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Modelling of the solid–liquid interface during laser processing using an inverse methodology

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Abstract

This study presents a methodology for estimating the melt depth during laser processing of solid materials. The determination of the melt depth is treated as an inverse heat conduction problem, which includes the solid and liquid phases. The conjugate gradient method is applied to treat the inverse problem using the available temperature measurements. Without the inverse methodology the melt depth is very difficult to obtain with precision. The proposed method can also be applied during microthermal machining to determine the location of the solid–liquid interface and the temperature distributions of the two phases by using scanning thermal microscopy.

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Authors and Affiliations

  1. Department of Mechanical Engineering, Kun Shan University of Technology, 710, Tainan, Taiwan

    W.-J. Chang

  2. Department of Mechanical Engineering, Southern Taiwan University of Technology, 710, Tainan, Taiwan

    T.-H. Fang

Authors
  1. W.-J. Chang
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  2. T.-H. Fang
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Correspondence to W.-J. Chang.

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Chang, WJ., Fang, TH. Modelling of the solid–liquid interface during laser processing using an inverse methodology. Appl. Phys. B 80, 373–376 (2005). https://doi.org/10.1007/s00340-005-1740-6

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  • DOI: https://doi.org/10.1007/s00340-005-1740-6

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