|About this Abstract
||Materials Science & Technology 2019
||Joining of Advanced and Specialty Materials XXI
||Load-Deflection Relationship and Feedback Position Control to Compensate for the welding System During Friction Stir Welding
||Jinyoung Yoon, Minjung Kang, Cheolhee Kim
|On-Site Speaker (Planned)
When friction stir welding (FSW) is applied to high strength materials such as steel and Al/Fe dissimilar materials, high loads are imposed on the vertical axis of the welding system that holds the FSW tool due to the contact between the tool and the base material This load can deform the vertical axis and the desired depth is be fully welded. In this paper, the deflection is predicted by using a linear load-deflection model, and feedback position control is implemented to compensate for the estimated deflection. Feedback control is applied in spot and overlap FSW for Al/Fe dissimilar materials joint. Welding tools could accurately plunge into the desired depth with an error of less than 50 μm for friction stir spot welding and 32 μm for friction stir lap welding, respectively.