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Darstellung eines Beispiels für die quantitative ZfP

: Schmitz, V.; Müller, W.; Chakhlov, S.

Deutsche Gesellschaft für Zerstörungsfreie Prüfung e.V. -DGZfP-, Berlin:
Seminar ZfP und Bruchmechanik 1998. Vorträge
1998 (DGZfP-Berichtsbände 65)
ISBN: 3-931381-26-9
Seminar ZfP und Bruchmechanik <1998, Berlin>
Conference Paper
Fraunhofer IZFP ()
austenitic weld; austenitische Schweißnaht; defect analysis; Fehleranalyse; Qualitätssicherung; quality assurance; Ultrasonic Synthetic Aperture Focussing Technique

The application of reconstructing algorithms like the Ultrasonic Synthetic Aperture Focussing Method allows to image defects in components. How close an "image" approaches the shape of a "real defect" depends on the quality of data. With a software package "3D-Ray-Tracing" the propagation of SH-, SV-, and longitudinal waves could be visualized including mode conversion at the seams of the weld. The weld has been modeled by its elastic constants and grain orientation. Two types of defects have been simulated: a surface connected crack and a lack of side wall fusion. Simulating different insonification angles, it could be shown, that the 60ø probe is superior to that of the 45ø probe.