Study on High-Speed Rail Defect Detection Method Based on Combination of EC and MFL Testing

被引：0
|
作者：
Xu P. [1 ,2 ]
Geng M. [3 ,4 ]
Fang Z. [1 ]
Zhu C. [1 ]
Zeng H. [1 ]
Wang P. [2 ]
机构：
[1] College of Automation Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing
[2] Key Laboratory of Non-destructive Testing and Monitoring Technology of High-Speed Transportation Facilities of the Ministry of Industry and Information Technology, Nanjing
[3] China Railway Siyuan Survey And Design Group Co., Ltd., Wuhan
[4] Hubei Province Engineering Research Center for Rail Transit Intelligent Design & Equipment, Wuhan
来源：
| 1600年 / Chinese Mechanical Engineering Society卷 / 57期
关键词：
Defect classification; Eddy current testing; High-speed rail detection; Magnetic flux leakage testing;
D O I：
10.3901/JME.2021.18.057
中图分类号：
学科分类号：
摘要：
The detection and classification of rail surface and buried defects is of great significance to ensure the safety of railway transportation. In this paper, the classification method of surface and buried defects based on the combination of magnetic flux leakage (MFL) testing and eddy current (EC) testing is proposed. A composite electromagnetic detection probe is designed, in which the differential coil can detect EC and MFL signals simultaneously. A composite electromagnetic detection system is set up to detect high-speed rail turntable samples at 20-300 km/h. Based on the characteristics that high frequency EC signals can only detect surface defects and DC MFL can detect both surface and buried defects, the detection signals are processed and EC and MFL signals are obtained and compared. Experimental results show that this method can accurately detect and distinguish between surface and buried defects. © 2021 Journal of Mechanical Engineering.
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页码：57 / 65
页数：8
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