Restricted accessResearch articleFirst published online 2025
Mathematical analysis of Rayleigh-type wave propagation in a thermo-porous piezoelectric composite structure with interfacial imperfection employing dual-phase-lag model
This study delves into Rayleigh-type wave propagation within a thermo-porous piezoelectric half-space topped by a porous piezoelectric layer with an imperfect interface. To model the thermoelastic behaviour, the cutting-edge dual-phase-lag approach is employed. Using normal mode analysis, the analytical expressions are derived to describe the key physical quantities in this system, including temperature gradient, mechanical displacements, and stress and strain tensors. Several interface conditions are investigated, such as isothermal or thermally insulated interfaces, along with piezoelectrically open or short circuits. Corresponding dispersion relations are obtained for each case, allowing a comprehensive understanding of wave propagation in these complex structures. The study then delves into numerical simulations to visualize the impact of various parameters on wave propagation, including porosity levels, bonding strength at the interface, piezoelectric and dielectric constants. The results obtained may provide valuable information on the design and optimization of thermo-porous piezoelectric devices for applications ranging from sensors to energy harvesting.
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