Title: A perturbation approach for the modeling of eddy current nondestructive testing problems with differential probes
Authors: Sabariego, Ruth ×
Dular, Patrick #
Issue Date: Apr-2007
Publisher: Published by the Institute of Electrical and Electronics Engineers for the Magnetics Group
Series Title: IEEE Transactions on Magnetics vol:43 issue:4 pages:1289-1292
Abstract: A perturbation technique applied to the finite ele- ment modelling 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.
ISSN: 0018-9464
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Non-KU Leuven Association publications
× corresponding author
# (joint) last author

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