دانلود مقاله ISI انگلیسی شماره 159232
کد مقاله سال انتشار مقاله انگلیسی ترجمه فارسی تعداد کلمات
159232 2018 13 صفحه PDF سفارش دهید 12297 کلمه
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عنوان انگلیسی
Reliability optimization for series systems under uncertain component failure rates in the design phase
منبع

Publisher : Elsevier - Science Direct (الزویر - ساینس دایرکت)

Journal : International Journal of Production Economics, Volume 196, February 2018, Pages 163-175

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چکیده انگلیسی

We develop an optimization model to determine the reliability design of critical components in a serial system. The system is under a service contract, and a penalty cost has to be paid by the OEM when the total system down time exceeds a predetermined level, which complicates the evaluation of the expected cost under a given reliability design. Furthermore, in the design phase for each critical component, all possible designs are subject to uncertain component failure rates. Considering the computational intractability of evaluating the system performance, we develop approximate evaluation methods which take the system uncertainty into account. Numerical results show that the method which includes randomness in the number of failures, failure rates and repair times leads to efficient and accurate evaluations and to close-to-optimal design decisions when used in an enumeration procedure for the optimization problem. We also show that ignoring these three types of uncertainty may result in bad design decisions.

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