传感技术学报2017，Vol.30Issue(6)：820-825,6.DOI:10.3969/j.issn.1004-1699.2017.06.003
基于矩形线圈水平分量磁场分析的脉冲漏磁检测研究
Investigation of Pulsed Magnetic Flux Leakage Testing Based on Horizontal Magnetic Fieldanalysis of Rectangular Coil
摘要
Abstract
Aiming at the problem that detection of ferromagnetic material,the method of pulsed magnetic flux leak testing based on horizontal magnetic flux of rectangular coil was proposed. The finite element simulation model with rectangular coil was established on the base of the theoretical analysis of eddy current and magnetic flux leakage. The simulation resultshave showed that when the axis of rectangular coil is perpendicular to the direction of crack, the horizontal magnetic flux line deflect on the junction of iron and air. At the situation,magnetic flux leakage filed is formed. According to the results of finite element simulation,the specimen and sensors are manufactured. The ex-perimental result indicates that z direction magnetic flux is constituted with EC magnetic filedand leakage filed with-out linear relation;x direction magnetic flux has a linear relation with the depth of crack and can be a characteristic quantity on the detection of ferromagnetic material.关键词
脉冲漏磁/矩形线圈/水平分量/差分检测Key words
pulsed magnetic flux leakage/rectangular probe/horizontal magnetic field/differential detection分类
矿业与冶金引用本文复制引用
周德强,赵健,常祥,李可,盛卫锋..基于矩形线圈水平分量磁场分析的脉冲漏磁检测研究[J].传感技术学报,2017,30(6):820-825,6.基金项目
国家自然科学基金项目(51107053/ E070104) （51107053/ E070104）
中国博士后基金项目(2012M520994) （2012M520994）
