This paper discusses the development of a model of laser transmission welding that can be used as an analytical design tool. Currently the majority of laser transmission welding (LTW) applications rely on trial and error to develop appropriate process parameters. A more rigorous design approach is not commonly used primarily due to the complexity of laser welding, where small material or process parameter changes can greatly affect the weld quality. The model developed in this paper also enables optimizing operating parameters while providing monetary and time saving benefits. The model is created from first principles of heat transfer and utilizes contact conduction that is a function of temperature and pressure, Gaussian laser distribution, and many material properties that vary with temperature including the absorption coefficient. The model is demonstrated through a design example of a joint between two polyvinyl chloride parts. The model is then validated with samples welded with a diode laser system using the operating parameters developed in a design example. Using the weld width as the primary output, the error between the model and the experimental results is 4.3%, demonstrating the accuracy of the model.
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e-mail: vandeven@me.umn.edu
e-mail: agerdman@me.umn.edu
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October 2007
Research Papers
Laser Transmission Welding of Thermoplastics—Part I: Temperature and Pressure Modeling
James D. Van de Ven,
James D. Van de Ven
Mechanical Engineering Department,
e-mail: vandeven@me.umn.edu
University of Minnesota
, 111 Church Street SE, Minneapolis, MN 55455
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Arthur G. Erdman
Arthur G. Erdman
Mechanical Engineering Department,
e-mail: agerdman@me.umn.edu
University of Minnesota
, 111 Church Street SE, Minneapolis, MN 55455
Search for other works by this author on:
James D. Van de Ven
Mechanical Engineering Department,
University of Minnesota
, 111 Church Street SE, Minneapolis, MN 55455e-mail: vandeven@me.umn.edu
Arthur G. Erdman
Mechanical Engineering Department,
University of Minnesota
, 111 Church Street SE, Minneapolis, MN 55455e-mail: agerdman@me.umn.edu
J. Manuf. Sci. Eng. Oct 2007, 129(5): 849-858 (10 pages)
Published Online: April 17, 2007
Article history
Received:
May 31, 2006
Revised:
April 17, 2007
Citation
Van de Ven, J. D., and Erdman, A. G. (April 17, 2007). "Laser Transmission Welding of Thermoplastics—Part I: Temperature and Pressure Modeling." ASME. J. Manuf. Sci. Eng. October 2007; 129(5): 849–858. https://doi.org/10.1115/1.2752527
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