Use of the plasma RMS signal for on-line welding quality monitoring
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AuthorMirapeix Serrano, Jesús María; Cobo García, Adolfo; García Allende, Pilar Beatriz; Conde Portilla, Olga María; López Higuera, José Miguel
© 2010 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic electronic or print reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
Proceedings of SPIE, 2010, vol. 7726, 772625
Optical Sensing and Detection, Bruselas, 2010
SPIE Society of Photo-Optical Instrumentation Engineers
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Plasma optical spectroscopy
In this paper a new spectroscopic monitoring parameter is proposed for the on-line monitoring of welding processes, the plasma RMS signal, which is determined by considering the contribution from the spectral samples over a particular spectral window. This parameter is directly related to the heat input that can be estimated by measuring both welding voltage and current, but it exhibits a higher sensitivity to the appearance of weld defects. A comparison between the results obtained from the different spectroscopic parameters will be presented, with data from both experimental and field arc-welding tests.