Kakinada Institute of Engineering and Technology for Women
Abstract
In FSW, a rotating cylindrical pin tool is forced to plunge in to the plates to be welded and moved along their contact line. The tool penetrates into the work pieces. During this operation, frictional heat that is generated by contact friction between the tool and workpiece. The plasticized material is stirred by the tool and forced to “flow “ to the side and the back of the tool as the tool advantages as the temperature cools down, a solid continuous joint between the two plates is than formed. In this project work, DEFORM -3D is used to perform the finite element analysis and experimental investigation on the FSW in order to predict residual stresses, temperatures, normal stresses and distortion of the welded structures, that are induced during FSW of the given airframe structures made up of AA 2219 and AA 2014. A new technique of filling friction stir welding (FFSW) relying on a semi consumable joining tool has been developed to repair the keyhole left at the end of friction stir welding (FSW) seam. The FFSW process is able to repair the keyhole with both metallurgical and mechanical bonding characteristics and the FSW seam can be achieved without keyhole and other defects
