Title :
3-D Crack Detection in Anisotropic Layered Media Through a Sparseness-Regularized Solver
Author :
Oliveri, Giacomo ; Ping-Ping Ding ; Poli, Lorenzo
Author_Institution :
ELEDIA Res. Center@DISI, Univ. of Trento, Povo, Italy
Abstract :
An innovative 3-D imaging technique is proposed for the detection of cracks in anisotropic layered media. Toward this end, a fast approach to compute the 3-D method-of-moments (MoM) matrices is combined with a Bayesian Compressive Sensing solver to retrieve the unknown equivalent currents corresponding to sparse crack profiles. The proposed approach is numerically validated in a representative set of examples.
Keywords :
Bayes methods; anisotropic media; compressed sensing; crack detection; inhomogeneous media; matrix algebra; method of moments; nondestructive testing; 3D crack detection; 3D imaging technique; 3D method of moments matrix; Bayesian compressive sensing; MoM matrix; anisotropic layered media; sparseness-regularized solver; Bayes methods; Imaging; Manganese; Method of moments; Nonhomogeneous media; Signal to noise ratio; Three-dimensional displays; Anisotropic planar layered media; Bayesian compressive sampling; contrast source formulation; crack detection; inverse scattering; nondestructive evaluation (NDE); uniaxial;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2014.2365523
