传感技术学报2012，Vol.25Issue(10)：1370-1375,6.DOI:10.3969/j.issn.1004-1699.2012.010.009
基于连通磁路的脉冲远场涡流传感器设计及缺陷定量评估与分类识别
Defect Quantification and Classification Based on Design of Connected Magnetic Core Pulsed Remote Field Eddy Current Probe
摘要
Abstract
To overcome the problems of radiating of exaction magnetic field in space by the traditional pulsed remote field eddy current(PRFEC)probe,the reduction of detecting ability for big thickness pipeline and the restriction of locating position of defect. On the basis of analyzing the principle of PRFEC, the forcing magnetic field effect of the PRFEC probe with the connected magnetic core (CMC) is analyzed by the method of finite element simulation and experiment. Then, the defect quantification ability of this probe is researched, and the classification effect is analyzed when the detecting coil locates in different positions. The simulation results show that the CMC PRFEC probe focuses the magnetic field going downwards through the conducting wall, the negative peak can be extracted to classified the defect. Finally, the performances of quantifying the axial defect depth by the connected magnetic core PRFEC probe are investigated by experiment, results show that the probe can be used to quantify the defect.关键词
传感器设计/无损检测/脉冲远场涡流/定量评估/分类识别Key words
probe design/ nondestructive testing/ pulsed remote field eddy current/ defect quantification/ classification分类
矿业与冶金引用本文复制引用
张辉,杨宾峰,荆毅飞,李龙军,崔文岩..基于连通磁路的脉冲远场涡流传感器设计及缺陷定量评估与分类识别[J].传感技术学报,2012,25(10):1370-1375,6.基金项目
国家自然科学基金项目(51107149) （51107149）
陕西省自然科学基础研究计划项目(2011JQ6010) （2011JQ6010）
