Forum: Reliability & Maintainability Questions and Answers
Posted by: Julien NICO (firstname.lastname@example.org )
Date posted: Thu Feb 13 4:11:02 US/Eastern 2003
We are developping a system for aircraft made of several component (electronic,mechanic, pneumatic).
One of this component (an air compressor) has an ovberhaul period. To build my system MTBF, shall i use the overhaul period or the MTBF (what can be the mtbf of an overhaul component?). If i have to use the MTBF, what is the interest of the overhaul, beacause it is sensed to extend the life of the component.
Posted by: Jim Jones (email@example.com )
Date posted: Tue Feb 11 12:53:30 US/Eastern 2003
Subject: Durability definition
I am in need of a definition of both electrical durability and mechanical durability. In what ways is the durability of an item tied to material used in the design? How does durability differ from normal wear-out?
Posted by: Perplexed
Date posted: Tue Feb 4 10:32:46 US/Eastern 2003
Subject: Failure Free Operating Period
Can anyone help me with converting a requirement for a “Failure Free Operating Period” (FFOP)into a failure rate.
Posted by: June
Date posted: Thu Jan 30 22:06:17 US/Eastern 2003
Subject: Early Failure Rate
For early failure rate. why is number of failures (fpm) corrected using 60% confidence level (using poisson statistics)?
a) Why not 90% confidence level, etc b) Why poisson (since for reliability data, it is mostly derived from Weibull, exponential distribution) http://www.philipslogic.com/quality/efr/
Posted by: Gupta (firstname.lastname@example.org )
Date posted: Wed Jan 29 10:02:08 US/Eastern 2003
Subject: Reg: HandBook
What HandBook I need to refer for Mechanical, Electro-Mechnical Failure Rate. with regards, TGK Gupta