Ultrafast lasers of subpicosecond pulse duration have the potential for laser microwelding of micronscale fusion zone. Due to the extremely short pulse duration, laser-metal interaction involving ultrafast laser pulses should be analyzed using the two-temperature model. In this study, the two-temperature model is analyzed using ABAQUS to study the feasibility of laser microwelding with ultrafast laser. A material model is constructed using material properties and the subsurface boiling model. The model is validated using experimental results from the literature. Laser processing parameters of repetition rate, pulse duration, and focal radius are then investigated, in terms of molten pool generated in the material and requirements on those parameters for laser microwelding using ultrafast lasers are discussed.
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e-mail: dongkyun@umich.
e-mail: asibu@umich.edu
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December 2008
Research Papers
Numerical Analysis on the Feasibility of Laser Microwelding of Metals by Femtosecond Laser Pulses Using ABAQUS
Dongkyun Lee,
Dongkyun Lee
Department of Mechanical Engineering,
e-mail: dongkyun@umich.
The University of Michigan
, Ann Arbor, MI 48105-2125
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Elijah Kannatey-Asibu, Jr.
Elijah Kannatey-Asibu, Jr.
Department of Mechanical Engineering,
e-mail: asibu@umich.edu
The University of Michigan
, Ann Arbor, MI 48105-2125
Search for other works by this author on:
Dongkyun Lee
Department of Mechanical Engineering,
The University of Michigan
, Ann Arbor, MI 48105-2125e-mail: dongkyun@umich.
Elijah Kannatey-Asibu, Jr.
Department of Mechanical Engineering,
The University of Michigan
, Ann Arbor, MI 48105-2125e-mail: asibu@umich.edu
J. Manuf. Sci. Eng. Dec 2008, 130(6): 061014 (12 pages)
Published Online: November 19, 2008
Article history
Received:
October 3, 2007
Revised:
August 22, 2008
Published:
November 19, 2008
Citation
Lee, D., and Kannatey-Asibu, E., Jr. (November 19, 2008). "Numerical Analysis on the Feasibility of Laser Microwelding of Metals by Femtosecond Laser Pulses Using ABAQUS." ASME. J. Manuf. Sci. Eng. December 2008; 130(6): 061014. https://doi.org/10.1115/1.3006321
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