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
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.
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