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Mehdi Bozorgi

Mehdi Bozorgi

Academic rank: Assistant Professor
ORCID: https://orcid.org/0000-0003-0694-5390
Education: PhD.
ScopusId: 35490004500
Faculty: Engineering
Address: Arak University
Phone:

Research

Title
Backscattering From a Two Dimensional Rectangular Crack Using FIE
Type
JournalPaper
Keywords
Backscattering, Chebyshev polynomials, integral equation, rectangular crack
Year
2010
Journal IEEE T ANTENN PROPAG
DOI
Researchers Mehdi Bozorgi

Abstract

The (numerical) solution of a rectangular crack in a perfectly conducting surface is appropriate for non-destructive testing (NDT) applications to model faults. The paper presents a direct modeling technique for determining the H and E-polarized backscattering signatures of a two-dimensional crack in a metallic surface that is suitable for inverse scattering problem. The governing field integral equations (FIE) with logarithmic and hyper singular kernels is first discretized and solved by a collocation method based on Chebyshev polynomials. By using ad hoc quadrature rules, the integral equation is then reduced to a linear system of algebraic equations. This approach does not have the size or frequency limitations of the regular techniques such as modal expansion and quasi-static manners. The results are in good agreement with the entirely numerical and non-reversible solution of a finite element method.