Analysis of size dependency on Love-type wave propagation in a functionally graded piezoelectric smart material

Abstract

<jats:p> This study investigates Love-type wave propagation in a layered structure consisting of a functionally graded piezoelectric material (FGPEM) stratum followed by a semi-infinite couple-stress substrate exhibiting microstructural properties. Dispersion relations are obtained for electrically open and short conditions. Possible particular cases are discussed. The dispersion relation is reduced to the classical Love wave equation to validate the results. The influence of microstructural parameters, electromechanical coupling factor, thickness, functional gradedness and material parameters of the FGPEM stratum on the phase velocity of the Love-type wave has been scrutinized and illustrated graphically for electrically open and short conditions. The findings have meaningful practical application in the enhancement of efficiency and performance of sensors and transducers. </jats:p>

Theoretical solution for the axial vibration of functionally graded double-lap adhesive joints

“…To be more precise, the adhesive’s shear modulus is represented by a symmetric function G a ( x ) that depends on variable x . As recommended in several references [2, 4, 15] the adhesive is considered to be stiffest in the middle of the joint and softest at the edges (Figure 1).…”

“…Nowadays, there is a strong trend toward using functionally graded materials [4, 5]. They are mainly used to achieve a high strength-to-weight ratio.…”

Mechanism and prediction models for interfacial shear separation of claddings excited by Love waves

“…[7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25] The displacement solution of a single cladding structure excited by horizontal shear waves was derived by the integral transformation method, and it was found that the displacement magnitude depends on the excitation magnitude. [26][27][28][29][30][31][32] The freely propagating solution of horizontal shear waves in the multilayer cladding structure was studied by the global matrix method and the transfer matrix method. [33][34][35][36][37][38][39][40][41] But the derivation of the forced propagation solution excited by horizontal shear waves is complex and difficult, especially in the multilayer cladding structure, which is an exact solution and does not contain any unsolved constants.…”

Transient non-Fourier thermoelastic fracture analysis of a cracked orthotropic functionally graded strip

“…By the mixture of different material ingredients gradually over volume, functionally graded materials (FGMs), working as an advanced composite structural component, have gained popular applications in various industries, especially in the extremely high temperature environment [1–3]. Different from the traditional structural materials or laminated composite materials, FGMs were initially designed as engineering components to provide a high thermal resistance in the temperature of around 2000 K in the 1980s [4].…”