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On Designing Constant-Stress Partially Accelerated Life Tests under Time-Censoring

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It is not easy to obtain more failure data from products with high quality and long life at normal (use) condition. Thus, accelerated tests are needed in this respect. This paper considers the constant stress partially accelerated life tests with type-I censoring under Weibull distribution. The maximum likelihood estimators of the model parameters are derived. Partially accelerated life tests plans are developed such that the generalized asymptotic variance of the maximum likelihood estimators of the model parameters is minimized. The plan is to specify the proportion of test units that should be allocated to run under use condition. Simulation studies are made for illustrative purposes.

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Acknowledgements

This project was supported by King Saud University, Deanship of Scientific Research, College of Science Research Center.

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Authors and Affiliations

  1. King Saud University, College of Science, Department of Statistics and Operations Research, P.O. BOX 2455, Riyadh, 11451, Saudi Arabia

    Ali A. Ismail

  2. Cairo University, Faculty of Economics & Political Science, Department of Statistics, Giza, Egypt

    Ali A. Ismail

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  1. Ali A. Ismail
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Translated from Problemy Prochnosti, No. 1, pp. 162 – 170, January – February, 2014.

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Ismail, A.A. On Designing Constant-Stress Partially Accelerated Life Tests under Time-Censoring. Strength Mater 46, 132–139 (2014). https://doi.org/10.1007/s11223-014-9524-z

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  • DOI: https://doi.org/10.1007/s11223-014-9524-z

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