Misalignment detection and enabling of seam tracking for friction stir welding

Authors: Fleming, P. A.; Lammlein, D. H.; Wilkes, D. M.; Cook, G. E.; Strauss, A. M.; Delapp, D. R.; Hartman, D. A.

Source: Science and Technology of Welding & Joining, Volume 14, Number 1, January 2009 , pp. 93-96(4)

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Abstract:

This paper describes a technique for determining the position of a friction stir welding (FSW) tool with respect to the weld seam during welding. Forces are used as a feedback signal, and a general regression neural network is trained to predict offset position given weld forces. Experimental results demonstrate the accuracy of the developed position predictor. This technique is proposed for online misalignment detection or as a position estimator for in-process tracking of the weld seam for FSW and robotic FSW.

Keywords: AUTOMATION; MISALIGNMENT; CONTROL; SEAM TRACTING; FRICTION STIR WELDING

Document Type: Research Article

DOI: http://dx.doi.org/10.1179/136217108X372568

Publication date: 2009-01-01

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