论文信息 - Ultrasonic and Electromagnetic Wave Propagation and Inverse Scattering Applied to Concrete

Ultrasonic and Electromagnetic Wave Propagation and Inverse Scattering Applied to Concrete

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).

René Marklein | Karl-Jörg Langenberg | R. Bärmann | M. Brandfaß

[1] Hollis H. C. Chen. Theory of electromagnetic waves : a coordinate-free approach / Hollis C. Chen , 1985 .

[2] Herbert Überall,et al. Radar Target Imaging , 1994 .

[3] N. Bojarski,et al. A survey of the physical optics inverse scattering identity , 1982 .

[4] René Marklein,et al. THE ULTRASONIC MODELING CODE EFIT AS APPLIED TO INHOMOGENEOUS DISSIPATIVE ISOTROPIC AND ANISOTROPIC MEDIA , 1995 .

[5] Jan Drewes Achenbach,et al. The Evaluation of materials and structures by quantitative ultrasonics , 1993 .

[6] D. Thompson,et al. Review of Progress in Quantitative Nondestructive Evaluation , 1982 .

[7] Subhendu K. Datta,et al. Propagation of Transient Elastic Waves in Stratified Anisotropic Media , 1987 .

[8] M. Brandfaß,et al. A Unified Theory of Multidimensional Electromagnetic Vector Inverse Scattering Within the Kirchhoff or Born Approximation , 1994 .

[9] Karl-Jörg Langenberg. Introduction to the special issue on inverse problems , 1989 .

[10] Klaus Mayer,et al. Inverse Methods and Imaging , 1993 .

[11] B. Auld,et al. Acoustic fields and waves in solids , 1973 .

[12] René Marklein,et al. Three-dimensional imaging system based on Fourier transform synthetic aperture focusing technique , 1990 .

[13] René Marklein,et al. Numerical modeling of elastic wave propagation and scattering with EFIT — elastodynamic finite integration technique , 1995 .