Optimization of maintenance strategy for multi-component system subject to degradation process

The choice of maintenance strategy is a common problem in reliability engineering, and proper maintenance strategies can improve the efficiency of maintenance and save maintenance cost to some extent. There are many papers on the selection and optimization of maintenance strategies. Most of them considered the problem from the system level, and ignored the difference between different components. In fact, the maintenance process of each component is different in many aspects, such as maintenance time and cost. Therefore, it is necessary to analyze the maintenance strategy from the perspective of components. In this paper, the multi-objective optimization model of maintenance cost rate and system availability is established under the constraint of system reliability by mathematical modeling. At the end of this paper, the practicability of the model will be verified by means of numerical analysis.