Multiple step-stress accelerated life test the tampered failure rate model

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    36 Citations (Scopus)


    Battacharyya and Soejoeti (1989) proposed the tampered failure rate model for step-stress accelerated life testing. In this note, their model is generalized from the simple (2-step) step-stress setting to the multiple (k-step, k ≥wm 2) setting. For the parametric setting where the life distribution under constant stress is Weibull, maximum likelihood estimation is investigated and the situation where the different stress levels are equispaced is looked at.

    Original languageEnglish
    Pages (from-to)295-306
    Number of pages12
    JournalCommunications in Statistics - Theory and Methods
    Issue number9
    Publication statusPublished - Jan 1 1993


    • Multiple step-stress
    • Weibull distribution
    • equispaced stresses
    • failure rate
    • maximum likelihood

    ASJC Scopus subject areas

    • Statistics and Probability


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