the import back to PRISM doesn't work, or better said, I have to manually build up the assembly structure again. Is there any way to do it correctly?

Replies:
Export to Excel - Import to Prism
Nathan Holzhauer Fri Apr 2 11:17:23 US/Eastern 2004

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Posted by: Victor Lago
Organization:TECNOBIT
Date posted: Tue Mar 2 4:19:00 US/Eastern 2004
Subject: Item Toolkit - Memories
Message:
I have a problem with the memories size using the Item Toolkit. This application only permits memories up to 1001 bit, using MIL-HDBK-217 Notice 2. The equipment which I have to calculate the failure rate, contains memories higher than these 1001 bits.
The only idea I had was to calculate the failure rate for these chips, with the MIL-HDBK-217 Notice 2, and after adjust them taking the "Adjustment Factor". Anybody knows another way to resolve the problem. Thank you all.

Replies:
Memory Failure Rate Prediction Tools
BWD Mon Mar 15 15:19:22 US/Eastern 2004

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Posted by: Stanford Lee (stanford@serv.unityopto.com.tw )
Date posted: Mon Mar 1 1:45:04 US/Eastern 2004
Subject: LED Prediction
Message:
I have a question about how to prediction 50,000 hours power depreciation curve. I only have 1,000 hours room temperature burn-in data. Thanks.

Replies:
LED Reliability
BWD Mon Mar 15 15:00:52 US/Eastern 2004

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Posted by: Jack Neo
Organization:DSTA
Date posted: Sat Feb 28 5:27:34 US/Eastern 2004
Subject: Models for assessing MTBF of armoured vehicle Road Wheels?
Message:
What is the recommended model for wear life analysis of roadwheels of an armoured vehicles? I have collected the cumulative mileage data when the road wheels are replaced so can i use exponential model? i dont think so because road wheels has a wear out failure mode. so what mathematically model should i use and how to use it?

Replies:
Life Data Analysis
B. Dudley Wed Mar 3 14:22:06 US/Eastern 2004

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Posted by: Ana Ortiz
Date posted: Wed Feb 25 16:48:56 US/Eastern 2004
Subject: TS16949 requirements
Message:
Can you please help me out regarding this.
In TS16949 - there is a requirement of defining objetives for capability, reliability, maintainability. What is the difference between them and how can we put the target for these three? I am in the automotive industry

Replies:
Terms and Definitions
bwd Wed Mar 3 14:09:35 US/Eastern 2004

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