Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Evaluation of Non Destructive Inspection Interval for Running Safety of Railway Axle

철도차량 안전성을 위한 주행 차축의 비파괴 검사주기 평가

  • Kwon, Seok Jin (High-Speed Railroad Systems Research Center, Korea Railroad Research Institute) ;
  • Lee, Dong Hyung (High-Speed Railroad Systems Research Center, Korea Railroad Research Institute) ;
  • Seo, Jung Won (High-Speed Railroad Systems Research Center, Korea Railroad Research Institute) ;
  • Kim, Jae Chul (High-Speed Railroad Systems Research Center, Korea Railroad Research Institute)
  • 권석진 (한국철도기술연구원 고속철도연구본부) ;
  • 이동형 (한국철도기술연구원 고속철도연구본부) ;
  • 서정원 (한국철도기술연구원 고속철도연구본부) ;
  • 김재철 (한국철도기술연구원 고속철도연구본부)
  • Received : 2014.07.22
  • Accepted : 2014.08.18
  • Published : 2014.09.01
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Abstract

Usually, railway axles are designed for infinite life based on endurance limit of the material and the axle is not fractured immediately when a surface crack initiated. The railway axles have been inspected regularly by NDT such as ultrasonic testing, magnetic testing and eddy current testing and so on. Because the axle failure is profoundly influenced by the probability of missing a fatigue crack during an NDT inspection, it is necessary to evaluate the Non Destructive Interval of railway axle. In the present paper, the Non Destructive Interval of railway axle based on fracture mechanics and finite element analysis was investigated. It was shown that the Non Destructive Interval of railway axle can be evaluated using fracture mechanics approach and extended using NDT which a crack can detect clearly.

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References

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