Resistance spot welding inversed imaging based on the truncated total least squares regularization

Naifeng Fan; Zhen Luo; Wenbo Xuan; Yang Li; Rui Wang

doi:10.1117/12.887961

26 May 2011 Resistance spot welding inversed imaging based on the truncated total least squares regularization

Naifeng Fan, Zhen Luo, Wenbo Xuan, Yang Li, Rui Wang

Proceedings Volume 7997, Fourth International Seminar on Modern Cutting and Measurement Engineering; 799738 (2011) https://doi.org/10.1117/12.887961
Event: Fourth International Seminar on Modern Cutting and Measuring Engineering, 2010, Beijing, China

Abstract

Resistance spot welding is an important technology in the field of automobile manufacturing, the quality of nugget determines the quality and strength of body to a large extent. It is, however, irrational to apply the resistance spot welding to the dominations higher requirement to the quality of nugget for the limitation of the quality control. In this paper, based on the electromagnetic theory, the inversion theory is introduced to analyze the spot welding process. First, the magnetic field around the nugget is detected, with which the current density distribution in the welding nuclear can be calculated inversely, where the truncated total least squares (TTLS) method is recommended to solve the inverse problem. The result shows that inverse images can basically reflect the current distribution in the cross section of nugget under different welding currents.

Citation Download Citation

Naifeng Fan, Zhen Luo, Wenbo Xuan, Yang Li, and Rui Wang "Resistance spot welding inversed imaging based on the truncated total least squares regularization", Proc. SPIE 7997, Fourth International Seminar on Modern Cutting and Measurement Engineering, 799738 (26 May 2011); https://doi.org/10.1117/12.887961

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