Reliability Evaluation of Bogie Frame in Deteriorated Electric Multiple Units

초록

Rolling stock structures such as bogie frame and car body play an important role for the support of vehicle loading. In order to guarantee the performance and safety during the operation of Electric Multiple Units(EMUs), which were used for over 25 years, it is required to assess the current reliability conditions including EMU components as well as the whole system. A lot of study has been carried out for the prediction of the structural integrity of the bogie frame and car body in experimental and theoretical domains. One of the new methods being applied in recent years for rolling stock structures is a reliability-based approach. In case of fatigue life evaluation of rolling stock structures, related parameters have values with wide scatter. Therefore, to take the uncertainty of the parameters into account, a probabilistic approach is expected. The objective of this paper is to estimate the structural integrity and remaining lifetime of the bogie frame of EMUs, which were used for over 25 years.