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Automatic Ultrasonic Inspection Method of Railway Axle and its Remaining Life Prediction

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Abstract:

With the high speed railway utilization, the probability of defects or fatigue cracks in railway axles is increased. An automatic ultrasonic inspection system for railway axles is presented. This system uses combined probes and inspects the defects with spiral trajectory along the axis of the axle. Through the matrix representation of C-scan image element, a defect edge extraction method is adopted, with which the defect parameters of crack are obtained automatically. Based on these defect parameters, the stress intensity factor is assessed by svm regression and the method to predict remaining life is proposed.

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Advanced Materials Research (ICAMR) View Preview

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Periodical:

Advanced Materials Research (Volume 213)

Pages:

291-296

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.213.291

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Online since:

February 2011

Authors:

Hong Wei Hu, Xiong Bing Li, Xiang Hong Wang, Yi Min Shao

Keywords:

Automatic Ultrasonic Inspection, Crack, Defect Analysis, Life Prediction, Railway Axle

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© 2011 Trans Tech Publications Ltd. All Rights Reserved

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