Analysis for Optimal Rail Grinding Amount by Rolling Contact Fatigue Test in High Speed Railway

구름접촉피로시험을 통한 고속철도 레일연마량 분석

  • Received : 2011.12.13
  • Accepted : 2012.01.30
  • Published : 2012.04.30


The rail surface defects which are generated on repeated rolling contact fatigue are getting increased according to high speed, high density, and minimum weight. In addition, Increasing noise and vibration are affected by these also impact load generated as well. Because of this phenomenon, more serious and critical damages were occurred. In fact, in order to control them, the rail grinding amount in Korea. This study evaluated how depth of hardening on rail surface is formed and suggested optimal rail grinding amount by RCF(rolling contact fatigue) test with generated contact pressure between KTX wheel and UIC60 rail by applying FEM analysis. Therefore, the amount was generated approximately 0.2mm/20MGT to maintain integrity of rail surface by getting rid of depth of hardening on rail according to rail accumulated passing tonnage.


Rolling contact fatigue;Hardness;Grinding;Contact pressure


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Cited by

  1. Non-contact Local Fault Detection of Railroad Track using MFL Technology vol.14, pp.5, 2014,


Supported by : 국토해양부