Electrical conductivity measurement of ferromagnetic metallic materials using pulsed eddy current method

被引：76
|
作者：
Chen, Xingle [1 ]
Lei, Yinzhao [1 ]
机构：
[1] Beihang Univ, Sch Automat Sci & Elect Engn, Beijing 100191, Peoples R China
来源：
NDT & E INTERNATIONAL | 2015年 / 75卷
关键词：
Electrical conductivity measurement; Pulsed eddy current testing; Ferromagnetic metallic material; Parameters inversion; Electromagnetic field; POTENTIAL DROP MEASUREMENTS; PROBE-COIL; PLATES;
D O I：
10.1016/j.ndteint.2015.06.005
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Pulsed eddy current testing (PECT) method for electrical conductivity measurement of ferromagnetic metallic materials is proposed. Based on time-domain analytical solutions to the PECT model of ferromagnetic plates, the conductivity and permeability are determined via an inverse problem established with the calculated and measured values of induced voltage. PECT method for conductivity measurement is verified by the four-point probe method on three carbon steel plates. In addition, the effects of the amplitude of pulsed excitation current and the lift-off of probe coils on measurement results are studied. PECT is an innovative, non-contacting method with good repeatability for electrical conductivity measurement. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：33 / 38
页数：6
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