Int J Performability Eng ›› 2018, Vol. 14 ›› Issue (1): 186-191.doi: 10.23940/ijpe.18.01.p20.186191

• Original articles • Previous Articles    

An Advanced Replacement Model for a Two-Unit System

Xiaoyang Ma, Xiaodong Zhang, and Rui Peng   

  1. Donlinks School of Economics and Management, University of Science and Technology Beijing, China

Abstract:

This paper considers an advanced replacement model for a two-unit system. One is the key unit called unit 1 and the whole system is replaced once unit 1 fails. The system is preventively replaced in order to prevent failure of unit 1. The other unit referred to as unit 2, is cheaper and easily replaceable. Unit 2 is only replaced when it fails. However, if its failure is within a threshold of the planned preventive system replacement, the system replacement is done in advance to avoid over replacements of unit 2. A framework is proposed to jointly optimize the preventive replacement interval and the threshold for advanced replacement.


Submitted on October 1, 2017; Revised on November 7, 2017; Accepted on December 5, 2017
References: 8