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3-D image-based simulation for ultrasonic wave propagation in heterogeneous and anisotropic materials

: Nakahata, K.; Schubert, F.; Koehler, B.


Thompson, D.O. ; American Institute of Physics -AIP-, New York:
Review of progress in quantitative nondestructive evaluation : San Diego, California, 18-23 July 2010, Volume 30A, Volume 30B
New York, N.Y.: AIP Press, 2011 (AIP Conference Proceedings 1335)
ISBN: 978-0-7354-0888-3
ISSN: 0094-243X
Annual Review of Progress in Quantitative Nondestructive Evaluation (QNDE) <37, 2010, San Diego/Calif.>
Conference Paper
Fraunhofer IZFP, Institutsteil Dresden ( IKTS-MD) ()

Time domain simulation tools for ultrasonic wave propagation in a target material with a complex outer surface or various inclusions are developed by combining the finite integration technique (FIT) and the finite element method (FEM) with an image-based modeling. In our simulation, the geometry of the target is determined by a digital image such as X-ray picture, CAD data, etc. and the processed voxel data is directly fed into the numerical calculation with the FIT or FEM. The accuracy of the two methods is discussed by comparison with the boundary element method. A simulation of the ultrasonic testing for a concrete material is shown with the 3-D image-based FIT.