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<p>The use of expansion chamber phononic crystals is proposed in this study to address pressure pulsation within 1000 Hz in water-jet guided laser (WJGL) hydraulic systems. The electro-hydraulic analogue method was employed to derive the transfer matrix of the unit cell, which was then verified experimentally. The results indicate that the peak size of the overall local resonance bandgap within the 1000 Hz range is controlled by the lattice constant, extended-tube diameter and loss tangent. Meanwhile, low-frequency attenuation (0–500 Hz) can be achieved by the periodic pipe structure while a compact size is maintained by reducing the modulus of viscoelastic materials. This finding provides a viable approach to miniaturising and integrating the fluid supplying systems in WJGL.</p>

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Acoustic propagation properties of expansion chamber phononic crystals for water jet guided lasers

  • 期刊论文

  • 发表日期：

    2026年1月15日

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  • Fan Yang,
  • ChaoZhong Meng,
  • YuQiang Wang,
  • HongJie Fan,
  • Jiaxin Yu

摘要

The use of expansion chamber phononic crystals is proposed in this study to address pressure pulsation within 1000 Hz in water-jet guided laser (WJGL) hydraulic systems. The electro-hydraulic analogue method was employed to derive the transfer matrix of the unit cell, which was then verified experimentally. The results indicate that the peak size of the overall local resonance bandgap within the 1000 Hz range is controlled by the lattice constant, extended-tube diameter and loss tangent. Meanwhile, low-frequency attenuation (0–500 Hz) can be achieved by the periodic pipe structure while a compact size is maintained by reducing the modulus of viscoelastic materials. This finding provides a viable approach to miniaturising and integrating the fluid supplying systems in WJGL.