Design and analysis of a piezoelectric ultrasonic transducer for distance measurement

Author

Gui, Zhilun ; Hu, Xiaobing ; Li, Longtu

Author_Institution

Dept. of Mater. Sci. & Eng., State Key Lab. of New Ceramics & Fine Process., Beijing, China

fYear

2002

fDate

28 May-1 June 2002

Firstpage

335

Lastpage

338

Abstract

This paper describes a kind of bimorph flexural piezoelectric ultrasonic transducer (abbreviated as PUT) for distance measurement. A bimorph flexural PUT based on low-sintering piezoelectric ceramics PMN-PNN-PZT, which have high piezoelectric constant (d₃₃>680pC/N), high electromechanical coupling factor (K_p=0.70∼0.73), was introduced. The numerical and finite element analysis (abbreviated as FEA) of its resonant modes were investigated. An advanced laser scanning vibrometer has been used to measure the displacement amplitude profiles of their resonant mode. It has greatly helped us to design and analyze transducers.

Keywords

distance measurement; finite element analysis; frequency response; piezoceramics; piezoelectric transducers; ultrasonic transducers; PbMgO3NbO3-PbJk-PbZrO3TiO3; bimorph flexural transducer; displacement amplitude profiles; distance measurement; equivalent model; finite element analysis; frequency response; high electromechanical coupling factor; high piezoelectric constant; low-sintering piezoelectric ceramics; out-of-plane vibration displacement distributions; piezoelectric ultrasonic transducer; resonant modes; Acoustic transducers; Ceramics; Distance measurement; Equations; Finite element methods; Piezoelectric transducers; Resonance; Resonant frequency; Ultrasonic transducers; Vibrations;

fLanguage

English

Publisher

ieee

Conference_Titel

Applications of Ferroelectrics, 2002. ISAF 2002. Proceedings of the 13th IEEE International Symposium on

ISSN

1099-4734

Print_ISBN

0-7803-7414-2

Type

conf

DOI

10.1109/ISAF.2002.1195937

Filename

1195937