Volume 43, Issue 4 (July 2015)

    On Studying Partially Accelerated Life Tests Under Progressive Stress

    (Received 22 November 2013; accepted 25 March 2014)

    Published Online: 2014

    CODEN: JTEOAD

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    Abstract

    For highly reliable products, a progressive stress accelerated life test has been proposed to obtain timely information of the product's lifetime distribution. This article considers a progressive stress partially accelerated life test model when the lifetime of a product under use condition follows Weibull distribution. It is assumed that the progressive stress is directly proportional to time. The statistical properties of the maximum likelihood (ML) estimators of the model parameters such as existence, uniqueness, and invariance are studied. The biases and mean square errors of the maximum likelihood estimators are computed to assess their performances in the presence of the stress method developed in this article through a Monte Carlo simulation study.


    Author Information:

    Ismail, Ali A.
    King Saud University, College of Science, Department of Statistics and Operations Research, Riyadh,

    Faculty of Economics & Political Science, Cairo University, Giza,

    Al-Babtain, A. A.
    King Saud University, College of Science, Department of Statistics and Operations Research, Riyadh,


    Stock #: JTE20130304

    ISSN: 0090-3973

    DOI: 10.1520/JTE20130304

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    Author
    Title On Studying Partially Accelerated Life Tests Under Progressive Stress
    Symposium , 0000-00-00
    Committee C28