脉冲涡流阵列探头与铝合金缺陷定量检测  

Pulsed Eddy Current Array Probe and Quantitative Detection of Aluminum Alloy Defects

作　　者：郭庆[1] 张洪波 胡鸿志 胡严太 安晟佳 GUO Qing;ZHANG Hong-bo;HU Hong-zhi;HU Yan-tai;AN Sheng-jia(College of Electrical Engineering and Automatic, Guilin University of Electronic Technology, Guilin 541004, China;Key Laboratory of Guangxi Automatic Detection and Instrumentation, Guilin 541004, China)

机构地区：[1]桂林电子科技大学电子工程与自动化学院,桂林541004 [2]广西自动检测技术与仪器重点实验室,桂林541004

出　　处：《科学技术与工程》2022年第2期593-599,共7页Science Technology and Engineering

基　　金：广西自动检测技术与仪器重点实验室主任基金(YQ17116);广西自然科学基金(2018GXNSFAA294071);桂林电子科技大学研究生教育创新计划(2021YCXS138)。

摘　　要：针对航空铝合金试件体积较大的问题,建立了阵列式脉冲涡流探头有限元仿真模型,根据脉冲涡流趋肤效应及能量分布原理,设计了MAX038仿真模型产生激励信号并加载于阵列线圈上,通过优化线圈参数实现了试件缺陷的定量检测。结果表明,仿真模型激励信号加载于线圈上生成的磁场分布,与模拟激励相似但更接近实际情况。优化后的线圈提高了缺陷识别灵敏度和分辨率,在缺陷检测中表面缺陷宽度与特征信号峰值成正比,缺陷深度与特征信号峰值成指数关系。Aiming at the problem of large volume of aviation aluminum alloy specimen,the finite element simulation model of array pulsed eddy current probe was established.According to the skin effect and the energy distribution principle of pulsed eddy current,the MAX038 simulation model was designed,and the excitation signal was generated and loaded on the array coil.By optimizing the coil parameters,the quantitative detection of sample defects was realized.The results show that the magnetic field distribution generated by the excitation signal of the simulation model loaded on the coil is similar to the simulation excitation,but closer to the actual situation.The optimized coil improves the sensitivity and resolution of defect recognition.In defect detection,the width of surface defect is directly proportional to the peak value of characteristic signal,and the depth of defect is exponentially related to the peak value of characteristic signal.

关 键 词：阵列式脉冲涡流探头 缺陷定量检测 优化线圈参数 MAX038仿真模型 

分 类 号：TP206.3[自动化与计算机技术—检测技术与自动化装置]