iRams를 이용한 도시철도 전동차의 신뢰성 분석에 관한 연구

Urban transit has grown to the principal public transportation during the past decades. In case that unexpected failures/accidents occur in urban transit, it can lead to confusion socially. Moreover, as urban transit is a complex system combined electrically and mechanically, it is necessary to perform more systematic maintenance to minimize occurrence of failures/accidents by reliability analysis. To analyze reliability of Urban Transit, this study applies iRams. After constructing bill of material and function/reliability block diagram of urban transit and its subsystem, on the basis of them, we estimate reliability of each subsystem. Finally, through result comparing estimated reliability with target reliability determined by ARINC, this study presents utility of reliability-based maintenance methodology.