M型电磁传感器检测裂纹的仿真分析及参数优化

左宪章， 钱苏敏， 张  云， 常  东
（军械工程学院无人机工程系，河北 石家庄 050003）
摘  要：传统的脉冲涡流传感器采用圆柱式结构，其磁场大部分在空气中传播，造成能量的损失，因此该文设计M型电磁传感器在单线圈传感器上增加一个U型磁轭来提高磁场的利用率。通过ANSYS仿真软件对M型传感器与单线圈传感器检测不同深度的裂纹进行仿真对比，结果证明M型传感器的灵敏度高，信号强，同时对于传感器激励源参数进行优化。
关键词：脉冲涡流；M型传感器；裂纹检测；参数优化
中图分类号：TP212；TP391.9；TH878；TG115.28       文献标志码：A      文章编号：1674-5124（2013）03-0065-05
Simulation analysis and parametric optimization of M-type pulsed eddy current
sensors to detect cracks
ZUO Xian-zhang， QIAN Su-min， ZHANG Yun， CHANG Dong
（Department of UAV Engineering，Ordnance Engineering College，Shijiazhuang 050003，China）
Abstract: The single-coil sensor was used as the traditional pulsed eddy current sensor， but the magnetic field mostly spreads in the air， resulting in the loss of energy. So a M-type electromagnetic sensor is proposed. The M-type sensor is made of a single-coil and a U-shaped yoke which improved the utilization of the magnetic field. Based on ANSYS simulation， a comparison of the M-type sensor is carried out with the single-coil sensor in detecting the different depths of cracks. The simulation proves the effectiveness of the M-type sensor and the sensor excitation source parameters are optimized at the same time.
Key words: pulsed eddy current； M-type sensor； cracks detection； parametric optimization