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Estimation and Demonstration Test Plan for Availability with Weibull Lifetime and Lognormal Repair Time  

Seo, Sun-Keun (Dept. of Industrial & Management Systems Engineering, Dong-A University)
Publication Information
Journal of Applied Reliability / v.14, no.1, 2014 , pp. 1-9 More about this Journal
Abstract
One important measure of performance for a repairable system is steady-state availability. In this paper, a method to estimate and establish confidence interval for the steady-state availability under Weibull lifetime and lognormal repair time distributions is proposed. Also, bias and mean squared error of a point estimator for an availability are investigated. In addition, a procedure to derive the sample size and critical value for availability demonstration test is presented and illustrated with a numerical example.
Keywords
availability demonstration test; confidence interval; lognormal repair time; steady state availability; Weibull lifetime;
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