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Mechanical behaviour of a friction stir spot welding lap under static loading

type de publication      communication internationale avec actes publiés
date de publication 2011
auteur(s) Herbelot Christophe; Dang-Hoang Thong; Imad Abdellatif
  
conférence Conférence Advances in Materials and Processing Technologies
     dates de 24-10-2011 à 27-10-2011
     lieu Paris
     nom des actes AIP Conference Proceedings, Volume 1315, pp. 917-922
  
pages 917 – 922
résumé This paper investigates the fracture and damage of a single-lap Friction Stir Spot Welding assembly formed from thin sheets of aluminum alloy 6082 T6. The process parameters and tool geometry are fixed. Two configurations are taken into account for the analysis of the global mechanical behaviour of the link. An experimental approach was carried out in order to analyze the sequence of damage mechanisms using acoustic emission (A.E.) and measurement of fields by digital image correlation (D.I.C.) techniques simultaneously. The A.E. technique allows the monitoring of the evolution of acoustic activities. The D.I.C. technique confirms the damage scenarios after the treatment of strain field at any point near the fastener and especially between the exit hole and the shoulder footprint. The coupling of those techniques make it possible to distinguish characteristic points and so phases describing the global mechanical behaviour of the FSSW joint.
mots clés assembly; FSSW, damage mechanisms; acoustic emission (A.E.); digital image correlation (D.I.C.).
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