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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 theIn 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.zeige mehrzeige weniger

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Metadaten
Autoren/innen:Francis Twumasi Boateng, Uwe Ewert, Thomas Kannengiesser, Uwe Zscherpel, Axel Griesche, Arne Kromm, Stephan Hohendorf, Bernard Redmer
Dokumenttyp:Zeitschriftenartikel
Veröffentlichungsform:Verlagsliteratur
Sprache:Englisch
Titel des übergeordneten Werkes (Englisch):Welding in the world
Jahr der Erstveröffentlichung:2016
Organisationseinheit der BAM:5 Werkstofftechnik
8 Zerstörungsfreie Prüfung
9 Komponentensicherheit
9 Komponentensicherheit / 9.4 Integrität von Schweißverbindungen
5 Werkstofftechnik / 5.0 Abteilungsleitung und andere
8 Zerstörungsfreie Prüfung / 8.0 Abteilungsleitung und andere
Jahrgang/Band:60
Ausgabe/Heft:5
Erste Seite:931
Letzte Seite:937
DDC-Klassifikation:Technik, Medizin, angewandte Wissenschaften / Ingenieurwissenschaften / Ingenieurwissenschaften und zugeordnete Tätigkeiten
Freie Schlagwörter:Aluminium alloys; GTA welding; Hot cracking; Radiography; Real-time operation
Themenfelder/Aktivitätsfelder der BAM:Material
DOI:https://doi.org/10.1007/s40194-016-0351-7
URL:http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS&DestLinkType=FullRecord;UT=WOS:000385027000009
ISSN:0043-2288
ISSN:1878-6669
Verfügbarkeit des Volltexts:Volltext-PDF im Netzwerk der BAM verfügbar ("Closed Access")
Datum der Freischaltung:12.08.2016
Referierte Publikation:Ja
Datum der Eintragung als referierte Publikation:03.11.2016