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<p>This paper investigates the propagation of two-dimensional thermoelastic waves in a semiconductor medium characterized by double porosity and subjected to pulsed laser excitation. The analysis is conducted within the frameworks of the Lord–Shulman (LS) and Green–Lindsay (GL) theories, which incorporate finite thermal wave speeds and relaxation effects. The governing equations describing the temperature, carrier density, and stress fields are analytically solved using the harmonic wave method. The study emphasizes the effects of time variation, thermoelastic coupling, and laser pulse intensity on the evolution of the dynamic fields. Three-dimensional graphical representations demonstrate the combined influence of these parameters on both thermal and mechanical responses. The findings show that an increase in the thermoelastic coupling parameter intensifies the interaction between thermal and elastic fields, while temporal variations and laser energy significantly modify wave amplitude and energy distribution. A comparative assessment of the CD, LS, and GL theories further clarifies the impact of relaxation times on thermoelastic wave propagation in double-porosity semiconductor materials.</p>

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Analysis of thermoelastic wave behavior in double porous structures induced by laser pulse heating

  • 期刊论文

  • 发表日期：

    2026年2月18日

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  • Imed Kedim,
  • Taoufik Moulahi,
  • Abdelaala Ahmed,
  • E. S. Elidy

摘要

This paper investigates the propagation of two-dimensional thermoelastic waves in a semiconductor medium characterized by double porosity and subjected to pulsed laser excitation. The analysis is conducted within the frameworks of the Lord–Shulman (LS) and Green–Lindsay (GL) theories, which incorporate finite thermal wave speeds and relaxation effects. The governing equations describing the temperature, carrier density, and stress fields are analytically solved using the harmonic wave method. The study emphasizes the effects of time variation, thermoelastic coupling, and laser pulse intensity on the evolution of the dynamic fields. Three-dimensional graphical representations demonstrate the combined influence of these parameters on both thermal and mechanical responses. The findings show that an increase in the thermoelastic coupling parameter intensifies the interaction between thermal and elastic fields, while temporal variations and laser energy significantly modify wave amplitude and energy distribution. A comparative assessment of the CD, LS, and GL theories further clarifies the impact of relaxation times on thermoelastic wave propagation in double-porosity semiconductor materials.