TY - JOUR
T1 - An optimal inspection and replacement policy for a two-unit system
AU - Yang, Li
AU - Zhao, Yu
AU - Ma, Xiaobing
AU - Qiu, Qingan
N1 - Publisher Copyright:
© IMechE 2018.
PY - 2018/12/1
Y1 - 2018/12/1
N2 - We study a preventive maintenance policy for a system composed of two units, a binary state unit and a three-state unit. Failures of both units are hard and self-announcing. The intermediate, defective state for the second unit can be regarded as a signal of pending failures. Unit 2 is inspected when its age attains integral multiples of interval s and when unit 1 fails, and preventive replacement is immediate once the defective state is revealed. This strategy could be extended by further providing preventive replacement for the first unit. A case study on an offshore wind turbine is presented for illustration. We find that opportunistic maintenance schemed for both units could effectively reduce the maintenance cost.
AB - We study a preventive maintenance policy for a system composed of two units, a binary state unit and a three-state unit. Failures of both units are hard and self-announcing. The intermediate, defective state for the second unit can be regarded as a signal of pending failures. Unit 2 is inspected when its age attains integral multiples of interval s and when unit 1 fails, and preventive replacement is immediate once the defective state is revealed. This strategy could be extended by further providing preventive replacement for the first unit. A case study on an offshore wind turbine is presented for illustration. We find that opportunistic maintenance schemed for both units could effectively reduce the maintenance cost.
KW - component failure analysis
KW - condition-based maintenance
KW - maintenance optimization
KW - Modeling/simulation
KW - system failure modeling
UR - https://www.scopus.com/pages/publications/85044603171
U2 - 10.1177/1748006X18761488
DO - 10.1177/1748006X18761488
M3 - 文章
AN - SCOPUS:85044603171
SN - 1748-006X
VL - 232
SP - 766
EP - 776
JO - Proceedings of the Institution of Mechanical Engineers, Part O: Journal of Risk and Reliability
JF - Proceedings of the Institution of Mechanical Engineers, Part O: Journal of Risk and Reliability
IS - 6
ER -