Reliability Analysis for Dependent Competing Failure Processes Considering Various Maintenance Quality

This paper proposed a reliability model based on Degradation- Threshold-Shock (DTS) model considering multiple dependent failure process including internal degradation process, external shock process and maintenance process. To model the maintenance process under condition-based maintenance strategy more properly, a M-Shock process is proposed, in which the maintenance timing is dependent on the real-time condition of system and the quality of maintenance can be different with the degree of degradation regression and degradation rate change. A reliability function is finally proposed and a numerical example is also presented to illustrate the effectiveness of the model.