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arXiv · 1210.7915

Target Detection and Characterization from Electromagnetic Induction Data

Habib Ammari·Junqing Chen·Zhiming Chen·Josselin Garnier·Darko Volkov
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Abstract

The goal of this paper is to contribute to the field of nondestructive testing by eddy currents. We provide a mathematical analysis and a numerical framework for simulating the imaging of arbitrarily shaped small volume conductive inclusions from electromagnetic induction data. We derive, with proof, a small-volume expansion of the eddy current data measured away from the conductive inclusion. The formula involves two polarization tensors: one associated with the magnetic contrast and the second with the conductivity of the inclusion. Based on this new formula, we design a location search algorithm. We include in this paper a discussion on data sampling, noise reduction, and on probability of detection. We provide numerical examples that support our findings.

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Habib Ammari, Junqing Chen, Zhiming Chen, Josselin Garnier, Darko Volkov. 2013-03-29. Target Detection and Characterization from Electromagnetic Induction Data. https://arxiv.org/abs/1210.7915

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