Calculation and simulation of impedance diagrams of planar rectangular spiral coils for eddy current testing

被引：48

作者：

Fava, JO ^{[1
]}

Ruch, MC ^{[1
]}

机构：

[1] Comis Nacl Energia Atom, Ctr Atom Constituyentes, Nondestrict & Struct Testing Dept, RA-1650 Buenos Aires, DF, Argentina

来源：

NDT & E INTERNATIONAL | 2006年 / 39卷 / 05期

关键词：

eddy current testing; impedance diagram; rectangular planar coils; resistivity assessment;

D O I：

10.1016/j.ndteint.2005.12.002

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The knowledge of analytical expressions for the electromagnetic (EM) fields produced by the coils used in eddy current testing is an important point in the development and application of these devices. In the present work, the second order vector potential formulation is used for the calculation of the fields produced by planar rectangular spiral coils of arbitrary number of turns and finite rectangular cross-section placed on a conducting half-space. Impedance plane diagrams are calculated for different frequencies, lift-off and half-space conductivity. Tests for conductivity assessment are also simulated. The theoretical results are compared with experimental measurements. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：414 / 424

页数：11

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