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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.zeige mehrzeige weniger

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Metadaten
Autor*innen:Sanjeevareddy Kolkoori, Mehbub-Ur Rahman, P.K. Chinta, Marc Kreutzbruck, Jens PragerORCiD
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
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