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http://dx.doi.org/10.7736/KSPE.2014.31.9.777

Evaluation of Non Destructive Inspection Interval for Running Safety of Railway Axle  

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)
Publication Information
Journal of the Korean Society for Precision Engineering / v.31, no.9, 2014 , pp. 777-782 More about this Journal
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.
Keywords
Railway Axle; Non Destructive Inspection; Safety Evaluation;
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