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자연과학대학
통계학전공
Journal papers
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Optimal mission abort policy for partially repairable heterogeneous systems
Title
Optimal mission abort policy for partially repairable heterogeneous systems
Authors
Cha J.H.
;
Finkelstein M.
;
Levitin G.
Ewha Authors
차지환
SCOPUS Author ID
차지환
Issue Date
2018
Journal Title
European Journal of Operational Research
ISSN
0377-2217
Citation
European Journal of Operational Research vol. 271, no. 3, pp. 818 - 825
Keywords
Maintenance
;
Minimal repair
;
Mission abort
;
Mission success probability
;
System survival probability
Publisher
Elsevier B.V.
Indexed
SCIE; SCOPUS
Document Type
Article
Abstract
To enhance survivability of many real-world critical systems (e.g., aircrafts, human space flight systems and dangerous technological processes), mission abort procedures are often utilized in practice. In such cases, in order to improve survivability, a rescue or recovery procedure is initiated. In this paper, we first develop a methodology for obtaining the mission success probability (MSP) and the system survival probability (SSP) for heterogeneous systems with major and minor failures. A major failure is non-repairable and results in a failure of a mission, whereas a minor failure is minimally repaired. We consider a policy where a mission is aborted and a rescue procedure is activated if the mth minimal repair occurs before time ξ since the start of a mission. We demonstrate the tradeoff between the SSP and the MSP that should be balanced by the proper choice of the decision variables m and ξ. A detailed illustrative example is presented. © 2018 Elsevier B.V.
DOI
10.1016/j.ejor.2018.06.032
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