IJERT-Development and Performance Evaluation of Piezoelectric-Polymer based Composite materials for Automatic Sensing (original) (raw)
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The coming era of world has moved to an exceptional leading contest of innovations and inspiration. In this paper, an attempt has been made to propose the existence and need of piezoelectric materials in the day to day technology, in order to secure the outstanding wasted energy, which can be easily stored and can be utilized in some useful work. There is a lot of mechanical energy which is produced in millions of works ranging from snores of sleep to the vibrations of a jet or rocket. These vibrational energies can be easily transformed to another form and can be utilized further with the help of these piezoelectric materials. This paper contains some of the modes and methods of working field of piezoelectric materials.
Piezoelectric material characterization by acoustic methods
Springer Proceedings in Physics, 2009
Two characterization methods of piezoelectric materials based on acoustic measurements are presented. Their main objective is to identify the entire set of electromechanical constants of piezoelectric materials from a single sample. In order to characterize new materials like single-crystals with small dimensions, the first section of the paper presents an identification protocol based on the study of the resonance spectra of parallelepipeds. The second characterization method is performed by means of the measurement of the transmission coefficients of plane waves propagating through an immersed plate. It is suitable for the determination of the properties of bulk piezoelectric ceramics.
Chap9-PiezoelectricCompositeMaterials.pdf
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Piezocomposites composed of a piezoelectric ceramic and a polymer are promising materials because of their excellent tailorable properties. The geometry for two-phase composites can be classified according to the connectivity of each phase (1-, 2-, or 3dimensionally) into 10 structures. In particular, a 1-3 piezocomposite (PZT-rod/polymer-matrix composite) is considered most useful. The advantages of this composite are high coupling factors, low acoustic impedance, good matching to water or human tissue, mechanical flexibility, and broad bandwidth in combination with a low mechanical quality factor. Piezoelectric composite materials are especially useful for underwater sonar and medical diagnostic ultrasonic transducer applications. Other types of composites based on piezoelectric ceramics are also introduced in this chapter. Piezoelectric passive dampers comprise a piezoelectric ceramic particle, polymer, and a carbon black, which suppress the noise vibration more effectively than traditional rubbers. A composite with a magnetostrictive ceramic and a piezoelectric ceramic produces an intriguing product effect-the magnetoelectric effect in which an electric field is produced in the material in response to an applied magnetic field.
Journal of Electrical Engineering and Technology, 2017
Piezoelectricity is the capability of a piezoelectric material to change mechanical energy into electrical energy. The determination of electrical and mechanical properties plays a significant role in characterizing the piezoelectric material. The energy losses characteristics of piezoelectric material can be described by mechanical quality factor. In this paper, the output voltage and mechanical quality factor of Lead Zirconate Titanate (PZT-4A) piezoelectric material is determined under various resistance and loading conditions by using the test setup. The commercial FEM software ABAQUS is used to analyze the performance of piezoelectric material under static loading conditions. It is observed that these properties affect the performance of a material particularly in the designing of smart structures. The experimental results are partially compared to the simulation values.
Smart mechanical transducers: a comparative study of piezoelectric materials
Fifth European Conference on Smart Structures and Materials, 2000
A comparative study of piezoelectric materials is used to measure the angular acceleration with a mechanical transducer. The piezoelectric materials used in this transducer were either a pre-polarised PVDF film, a pre-polarised PTCa plate, a pre-polarised PZT plate or a polymer/ceramic piezoelectric composite films of (PTCa:P(VDF/TrFE) 50:50vol%). The transducer consists of a circular plate with two masses connected mechanically and electrically between them. Between the masses and the plate (on each side of it) is glued a piece of piezoelectric material metalized and polarized. The main advantages of this type of transducers are their low cost compared with other sensors and that there are no moving parts. All the experimental results are in good agreement with the theoretical ones, however the best results are obtained when a PZT transducer is used.
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2010
Introduction: bulk and thin film materials 441 13.2 Fundamentals of thin film deposition 443 13.3 Deposition of PZT-based thin films 453 13.4 Dielectric and piezoelectric properties of PZT-based thin films 458 13.5 PZT-based thin films for micro-electromechanical systems (MEMS) 466
A Review on PZT-Polymer Composites: Dielectric and Piezoelectric Properties
Ferroelectric materials exhibit piezoelectric natures. In this work, PZT is selected as the prime component and the polymers which exhibit few piezoelectric properties are selected. This paper reviews for the different polymers like PVDF, PVC, PU, P(VDFTrFE) and Polyester resin. The composite obtained by the individual polymer with PZT is used for transducer applications and accelerometers. The various methods selected for the composites have been reviewed as reported from literatures. The thorough study on the composite revealed that volume fraction, temperature, particle size of PZT affects the dielectric and piezoelectric properties. There is an increase in the dielectric properties and piezoelectric properties when the parameters like volume fraction, temperature, particle size increase in their respective dimensions. Keywords: Ferroelectric, polymers, accelerometer, dielectric, piezoelectric properties.
Introduction to Piezoelectric Actuators and Transducers
2003
Certain materials produce electric charges on their surfaces as a consequence of applying mechanical stress. The induced charges are proportional to the mechanical stress. This is called the direct piezoelectric effect and was discovered in quartz by Piere and Jacques Curie in 1880. Materials showing this phenomenon also conversely have a geometric strain proportional to an applied electric field. This is the converse piezoelectric effect. The root of the word "piezo" means "pressure"; hence the original meaning of the word piezoelectricity implied "pressure electricity."