Reliability-Based Optimization for Fatigue Maintenance Planning of Freight Car

Baek, Seok Heum; Lee, Kyoung Young; Cho, Seok Swoo; Joo, Won Sik

doi:10.4028/0-87849-440-5.1369

Cited by 1 publication

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“…New inspection and repair methods are needed for their safety because freight trains require higher speed and longer running time. In the case of container and uncovered freight trains, the maintenance cost is about three times more than their manufacturing cost during their lifetime [1,2]. Therefore, it is important to establish an optimal preventive maintenance schedule to minimize the total cost with the desired or specified levels of operational safety and reliability [3][4][5].…”

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confidence: 99%

Reliability design of preventive maintenance scheduling for cumulative fatigue damage

et al. 2009

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As the cumulative running times of a locomotive truck increases, degradation such as fatigue, wear, and deterioration occur. Particularly the container train and uncovered freight train, their maintenance cost during their lifetime is three times more than the manufacturing cost. Generally, for the freight train, corrective maintenance to repair a bad part after a breakdown is not adapted; however, preventive maintenance that fixes a bad part before a breakdown is. Therefore, it is important and necessary to establish a system of optimal preventive maintenance and exact maintenance period. This study attempts to propose a preventive maintenance procedure that predicts a repair period using reliability function and instantaneous failure rate based on fatigue test and load history data. Additionally, this method is applied to the end beam of an uncovered freight train, which is the brake part, and its usefulness is examined and analyzed.

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