Dokument-ID Dokumenttyp Autoren/innen Persönliche Herausgeber/innen Haupttitel Abstract Auflage Verlagsort Verlag Herausgeber (Institution) Erscheinungsjahr Titel des übergeordneten Werkes Jahrgang/Band ISBN Veranstaltung Veranstaltungsort Beginndatum der Veranstaltung Enddatum der Veranstaltung Ausgabe/Heft Erste Seite Letzte Seite URN DOI Lizenz Datum der Freischaltung OPUS4-34287 Beitrag zu einem Tagungsband Laquai, René; Schaupp, Thomas; Müller, Bernd R.; Griesche, Axel; Bruno, Giovanni; Kannengießer, Thomas 3D imaging of hydrogen assisted cracking in metals using refraction enhanced synchrotron CT Hydrogen in metals can cause a degradation of the mechanical properties with possible subsequent hydrogen assisted cracking (HAC). Though, the mechanism of HAC is not completely understood yet and thus suitable methods for in situ investigations to characterise the crack formation are needed. X-ray computed tomography (CT) is a well-known tool for analysing these properties. However, the effective resolution of the detector system limits the detection of small defects by CT. Analyser based imaging (ABI) takes advantage of x-ray refraction at interfaces between volumes of different density, i.e. of cracks, pores, inclusions, etc., within the sample to detect defects smaller than the resolution of the detector system. In this study, measurements on an aluminium alloy weld showed that ABI allows us to resolve the 3D structure of cracks undetected by absorption based CT. Prospective investigations will analyse HAC in steels. Technische Universität Berlin / Bundesanstalt für Materialforschung und -prüfung 2015 NDT-CE 2015 - International symposium non-destructive testing in civil engineering (Proceedings) NDT-CE 2015 - International symposium non-destructive testing in civil engineering Berlin, Germany 2015-09-15 2015-09-17 1217 1224 2016-02-20