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An Investigation into the Feasibility of an Oscillating Friction Stir Welding Process and Procedure Abstract The main goal of this undergraduate research project is to test the feasibility of developing an oscillating friction stir welding process. The goal is to minimize or alleviate the problems caused by the current process, where the tool bit turns through a 360 degree rotation as the base metal is stirred. The friction stir weld process has become very popular over the last few decades and because of its relatively short history still has some problems to overcome to make it as efficient as possible. Some of the problems inherent in the process are cold cracks, tunneling and lack of fusion through the weld. This is caused mostly because the weld doesn’t reach melting temperature and has uneven weld thermomechanical properties on the leading and trailing edges of the weld as it progresses. It is my thought that rotating through a path less than 360 could make the weld more even throughout and help with the final weld properties. This would require a mechanical process and means for allowing the bit to travel through less of a rotation. It is my hope to engineer a solution to this problem and to determine from that point if the idea is feasible. If this is proven to work it is my hope to improve the process and make it safer for industry to use, benefiting the public welfare. Biography
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