期刊
出版社
ROYAL SOC
DOI: 10.1098/rspa.2014.0269
关键词
low-frequency scattering; spherical inclusions; eddy-currents; mode-matching; domain truncation; non-destructive testing
The low-frequency electromagnetic scattering problem of a near-surface hollow spherical inclusion is solved by means of a modal approach. The primary field is excited using a current-carrying coil. The presented solution addresses the full coupling between the two interfaces of the geometry in a rigorous way. There is a direct physical interpretation of the different occurring terms in the formal solution, which provides a deeper understanding of the underlying phenomena. The calculation is very fast, which makes the proposed model suitable for use with parametric inversion algorithms.
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