High-speed Detection of Surface Crack on Rail Using Alternating Current Field Measurement Technique

被引：0
|
作者：
Ge J. [1 ]
Yang C. [1 ]
Hu B. [1 ]
Wang P. [1 ]
Li W. [2 ]
Yuan X. [2 ]
Ye Y. [3 ]
机构：
[1] Nondestructive Detection and Monitoring Technology for High Speed Transportation Facilities, Key Laboratory of Ministry of Industry and Information Technology, Nanjing University of Aeronautics and Astronautics, Nanjing
[2] Center for Offshore Engineering and Safety Technology, China University of Petroleum (East China), Qingdao
[3] Nanjing Institute of Railway Technology, Nanjing
来源：
Jixie Gongcheng Xuebao/Journal of Mechanical Engineering | 2021年 / 57卷 / 18期
关键词：
High speed detection; Inclined crack; Railway; Rolling contact fatigue crack;
D O I：
10.3901/JME.2021.18.066
中图分类号：
学科分类号：
摘要：
The existence of surface cracks such as rolling contact fatigue crack will cover up the inner defect in rails. On the other hand, surface cracks trend to extend horizontally and vertically, which may lead rail rupture. To reduce the window period of detection and improve the efficiency of high-speed railway, the high-speed detection of surface cracks using ACFM (alternating current field measurement) technique is investigated in this study. Considering the liftoff and height changes between rails, the ACFM probe containing "slidable boot" is proposed. The probe arrangement is optimized through finite element analysis based on the distribution of surface cracks on rails; The influence of "slidable boot" on signals is studied. The ACFM detecting module for inspection vehicle is developed. High speed experiment and natural rolling contact fatigue crack detection experiment are carried out. The results of high-speed experiment indicate that the detection ability and sensitivity of developed module are almost same at 80 km/h and 0.72 km/h. The results of natural rolling fatigue crack experiment validate the detectability of the proposed module on natural cracks. © 2021 Journal of Mechanical Engineering.
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页码：66 / 74
页数：8
相关论文
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