OPTIMUM GENERALIZED COMPOUND LINEAR PLAN FOR MULTIPLE-STEP STEP-STRESS ACCELERATED LIFE TESTS

International Journal of Mathematical Modelling & Computations

مقاله 7، دوره 5، 3 (SUMMER)، فروردین 2015، صفحه 267-275   

نویسندگان

Navin Chandra؛ Mashroor Ahmad Kha

Pondicherry University India Department of Statistics

چکیده

In this paper, we consider an  i.e., multiple step-stress accelerated life testing (ALT) experiment with unequal duration of time . It is assumed that the time to failure of a product follows Rayleigh distribution with a log-linear relationship between stress and lifetime and also we assume a generalized Khamis-Higgins model for the effect of changing stress levels. Taking into account that the problem of choosing the optimal time for 3-step step-stress tests under compound linear plan was initially attempted by Khamis and Higgins [16]. We ever first have developed a generalized compound linear plan for multiple-step step-stress setting using variance-optimality criteria. Some numerical examples are discussed to illustrate the proposed procedures.
 

کلیدواژه‌ها

accelerated life testing؛ Rayleigh distribution؛ cumulative exposure model؛ maximum likelihood estimate؛ generalized compound linear plan

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