Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6896710 | European Journal of Operational Research | 2015 | 8 Pages |
Abstract
The failure processes of repairable systems may be impacted by operational and environmental stress factors. To accommodate such factors, reliability can be modelled using a multiplicative intensity function. In the proportional intensity model, the failure intensity is the product of the failure intensity function of the baseline system that quantifies intrinsic factors and a function of covariates that quantify extrinsic factors. The existing literature has extensively studied the failure processes of repairable systems using general repair concepts such as age-reduction when no covariate effects are considered. This paper investigates different approaches for modelling the failure and repair process of repairable systems in the presence of time-dependent covariates. We derive probabilistic properties of the failure processes for such systems.
Keywords
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Physical Sciences and Engineering
Computer Science
Computer Science (General)
Authors
Shaomin Wu, Philip Scarf,