Abstract The main intention of this research work is to carry out an investigation regarding the mechanical and electrical characteristics of shear wave propagation in a porous piezoelectric material (PPEM) bounded by fiber-reinforced medium (FRM) and elastic half-space. The interface between two different media has been considered mechanically imperfect. The mechanical displacement and electric potential are obtained for respective medium by solving coupled electromechanical field equations. After that, the required expression of dispersion has been established using the relevant boundary conditions. For the purpose of validation, the obtained result is reduced to fairly match with the classical Love wave equation in an isotropic elastic layer and substrate (i.e., in the absence of upper surface, piezoelectricity, porosity, imperfection parameter) For the propose of numerical calculation, four sets of porous piezoelectric materials are considered namely, PZT-1, PZT-5H, PZT-7 and BaTiO3. Notable effects of various parameters involved in proposed structure such as piezoelectric, dielectric, reinforcement and interfacial imperfect on phase velocity with respect to frequency have been observed. In this regard, the numerical computation and graphical demonstration have been carried out. Moreover, first three different modes of SH-wave have also been reported.

中文翻译：

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多孔压电复合材料棒中弹性波的界面缺陷和机电特性分析

摘要 本研究工作的主要目的是研究剪切波在以纤维增强介质 (FRM) 和弹性半空间为边界的多孔压电材料 (PPEM) 中传播的机械和电气特性。两种不同介质之间的界面被认为是机械上不完美的。通过求解耦合机电场方程，获得各个介质的机械位移和电势。之后，使用相关边界条件建立了所需的色散表达式。为了验证的目的，将所得结果简化为与各向同性弹性层和基底中的经典洛夫波动方程相当匹配（即，在没有上表面、压电性、孔隙率、缺陷参数）为了数值计算的建议，考虑了四组多孔压电材料，即PZT-1、PZT-5H、PZT-7和BaTiO3。已经观察到所提出结构中涉及的各种参数（例如压电、介电、增强和界面缺陷）对相对于频率的相速度的显着影响。对此，进行了数值计算和图解论证。此外，还报道了前三种不同模式的 SH 波。已经观察到相速度相对于频率的增强和界面缺陷。对此，进行了数值计算和图解论证。此外，还报道了前三种不同模式的 SH 波。已经观察到相速度相对于频率的增强和界面缺陷。对此，进行了数值计算和图解论证。此外，还报道了前三种不同模式的 SH 波。