Vibration characteristics of a discal piezoelectric transducer with spiral interdigitated electrodes

Chengliang Pan; Wei-Hsin Liao; Yongbin Liu; Zhihua Feng

doi:10.1117/12.2046196

9 March 2014 Vibration characteristics of a discal piezoelectric transducer with spiral interdigitated electrodes

Chengliang Pan, Wei-Hsin Liao, Yongbin Liu, Zhihua Feng

Proceedings Volume 9057, Active and Passive Smart Structures and Integrated Systems 2014; 90571A (2014) https://doi.org/10.1117/12.2046196
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2014, San Diego, California, United States

Abstract

Torsional vibrations of circular tubes, rods, rings, and disks are widely used as operation modes of acoustic wave transducers in various piezoelectric devices. In this paper, a piezoelectric disk with spiral interdigitated electrodes is proposed to generate in-plane torsion in a simple and effective manner. Design and working principle of the torsional transducer are introduced. Vibration characteristics of the transducer with a constant spiral angle are studied. A simplified model is established to investigate the basic dynamic characteristics of torsional vibration accompanying with radial vibration. Electric admittance, resonant frequencies, and mode shapes with different boundary conditions are calculated. Resonant frequencies as functions of several structural parameters are discussed.

Citation Download Citation

Chengliang Pan, Wei-Hsin Liao, Yongbin Liu, and Zhihua Feng "Vibration characteristics of a discal piezoelectric transducer with spiral interdigitated electrodes", Proc. SPIE 9057, Active and Passive Smart Structures and Integrated Systems 2014, 90571A (9 March 2014); https://doi.org/10.1117/12.2046196

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