Simulation and Research of Rail's Eddy Current Effect in High Speed Detection
- 作者：Ping WangSisi HaoJie LiuYunlai GaoG Y TianTheodoros Theodoulidis
- 会议时间：2013-06-01
- 关键词：Eddy current effect ; Velocity effect ; Finite element
- 作者单位：Ping Wang,Sisi Hao,Jie Liu,Yunlai Gao(College of Automation Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China)G Y Tian(College of Automation Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;School of Electrical, Electronical and Computer Engineering, Newcastle University, Ne1 7RU,_UK)Theodoros Theodoulidis(Department of Mechanical Engineering, University of Western Macedonia, Bakola and Sialvera, 50100 Kozani, Greece)
- 母体文献：2013远东无损检测新技术论坛论文集
- 会议名称：2013远东无损检测新技术论坛
- 会议地点：济南
- 主办单位：江苏省机械工程学会
- 语种：chi
摘要
In high-speed MFL detection application, the existence of speed effect causes the distortion of signals detected.According to the basic principle of speed effect in MFL detection, eddy current induced by speed is the direct factor in influencing the MFL signals, and the amplitudes are in positive proportion to speed and magnetic field intensity.Based on high-speed MFL detection method, in this paper, we built two high-speed detection models to simulate the rail defect detection at different speeds.Then we compare the waveforms of signals detected by two models at different speeds, and further analyze the influences of eddy effect on detection signals in the two models.In addition, the paper lays a foundation for future research to eliminate or utilize the eddy current in rail defect detection.