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Author Country (or Countries)

Saudi Arabia.

Abstract

In this paper, failure step stress-partially accelerated life tests (FSS-PALT) are considered when the lifetime of a product follows a generalized inverted Rayleigh distribution (GIRD). Based on Type II censoring, the maximum likelihood estimates (MLEs) of model parameters are obtained. Also, the asymptotic variances and covariances matrix of the estimators is studied. The optimum proportion of test units failing at normal and accelerate condition according to a certain optimality criterion in optimum test plans are discussed. The performance of the estimators are compared through Monte Carlo simulation study. Finally, numerical examples and concluding remarks are provided.

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