摘要
脉冲涡流检测中激励参数与传感器参数对检测信号影响较大,分析不同参数对检测信号的影响规律,进而优化设计可提高检测系统的性能。基于脉冲涡流检测原理,建立脉冲涡流铁磁性试件测厚试验系统,分析激励线圈匝数与线圈内径对检测信号的影响规律。试验结果表明,增大激励线圈匝数与线圈内径可提高检测信号分辨率;线圈内径与激励线圈匝数的增加可提高检测信号最小值数量级;通过增加激励线圈匝数与线圈内径可提高传感器的检测厚度范围。
In pulsed eddy current testing(PECT), the excitation parameters and sensor parameters have a great influence on the detection signal. Analyzing the influence law of different parameters on the detection signal can improve the performance of the detection system by optimizing the design. Based on the principle of pulsed eddy current testing, a test system for measuring the thickness of ferromagnetic specimen was established, and the influence of the number of turns and the inner diameter of the excitation coil on the test signal was analyzed. The test results show that increasing the number of turns and the inner diameter of the coil can improve the resolution of the detection signal. The increase of the inner diameter of the coil and the number of turns of the excitation coil can increase the order of magnitude of the minimum value of the detection signal. The detection thickness range of the sensor can be increased by increasing the number of coil turns and the inner diameter of coil.
作者
李超月
高鹏
贺柏达
王璇
牛卫飞
李菊峰
Li Chaoyue;Gao Peng;He Boda;Wang Xuan;Niu Weifei;Li Jufeng(Tianjin Special Equipment Inspection Institute,Tianjin 300192,China)
出处
《电子测量技术》
北大核心
2021年第5期6-10,共5页
Electronic Measurement Technology
基金
国家市场监督管理总局技术保障专项(2019YJ005)
天津市市场和质量监督管理委员会科技计划项目(2018-W21)
天津市科技支撑重点项目(20YFZCGX00480)资助。
关键词
脉冲涡流检测
铁磁性材料
测厚
传感器参数
pulsed eddy current testing
ferromagnetic materials
thickness measurement
sensor parameter
