NONDESTRUCTIVE ASSESSEMENT OF NANOSTRUCTURED MATERIALS BASED ON RECONFIGURABLE DESIGN

Abstract

A reconfigurable sensors design (RSD) has been studied in order to be used as sensors array in electromagnetic nondestructive evaluation. A set of constituent elements (CE) based on periodic unit cells (UCs) is based on an anisotropic response, but in the used wavelength range, the response of the material is approximately isotropic due to the spatial arrangement. The electromagnetic sensors array, whose construction and simulation are based on an RSD, is using Metal-Dielectric-Metal type material. The CAD/CAM models of RSD were designed in the multiple UC structure considering that the kinematics of a structure with CEs is function of the angle in the XY horizontal plane. The simulation of the operation of the wavelength excitation process, first performed theoretically using the finite difference time domain (FDTD) method, was carry out using specialized XFDTD software.