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Theses

Effets conjoints du vieillissement, de la maintenance et de l'hétérogénéité sur des systèmes réparables : modélisation, inférence et prise de décision

Abstract : This thesis deals with reliability issues in connection with the modelling of the failure and maintenance process of repairable systems, using recurrent events. Generic virtual age models are extended by adding time-dependent covariates. These covariates take into account the observed heterogeneity between systems that are otherwise identical and independent. They can bring crucial information on the systems degradation level. We allow to use these models through two data simulation methods, as well as a parametric estimation procedure. This inferential method is numerically assessed in a thorough quality of estimation study. Then, the models are used to optimise the preventive maintenance dates along the systems’ life according to the information brought by the covariates and the past repairs, allowing to reduce the maintenance costs. We go further by offering to optimise the inspections dates of the dynamic covariates. Finally, we study the implementation of multi-systems goodness-of-fit tests.
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https://tel.archives-ouvertes.fr/tel-03295882
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Submitted on : Thursday, July 22, 2021 - 1:38:19 PM
Last modification on : Friday, May 6, 2022 - 2:14:02 PM
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  • HAL Id : tel-03295882, version 1

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Léa Brenière. Effets conjoints du vieillissement, de la maintenance et de l'hétérogénéité sur des systèmes réparables : modélisation, inférence et prise de décision. Statistiques [math.ST]. Université Grenoble Alpes [2020-..], 2021. Français. ⟨NNT : 2021GRALM008⟩. ⟨tel-03295882⟩

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