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Numerical Computer-Simulation of Fields and Waves in Nondestructive Testing

Published/Copyright: May 26, 2013
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Abstract

The emphasis of this paper is to provide an overview of the numerical computer simulation of fields and waves and its application in nondestructive testing (NDT). Several numerical methods are applied: the finite integration technique (FIT), the finite element method (FEM), the boundary element method (BEM), and the method of moments (MoM). The numerical modelling of the ultrasonic and eddy current NDT inspection technique is discussed. Similarly, the numerical computer simulation of coupled wave field problems, like the piezoelectric and the electromagnetic-ultrasonic transducer is documented. The performance of the computer simulation in nondestructive testing is presented on the basis of 3-D modelling results of the ultrasonic testing of reinforced concrete and eddy current testing of hot wire steel.

Kurzfassung

Ein Schwerpunkt des vorliegenden Aufsatzes ist es, einen Überblick über die numerische Computer-Simulation von Feldern und Wellen und deren Applikation in der Zerstörungsfreien Prüfung (ZfP) zu geben. Es werden verschiedene numerische Methoden, wie die Finite Integrationstechnik (FIT), die Finite-Elemente-Methode (FEM), die Rand-Elemente-Methode (REM) und die Momentenmethode (MoM) vorgestellt und zur numerischen Modellierung der Ultraschall- und Wirbelstromprüfung eingesetzt. Ebenso wird die numerische Computer-Simulation von gekoppelten Wellenfeldproblemen präsentiert, wie sie bei der Modellierung von piezoelektrischen Wandlern und elektromagnetischen Ultraschallwandlern auftritt. Die Leistungsfähigkeit der Computer-Simulation in der Zerstörungsfreien Prüfung wird anhand von 3D-Modellierungsergebnissen der Ultraschallprüfung von bewehrtem Beton und der Wirbelstromprüfung von Heißdraht dokumentiert.


René Marklein was born in Kassel, in 1964. He received the Dipl.-Ing. degree (Diploma I) in 1990, the Dipl.-Ing. degree (Diploma II) in 1992, and the Dr.-Ing. degree in 1997 all in Electrical Engineering from the University of Kassel. He is currently working at the level of a Senior Engineer and Lecturer in the Electromagnetic Theory Group, Department of Electrical Engineering/Computer Science, University of Kassel, Germany. His main research interest lies in the Numerical Modeling, Inverse Scattering, and Signal Processing of Electromagnetic, Acoustic, and Elastodynamic Fields and Waves as well as Coupled Field and Wave Problems with Applications in Nondestructive Testing (NDT), Ground Penetrating Radar (GPR), Remote Sensing, Medical Diagnostics, and Geophysics.


References

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Published Online: 2013-05-26
Published in Print: 2007-06-01

© 2007, Carl Hanser Verlag, München

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