Estimation of Deep Defect in Ferromagnetic Material by Low Frequency Eddy Current Method

被引：23

作者：

Lee, Kang Hyouk ^{[1
]}

Baek, Myung Ki ^{[1
]}

Park, Il Han ^{[1
]}

机构：

[1] Sungkyunkwan Univ, Sch Elect & Elect Engn, Coll Informat & Commun Engn, Suwon 440746, South Korea

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2012年 / 48卷 / 11期

关键词：

Eddy current testing; ferromagnetic materials; finite element methods; low frequency; magnetic sensor;

D O I：

10.1109/TMAG.2012.2202643

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：

This paper presents a low frequency eddy current method to estimate internal deep defects in ferromagnetic material. A magnetic system for an exciting field is designed to generate sufficient coil flux to enhance sensitivity and to make certain of signal linearity. The existence and shape of a defect can be recognized by observing the difference in variation of the equivalent impedance. Magnetic systems with various interior deep defects are numerically analyzed by finite element method and their data is compared with those of experimental systems. The measured data of the impedance variation are distinguishable enough to be used to estimate the existence and shape of defects in the steel structure.

引用

页码：3965 / 3968

页数：4

共 10 条

[1] Review of advances in quantitative eddy current nondestructive evaluation [J].

Auld, BA ;

Moulder, JC .

JOURNAL OF NONDESTRUCTIVE EVALUATION, 1999, 18 (01) :3-36

[2]

Blitz J., 1991, ELECT MAGNETIC METHO, P126

[3]

Cartz L., 1995, NONDESTRUCTIVE TESTI, P173

[4] Calculation and simulation of impedance diagrams of planar rectangular spiral coils for eddy current testing [J].

Fava, JO ;

Ruch, MC .

NDT & E INTERNATIONAL, 2006, 39 (05) :414-424

[5] Detection and measurement of surface cracks in ferromagnetic materials using eddy current testing [J].

Helifa, B ;

Oulhadj, A ;

Benbelghit, A ;

Lefkaier, IK ;

Boubenider, F ;

Boutassouna, D .

NDT & E INTERNATIONAL, 2006, 39 (05) :384-390

[6] A THEORETICAL-MODEL OF THE RESPONSE OF AN EDDY-CURRENT PROBE TO A SURFACE-BREAKING METAL FATIGUE CRACK IN A FLAT TEST-PIECE [J].

LEWIS, AM .

JOURNAL OF PHYSICS D-APPLIED PHYSICS, 1992, 25 (02) :319-326

[7] PHYSICAL MEANING OF GRAD-PHI IN EDDY-CURRENT ANALYSIS USING MAGNETIC VECTOR POTENTIALS [J].

NAKATA, T ;

TAKAHASHI, N ;

FUJIWARA, K .

IEEE TRANSACTIONS ON MAGNETICS, 1988, 24 (01) :178-181

[8] High-order frequency sensitivity for nonsinusoidal steady state analysis in linear magnetodynamics [J].

Park, IH ;

Choi, M ;

Lee, S .

IEEE TRANSACTIONS ON MAGNETICS, 1998, 34 (05) :2555-2558

[9] Nonlinear magnetic method for estimation of wall thinning in carbon steel pipe [J].

Park, Il Han ;

Chai, Jangbom ;

Kim, Young Sun ;

Baek, Myung Ki .

INTERNATIONAL JOURNAL OF APPLIED ELECTROMAGNETICS AND MECHANICS, 2011, 37 (2-3) :189-198

[10]

Slemon G.R., 1982, Electric Machines, V1st, P1

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