上海交通大学学报（英文版） ›› 2017, Vol. 22 ›› Issue (6): 752-755.doi: 10.1007/s12204-017-1896-3
Optimal Inspection and Replacement Strategy for Systems Subject to Two Types of Failures with Adjustable Inspection Intervals
MA Xiaoyang1* (马晓洋), WANG Wenbin1,2 (王文彬), LIU Xuejuan1 (刘学娟), PENG Rui1 (彭锐)
- (1. Department of Management Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China; 2. Faculty of Business and Law, Manchester Metropolitan University, Manchester, M15 6BH, UK)
Optimal Inspection and Replacement Strategy for Systems Subject to Two Types of Failures with Adjustable Inspection Intervals
MA Xiaoyang1* (马晓洋), WANG Wenbin1,2 (王文彬), LIU Xuejuan1 (刘学娟), PENG Rui1 (彭锐)
- (1. Department of Management Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China; 2. Faculty of Business and Law, Manchester Metropolitan University, Manchester, M15 6BH, UK)
摘要： The inspection activities are often carried out to detect possible indication of failures in plant systems. This paper considers a single unit system subject to two types of failures, where one failure mode is the traditional 0-1 logic failure and the other failure mode is described by a two-stage failure process. Adjustable inspections are used to detect the defective stage of the latter. We assume that the inspection duration gets shorter and shorter with a constant ratio. At the same time, preventive replacement is used to avoid the possible failure due to the former failure mode. The renewal process of this system is analyzed and the expected long-run cost per unit time (ELRCUT) is derived. The optimal inspection period and the preventive replacement interval to minimize ELRCUT are studied. At last, a numerical example is presented to illustrate the proposed model.
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