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

摘要：

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.

关键词： railway axle crack automatic ultrasonic inspection defect analysis life prediction

作者: Hongwei Hu Xiongbing Li Xianghong Wang Yimin Shao

作者单位: College of Automobile and Mechanical Engineering, Changsha University of Science andTechnology,Chang CAD/CAM Institute, Central South University, Changsha,China

会议类型: 国际会议

会议名称: 2011 International Conference on Advanced Material Research(ICAMR 2011)(2011年先进材料研究国际会议)

会议地点: 重庆

会议语种:英文

页码: 291-296

在线出版日期: 2011-01-21（万方平台首次上网日期，不代表论文的发表时间）