Torsional wave propagation in a circumferentially poled piezoelectric cylindrical transducer with unattached electrodes

Author

Chun Li Zhang ; Chen, Wei Qiu

Author_Institution

Dept. of Civil Eng., Zhejiang Univ., Hangzhou, China

Volume

57

Issue

5

fYear

2010

fDate

5/1/2010 12:00:00 AM

Firstpage

1230

Lastpage

1236

Abstract

The present study is devoted to the propagation of torsional waves in a circumferentially poled piezoelectric hollow cylinder with air gaps between the cylinder surfaces and two electrodes. The state space method is employed to obtain a transfer relation between the state variables at the inner and outer surfaces of the hollow cylinder. The air gaps are treated as the free space. The characteristic equations are derived by taking into account the boundary and continuity conditions. Numerical examples clearly show the effect of gaps on the wave propagation in the piezoelectric hollow cylinder.

Keywords

air gaps; elastic waves; electrodes; piezoelectric materials; piezoelectric transducers; shapes (structures); wave propagation; air gaps; boundary conditions; continuity conditions; cylinder surfaces; gap effect; piezoelectric cylindrical transducer; piezoelectric hollow cylinder; state space method; state variables; torsional wave propagation; unattached electrodes; Air gaps; Electrodes; Equations; Piezoelectric transducers; State-space methods; Surface treatment; Surface waves;

fLanguage

English

Journal_Title

Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on

Publisher

ieee

ISSN

0885-3010

Type

jour

DOI

10.1109/TUFFC.2010.1536

Filename

5456273