Modeling of electromagnetic wave scattering by concrete specimens

Abstract This paper presents a novel application of finite difference-time domain (FD-TD) modeling to concrete to study the interaction of concrete with electromagnetic waves. The purpose of this work is to visualize the propagation of the electromagnetic fields in a dielectric medium of concrete in an effort to obtain onedimensional images of a concrete target for nondestructive testing purposes. A Gaussian pulse plane wave is directed to laboratory size concrete specimens as an excitation source. Snap shots of computer simulation are shown to display wave propagation and scattering through and by the concrete specimens. Geometry of the targets is varied with different dimensions, and with or without an inclusion.