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A Model of Ultra-Short Pulsed Laser Ablation of Metal with Considering Plasma Shielding and Non-Fourier Effect

Author

Listed:
  • Sheng Tan

    (College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China)

  • Jianjun Wu

    (College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China)

  • Yu Zhang

    (College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China)

  • Moge Wang

    (College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China)

  • Yang Ou

    (College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China)

Abstract

In this paper, a non-Fourier heat conduction model of ultra-short pulsed laser ablation of metal is established that takes into account the effect of the heat source, laser heating of the target, the evaporation and phase explosion of target material, the formation and expansion of the plasma plume, and interaction of the plasma plume with the incoming laser. Temperature dependent optical and thermophysical properties are also considered in the model due to the properties of the target will change over a wide range during the ultra-short pulsed laser ablation process. The results show that the plasma shielding has a great influence on the process of ultra-short pulsed laser ablation, especially at higher laser fluence. The non-Fourier effect has a great influence on the temperature characteristics and ablation depth of the target. The ultra-short pulsed laser ablation can effectively reduce the heat affected zone compared to nanosecond pulsed laser ablation. The comparison between the simulation results and the experimental results in the literature shows that the model with the plasma shielding and the non-Fourier effect can simulate the ultra-short pulsed laser ablation process better.

Suggested Citation

  • Sheng Tan & Jianjun Wu & Yu Zhang & Moge Wang & Yang Ou, 2018. "A Model of Ultra-Short Pulsed Laser Ablation of Metal with Considering Plasma Shielding and Non-Fourier Effect," Energies, MDPI, vol. 11(11), pages 1-17, November.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:11:p:3163-:d:183026
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    References listed on IDEAS

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    1. Zhichao Liu & Fuda Ning & Weilong Cong & Qiuhong Jiang & Tao Li & Hongchao Zhang & Yingge Zhou, 2016. "Energy Consumption and Saving Analysis for Laser Engineered Net Shaping of Metal Powders," Energies, MDPI, vol. 9(10), pages 1-12, September.
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