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Correlation between keyhole geometry and reflected laser light distribution in laser-based manufacturing

Published

Author(s)

David Deisenroth, Sergey Mekhontsev, Wenda Tan, Wenkang Huang

Abstract

This study investigated the correlation between the keyhole geometry and reflected laser light distribution during laser-based manufacturing processes. An "imaging dome" system was developed to capture the distribution of the reflected laser light on a registration dome during the process, and found that the reflected laser distribution varied significantly as the keyhole shape was changed by reducing the laser scanning speed. A numerical model was leveraged to understand the multiple reflections of laser rays within the keyholes of different geometries. The results demonstrated the potential of a novel approach for in-situ detection of keyhole shapes during laser-based manufacturing.
Citation
Manufacturing Letters
Volume
38

Keywords

Laser-based manufacturing, reflected laser light distribution, keyhole geometry, imaging dome, computational physics modeling.

Citation

Deisenroth, D. , Mekhontsev, S. , Tan, W. and Huang, W. (2023), Correlation between keyhole geometry and reflected laser light distribution in laser-based manufacturing, Manufacturing Letters, [online], https://doi.org/10.1016/j.mfglet.2023.09.002, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=936952 (Accessed June 17, 2024)

Issues

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Created October 2, 2023, Updated February 6, 2024