摘要
基于COMSOL Multiphysics软件,利用有限元法建立了脉冲涡流检测铁磁性试件厚度的仿真模型,通过改变试件厚度参数进行仿真试验,得到了不同厚度所对应的检测电压信号。最后,分别以差分电压信号峰值、差分电压信号峰值时间及单对数坐标系下晚期信号斜率为特征量进行了壁厚反演,比较了3种特征量反演壁厚的范围和特点。
Based on the COMSOL Multiphysics software,the simulation model of the thickness of the ferromagnetic test piece for pulsed eddy current testing was established by using the finite element method.Then the thickness of the tested piece was changed to simulate the experiment,and the detection voltage signals corresponding to different thicknesses were obtained.Finally,the wall thickness inversion is realized by the peak value of the differential voltage signal,the peak time of the differential voltage signal and the slope of the late signal in the single logarithmic coordinate system.The range and characteristics of the wall thickness of the three feature quantities are compared.
作者
王安泉
陈健飞
杨勇
韩庆
宫昊
闫泰松
WANG Anquan;CHEN Jianfei;YANG Yong;HAN Qing;GONG Hao;YAN Taisong(Technical Testing Center of Shengli Oilfield Branch of China Petroleum&Chemical Corporation,Dongying 257000,China;Shengli Oilfield Testing and Evaluation Research Co.,Ltd»Dongying 257000,China)
出处
《无损检测》
2020年第11期38-41,共4页
Nondestructive Testing
基金
国家重点研发计划资助项目(2016YFC0802302)。
关键词
脉冲涡流
铁磁性材料
测厚
有限元仿真
特征量提取
pulsed eddy current
ferromagnetic material
thickness measurement
finite element simulation
feature extraction
作者简介
王安泉(1979-),男,高级工程师,主要从事设备的无损检测工作;通信作者:王安泉,10257217@qq.com。
