脉冲涡流检测技术新进展  

New Progress on Pulsed Eddy Current Testing Technology

作　　者：殷雪峰[1] 刘红军 崔建杰 YIN Xue-feng;LIU Hong-jun;CUI Jian-jie(SINOPEC Qingdao Refining&Chemical Co.,Ltd.,Shandong Qingdao 266000;Beijing Attention Technology Co.,Ltd.,Shandong Zibo 255000;Tianjin TEMS Technology Co.,Ltd.,Tianjin 300131,China)

机构地区：[1]中国石化青岛炼油化工有限责任公司,山东青岛266000 [2]北京安泰信科技有限公司,山东淄博255000 [3]天津特米斯科技有限公司,天津300131

出　　处：《广州化工》2020年第23期6-8,共3页GuangZhou Chemical Industry

摘　　要：脉冲涡流检测技术是涡流检测技术的一个分支。与传统的涡流检测技术不同,脉冲涡流激励信号中包含有宽频带的低频脉冲或跃变波形,从而避免了趋肤效应的影响,可以对铁磁性材料试件的远表面进行检测。本文通过比较国外、国内针对铁磁性材料脉冲涡流检测系统的技术原理,分析了脉冲涡流感应电压近似式和多涡流环耦合模型下的简化解,对理解和分析脉冲涡流技术给出了新的观点。Pulsed eddy current testing(PECT)technology is a branch of eddy current testing technology.Compares to traditional ECT,PECT inherently has a broadband of frequencies,which is advantageous for any eddy current testing technology due to the frequency-dependant skin effect.The technology principles of the existing foreign PECT systems were compared,the approximate expressions for voltage induced by PECT were analyzed,and a new viewpoint was given for the understanding and analysis of PECT.

关 键 词：脉冲涡流 铁磁性材料检测 技术分析 

分 类 号：TG115.28[金属学及工艺—物理冶金] TH878[金属学及工艺—金属学]