Sensors | |
Defect Detection in Arc-Welding Processes by Means of the Line-to-Continuum Method and Feature Selection | |
P. Beatriz Garcia-Allende1  Jesus Mirapeix2  Olga M. Conde2  Adolfo Cobo2  | |
[1] Photonics Engineering Group, University of Cantabria, Avda. de los Castros S/N, 39005 Santander, Spain; | |
关键词: arc-welding; plasma spectroscopy; feature selection; on-line monitoring; | |
DOI : 10.3390/s91007753 | |
来源: mdpi | |
【 摘 要 】
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.
【 授权许可】
CC BY
© 2009 by the authors; licensee Molecular Diversity Preservation International, Basel, Switzerland.
【 预 览 】
Files | Size | Format | View |
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RO202003190056161ZK.pdf | 2337KB | download |