疲労 (2)

[I-79] Evaluation of rail fatigue characteristics under very high cycle fatigue regimes by two types of fatigue test methods

*Jun Mizutani¹, Mitsuru Hosoda¹, Ryuuichi Yamamoto¹, Yuuki Kato², Yuuki Tanaka², Noriyasu Oguma² (1. Railway Technical Research Institute, 2. University of Toyama)

Keywords:Replacement period of rail, Ultrasonic fatigue test, Rotating bendeing fatigue test, Stress gradient, Control volume