Modelling repairable systems with an early life under competing risks and asymmetric virtual age

Modelling repairable systems with an early life under competing risks and asymmetric virtual age

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Article ID: iaor201527461
Volume: 144
Issue: 4
Start Page Number: 215
End Page Number: 224
Publication Date: Dec 2015
Journal: Reliability Engineering and System Safety
Authors: ,
Keywords: maintenance, repair & replacement, statistics: inference
Abstract:

In this paper, complex repairable systems presenting infant failures are considered. Different maintenance activities can be carried out such as corrective maintenances and planned preventive maintenances. The maintenance process is described using the competing risks framework under imperfect maintenance. Asymmetric virtual age models are assumed to characterize the maintenance efficiency. Statistical inference procedures are developed considering whether or not the causes of failure are recorded. Properties of the model are presented along with numerical estimations and an application to real data.

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