Analysis of the velocity-induced eddy current in MFL type NDT

被引：71

作者：

Park, GS ^{[1
]}

Park, SH

机构：

[1] Pusan Natl Univ, Dept Elect Engn, Pusan 609735, South Korea

[2] Korea Maritime Univ, Dept Elect Engn, Pusan 606791, South Korea

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2004年 / 40卷 / 02期

关键词：

finite-element analysis; magnetic flux leakage; nondestructive testing; pipe in gas; velocity-induced eddy current;

D O I：

10.1109/TMAG.2004.824717

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In magnetic flux leakage (MFL) type nondestructive testing (NDT), there could be velocity-induced eddy currents during the sensing, which might cause the distortion of the defect signals. In this paper, the distortions of the sensing signals are analyzed by using three-dimensional finite-element analysis with velocity-induced eddy currents, and then, the compensation scheme of the signal distortion is presented to obtain the pure defect signals. The presented method has been verified by experimental measurement.

引用

页码：663 / 666

页数：4

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