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Purpose <p>Shear-horizontal (SH-) wave manipulation in layered smart composites is crucial for sensing, vibration mitigation, and subsurface detection technologies; however, the dominant mechanisms governing wave control in porous-piezoelectric systems remain insufficiently understood.</p> Methods <p>This study demonstrates that interfacial electromechanical coupling, rather than bulk material properties, is the primary mechanism&#xa0;controlling SH-wave phase velocity and dispersion in a multilayered structure composed of a piezoelectric substrate, an overlying&#xa0;porous-piezoelectric layer, and an ultra-thin dual electric membrane interface connected through an electrically induced spring. A&#xa0;coupled elastodynamic— electromechanical formulation is employed to derive the dispersion relation and evaluate parametric&#xa0;influences. Several limiting and particular cases are examined to validate the formulation and confirm consistency with established&#xa0;results.</p> Results <p>Numerical analysis reveals that the electromechanical interfacial stiffness exerts the strongest influence on wave speed by converting&#xa0;mechanical energy into electrical energy and modifying effective dynamic inertia. Mechanical interfacial compliance significantly&#xa0;enhances low-wavenumber sensitivity, whereas increased electrical stiffness improves propagation stability and elevates phase velocity.&#xa0;In contrast, variations in bulk elastic constants produce comparatively smaller effects. Membrane properties and thickness ratios further&#xa0;regulate energy confinement and dispersion behavior, confirming that SH-wave dynamics are predominantly interface-controlled.</p> Conclusion <p>These findings show that wave characteristics can be tuned through interface engineering rather than material substitution, supporting&#xa0;the design of SH-wave sensors, vibration control layers, energy harvesters, and subsurface detection systems.</p>

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Influence of Dual Electric Membranes Pairing with a Sandwiched Electrically Induced Spring Interface on SH-Wave Propagation in Smart Porous Composite

  • 期刊论文

  • 发表日期：

    2026年3月19日

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  • Kshitish Ch. Mistri,
  • Bikram Dholey,
  • Sumit Kumar Vishwakarma,
  • Amrita Das

摘要

Purpose

Shear-horizontal (SH-) wave manipulation in layered smart composites is crucial for sensing, vibration mitigation, and subsurface detection technologies; however, the dominant mechanisms governing wave control in porous-piezoelectric systems remain insufficiently understood.

Methods

This study demonstrates that interfacial electromechanical coupling, rather than bulk material properties, is the primary mechanism controlling SH-wave phase velocity and dispersion in a multilayered structure composed of a piezoelectric substrate, an overlying porous-piezoelectric layer, and an ultra-thin dual electric membrane interface connected through an electrically induced spring. A coupled elastodynamic— electromechanical formulation is employed to derive the dispersion relation and evaluate parametric influences. Several limiting and particular cases are examined to validate the formulation and confirm consistency with established results.

Results

Numerical analysis reveals that the electromechanical interfacial stiffness exerts the strongest influence on wave speed by converting mechanical energy into electrical energy and modifying effective dynamic inertia. Mechanical interfacial compliance significantly enhances low-wavenumber sensitivity, whereas increased electrical stiffness improves propagation stability and elevates phase velocity. In contrast, variations in bulk elastic constants produce comparatively smaller effects. Membrane properties and thickness ratios further regulate energy confinement and dispersion behavior, confirming that SH-wave dynamics are predominantly interface-controlled.

Conclusion

These findings show that wave characteristics can be tuned through interface engineering rather than material substitution, supporting the design of SH-wave sensors, vibration control layers, energy harvesters, and subsurface detection systems.