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Optical Engineering

Robust technique for spectroscopic plasma analysis with application in real-time arc welding quality monitoring
Author(s): Jesus M. Mirapeix; Adolfo Cobo; Olga Maria Conde; Cesar Jauregui; José Miguel López-Higuera
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Paper Abstract

A new real-time implementation of the Boltzmann-plot technique for optical spectroscopic analysis of thermal plasmas is presented. Applications are found in the monitoring of industrial processes in which plasma emission naturally occurs, such as arc and laser welding. Experimental results show the feasibility of using the Boltzmann-plot technique for real-time calculation of the electronic temperature of the plasma, a parameter that has been correlated with common defects found in the weld seam. The foundations of the proposed technique, its implementation, and its capability for the on-line detection of defects in tungsten inert gas (TIG) welding of steel parts are discussed.

Paper Details

Date Published: 1 August 2006
PDF: 5 pages
Opt. Eng. 45(8) 083002 doi: 10.1117/1.2336416
Published in: Optical Engineering Volume 45, Issue 8
Show Author Affiliations
Jesus M. Mirapeix, Univ. de Cantabria (Spain)
Adolfo Cobo, Univ. de Cantabria (Spain)
Olga Maria Conde, Univ. de Cantabria (Spain)
Cesar Jauregui, Univ. de Cantabria (Spain)
José Miguel López-Higuera, Univ. de Cantabria (Spain)

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