Abstract

Nondestructive testing in civil engineering (NDT-CE) comprises the application of ultrasonic and electromagnetic wave propagation and inverse scattering. The aims of our current research are threefold: 1. Numerical modeling of ultrasonic wave propagation and scattering in concrete with the EFIT code (EFIT: Elastodynamic Finite Integration Technique) to get a better understanding of the ultrasonic wave phenomena in concrete, 2. application of the elastodynamic vector imaging scheme EL-FT-SAFT to modeled data (EL-FT-SAFT: Elastodynamic Fourier Transform Synthetic Aperture Focusing Technique) to detect delaminations in a metal duct or for thickness determination, 3. application of the electromagnetic vector imaging algorithm HD-POFFIS to measurements in order to locate a metal duct in reinforced concrete (HD-POFFIS: Hertzian Dipole Physical Optics Far-Field Inverse Scattering).

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