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Authors: Heeshin Knag
ABSTRACT. In this paper, a study of quality monitoring technology for the laser welding was conducted. The laser welding and the industrial robotic systems were used with robot-based laser welding systems. The laser system used in this study was 1.6 kW fiber laser, while the robot system was Industrial robot (pay-load : 130 kg). The robot-based laser welding system was equipped with a laser scanner system for remote laser welding. The welding joints of steel plate and steel plate coated with zinc were butt and lapped joints. The remote laser welding system with laser scanner system is used to increase the processing speed and to improve the efficiency of processes. The welding joints of steel plate and steel plate coated with zinc were butt and lapped joints. The quality testing of the laser welding was conducted by observing the shape of the beads on the plate and the cross-section of the welded parts, analyzing the results of mechanical tension test, and monitoring the plasma intensity by using UV and IR sensor. This paper proposes the quality monitoring method and the robot-based remote laser welding system as a means of resolving the limited welding speed and accuracy of conventional laser welding systems.
Keywords: process, inspection, defect, monitoring, laser
 F. Coste et al., A Rapid Seam Tracking Device for YAG and CO2 High-Speed Laser Welding, Proc. ICALEO 85, 1998, 217-223.
 T. Eimermann, Hem Flange Laser Welding, 25th ISATA Symposium, No. 921089, Florence, Italy, June, 1992.
 E. Beyer, A. Klotzbach, V. Fleischer, and L. Morgenthal, Nd:YAG-Remote Welding with Robots, Proceedings of Lasers in Manufacturing, 2003, 367-373.
 A. Klotzbach, V. Fleischer, L. Morgenthal, and E. Beyer, Sensor guided remote welding system for YAG-laser applications, Proceedings of Lasers in Manufacturing, 2005, 17-19.
 M. W. de Graaf, R. G. K. M. Aarts, J. Meijer, and J. B. Jonker, Robot-sensor synchronization for real-time seam-tracking in robotic laser welding, Proc. 23rd Int. Cong. On Applications of Lasers and Electro-Optics, 2004, 1301.
 P. Aubry, F. Coste, R. Fabbro, and D. Frechett, 2D YAG welding on non-liner trajectories with 3D camera seam tracker following for automotive applications, Laser Appls. Auto Industry, Section F-ICALEO, 2000, 21.
 E. Beyer, and P. Abels, Process Monitoring in Laser Materials Processing, Laser Advanced Materials Processing (LAMP92), 1992, 433-438.
 Hee-shin Kang, Jeong Suh, Taik-Dong Cho. Study on quality monitoring of laser welding, 2009, IEEE International Symposium on Industrial Electronics, DOI: 10.1109/ISIE.2009.5217434
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