Back to Search Start Over

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

Authors :
Jose Miguel Lopez-Higuera
Jesus Mirapeix
Olga M. Conde
P. Beatriz Garcia-Allende
Adolfo Cobo
Universidad de Cantabria
Source :
Sensors (Basel, Switzerland), Sensors; Volume 9; Issue 10; Pages: 7753-7770, Sensors, Vol 9, Iss 10, Pp 7753-7770 (2009), Sensors, 2009, 9(10), 7753-7770, UCrea Repositorio Abierto de la Universidad de Cantabria, Universidad de Cantabria (UC)
Publication Year :
2009
Publisher :
Molecular Diversity Preservation International (MDPI), 2009.

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.

Details

Language :
English
ISSN :
14248220
Volume :
9
Issue :
10
Database :
OpenAIRE
Journal :
Sensors (Basel, Switzerland)
Accession number :
edsair.doi.dedup.....e093b8eb7ddb3f5152271e304b040a7a