%0 conference lecture %@ %A Mazzaferro, J.A.E.,Rosendo, T.S,Mazzaferro, C.C.P.,Ramos, F.D.,Tier, M.A.D.,Strohaecker, T.R.,dos Santos, J.F. %D 2008 %J International Symposium of Friction Stir Welding %N %P %T Preliminary Investigation on the Mechanical Behaviour of Aluminium Friction Spot Welds %U %X