A THIN SHEET FINITE-ELEMENT CRACK MODEL IN EDDY-CURRENT NDE

被引：11
|
作者：
BADICS, Z [1 ]
KOMATSU, H [1 ]
MATSUMOTO, Y [1 ]
AOKI, K [1 ]
NAKAYASU, F [1 ]
MIYA, K [1 ]
机构：
[1] UNIV TOKYO, NUCL ENGN RES LAB, BUNKYO KU, TOKYO 113, JAPAN
来源：
IEEE TRANSACTIONS ON MAGNETICS | 1994年 / 30卷 / 05期
关键词：
D O I：
10.1109/20.312588
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：
A thin sheet finite element crack model has been developed to analyze the electromagnetic interaction between probe coils and crack-type defects in eddy current NDE (Nondestructive Evaluation). The crack type irregularities are treated here as nonconducting thin sheets with negligible thickness to avoid the discretization along their width. On the crack surfaces magnetic vector potential with zero normal component and jumping electric scalar potential ensure the proper behavior of the electromagnetic field. The model can be incorporated into the finite element formulation without disrupting the primary finite element scheme. A benchmark problem has been solved, and numerical results or the crack model have been compared to experimental data.
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页码：3080 / 3083
页数：4
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