Influence of Laser Beam Intensity Distribution on Keyhole Geometry and Process Stability Using Green Laser Radiation

Kaufmann F, Maier A, Schrauder J, Roth S, Schmidt M (2024)


Publication Type: Conference contribution

Publication year: 2024

Journal

Publisher: Springer Science and Business Media Deutschland GmbH

Pages Range: 216-227

Conference Proceedings Title: Lecture Notes in Mechanical Engineering

Event location: Porto PT

ISBN: 9783031382406

DOI: 10.1007/978-3-031-38241-3_25

Abstract

Laser beam welding is being more frequently employed to join copper materials. The use of green laser radiation shows the advantage of significantly higher absorptivity for these metals compared to near-infrared radiation. Therefore, a change in process stability and defect formation is expected. In addition, the effect of modifying the intensity distribution on the formation of weld seam defects and the geometric properties of the seam in deep penetration mode is largely unexplored. Thus, the aim of this work is the characterization of process dynamics and defect formation in correlation to the focal position and the intensity distribution by means of high-speed imaging and metallographic analysis. A significant reduction of seam imperfections is observed for a gaussian beam profile compared to a Top Hat intensity distribution. An advantageous seam shape and the earlier onset of the deep penetration welding process are favorable reasons for the application of this intensity distribution, while medium to high processing speeds further improve the processing quality.

Authors with CRIS profile

Additional Organisation(s)

Involved external institutions

How to cite

APA:

Kaufmann, F., Maier, A., Schrauder, J., Roth, S., & Schmidt, M. (2024). Influence of Laser Beam Intensity Distribution on Keyhole Geometry and Process Stability Using Green Laser Radiation. In Francisco J. G. Silva, Raul D.S.G. Campilho, António B. Pereira (Eds.), Lecture Notes in Mechanical Engineering (pp. 216-227). Porto, PT: Springer Science and Business Media Deutschland GmbH.

MLA:

Kaufmann, Florian, et al. "Influence of Laser Beam Intensity Distribution on Keyhole Geometry and Process Stability Using Green Laser Radiation." Proceedings of the 32nd International Conference on Flexible Automation and Intelligent Manufacturing, FAIM 2023, Porto Ed. Francisco J. G. Silva, Raul D.S.G. Campilho, António B. Pereira, Springer Science and Business Media Deutschland GmbH, 2024. 216-227.

BibTeX: Download