On a linearized inverse scattering model for a three-dimensional flaw embedded in anisotropic advanced composite materials

Author

Barkeshli, Sina ; Radecki, Denis J. ; Sabbagh, Harold A.

Author_Institution

Sabbagh Associates Inc., Bloomington, IN, USA

Volume

30

Issue

1

fYear

1992

fDate

1/1/1992 12:00:00 AM

Firstpage

71

Lastpage

80

Abstract

A three-dimensional linearized model to reconstruct the flaw in advanced anisotropic composite materials is developed. The inversion scheme takes the form of an integral equation, which is discretized by means of the method of moments. The measured data are then inverted by means of the conjugate gradient (CG) fast Fourier transform algorithm, which incorporates Levenberg-Marquardt regularization and adaptive preconditioning schemes. The reconstruction of the flaw based on simulated as well as measured data, along with some of the salient features of the newly developed CG algorithm are presented

Keywords

composite materials; flaw detection; Levenberg-Marquardt regularization; adaptive preconditioning; anisotropic advanced composite materials; conjugate gradient algorithm; fast Fourier transform algorithm; inversion scheme; linearized inverse scattering model; method of moments; three-dimensional flaw; Anisotropic magnetoresistance; Approximation methods; Character generation; Composite materials; Conductivity; Integral equations; Inverse problems; Least squares approximation; Permittivity; Scattering;

fLanguage

English

Journal_Title

Geoscience and Remote Sensing, IEEE Transactions on

Publisher

ieee

ISSN

0196-2892

Type

jour

DOI

10.1109/36.124217

Filename

124217