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A Real-Time Spectroscopic Sensor for Monitoring Laser Welding Processes

CNR-INFM Regional Laboratory LIT3, via Amendola 173, Bari, Italy
Dipartimento Interateneo di Fisica, Università e Politecnico di Bari, Via E. Orabona 4, I-70126 Bari, Italy
Author to whom correspondence should be addressed.
Sensors 2009, 9(5), 3376-3385;
Received: 4 March 2009 / Revised: 28 April 2009 / Accepted: 29 April 2009 / Published: 7 May 2009
(This article belongs to the Special Issue State-of-the-Art Sensors Technology in Italy)
In this paper we report on the development of a sensor for real time monitoring of laser welding processes based on spectroscopic techniques. The system is based on the acquisition of the optical spectra emitted from the laser generated plasma plume and their use to implement an on-line algorithm for both the calculation of the plasma electron temperature and the analysis of the correlations between selected spectral lines. The sensor has been patented and it is currently available on the market. View Full-Text
Keywords: Optical sensor; laser welding; plasma spectroscopy Optical sensor; laser welding; plasma spectroscopy
MDPI and ACS Style

Sibillano, T.; Ancona, A.; Berardi, V.; Lugarà, P.M. A Real-Time Spectroscopic Sensor for Monitoring Laser Welding Processes. Sensors 2009, 9, 3376-3385.

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