ABSTRACT

The role of porous piezoelectric materials is very crucial in modern days, especially in designing underwater object detection devices. Therefore, the present article deals with SH-wave propagation in a porous piezoelectric layer sandwiched between an upper mechanically bonded porous layer and lower mechanically and electrically bonded piezoelectric layer. Bonding parameters have been considered to describe the effect of electrical and mechanical imperfections on the interface. The effect of thickness ratio, electro-mechanical bonding parameters on phase velocity are studied extensively. The imperfections at interfaces reduces phase velocity of SH-wave. The influence is found significant when large imperfections persist at the interface.

摘要

多孔压电材料的作用在现代非常重要，尤其是在设计水下物体检测装置时。因此，本文处理夹在上机械结合的多孔层和下机械和电结合的压电层之间的多孔压电层中的SH波传播。已考虑结合参数来描述电气和机械缺陷对界面的影响。广泛研究了厚度比、机电结合参数对相速度的影响。界面处的缺陷降低了 SH 波的相速度。当大的缺陷在界面上持续存在时，这种影响是显着的。