Sensors 2009, 9(10), 7753-7770; doi:10.3390/s91007753
Article

Defect Detection in Arc-Welding Processes by Means of the Line-to-Continuum Method and Feature Selection

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Received: 8 July 2009; in revised form: 28 August 2009 / Accepted: 24 September 2009 / Published: 29 September 2009
(This article belongs to the Section Physical Sensors)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: Plasma optical spectroscopy is widely employed in on-line welding diagnostics. The determination of the plasma electron temperature, which is typically selected as the output monitoring parameter, implies the identification of the atomic emission lines. As a consequence, additional processing stages are required with a direct impact on the real time performance of the technique. The line-to-continuum method is a feasible alternative spectroscopic approach and it is particularly interesting in terms of its computational efficiency. However, the monitoring signal highly depends on the chosen emission line. In this paper, a feature selection methodology is proposed to solve the uncertainty regarding the selection of the optimum spectral band, which allows the employment of the line-to-continuum method for on-line welding diagnostics. Field test results have been conducted to demonstrate the feasibility of the solution.
Keywords: arc-welding; plasma spectroscopy; feature selection; on-line monitoring
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MDPI and ACS Style

Garcia-Allende, P.B.; Mirapeix, J.; Conde, O.M.; Cobo, A.; Lopez-Higuera, J.M. Defect Detection in Arc-Welding Processes by Means of the Line-to-Continuum Method and Feature Selection. Sensors 2009, 9, 7753-7770.

AMA Style

Garcia-Allende PB, Mirapeix J, Conde OM, Cobo A, Lopez-Higuera JM. Defect Detection in Arc-Welding Processes by Means of the Line-to-Continuum Method and Feature Selection. Sensors. 2009; 9(10):7753-7770.

Chicago/Turabian Style

Garcia-Allende, P. Beatriz; Mirapeix, Jesus; Conde, Olga M.; Cobo, Adolfo; Lopez-Higuera, Jose M. 2009. "Defect Detection in Arc-Welding Processes by Means of the Line-to-Continuum Method and Feature Selection." Sensors 9, no. 10: 7753-7770.

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