Semi-analytical solutions for vibration analysis of nonlocal piezoelectric Kirchhoff plates resting on viscoelastic foundation with arbitrary boundary conditions are derived by developing Galerkin strip distributed transfer function method. Based on the nonlocal elasticity theory for piezoelectric materials and Hamilton's principle, the governing equations of motion and boundary conditions are ...

e propose a new hybrid piezoelectric composite comprised of rmchair single-walled carbon nanotubes and piezoelectric fibers s reinforcements embedded in a conventional polymer matrix. ffective piezoelectric and elastic properties of this composite ave been determined by a micromechanical analysis. Values of he effective piezoelectric coefficient e31 of this composite that ccounts for the in-pla...

The study of piezoelectric material in the past was in T-Domain form; however, no one has studied piezoelectric material in the S-Domain form. This paper will present the piezoelectric material in the transfer function or S-Domain model. S-Domain is a well known mathematical model, used for analyzing the stability of the material and determining the stability limits. By using S-Domain in testin...

Lattice structures are presented with a piezoelectric sensitivity, d, much larger in magnitude than that of material comprising the lattice ribs. Large sensitivity is achieved by using piezoelectric bimorph elements as ribs; these bend in response to electric input, giving rise to a much larger displacement than for axial elements. Complex electrical connectivity is helpful but not necessary; s...

We have examined a piezoelectric unimorph cantilever (PUC) with unequal piezoelectric and nonpiezoelectric lengths for vibration energy harvesting theoretically by extending the analysis of a PUC with equal piezoelectric and nonpiezoelectric lengths. The theoretical approach was validated by experiments. A case study showed that for a fixed vibration frequency, the maximum open-circuit induced ...

The Pb(Zr, Ti)O3 (PZT) based micro electro mechanical systems are presented. Piezoelectric effect, basic piezoelectric equations are explained. Lost silicon mold process for PZT microstructures, PZT thin film deposition, and PZT based piezoelectric micromachined switch device are discussed.

In this study, using the non-local elasticity theory, the buckling and vibration analysis of triple- walled ZnO piezoelectric Timoshenko beam on elastic Pasternak foundation is analytically investigated under magneto-electro-thermo-mechanical loadings. Using the Timoshenko beam free body diagram, the equilibrium equation of Timoshenko nano-beam model is obtained and solved by Navier’s method fo...

Title of Document: ORIENTATION DEPENDENCE OF THE PIEZOELECTRIC PROPERTIES OF EPITAXIAL FERROELECTRIC THIN FILMS Jun Ouyang, Doctor of Philosophy, 2005 Directed By: Professor Alexander. L. Roytburd Dept. of Materials Science and Engineering There are both intrinsic piezoelectric response and extrinsic piezoelectric response in ferroelectric materials. The intrinsic piezoelectric response is due ...

in this paper, design and construction of a tactile sensor for measuring contact-force is presented. mechanism of measuring contact-force in this tactile sensor is based on impedance changing of piezoelectric crystal and voltage of different points in circuit as a result of applying force on the crystal. by considering a specific point in the circuit and recording the changes of its voltage, ma...

Results of electro-thermo-elastic analysis of a functionally graded thick-walled spherical shell made of temperature dependent materials are presented in this article. All material properties are assumed temperature-dependent and also are graded along the thickness direction based on power function. Temperature dependency is accounted for all material properties including, thermal, mechanical a...