Closed Loop Control of Penetration Depth during CO2 Laser Lap Welding Processes
作者： Teresa Sibillano , Domenico Rizzi , Francesco P. Mezzapesa , Pietro Mario Lugarà , Ali Riza Konuk
DOI: 10.3390/S120811077
关键词:
摘要: In this paper we describe a novel spectroscopic closed loop control system capable of stabilizing the penetration depth during laser welding processes by controlling power. Our approach is to analyze optical emission from generated plasma plume above keyhole, calculate its electron temperature as process-monitoring signal. Laser power has been controlled using quantitative relationship between and temperature. The sensor able correlate in real time difference measured reference value for requested depth. Accordingly adjusts power, thus maintaining
mdpi.com
core.ac.uk
utwente.nl
researchgate.net 
sci-hub.se 参考文章(26)
MW De Graaf, J Olde Benneker, Ronald GKM Aarts, J Meijer, Jan B Jonker, None, Robust process-controller for Nd:YAG welding 24th International Congress on Applications of Lasers & Electro-Optics, ICALEO 2005. ,vol. 2005, pp. 862- 868 ,(2005) , 10.2351/1.5060453
S Postma, Ronald GKM Aarts, Johan Meijer, Jan B Jonker, None, Penetration control in laser welding of sheet metal Journal of Laser Applications. ,vol. 14, pp. 210- 214 ,(2002) , 10.2351/1.1493764
Yousuke Kawahito, Terumasa Ohnishi, Seiji Katayama, In-process monitoring and feedback control for stable production of full-penetration weld in continuous wave fibre laser welding Journal of Physics D: Applied Physics. ,vol. 42, pp. 085501- ,(2009) , 10.1088/0022-3727/42/8/085501
Claus Bagger, Flemming O. Olsen, Laser welding closed-loop power control Journal of Laser Applications. ,vol. 15, pp. 19- 24 ,(2003) , 10.2351/1.1536651
Zhang Xudong, Chen Wuzhu, Jiang Ping, Liu Chun, Guo Jing, Double closed-loop control of the focal point position in laser beam welding Measurement Science and Technology. ,vol. 14, pp. 1938- 1943 ,(2003) , 10.1088/0957-0233/14/11/011
Teresa Sibillano, Antonio Ancona, Domenico Rizzi, Valentina Lupo, Luigi Tricarico, Pietro Mario Lugarà, Plasma plume oscillations monitoring during laser welding of stainless steel by discrete wavelet transform application. Sensors. ,vol. 10, pp. 3549- 3561 ,(2010) , 10.3390/S100403549
Fabrice Bardin, Adolfo Cobo, Jose M. Lopez-Higuera, Olivier Collin, Pascal Aubry, Thierry Dubois, Mats Högström, Per Nylen, Peter Jonsson, Julian D. C. Jones, Duncan P. Hand, Optical techniques for real-time penetration monitoring for laser welding Applied Optics. ,vol. 44, pp. 3869- 3876 ,(2005) , 10.1364/AO.44.003869
Francis M. Haran, Duncan P. Hand, Chris Peters, Julian D. C. Jones, Focus control system for laser welding Applied Optics. ,vol. 36, pp. 5246- 5251 ,(1997) , 10.1364/AO.36.005246
T. Sibillano, D. Rizzi, A. Ancona, S. Saludes-Rodil, J. Rodríguez Nieto, H. Chmelíčková, H. Šebestová, Spectroscopic monitoring of penetration depth in CO2 Nd:YAG and fiber laser welding processes Journal of Materials Processing Technology. ,vol. 212, pp. 910- 916 ,(2012) , 10.1016/J.JMATPROTEC.2011.11.016
Milton S. F. Lima, Rudimar Riva, Aline C. de Oliveira, Gabriel R. Siqueira, Laser beam welding aerospace aluminum using fiber lasers XVII International Symposium on Gas Flow and Chemical Lasers and High Power Lasers. ,vol. 7131, pp. 713128- ,(2008) , 10.1117/12.815278