Details
| Original language | English |
|---|---|
| Pages (from-to) | 116-125 |
| Number of pages | 10 |
| Journal | Reliability engineering & system safety |
| Volume | 150 |
| Early online date | 6 Feb 2016 |
| Publication status | Published - Jun 2016 |
Abstract
The concept of the survival signature has recently attracted increasing attention for performing reliability analysis on systems with multiple types of components. It opens a new pathway for a structured approach with high computational efficiency based on a complete probabilistic description of the system. In practical applications, however, some of the parameters of the system might not be defined completely due to limited data, which implies the need to take imprecisions of component specifications into account. This paper presents a methodology to include explicitly the imprecision, which leads to upper and lower bounds of the survival function of the system. In addition, the approach introduces novel and efficient component importance measures. By implementing relative importance index of each component without or with imprecision, the most critical component in the system can be identified depending on the service time of the system. Simulation method based on survival signature is introduced to deal with imprecision within components, which is precise and efficient. Numerical example is presented to show the applicability of the approach for systems.
Keywords
- Component importance, Imprecision, Sensitivity analysis, Survival signature, System reliability
ASJC Scopus subject areas
- Engineering(all)
- Safety, Risk, Reliability and Quality
- Engineering(all)
- Industrial and Manufacturing Engineering
Cite this
- Standard
- Harvard
- Apa
- Vancouver
- BibTeX
- RIS
In: Reliability engineering & system safety, Vol. 150, 06.2016, p. 116-125.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Imprecise system reliability and component importance based on survival signature
AU - Feng, Geng
AU - Patelli, Edoardo
AU - Beer, Michael
AU - Coolen, Frank P.A.
N1 - Funding Information: Geng Feng wishes to acknowledge the financial support of the China Scholarship Council.
PY - 2016/6
Y1 - 2016/6
N2 - The concept of the survival signature has recently attracted increasing attention for performing reliability analysis on systems with multiple types of components. It opens a new pathway for a structured approach with high computational efficiency based on a complete probabilistic description of the system. In practical applications, however, some of the parameters of the system might not be defined completely due to limited data, which implies the need to take imprecisions of component specifications into account. This paper presents a methodology to include explicitly the imprecision, which leads to upper and lower bounds of the survival function of the system. In addition, the approach introduces novel and efficient component importance measures. By implementing relative importance index of each component without or with imprecision, the most critical component in the system can be identified depending on the service time of the system. Simulation method based on survival signature is introduced to deal with imprecision within components, which is precise and efficient. Numerical example is presented to show the applicability of the approach for systems.
AB - The concept of the survival signature has recently attracted increasing attention for performing reliability analysis on systems with multiple types of components. It opens a new pathway for a structured approach with high computational efficiency based on a complete probabilistic description of the system. In practical applications, however, some of the parameters of the system might not be defined completely due to limited data, which implies the need to take imprecisions of component specifications into account. This paper presents a methodology to include explicitly the imprecision, which leads to upper and lower bounds of the survival function of the system. In addition, the approach introduces novel and efficient component importance measures. By implementing relative importance index of each component without or with imprecision, the most critical component in the system can be identified depending on the service time of the system. Simulation method based on survival signature is introduced to deal with imprecision within components, which is precise and efficient. Numerical example is presented to show the applicability of the approach for systems.
KW - Component importance
KW - Imprecision
KW - Sensitivity analysis
KW - Survival signature
KW - System reliability
UR - http://www.scopus.com/inward/record.url?scp=84958191251&partnerID=8YFLogxK
U2 - 10.1016/j.ress.2016.01.019
DO - 10.1016/j.ress.2016.01.019
M3 - Article
AN - SCOPUS:84958191251
VL - 150
SP - 116
EP - 125
JO - Reliability engineering & system safety
JF - Reliability engineering & system safety
SN - 0951-8320
ER -