For all processes in industry where liquids are intermediate or end products, there is a demand for online measurements of physical liquid properties, like density, viscosity and speed of sound. The continuous monitoring of those quantities is important for quality control and for enhancing productivity. In this paper layered resonant piezoelectric sensors for liquids are investigated and it is...

ABSTRACT Numerous engineering applications exist for the piezoelectric effect, which results from electromechanical coupling between electrical and mechanical fields. In-plane vibrations of plates’ resonance frequencies associated mode shapes have been thoroughly investigated. However, analytical solutions in-plane-dominated thick circular plates are limited. In this paper, higher-order plate t...

in this paper, a nonlinear free vibration analysis of thin annular functionally graded (fg) plate integrated with two uniformly distributed actuator layers made of piezoelectric (pzt4) material on the top and bottom surfaces of the annular fg plate is presented based on kirchhoff plate theory. the material properties of the fgm core plate are assumed to be graded in the thickness direction acco...

Piezoelectric quasicrystals have attracted extensive attention due to their unique physical and mechanical properties. This paper studies the dynamic response of multilayered two-dimensional decagonal piezoelectric quasicrystal sector plates with imperfect interfaces. Based on linear elasticity, partial differential state equations along thickness direction are derived by using state-space meth...

|For crystal resonators, it is always desirable to calculate the electric properties accurately for application purposes. As an extension of the Mindlin plate theory based nite element analysis of crystal resonators, a new theory for the electroded plates is derived and the piezoelectrically forced vibrations are formulated and implemented in this paper in a manner similar to our previous work....

The nonlocal response functions to quantum fluctuations are used find asymptotic expressions for the Casimir free energy and entropy at an arbitrarily low temperature in configuration of two parallel metallic plates. It is shown that by introducing alternative off-the-mass-shell Lifshitz theory brought into agreement with requirements thermodynamics. According our results, calculated using func...