A mathematical model has been proposed for the analytical study of the propagation of Love-type wave in an initially stressed functionally graded piezoelectric material (FGPM) layer overlying an orthotropic fluid-saturated porous half-space. The expression of dispersion equation is derived in closed form for both electrically open and electrically short conditions. The impact of various affecting parameters viz. wave number, gradient parameter, tensile initial stress on the dispersion curve of Love-type wave has been revealed by means of graphical illustrations. Some remarkable observation has been made through numerical computation for different piezoelectric ceramics of BaTiO${}_3$, PZT-4 and PZT-5A, respectively. The outcomes of the present study are momentous for both theoretical and practical implication for the surface acoustic wave (SAW) devices.

已经提出了一个数学模型，用于分析研究 Love 型波在覆盖正交各向异性流体饱和多孔半空间的初始应力功能梯度压电材料 (FGPM) 层中的传播。对于电开路和电短路条件，色散方程的表达式都是以闭合形式导出的。各种影响参数的影响，即。通过图解的方式揭示了Love型波频散曲线上的波数、梯度参数、拉伸初始应力。通过数值计算对不同的 BaTiO 压电陶瓷进行了一些显着的观察${}_3$、PZT-4 和 PZT-5A 分别。本研究的结果对于表面声波 (SAW) 器件的理论和实际意义都具有重要意义。