الفهرس 
Chapter one : IntroductionOnly 14 pages are availabe for public view
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Abstract
The aim of this thesis can be divided into two main part firstly, develop reliable algorithm model for predicting the electromechanical dynamic system of cantilever beams used for piezoelectric energy harvesting.
Analytically develops the response of linear piezoelectric energy harvesters to harmonic oscillation. The method is performed using the Z-transformation technique applied to the Laplace model .The response of nonlinear system to harmonic oscillation is calculated by finite difference method.
Secondly, synthesized of Lead zirconate titanate (PZT) ceramics with the composition of Pb(Zr0.52Ti0.48)O3 by a sol–gel method. The prepared PZT discs are calcinated at different temperatures 950°C and1050 °C for 2h.
Using X-ray diffraction (XRD) data, the formation of phase fractions is described using the diffraction system (Maud) for material analysis.The microstructural characteristics and weight percentages of the PZT ceramics tetragonal and rhomboedral phases are determined. The effect of tetragonal and rhomboedral weight fractions on the mechanical and dielectric properties are measured. Poisson’s ratio, Young’s modulus and bulk modulus, and microhardness are evaluated by the ultrasonic pulse method.
Piezoelectric properties are calculated using an LCR meter using the resonance and antiresonance process. The mechanical, dielectrical and electromechanical coupling properties of ceramic systems are controlled by weight fractions phases and microstructure of PZT ceramics. The PZT discs are attached to a cantilever metallic beam near its clamped end. External excitations applied at the base set the beam in motion and produced broad strains at the clamped end, thereby straining and producing a voltage difference across the piezoelectric disc. This electrical potential is then calculated by designing the proper circuitry. The experimental output voltage is compared to theoretical value calculated by Z-transform technique.
This thesis is written such that , chapter one is concerned with introduction about Vibration-based energy harvester. Also, a brief literature review about piezoelectric energy harvester is included. Chapter two provides basic details on piezoelectric effect and piezoelectric material. This chapter provides the definition of the which piezoelectric energy scavenger configuration. Chapter three discusses the development of theoretical measures of power generation from piezoelectric energy harvester . Chapter four describes the synthesis process of Lead zirconate titanate (PZT) nanopowders, as well as ceramics. Also, this chapter includes measurements of mechanical, dielectric and piezoelectric properties of PZT ceramics . Experimental results about the output voltage of a piezoelectric power harvester includes in this chapter. Chapter five introduces brief conclusion about this thesis.