The Power Law Process: A Model for the Reliability of Repairable Systems

Article

Rigdon, Steven E.; Basu, Asit P.   (1989, ASQC)   Southern Illinois University at Edwardsville; University of Missouri

Journal of Quality Technology    Vol. 21    No. 4
QICID: 5629    October 1989    pp. 251-260
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Article Abstract

The power law process, often misleadingly called the Weibull process, is a useful and simple model for describing the failure times of repairable systems. We present elementary properties of the power law process, such as point estimation of unknown parameters, confidence intervals for the parameters, and tests of hypotheses. It is shown that an appropriate transformation of the failure times can lead to a goodness-of-fit test. We also discuss some of the terminology used for repairable systems and contrast this with terminology used for nonrepairable systems.

Keywords

Reliability,Statistical methods,Poisson distribution,Repairable systems


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