Effects of phase changes on weld pool shape in laser welding

    Authors

    W. Pecharapa;A. Kar

    Comments

    Authors: contact us about adding a copy of your work at STARS@ucf.edu

    Abbreviated Journal Title

    J. Phys. D-Appl. Phys.

    Keywords

    MODEL; BEAM; Physics, Applied

    Abstract

    A mathematical model is developed to relate the weld depth and width to the laser parameters. The model is based on the Stefan condition for quasi-steady state laser welding. Simple expressions are obtained for the shapes of the solid-liquid and liquid-vapour interfaces. They are found as functions of the laser irradiance, welding speed, absorptivity and thermal diffusivity. Simple expressions for the temperature distributions in the liquid and solid phases are also presented. The results for the weld depths and widths and the temperature distributions in the workpiece are illustrated for various laser intensities and welding speeds. The predictions of this simple model are found to compare well with experimental data and other previous models.

    Journal Title

    Journal of Physics D-Applied Physics

    Volume

    30

    Issue/Number

    24

    Publication Date

    1-1-1997

    Document Type

    Article

    Language

    English

    First Page

    3322

    Last Page

    3329

    WOS Identifier

    WOS:000071532600010

    ISSN

    0022-3727

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