Robust technique for spectroscopic plasma analysis with application in real-time arc welding quality monitoring

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URI: http://hdl.handle.net/10902/2279
ISSN: 1560-2303
ISSN: 0091-3286
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Autoría
Mirapeix Serrano, Jesús MaríaAutoridad Unican; Cobo García, AdolfoAutoridad Unican; Conde Portilla, Olga MaríaAutoridad Unican; Jáuregui Misas, César; López Higuera, José MiguelAutoridad Unican
Fecha
2006-08
Derechos
© 2006 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic electronic or print reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
Publicado en
Optical Engineering, 2006, 45(8), 083002
Editorial
SPIE Society of Photo-Optical Instrumentation Engineers
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Palabras clave
Spectroscopy
Plasma emission
Arc-welding
Real-time processing
Resumen/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.
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