چكيده به لاتين
The friction stir welding process (FSW), was invented at the TWI Institute in 1991. Due to many advantages of the FSW, welding of many aluminum alloy joints, including aerospace series, which before introduction of this method, was hard or sometimes non-weldable due to a significant reduction in bond strength compared to the base metal now with this method is possible. In this study, the Taguchi experimental design was used to determine the four factors of: rotational velocity, speed, sholder diameter and pin shape, which experimentally had the greatest effect on the mechanical properties of aluminum alloy 5083 in the attachment of the lip The lips have been chosen and for each of the factors, four levels have been selected, in which case we will have a design table for the L16 experiments using the Taguchi method. For this purpose, sheets of Aluminum 5083 alloy with a thickness of 5mm was used. rotational speeds of 600, 800, 1200 and 160orpm and forward speeds of 40, 80, 120 and 160mm / min were used for welding with HPL-H13. Fracture tests were used to study the mechanical properties of bonding. In addition to the failure test results, the cost of each test is also calculated. Multi-objective optimization is used to find a state that is both robust and economically feasible.
