Abstract
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.
| Original language | English |
|---|---|
| Pages (from-to) | 766-776 |
| Number of pages | 11 |
| Journal | Proceedings of the Institution of Mechanical Engineers, Part O: Journal of Risk and Reliability |
| Volume | 232 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 1 Dec 2018 |
Keywords
- Modeling/simulation
- component failure analysis
- condition-based maintenance
- maintenance optimization
- system failure modeling