کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1135588 | 956104 | 2011 | 9 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: A multi-criteria optimal replacement policy for a system subject to shocks A multi-criteria optimal replacement policy for a system subject to shocks](/preview/png/1135588.png)
A system is subject to shocks that arrive according to a non-homogeneous Poisson process. As these shocks occur, the system experiences one of two types of failures: a type-I failure (minor), rectified by a minimal repair; or a type-II failure (catastrophic) that calls for a replacement. In this study, we consider a multi-criteria replacement policy based on system age, nature of failure, and entire repair-cost history. Under such a policy, the system is replaced at planned life time T, or at the nth type-I failure, or at the kth type-I failure (k < n) at which the accumulated repair cost exceeds the pre-determined limit, or at the first type-II failure, whichever occurs first. An optimal policy over the control parameters is studied analytically by showing its existence, uniqueness, and structural properties. This model is a generalization of several existing models in the literature. Some numerical examples are presented to show several useful insights.
► We analyze a multi-criteria replacement policy for a system subject to shocks.
► We show the existence and the structural properties of the optimal replacement policy.
► The policy is based on number of minimal repair and system age for a given cumulative repair cost limit L.
► The model provides a general framework for analyzing the maintenance policies.
Journal: Computers & Industrial Engineering - Volume 61, Issue 4, November 2011, Pages 1035–1043