Piezoelectric effect

a simple presentation for anybody to easily understand what is ppiezo electric effect and wat are its applications

1. Piezoelectric Effect By B SRI JYOTHSNA 15011D2003 JNTU, HYDERABAD Soft Skills Lab - Presentation

2. Piezoelectricity ???

3. Ability to generate an electric charge in response to applied mechanical stress. ‘Piezo’ derived from Greek word ‘piezein’ meaning “push”

4. Reversible i.e, converse of Piezoelectric effect

5. Mechanical force Electricity Piezoelectric effect Electricity Mechanical strain Converse of Piezoelectric effect

6. Piezoelectric Materials Crystals which acquire a charge when compressed, twisted or distorted and vice versa Quartz Silk Enamel Barium Titanate(BaTiO3)

7. Principle behind this effect ??

8. When a mechanical force like a vibration is applied on the material it polarizes. when the force is released flow of ions takes place and electric current flows through the crystal.

9. Applications

10. Converse of Piezoelectric effect is used in Quartz watches

11. To detect wear in train wheels by detecting the change in vibration behavior of the entire wheel by generating mode shapes

12. Gyms, dance floors etc can be laid with crystals below the floor or tiles. This energy can be used to power the equipment in the place.

13. Piezoelectric Microphone sound sensor sound waves bend the crystal creates a changing voltage.

14. Used in ultrasonic transducers medical ultrasound imaging Non Destructive Tests in constructions

15. Piezoelectricity is a source of “Green energy ” Flexible Piezo materials withstand large deformations Conclusion

16. Thank You!