Article (Scientific journals)
A perturbation approach for the modeling of eddy current nondestructive testing problems with differential probes
V Sabariego, Ruth; Dular, Patrick
2007In IEEE Transactions on Magnetics, 43 (4 Sp. Iss. SI), p. 1289-1292
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Keywords :
eddy currents; finite element method; nondestructive testing; perturbation method
Abstract :
[en] A perturbation technique applied to the finite element modeling of eddy current nondestructive testing (ECNDT) problems is developed for taking into account differential probes. It concerns a h-conform formulation. The source term of the formulation is directly determined by the projection of the unperturbed field in a relatively small region around the defect. The voltage change due to the presence of the flaw is calculated by performing an integral over the defect and a layer of elements in the exterior domain that touch its boundary. The considered test case involves a shielded differential probe scanning the surface of a metal specimen for the detection of flaws.
Disciplines :
Electrical & electronics engineering
Physics
Author, co-author :
V Sabariego, Ruth ;  Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Applied and Computational Electromagnetics (ACE)
Dular, Patrick ;  Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Applied and Computational Electromagnetics (ACE)
Language :
English
Title :
A perturbation approach for the modeling of eddy current nondestructive testing problems with differential probes
Publication date :
April 2007
Journal title :
IEEE Transactions on Magnetics
ISSN :
0018-9464
eISSN :
1941-0069
Publisher :
Ieee-Inst Electrical Electronics Engineers Inc, Piscataway, United States - New Jersey
Volume :
43
Issue :
4 Sp. Iss. SI
Pages :
1289-1292
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 18 September 2009

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