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Optimization of joint maintenance strategy for safety‐critical systems with different reliability degrees
Author(s) -
Jia Xujie,
Cui Lirong
Publication year - 2011
Publication title -
expert systems
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.365
H-Index - 38
eISSN - 1468-0394
pISSN - 0266-4720
DOI - 10.1111/j.1468-0394.2011.00579.x
Subject(s) - computer science , reliability engineering , reliability (semiconductor) , component (thermodynamics) , joint (building) , system safety , structural engineering , engineering , quantum mechanics , thermodynamics , power (physics) , physics
In safety‐critical systems, components with high reliability are required. Once a component's reliability fails to meet the minimum safety requirements, either the component should be replaced or, transferred to another system which is allowed to operate on a lower reliability level. Safety standards are not only related to the cost of maintenance, but also to the system's (wear‐and‐tear) and repair degrees. In this paper, two different repair degrees are discussed, and the best safety virtual age criterion is studied in order to minimize financial cost. These results are supported by numerical examples.