Title :
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
fDate :
28 May-1 June 2002
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 (Kp=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;
Conference_Titel :
Applications of Ferroelectrics, 2002. ISAF 2002. Proceedings of the 13th IEEE International Symposium on
Print_ISBN :
0-7803-7414-2
DOI :
10.1109/ISAF.2002.1195937
