A two-phase inspection model for a single component system with three-stage degradation

作者：Wang, Huiying; Wang, Wenbin; Peng, Rui^*

来源：Reliability Engineering & System Safety, 2017, 158: 31-40.

DOI：10.1016/j.ress.2016.10.005

• Maintenance
• Inspection
• Delay time
• Age-based replacement

This paper presents a two-phase inspection schedule and an age-based replacement policy for a single plant item contingent on a three-stage degradation process. The two phase inspection schedule can be observed in practice. The three stages are defined as the normal working stage, low-grade defective stage and critical defective stage. When an inspection detects that an item is in the low-grade defective stage, we may delay the preventive replacement action if the time to the age-based replacement is less than or equal to a threshold level. However, if it is above this threshold level, the item will be replaced immediately. If the item is found in the critical defective stage, it is replaced immediately. A hybrid bee colony algorithm is developed to find the optimal solution for the proposed model which has multiple decision variables. A numerical example is conducted to show the efficiency of this algorithm, and simulations are conducted to verify the correctness of the model.

• 出版日期2017-2
• 单位北京科技大学; 中国旅游研究院