Real-time X-ray Radiography for Hot Crack Detection during Welding
- Fast digital radiography was used to observe the crack development during single pass bead-on-plate gas tungsten arc welding with a minifocus X-ray source and a digital detector array with 75-micrometer pixel size. The sample material were 5 mm thick AlMgSi plates. An acquisition rate of 12 frames per second and an exposure time of 40 ms per frame were used for real-time observation of the hot crack propagation during welding. The basic spatial resolution of the images is about 80 µm. A 3D laminographic reconstruction of the acquired 2D radiographic images gives access to the volumetric extent of the cracks in the welded sample. The parallel use of a high-speed camera during welding allows the real-time inspection of surface cracks. The development of surface cracks was compared with the crack’s distribution in the sample volume and these results were correlated to the used welding parameters.
Autor*innen: | Axel GriescheORCiD |
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Koautor*innen: | Francis Boateng, Arne KrommORCiD, Thomas KannengießerORCiD, Uwe ZscherpelORCiD, Uwe Ewert |
Dokumenttyp: | Vortrag |
Veröffentlichungsform: | Präsentation |
Sprache: | Englisch |
Jahr der Erstveröffentlichung: | 2016 |
DDC-Klassifikation: | Naturwissenschaften und Mathematik / Chemie / Analytische Chemie |
Technik, Medizin, angewandte Wissenschaften / Ingenieurwissenschaften / Ingenieurwissenschaften und zugeordnete Tätigkeiten | |
Freie Schlagwörter: | Hot crack; Laminography; Welding; X-ray imaging; X-ray radiography |
Veranstaltung: | MS&T 2016 |
Veranstaltungsort: | Salt Lake City, Utah, USA |
Beginndatum der Veranstaltung: | 23.10.2016 |
Enddatum der Veranstaltung: | 27.10.2016 |
Verfügbarkeit des Dokuments: | Datei im Netzwerk der BAM verfügbar ("Closed Access") |
Datum der Freischaltung: | 03.11.2016 |
Referierte Publikation: | Nein |
Eingeladener Vortrag: | Nein |