An analytical study of propagation characteristic of Love wave in a layered structure comprising of a functionally graded piezo-poroelastic stratum with electroded upper boundary condition and a functionally graded piezo-poroelastic substrate having abrupt thickening at the common imperfect interface has been encapsulated in the present work which was not attempted before. Two distinct shapes of abrupt thickening are considered, viz. rectangular and parabolic. Dispersion equations are obtained using Fourier transformation and perturbation method and the results have been validated with classical cases. Numerical computations have been carried out for functionally graded piezo-poroelastic PZT-5H stratum and BaTiO₃ substrate. The effect of various influencing parameters, viz. abrupt thickness ratio, functional gradient parameters, mechanical imperfect bonding, and electrical imperfect bonding parameter on the phase velocity of Love wave has been illustrated graphically. The study may find its application in the field of Love wave sensors, actuators, health monitoring system, and other SAW devices.

对 Love 波在层状结构中传播特性的分析研究，该层状结构包括具有电极上边界条件的功能梯度压电多孔弹性层和在常见的不完美界面处具有突然增厚的功能梯度压电多孔弹性基板，已封装在本工作中。这是以前没有尝试过的。考虑了两种不同形状的突然增厚，即。矩形和抛物线。使用傅里叶变换和微扰方法获得了色散方程，并通过经典案例验证了结果。_{对功能梯度压孔弹性PZT-5H地层和BaTiO 3}进行了数值计算基质。各种影响参数的影响，即。以图形方式说明了 Love 波相速度的突变厚度比、功能梯度参数、机械不完美键合和电不完美键合参数。该研究可能会发现其在 Love 波传感器、执行器、健康监测系统和其他 SAW 设备领域的应用。