A three-dimensional inverse finite-element method applied to experimental eddy-current imaging data.
Soleimani, M. and Lionheart, W. R. B. and Peyton, A. J. and Ma, Xiandong and Higson, S. R.
(2006)
A three-dimensional inverse finite-element method applied to experimental eddy-current imaging data.
IEEE Transactions on Magnetics, 42 (5).
1560 -1567.
ISSN 0018-9464
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Abstract
Eddy-current techniques can be used to create electrical conductivity mapping of an object. The eddy-current imaging system in this paper is a magnetic induction tomography (MIT) system. MIT images the electrical conductivity of the target based on impedance measurements from pairs of excitation and detection coils. The inverse problem here is ill-posed and nonlinear. Current state-of-the-art image reconstruction methods in MIT are generally based on linear algorithms. In this paper, a regularized Gauss-Newton scheme has been implemented based on an edge finite-element forward solver and an efficient formula for the Jacobian matrix. Applications of Tikhonov and total variation regularization have been studied. Results are presented from experimental data collected from a newly developed MIT system. The paper also presents further progress in using an MIT system for molten metal flow visualization in continuous casting by applying the proposed algorithm in a real experiment in a continuous casting pilot plant of Corus RD&T, Teesside Technology Centre.
Item Type:
Journal Article
Journal or Publication Title:
IEEE Transactions on Magnetics
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Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/2500/2504
Subjects:
?? edge finite-element methodinverse problemsmagnetic induction tomographytotal variation regularizationelectronic, optical and magnetic materialselectrical and electronic engineeringtk electrical engineering. electronics nuclear engineering ??
Deposited On:
15 Dec 2010 09:19
Last Modified:
25 Oct 2024 00:01