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Generalization of the proportional hazards model for maintenance modelling and optimization

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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https://hal-utt.archives-ouvertes.fr/hal-02318276
Contributor : Jean-Baptiste Vu Van <>
Submitted on : Wednesday, October 16, 2019 - 6:20:46 PM
Last modification on : Thursday, October 17, 2019 - 1:27:39 AM

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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, SAGE Publications, 2012, 226 (5), pp.439-447. ⟨10.1177/1748006X12448149⟩. ⟨hal-02318276⟩

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