Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
Digital Radiographic Inspection and Characterization of Defects in Joined Aluminum Alloy AA5083 for Shipbuilding by the FSW Process
Submission Author:
Luis Carlos Fabrício Filho , PE
Co-Authors:
Luis Carlos Fabrício Filho, Tiago Leite Rolim, Rubens Santos, Hissae Fujiwara, Ayako Ono, Armando Hideki Shinohara, Daniel de Souza Queiroga, Hidetoshi Fujii
Presenter: Luis Carlos Fabrício Filho
doi://10.26678/ABCM.COBEM2017.COB17-2304
Abstract
The friction stir welding (FSW) process for joining the aluminum alloys is a relatively new and is considered a more interesting method than the traditional arc welding process because the residual stress is substantially low and there is practically no distortion of the welded joint. However, even though from both surfaces of the joint it appears to be free of defects by the visual inspection, internal welding failures such as voids and microstructure changes can be generated during the joining by the FSW process. So, their detection and analysis are fundamental for the improvement of the welding process by the FSW. In the present work, welding of aluminum alloy AA5083 base metal plates for shipbuilding were conducted under supervision of Prof. H. Fujii, authority in FSW, using the facility of Department of Mechanical, Materials and Naval Engineering of UFPE, the aluminum alloy plates and FSW tools provided by JWRI of Osaka University. The detection and characterization of inner defects in the welded joint were conducted by the high spatial resolution digital radiography system using high sensitivity detector Imaging Plate. In order to support to get high quality radiographic images of defects along the welded joint, realistic radiographic numerical simulations were previously conducted with a commercial software.
Keywords
aluminum alloy AA5083, shipbuilding, FSW – Friction Stir Welding, defects detection and characterization, digital radiography
