Time-varying importance measure of mechanical systems considering maintenance

Abstract

Purpose The purpose of this paper is to analyze the changes in its importance due to the maintenance and repair of components. Design/methodology/approach In this paper, a concept of time-varying importance measure is proposed to solve the problem of component importance change caused by maintenance. When the system is broken-down, the probability difference between the component works well after repairing and the component break down before repairing is solved, this difference is measured as an index of time-varying importance method. Then, the approach has been verified by the CNC machine tool. Findings The paper provides a method to analyze the importance of changes of components in the system due to maintenance. The time-varying importance measure can evaluate the component importance anytime during its whole life span, and it has the ability to find out the most responsible component for a system failure in the actual production process. What is more, it provides guidance for the next maintenance work. Originality/value The proposed method can guide the next maintenance time according to the change of component performance caused by each maintenance activity of the manufacturing system, and avoid the waste of resources caused by repeated maintenance.

Importance measure-based resilience management: Review, methodology and perspectives on maintenance

“…Reliability-oriented maintenance methods have improved tremendously over the past few years [61,62]. Among them, there is a lack of maintenance management research based on [39], [72], [75][76][77][78][79][80] [ 34,35], [72], [81][82][83][84][85][86][87][88] [83], [90][91][92][93][94][95] [ [96][97][98][99][100][101][102][103][104][105] [8], [107][108][109][110][111][112][113][114][115][116][117] Fig. 3 Classification of common maintenance strategies related to resilience Maintenance management in a broad sense refers to a series of activities in order to reduce the probability of failures, reduce the impact of failures, and improve th...…”

“…It's not hard to see the objective of resilience and reliability are similar in this phase [34]. In terms of the "when", time-dependent importance measures can give some guidance [82]. The Birnbaum importance measure is just the importance of a component oriented to reliability in a given time [35].…”

Integrated availability importance measure for multi-state complex systems analysis

“…Furthermore, economic factors such as maintenance cost are considered to expand the importance measure of the proposed method. Li et al 19 considered the problem of component importance change caused by maintenance and proposed a time-varying importance measure.…”

Integrated availability importance measure analysis for multi‐state manufacturing system based on proportional hazards model

“…proposed a method of repairable system importance based on failure loss for piston production lines and sorted the primary failure modes and equipment that were prone to failure. Li et al 17 . proposed the concept of time‐varying importance measure for component importance changes caused by maintenance activities of the manufacturing system.…”

“…Zhang et al 16 proposed a method of repairable system importance based on failure loss for piston production lines and sorted the primary failure modes and equipment that were prone to failure. Li et al 17 proposed the concept of time-varying importance measure for component importance changes caused by maintenance activities of the manufacturing system. Zhang et al 18 proposed a system reliability assessment method based on failure loss for the manufacturing system of job shop type and applied component importance measure (CIM) based on failure loss to equipment importance measure analysis.…”