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

doi:10.3390/s91007753

This article is

freely available
re-usable

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

P. Beatriz Garcia-Allende* , Jesus Mirapeix, Olga M. Conde, Adolfo Cobo and Jose M. Lopez-Higuera

Photonics Engineering Group, University of Cantabria, Avda. de los Castros S/N, 39005 Santander, Spain

* Author to whom correspondence should be addressed.

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)

Download PDF Full-Text [2338 KB, uploaded 29 September 2009 08:55 CEST]

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

Article Statistics

Click here to load and display the download statistics.

Cite This Article

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 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(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.

Sensors EISSN 1424-8220 Published by MDPI Publishing, Basel, Switzerland RSS E-Mail Table of Contents Alert