한국정밀공학회지 (Journal of the Korean Society for Precision Engineering)

  • 제29권6호
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  • Pages.600-606
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  • 2012
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  • 1225-9071(pISSN)
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  • 2287-8769(eISSN)
한국정밀공학회 (Korean Society for Precision Engineering)
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전자기센서를 이용한 고속철도용 차륜재의 구름접촉피로 손상 모니터링

Damage Monitoring of Rolling Contact Fatigue in Wheel Specimen for High Speed Train Using Electro-Magnetic Sensor

  • 권석진 (한국철도기술연구원 고속철도연구본부) ;
  • 황지성 (한국철도기술연구원 고속철도연구본부) ;
  • 서정원 (한국철도기술연구원 고속철도연구본부) ;
  • 이진이 (조선대학교 IT-NDT연구센타)
  • Kwon, Seok-Jin (High-speed Railroad Systems Research Center, Korea Railroad Research Institute) ;
  • Hwang, Ji-Sung (High-speed Railroad Systems Research Center, Korea Railroad Research Institute) ;
  • Seo, Jung-Won (High-speed Railroad Systems Research Center, Korea Railroad Research Institute) ;
  • Lee, Jin-Yi (Chonsun University, IT-NDT Research Center)
  • 투고 : 2012.03.07
  • 심사 : 2009.04.27
  • 발행 : 2012.06.01
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초록

Upon investigation of the damaged wheels for high speed train it was determined that the damage was caused by rolling contact fatigue during operation of train. The major problems that railway vehicle system using wheel-rail has to face during operation of railway vehicle are rolling contact fatigue, cracks in wheels, cracks in rails and wheel-rail profile wear. If these deficiencies are not controlled at early stages the huge economical problems due to unexpected maintenance cost in railway vehicle can be happened. Also, If the accurate knowledge of contact conditions between wheel and rail can be evaluated, the damage of wheel can be prevented and the maintenance operation can save money. This paper presents the applicability of electro-magnetic technique to the detection and sizing of defects in wheel. Under the condition of continuous rolling contact fatigue the damage of wheel has continuously monitored using the applied sensor. It was shown that the usefulness of the applied sensor was verified by twin disc test and the measured damaged sizes showed good agreement with the damaged sizes estimated by electro-magnetic technique.

키워드

참고문헌

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