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Process control of stainless steel laser welding using an optical spectroscopic sensor (Contributo in atti di convegno)

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Process control of stainless steel laser welding using an optical spectroscopic sensor (Contributo in atti di convegno) (literal)

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Konuk A.R., Aarts R.G.K.M., Veld A.J.H., Sibillano T., Rizzi D., Ancona A. (2011)
Process control of stainless steel laser welding using an optical spectroscopic sensor
in 6th International WLT Conference on Lasers in Manufacturing, LiM, Munich; Germany, 23-26 May 2011
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Konuk A.R., Aarts R.G.K.M., Veld A.J.H., Sibillano T., Rizzi D., Ancona A. (literal)

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cited By (since 1996)8; Conference of org.apache.xalan.xsltc.dom.DOMAdapter@51910420 ; Conference Date: org.apache.xalan.xsltc.dom.DOMAdapter@7a5fab6 Through org.apache.xalan.xsltc.dom.DOMAdapter@21eec6a6; Conference Code:85228 (literal)

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Proceedings of the 6th International WLT conference on Lasers in Manufacturing LIM 2011, May 23-26 Munich, Germany (literal)

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Laboratory of Mechanical Automation, University of Twente, P.O. Box 217, Enschede, 7500 AE, Netherlands CNR-IFN UOS Bari, Physics Department, Via Amendola 173, I-70126 Bari, Italy (literal)

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Process control of stainless steel laser welding using an optical spectroscopic sensor (literal)

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Abstract

The in-process monitoring and real-time control of the penetration depth during laser welding is evaluated. An optical collimator collects the optical emission for measurement with a fast spectrometer. The sensor data are used to calculate the electron temperature and subsequently to determine the weld quality of overlap welds in AISI 304 stainless steel sheets performed both with CW Nd:YAG and CO2 lasers. A PI-controller adjusts the laser power aiming at a constant penetration depth and has been tested for Nd:YAG laser welding. Optical inspection of the weld verifies the results obtained with the proposed closed-loop system of spectroscopic sensor and controller. (literal)

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