- Tytuł:
- Reliability modeling for dependent competing failure processes with phase-type distribution considering changing degradation rate
- Autorzy:
-
Lyu, Hao
Wang, Shuai
Zhang, Xiaowen
Yang, Zaiyou
Pecht, Michael - Powiązania:
- https://bibliotekanauki.pl/articles/2038056.pdf
- Data publikacji:
- 2021
- Wydawca:
- Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
- Tematy:
-
dependent competing failure processes
phase type distribution
changing degradation rate
reliability modeling
survival function - Opis:
- In this paper, a system reliability model subject to Dependent Competing Failure Processes (DCFP) with phase-type (PH) distribution considering changing degradation rate is proposed. When the sum of continuous degradation and sudden degradation exceeds the soft failure threshold, soft failure occurs. The interarrival time between two successive shocks and total number of shocks before hard failure occurring follow the continuous PH distribution and discrete PH distribution, respectively. The hard failure reliability is calculated using the PH distribution survival function. Due to the shock on soft failure process, the degradation rate of soft failure will increase. When the number of shocks reaches a specific value, degradation rate changes. The hard failure is calculated by the extreme shock model, cumulative shock model, and run shock model, respectively. The closed-form reliability function is derived combining with the hard and soft failure reliability model. Finally, a Micro-Electro-Mechanical System (MEMS) demonstrates the effectiveness of the proposed model.
- Źródło:
-
Eksploatacja i Niezawodność; 2021, 23, 4; 627-635
1507-2711 - Pojawia się w:
- Eksploatacja i Niezawodność
- Dostawca treści:
- Biblioteka Nauki
Artykuł