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 OPUS4-37128 Zeitschriftenartikel Boateng, Francis Twumasi; Ewert, Uwe; Kannengießer, Thomas; Zscherpel, Uwe; Griesche, Axel; Kromm, Arne; Hohendorf, Stephan; Redmer, Bernard Real-time radiography for observation of crack growth during GTA (Gas Tungsten Arc) welding In situ crack detection in the mushy zone and the solid weld of a gas tungsten arc (GTA) weld using X-ray imaging during welding is a new research area for NDT inspection. Usually, NDT flaw detection is done after the complete solidification of the weld seam. In this paper, we present the use of real-time radiography with a minifocus X-ray source (YXLON X-ray tube Y.TU 225-D04) and a 75μm pixel size digital detector array (Dexela 1512) for the acquisition of 2D radiographic images by a sequence of exposures with time intervals of 80 ms for hot crack detection during single pass bead-on-plate GTA welding of 3 mm thick plates of aluminium alloy AlMgSi (6060). An analysis of the crack distribution in the weld sample is conducted from the acquired 2D radiographs and its corresponding 3D volumetric reconstruction achieved by linear coplanar digital laminography. This in situ approach opens new possibilities in the field of hot crack research by having the direct information of both the crack initiation and growth and its correlation to the welding parameters. 2016 Welding in the world 60 5 931 937 10.1007/s40194-016-0351-7 2016-08-12 OPUS4-33768 Vortrag Boateng, Francis Twumasi Real time radiography for observation of crack growth during GTA - welding 2015 IIW international conference, High-strength materials - challenges and applications (Commission V) IIW international conference, High-strength materials - challenges and applications (Commission V) Helsinki, Finland 2015-06-29 2015-07-03 2016-02-20 OPUS4-33770 Posterpräsentation Boateng, Francis Twumasi Real time in-situ radiography for hot crack detection during welding 2015 Digital Industrial Radiology and Computed Tomography (DIR) Digital Industrial Radiology and Computed Tomography (DIR) Ghent, Belgium 2015-06-22 2015-06-25 2016-02-20 OPUS4-33767 Vortrag Boateng, Francis Twumasi Real time in-situ radiography for hot crack detection during welding 2015 Digital Industrial Radiology and Computed Tomography (DIR) Digital Industrial Radiology and Computed Tomography (DIR) Ghent, Belgium 2015-06-22 2015-06-25 2016-02-20