장애분석을 통한 레일결함관리에 관한 연구

초록

Rail is one of very important parts which make up a railway system because it supports trains and guides the operation of trains. It experiences thermal stresses due to temperature changes and fatigue by the operating loads. In addition, various defects including wear, shelling and cracks occur in rails by interaction between wheel and rail. The propagation of these defects may lead to rail breaks and further to derailment accidents. Even in the case of incidents, economic losses occur through unscheduled rail replacements. Therefore, many counter measures have been taken in order to detect rail defects at early stage. In this paper, we will review the domestic management of rail defects, examine the factors affecting rail breaks through previous cases with a crack propagation scenario, and suggest improvement ways for setting rail inspection and failure management for early detection of broken rails.

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