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도시철도 장기 사용레일의 피로수명 평가

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Table 1. The prediction equation for the bending stress of rail on  ballast track (Ishida, 1990)
Fig. 4. The development of bending fatigue test-jig
Fig. 5. Example of fatigue loads
Fig. 7. The result of bending fatigue test - failure types
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