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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

Abstract

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.

Keywords

Rolling contact fatigue;Hardness;Grinding;Contact pressure

References

  1. M. C. Kim (2006) The Report for Establishment of Rail Grinding Criteria, KRRI, Korail.
  2. M. Ishida (1999) Experimental study on the effect of preventive grinding on RCF defects of Shinkansen rails, IHHA'99 STS-conference, pp. 511-516.
  3. M. C. Kim, T. K. Kang (2008), Rail Grinding Criteria of Kyeong-Bu High-Speed Line for Effective Rail Maintenance, Journal of the Korean Society for Railway, 11(3), pp. 272-279.
  4. D. Y. Sung, D. C. Go, Y. G. Park, S. Y. Kong (2010) Experimental Study for Establishing Rail Grinding Period in the Urban Railway, Journal of the Korean Society for Railway, 13(4), pp. 447-454.
  5. Coenraad Esveld (2001) Modern Railway Track, MRT-Productions, pp. 23-33, pp. 71-90.
  6. H. Y. Choi, D. H. Lee, W. H. You, J. S. Lee (2010) Wheel-Rail Contact Analysis considering the Deformation of Wheel and Axle, Journal of the Korean Society of Precision Engineering, 27(8).

Cited by

  1. Non-contact Local Fault Detection of Railroad Track using MFL Technology vol.14, pp.5, 2014, https://doi.org/10.9798/KOSHAM.2014.14.5.275

Acknowledgement

Supported by : 국토해양부