- Tytuł:
- A Degradation-Threshold-Shock model for a system. The case of dependent causes of failure in finite-time
- Autorzy:
-
Caballé, N. C.
Castro, I. T. - Powiązania:
- https://bibliotekanauki.pl/articles/2069176.pdf
- Data publikacji:
- 2016
- Wydawca:
- Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
- Tematy:
-
condition-based maintenance
degradation-threshold-shock models
finite-time analysis
gamma process - Opis:
- This paper deals with a condition-based maintenance strategy (CBM) in finite-time horizon for a system subject to two different causes of failure, internal degradation and sudden shocks. Internal degradation is modelled under a gamma process and sudden shocks arrive at the system following a non-homogeneous Poisson process (NHPP). Both causes of failure are considered as dependent. When a sudden shock takes places, the system fails. In addition, the system is regarded to fail when the deterioration level reaches a critical threshold. Under this functioning scheme, a CBM strategy is developed for controlling the reliability of the system. Traditionally, this strategy is developed under an asymptotic approach. Hence, considering an infinite-time horizon is not always possible. In this paper, we analyse a CBM strategy under a finite-time horizon developing a recursive method which estimates the expected cost rate based on numerical integration and Monte Carlo simulation. A numerical example is provided in order to illustrate this complex maintenance model.
- Źródło:
-
Journal of Polish Safety and Reliability Association; 2016, 7, 1; 13--20
2084-5316 - Pojawia się w:
- Journal of Polish Safety and Reliability Association
- Dostawca treści:
- Biblioteka Nauki
Artykuł