RESEARCH PAPERS: Medical Devices and Sporting Equipment

Reliability and Optimal Replacement via Coefficient of Variation

[+] Author and Article Information
S. M. Pandit, A. K. Shiekh

Dept. of Mechanical Engineering-Engineering Mechanics, Michigan Technological University, Houghton, Mich. 49931

J. Mech. Des 102(4), 761-768 (Oct 01, 1980) (8 pages) doi:10.1115/1.3254819 History: Received November 01, 1979; Online November 17, 2009


The paper presents an approach to obtaining reliability and optimal replacement policies at different operating conditions, based on limited data at one operating condition. Guidelines for the choice of a distribution based on the behavior of sample functions of deterioration processes such as wear and fatigue are provided. The importance of the coefficient of variation is delineated to show how it provides a dimensionless format of the distributions and optimal replacement strategies. Simple graphical solutions of the otherwise complicated optimal replacement equations are illustrated by numerical examples based on experimental data in diverse forms from the areas of cutting tools and fatigue failures.

Copyright © 1980 by ASME
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