M. El-wazery - Production Engineering & Mechanical Design Department, Faculty of Engineering, Menoufia University, Shebin El-Kom, Egypt
O. Mabrouk - Production Engineering & Mechanical Design Department, Faculty of Engineering, Menoufia University, Shebin El-Kom, Egypt
A. R. El sissy - Currently, Mechatronics Engineering Department, High Institute of Engineering and Technology – Elmahala Elkobra, Egypt

Friction stir welding process is considering one of those solide state welding techgniqe. FSW process has high residuel stresses, distorsion and corrosion resistance. uktrasonic assisted FSW was optimized using the taghuci techniqe to determine the oprtimum condition of process paramters. Effect of process parameter like the vibration amplutude, traverse speed, and tool rotional speed on the oerformance was ansylzied to achive the maximum joint efficiency. anlysis of variance test was demonstrated using mintab sotware to determine the imoirtant of the process prameter that affect the ultimate tensile strength of FSW joints by detetming the contribution percentage if each paramter. the infunese kf uktrasonic vibration on the UTS is more orofound at high welding speeds, wher acoustic softening can privide FSW process with additional softening and therby, the material flow improved. Taghci analysis has shown that the optimum cobdtion observed for a welding speed of ۸۰m/min, rotional speed of ۸۰۹rpm, and amplutude of ۲۰um.

ultadonic assisted FSW, taghci techniqe, process parametet, uktimate tensile stregth