Seam Tracking Monitoring Based on Molten Pool Infrared Images

Abstract:

Visual sensors can be used for monitoring the welding seam and seam tracking, but it is difficult to acquire the deviations between the laser beam spot and the weld seam from the images because of the strong disturbances caused by spatters and plume. An extraction method was developed to detect the deviations between the laser beam spot and the weld seam during high power fiber laser welding. Laser welding experimental results showed that the deviations could be detected accurately, and the proposed method can be used to monitor the seam tracking status.

• Periodical: Advanced Materials Research (Volumes 532-533)
• Pages: 394-397
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.532-533.394
• Online since: June 2012
• Authors: Ren He Zhen, Xiang Dong Gao
• Keywords: Image Processing, Laser Welding, Monitoring, Seam Tracking

References

[1] L.F. Mei, G.Y. Chen, X.Z. Jin, Y. Zhang and Q. Wu: Optics and Lasers in Engineering, Vol. 47 (2009) , pp.1117-1124.

[2] E. Le Guen, R. Fabbro, M. Carin and F. Coste, P. Le Masson: Optics & Laser Technology, Vol. 43 (2011), pp.1155-1166.

DOI: 10.1016/j.optlastec.2011.03.002

[3] X.D. Gao, C.M. Zhao and D.K. Ding : Welding Technology, Vol. 35 (2006) No. 2, pp.3-7.

[4] Y.P. Chen, X.D. Gao, Z.L. Chen and Z.M. Xie: Welding Technology, Vol. 34 (2005) No. 4, pp.25-27.

[5] J.H. Chen, X.D. Gao, M.T. Liu, D.K. Ding and C.M. Zhao: Welding Technology, Vol. 37 (2008) No. 1, pp.11-12.