Peculiarities of surface acoustic waves,propagation in structures with functionally graded piezoelectric materials,coating from different ceramics on the basis of PZT  

作　　者：T.I.Belyankova E.I.Vorovich V.V.Kalinchuk O.M.Tukodova 

机构地区：[1]Department of Mechanics,Mathematics and Nanotechnology Southern Scientific Center of RAS 41 Chekhov Avenue,344006 Rostov-on-Don,Russia [2]Heterogeneous Structure Laboratory Southern Federal University 105 Bolshaya Sadovaya Street,344006 Rostov-on-Don,Russia [3]Department of Applied Mathematics Don State Technical University 1 Gagarin Square,344010 Rostov-on-Don,Russia

出　　处：《Journal of Advanced Dielectrics》2020年第1期116-128,共13页先进电介质学报（英文）

基　　金：This work was performed with a financial support of the Ministry of Science and Higher Education of the Russian Federation(project SSC-RAS N 01201354242);Russian Foundation of Basic Research(Grant No.19-08-01051).

摘　　要：A model of a piezoelectric structure with an inhomogeneous coating is considered.The structure is a homogeneous half-space made of PZT-5H ferroelectric ceramics with a functionally graded coating.The properties of coating vary continuously in thickness from parameters of one material to parameters of another material in a continuously nonmonotonic or piecewise-continuous manner.As coating materials,various combinations of ceramics of different stiffness based on PZT are considered.Using the example of the problem of the propagation of sh-waves in a piezoelectric structure,we studied the influence of the ratio of the physical parameters of the coating materials,the localization region,and the size of the transition zone of one material to another on the propagation features of surface acoustic waves(SAWs)and the structure of the wave field.

关 键 词：Piezoelectric structure functionally graded piezoelectric material(FGPM) surface acoustic waves(SAW) Bluestein-Gulyaev wave(BGW) 

分 类 号：TG1[金属学及工艺—金属学]