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This paper presents a degradation model considering a permanent impact of the environment on the system. A two-stage environment is considered; shocks impacting the degradation rates can occur in the stressed mode. We develop methods to estimate/detect the occurrence of shocks and assess the remaining useful lifetime. The studied examples showed a good performance of the estimation/detection methods.
This paper describes the activities of the Project Group on Maintenance Modelling and Applications, set up as a joint venture between ESReDA and ESRA to gather the state of knowledge and provide the perspectives on the future in the field. The Project started in 2007; the conclusion of the activities is planned for 2010. The technical findings and recommendations will be published in a technical report...
This paper deals with a perfectly continuously monitored system which gradually and stochastically deteriorates. The system is renewed by a delayed maintenance operation, which is triggered when the measured deterioration level exceeds an alarm threshold. A mathematical model is developed to study the asymptotic behavior of the reliability function. A procedure is proposed which allows us to identify...
The results presented in this paper propose a new methodology to optimize jointly the maintenance and the monitoring performance. Realistic hypothesis on the monitoring performance are taken into account by the use of Receiver Operating Characteristic curves. From a practical point of view, this leads to a very simple optimization scheme, in which the optimal monitoring technology or structure can...
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