期刊文献+

Condition-Based Spare Ordering Model for a Two-Stage Degrading System

原文传递
导出
摘要 Proper supply of spares is critical to guarantee safe operation,improve service quality and reduce maintenance costs.This paper proposes a condition-based spare ordering model for a two-stage degrading system,which consists of inflection point transfer process and two-stage degradation process with continuous degradation process and random external shocks.External shocks itself does not directly lead to system failure,but it will speed up the degradation process.In turn,degradation can also make the system more vulnerable to shocks.In general,the degradation rate at the defective stage is greater than that at the normal stage.The proposed model depends on system degradation process and spare lead-time.In order to achieve accurate maintenance and deal with emergency maintenance caused by system rapid degradation after inflection point transfer time,the model considers both the regular lead-time and expedited lead-time.Before inflection point transfer time,regular spare ordering policy is performed.After inflection point transfer time,expedited spare ordering policy is implemented.The decision variable of the model is the ordering time.The objective of this study is to determine the optimal ordering time such that the expected cost rate is minimized.Finally,a numerical example is presented to illustrate the proposed model and sensitivity analysis on critical parameters is carried out.
出处 《Journal of Systems Science and Systems Engineering》 SCIE EI CSCD 2020年第1期85-99,共15页 系统科学与系统工程学报(英文版)
基金 The authors are grateful to the anonymous reviewers and the editor for their critical as well as constructive review of the manuscript.This research is supported by the National Natural Science Foundation of China under Grant Nos.51575055 and 51975058 and the National Science and Technology Major Project of China under Grant No.2015ZX04001002.
  • 相关文献

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部