Piezoelectric Materials

Prepared by:Ankit Soni ECE SEC-A

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Guided by:Lakhan Vaishnav

Piezoelectric materials

Crystals which acquire a charge when compressed, twisted or distorted and vice versa are said to be piezoelectric materials.

Working

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A pushing force:(aka: compression)

A pulling force:(aka: tension)

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Some Piezoelectric materials

•Quartz•Ammonium dihydrogen phosphate (ADP).•Lithium sulfate•Rochellesalt.•Antimony sulfoiodide•Piezoelectric ceramics Barium titanate (TB-1) •Calcium barium titanate (TBK-3).

Tennis Racquet

Piezoelectric materials is installed in tennis racquet to reduce the shock wave which Produces when player hits the ball.

APPLICATIONS

During the last decades, piezoelectric materials made huge progress in entering commercial massmarkets throughout all branches, where piezoelectrics are used as the basis materials for actuatorsas well as sensors.

Especially in two fields:1.Transportation2.Health Care

Transportation Insdustry

In last few years piezo electric materials have shown a tremendous growth in the field of piezoelectric materials.

Active Vibration Reduction

Piezoelectric patch actuators are used which will be attached to the surface of the oil pan. First numerical and experimental investigations on a laboratory demonstrator at LBF showed that significant vibration reduction could be achieved.

Miniaturized Power - Electronics

It is used for power amplification system. Currently, such miniaturized power amplifiers for piezos are under investigation by the University of Twente .

Wear Detection of Train Wheels

This is a wear detection system for train wheels. The idea is to detect the changes in the vibration behavior of the entire wheel caused by the surface changes on the rolling contact area.

Energy HarvestingEnergy harvesting describes the process of changing parasitic mechanical energy, for instance of a vibrating structure, into electrical energy. This energy is used for other purposes, for example for driving an electrical circuit or for storage in a battery or a large capacitor.

Health care Industry

It’s been said that health is wealth. Piezo-electric materials have given this industry new wings of technology.

X-ray MachineA new X-ray source, about the size of a stick of gum, could go into super-light, portable, all-purpose scanners in the future, its developers say.Some companies already sell handheld "guns" that aim X-rays for dentists, veterinarians and industrial inspectors. But the new X-ray source, made with crystals of so-called piezoelectric material, could make possible lighter scanners that use less electricity.

Any Questions