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Journal Articles Proceedings of the Institution of Mechanical Engineers, Part O: Journal of Risk and Reliability Year : 2012

Generalization of the proportional hazards model for maintenance modelling and optimization

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Abstract

A non-observable monotonically deteriorating system is considered. The observed data are the maintenance times and the kinds of maintenance performed. The aim of this paper is to propose a model of the dependency between all kinds of maintenance by considering imperfect maintenance efficiency. Furthermore, we present an additional planned preventive maintenance policy that reduces a finite horizon average total maintenance cost. To deal with such a problem a competing risks model is considered. A general class of models, denoted generalized proportional hazards, is presented and a particular model is derived. An estimation method is detailed for the proposed model. Finally, by numerical implementation, a maintenance policy that leads to the lowest finite horizon average total maintenance cost is proposed.
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Dates and versions

hal-02318276 , version 2 (16-10-2019)
hal-02318276 , version 1 (22-05-2020)

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Estelle Deloux, Yann Dijoux, Mitra Fouladirad. Generalization of the proportional hazards model for maintenance modelling and optimization. Proceedings of the Institution of Mechanical Engineers, Part O: Journal of Risk and Reliability, 2012, 226 (5), pp.439-447. ⟨10.1177/1748006X12448149⟩. ⟨hal-02318276v2⟩
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