Effects of initial stresses on guided wave propagation in multilayered PZT-4/PZT-5A composites: A polynomial expansion approach

Enhanced ferroelectric and piezoelectric performance of (Ba0.85Ca0.15)(Zr0.1Ti0.9)O3 lead-free ceramics upon Ce and Sb co-doping

“…Piezoelectric materials are considered as one of the essential functional materials and have been widely applied in transducers, sensors and acoustic wave devices. [1][2][3] However, currently commercial piezoelectric materials contain a large amount of lead element, such as Pb(Zr 0.3 Ti 0.7 )O 3 (PZT) and 0.67Pb(Mg 1/3 Nb 2/3 )O 3 -0.33PbTiO 3 (PMNT), which intrinsically limited by their toxicity. 4,5 Therefore, lead-free piezoelectric materials are urgently required for the advocation of environmentally-friendly concepts.…”

Analysis of wave scattering on piezoelectric surface with flexoelectric effect

“…Yuan et al 33 used inhomogeneous wave approach to discuss the influences of rotation and initial stress on the wave scattering at interface between two pyroelectric half-planes. Effects of initial stress on wave propagation in multilayered piezoelectric structures have been investigated by Othmani et al 34,35 The present paper studies the reflection of plane QP waves at the surface of a pre-stressed rotating piezoelectric half-space considering flexoelectric effect. The reflection coefficients of the five types of reflected wave have been calculated using cramer's rule.…”

An analytical integration Legendre polynomial series approach for Lamb waves in fractional order thermoelastic multilayered plates

“…It can transform the differential equations into the eigenvalue equations and directly obtain the complex eigenvalues that represent the guided wave propagation and attenuation. Since proposed, the LPSA has been widely used in many structures, such as multilayered structures, 1,2 cylindrical structures, 3,4 gradient structures, 5 and so forth. Although the LPSA has an ability to deal with the multilayered structures, 1 the physical variables such as displacement, stress, and temperature are not consecutive between two layers when the material properties of two adjacent layers change significantly.…”