Title
Optimal number of repairs before replacement for a two-unit system subject to non-homogeneous pure birth process
Abstract
We consider a discrete replacement model for a two-unit system subject to failure rate interaction and shocks. Two types of shocks occur according to a non-homogeneous pure birth process and can affect the two-unit system. Type I shock causes unit A to fail and can be rectified by a general repair, while type II shock results in a non-repairable failure and must be fixed by a replacement. Two-unit systems also exhibit failure rate interactions between the units: each failure of unit A causes some damage to unit B, while each failure of unit B causes unit A into an instantaneous failure. The occurrence of a particular type of shock is dependent on the number of shocks occurred since the last replacement. The objective of this paper is to determine the optimal number of minor failures before replacement that minimizes the expected cost rate. A numerical example is presented to illustrate application of the model.
Year
DOI
Venue
2014
10.1016/j.cie.2013.12.006
Computers & Industrial Engineering
Keywords
Field
DocType
non-homogeneous pure birth process,two-unit system,two-unit system subject,failure rate interaction,non-repairable failure,unit b,unit a,discrete replacement model,minor failure,optimal number,instantaneous failure,last replacement,type i shock
Mathematical optimization,Homogeneous,Failure rate,Engineering,Expected cost,Operations management
Journal
Volume
ISSN
Citations 
69,
0360-8352
2
PageRank 
References 
Authors
0.40
11
4
Name
Order
Citations
PageRank
Shey-huei Sheu159071.39
Tzu-hsin Liu2387.55
Zhe George Zhang342444.55
Tsan-Ming Chang420.40