关键词: 不完美检测, 预防性维修, 备件, 延迟时间

Abstract: In line with the fact that equipment maintenance and spare parts management affect and restrict each other, this paper proposes a joint optimization model of two-phase inspection and spare parts ordering policy considering imperfect inspections based on the delay time theory. The inspection is imperfect, and preventive renewal needs to be carried out once a defect is detected; failure renewal should be performed when the equipment is at fault. With the consideration of the states of the spare parts when the equipment is required to be renewed, the joint optimization model is established based on the renewal reward theory, in which the minimal long-run expected cost per unit time is taken as objective function to optimize the first phase inspection time, the second phase inspection interval and the spare parts ordering time. Finally, an artificial bee colony algorithm is developed to find the optimal solution. The two-phase inspection policy is compared with the periodical inspection policy in the numerical analysis and the results show that the two-phase inspection policy is always superior to the periodical inspection policy; and the effectiveness of the proposed model is verified.

Key words: imperfect inspection, preventive maintenance, spare parts, delay time