Reliability Problem Solving

Reliability Problem Solving addresses the use of an appropriately tailored suite of reliability engineering activities, tools, methods, procedures, etc., to cost-effectively identify and correct design/process reliability problems.

Derating

July 26th, 2014

The practice of limiting electrical, thermal and mechanical stresses on parts to levels below their specified ratings is called derating. MIL-STD-721C offers the following definitions of derating:

Using an item in such a way that applied stresses are below rated values
The lowering of the rating of an item in one stress field to allow an increase…  Read More

Mission Reliability and Logistics Reliability: A Design Paradox

April 26th, 2005
The goal of improving system reliability often presents a design paradox; “mission” reliability cannot be increased without simultaneously decreasing “logistics” reliability. When faced with the challenge of a system that has inadequate reliability to meet specification requirements, hardware redundancy is often implemented, leading to   Read More

Using Accelerated Life Testing to Assess Warranty Risk

October 26th, 2002
During a recent project, a question arose about the feasibility of providing a ten year warranty for a new system. The system consisted of a proven electronic assembly and 40 newly designed hybrid electronic modules. Warranty costs could be significant if reliability risks were not fully understood. The company producing the system   Read More