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NUMERICAL AND EXPERIMENTAL INVESTIGATIONS OF TRANSIENT TEMPERATURE DISTRIBUTION IN FRICTION STIR SPOT WELDING OF ALUMINUM ALLOY AA6061 | ||
| Al-Qadisiyah Journal for Engineering Sciences | ||
| Article 1, Volume 9, Issue 3, 2016, Pages 388-407 PDF (0 K) | ||
| Authors | ||
| Asst. Prof. Dr. Mohsin N. Hamzah; Asst. Prof. Dr. Sadeq H. Bakhy; Mujtaba A. Fliayyh | ||
| Abstract | ||
| Abstract Friction stir spot welding (FSSW) is a powerful and superior alternative to resistance spot welding and riveting for fabrication of aluminum sheet metal structures. The objective is to study the variation of transient temperature in a friction stir spot welded plate of AA6061 Aluminum Alloy. Numerical and experimental investigations were performed to study the temperature distribution during this process. Two thermocouples (type K) were placed at two specified locations from the pin hole to measure the transient temperature during FSSW welding process. Numerically, 3D finite element model was built using ANSYS workbench Ver.15 to simulate the thermal model during welding. The torque and axial load were measured experimentally to determine the coefficient of friction, which used with the other parameters, to find the applied heat flux for the welding process. The temperature distributions of the specimens welded by three tools with different pins; i.e. cylindrical, tapered and triangular, at constant other FSSW parameters, were investigated and compared with the experiment temperature measured using the thermocouples to validate the results. The results show that the temperature produced from the welded specimen with cylindrical pin shape has the highest temperature distributions due to high axial load and torque as compared with other tool pin profiles. Also the results show good agreement between numerical and experimental with a percentage error (-3.09 – 7.83) %. | ||
| Keywords | ||
| KEYWORDS; Temperature Distributions | ||
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