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Investigation of Laser Parameters in Silicon Pulsed Laser Conduction Welding

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Abstract

In this paper, laser welding of silicon in conduction mode is investigated numerically. In this study, the effects of laser beam characteristics on the welding have been studied. In order to model the welding process, heat conduction equation is solved numerically and laser beam energy is considered as a boundary condition. Time depended heat conduction equation is used in our calculations to model pulsed laser welding. Thermo-physical and optical properties of the material are considered to be temperature dependent in our calculations. Effects of spatial and temporal laser beam parameters such as laser beam spot size, laser beam quality, laser beam polarization, laser incident angle, laser pulse energy, laser pulse width, pulse repetition frequency and welding speed on the welding characteristics are assessed. The results show that how the temperature dependent thermo-physical and optical parameters of the material are important in laser welding modeling. Also the results show how the parameters of the laser beam influence the welding characteristics.

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Authors and Affiliations

  1. School of Physics, Iran University of Science and Technology, Narmak, Tehran, Iran

    Mahdi Shayganmanesh & Afsaneh Khoshnoud

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  1. Mahdi Shayganmanesh
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  2. Afsaneh Khoshnoud
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Correspondence to Mahdi Shayganmanesh.

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Shayganmanesh, M., Khoshnoud, A. Investigation of Laser Parameters in Silicon Pulsed Laser Conduction Welding. Lasers Manuf. Mater. Process. 3, 50–66 (2016). https://doi.org/10.1007/s40516-016-0022-y

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