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The Bending Fatigue Behavior Analysis of Rail by Bending Fatigue Test  

Sung, Deok-Yong (대원대학 철도건설과)
Park, Yong-Gul (서울산업대학교 철도전문대학원)
Go, Dong-Chun (서울산업대학교 철도전문대학원)
Lee, Si-Yong (서울산업대학교 철도전문대학원)
Min, Rak-Ki (서울산업대학교 철도전문대학원)
Publication Information
Journal of the Korean Society for Railway / v.13, no.2, 2010 , pp. 201-207 More about this Journal
Abstract
The replacement criterion of rail by accumulated passing tonnage was estimated by the bending fatigue life of rail. In order to estimate the bending fatigue life, it is basically needed to analyze bending fatigue behavior on the rail. In this study, the bending fatigue test were performed for 50kg/m and 60kg/m rails, and test specimens were distinguished by new and used rails and by the types of welded rail such as base material, thermite weld, and gas pressure weld. Also, this study analyzed the fractured surface, the position of initial crack and the bending fatigue behavior (S-N curve). Therefore, it evaluated S-N curve for welded rails according to the fracture probability. The result from this study might be used essential data in order to estimate the bending fatigue life of rail by the accumulated passing tonnage.
Keywords
Welded rail; Bending fatigue test; S-N curve; Fracture probability; Fatigue life;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
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