Reliability analysis of coherent systems subject to internal failures and external shocks

Xianzhen Huang, Sujun Jin, Xuefeng He, David He

    Research output: Contribution to journalArticle

    Abstract

    In reality, a system and its components, apart from internal failures, are often exposed to external shocks as well. Since external shocks have significant effects on the performance of the system, neglecting their effects during reliability analysis of the system leads to large prediction errors and even misleading conclusions. In this paper, we present a new method for reliability analysis of coherent systems subject to internal failures and random external shocks. The cumulative probability of failure (CPF) is used as an index to quantify the effects of random external shocks on the reliability of the components and a three-moment saddlepoint approximation approach is proposed to predict the CPF. In addition, the theory of survival signature is applied to assess the associations of the components of the system to calculate the reliability of the system efficiently. Finally, two numerical examples are utilized to demonstrate the validity and effectiveness of the proposed method.

    LanguageEnglish (US)
    Pages75-83
    Number of pages9
    JournalReliability Engineering and System Safety
    Volume181
    DOIs
    StatePublished - Jan 1 2019

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    Reliability analysis

    Keywords

    • Counting process
    • Internal failure
    • Shocks
    • Survival signature
    • System reliability

    ASJC Scopus subject areas

    • Safety, Risk, Reliability and Quality
    • Industrial and Manufacturing Engineering

    Cite this

    Reliability analysis of coherent systems subject to internal failures and external shocks. / Huang, Xianzhen; Jin, Sujun; He, Xuefeng; He, David.

    In: Reliability Engineering and System Safety, Vol. 181, 01.01.2019, p. 75-83.

    Research output: Contribution to journalArticle

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