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- W1980524980 abstract "In order to share maintenance set-up costs and reduce system breakdown, the group maintenance policies are widely used for complex multi-unit systems. In this paper, an optimal age-based group maintenance policy is proposed for a multi-unit series system whose components are subject to different gradual degradation phenomena. When the degradation level of a component reaches a given critical size, it is replaced by a new one and the other components undergo a preventive maintenance (PM) action; otherwise, a planned group PM is performed for the whole system at operational age T>0. The problem is to determine an optimal group maintenance time T⁎ such that the system’s average long-run maintenance cost per unit time is minimized. The explicit expression of the objective function is derived and sufficient conditions for existence and uniqueness of the optimal solution are obtained. Finally, the proposed maintenance policy is applied to a group of wind turbine bearings and the results are compared with the case without planned maintenance (i.e., reactive response) and with an individual age-based maintenance policy." @default.
- W1980524980 created "2016-06-24" @default.
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- W1980524980 date "2015-02-01" @default.
- W1980524980 modified "2023-10-08" @default.
- W1980524980 title "An optimal age-based group maintenance policy for multi-unit degrading systems" @default.
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- W1980524980 doi "https://doi.org/10.1016/j.ress.2014.09.016" @default.
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