Quantitative evaluation of ultrasonic sound fields in anisotropic austenitic welds using 2D ray tracing model
- Ultrasonic investigation of inhomogeneous anisotropic materials such as austenitic welds is complicated because its columnar grain structure leads to curved energy paths, beam splitting and asymmetrical beam profiles. A ray tracing model has potential advantage in analyzing the ultrasonic sound field propagation and there with optimizing the inspection parameters. In this contribution we present a 2D ray tracing model to predict energy ray paths, ray amplitudes and travel times for the three wave modes quasi longitudinal, quasi shear vertical, and shear horizontal waves in austenitic weld materials. Inhomogenity in the austenitic weld material is represented by discretizing the inhomogeneous region into several homogeneous layers. At each interface between the layers the reflection and transmission problem is computed and yields energy direction, amplitude and energy coefficients. The ray amplitudes are computed accurately by taking into account directivity, divergence and density ofUltrasonic investigation of inhomogeneous anisotropic materials such as austenitic welds is complicated because its columnar grain structure leads to curved energy paths, beam splitting and asymmetrical beam profiles. A ray tracing model has potential advantage in analyzing the ultrasonic sound field propagation and there with optimizing the inspection parameters. In this contribution we present a 2D ray tracing model to predict energy ray paths, ray amplitudes and travel times for the three wave modes quasi longitudinal, quasi shear vertical, and shear horizontal waves in austenitic weld materials. Inhomogenity in the austenitic weld material is represented by discretizing the inhomogeneous region into several homogeneous layers. At each interface between the layers the reflection and transmission problem is computed and yields energy direction, amplitude and energy coefficients. The ray amplitudes are computed accurately by taking into account directivity, divergence and density of rays, phase relations as well as transmission coefficients. Ultrasonic sound fields obtained from the ray tracing model are compared quantitatively with the 2D Elastodynamic Finite Integration Technique (EFIT). The excellent agreement between both models confirms the validity of the presented ray tracing results. Experiments are conducted on austenitic weld samples with longitudinal beam transducer as transmitting probe and amplitudes at the rear surface are scanned by means of electrodynamical probes. Finally, the ray tracing model results are also validated through the experiments.…
Autor*innen: | Sanjeevareddy Kolkoori, Mehbub-Ur Rahman, P.K. Chinta, Marc Kreutzbruck, Jens PragerORCiD |
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Persönliche Herausgeber*innen: | D. O. Thompson, D. E. Chimenti |
Dokumenttyp: | Beitrag zu einem Tagungsband |
Veröffentlichungsform: | Verlagsliteratur |
Sprache: | Englisch |
Titel des übergeordneten Werkes (Englisch): | Review of progress in quantitative nondestructive evaluation, volume 31 |
Jahr der Erstveröffentlichung: | 2012 |
Herausgeber (Institution): | Iowa State University |
Verlag: | American Institute of Physics |
Verlagsort: | Melville, NY |
Ausgabe/Heft: | 1430 |
Erste Seite: | 1227 |
Letzte Seite: | 1234 |
Freie Schlagwörter: | Austenitic weld; Ray directivity; Ray tracing; Ultrasonic sound field |
Veranstaltung: | 38th Annual Review of Progress in Quantitative Nondestructive Evaluation |
Veranstaltungsort: | Burlington, VT, USA |
Beginndatum der Veranstaltung: | 2011-07-17 |
Enddatum der Veranstaltung: | 2011-07-22 |
DOI: | 10.1063/1.4716359 |
ISSN: | 0743-0760 |
ISSN: | 0094-243X |
ISBN: | 978-0-7354-1013-8 |
Bemerkung: | Serientitel: AIP conference proceedings – Series title: AIP conference proceedings |
Verfügbarkeit des Dokuments: | Physisches Exemplar in der Bibliothek der BAM vorhanden ("Hardcopy Access") |
Bibliotheksstandort: | Sonderstandort: Publica-Schrank |
Datum der Freischaltung: | 19.02.2016 |
Referierte Publikation: | Ja |
Datum der Eintragung als referierte Publikation: | 02.08.2012 |