Journal of Failure Analysis and Prevention

, Volume 16, Issue 3, pp 457–466 | Cite as

Preventive Maintenance Policies for Equipment Under Condition Monitoring Based on Two Types of Failure Rate

  • Yunzhi Yao
  • Chen Meng
  • Cheng Wang
  • Saisai Jin
Technical Article---Peer-Reviewed


In this article, we deal with optimal preventive maintenance policies based on online condition monitoring. The failure rate function is important for maintenance decisions. Two concepts of failure are proposed and the computing method based on condition monitoring data is given. Both un-repairable and repairable equipment are taken into consideration. For repairable equipment, the degree of degradation and failure rate will decrease after maintenance. The result of the simulation shows that taking the two types of failure rate functions into account will make the expected cost rate less than the classical method. So we draw a conclusion that the two types of failure rate functions are advantageous in maintenance decisions.


Preventive maintenance policy Condition monitoring data Failure rate Degradation degree 


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Copyright information

© ASM International 2016

Authors and Affiliations

  1. 1.Department of Missilery EngineeringShijiazhuang Mechanical Engineering CollegeShijiazhuangChina
  2. 2.Beijing Aerospace Control CenterBeijingChina

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