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Related Experiment Video

Updated: Jul 14, 2026

Fabrication and Characterization of Thickness Mode Piezoelectric Devices for Atomization and Acoustofluidics
10:39

Fabrication and Characterization of Thickness Mode Piezoelectric Devices for Atomization and Acoustofluidics

Published on: August 5, 2020

Broadband multimode baffled piezoelectric cylindrical shell transducers.

Tetsuro Oishi1, Boris Aronov, David A Brown

  • 1Acoustic Research Laboratory, Advanced Technology and Manufacturing Center, and Department of Electrical and Computer Engineering, University of Massachusetts Dartmouth, 151 Martine Street, Fall River, Massachusetts 02723-1502, USA.

The Journal of the Acoustical Society of America
|June 8, 2007
PubMed
Summary

Directional underwater acoustic transducers using piezoelectric cylindrical shells can be improved. Exciting electrodes 90 degrees out-of-phase broadens frequency response and maintains beamwidth for better performance.

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Area of Science:

  • Acoustics
  • Materials Science
  • Electrical Engineering

Background:

  • Piezoelectric cylindrical shell transducers are used in underwater acoustics.
  • Directionality and bandwidth are key performance metrics for these transducers.

Purpose of the Study:

  • To investigate methods for enhancing directionality and operational bandwidth of hollow piezoelectric cylindrical shell transducers.
  • To analyze the effects of acoustical baffles and multi-modal resonance on transducer performance.

Main Methods:

  • Theoretical and experimental investigation of circumferentially baffled piezoelectric cylindrical shell transducers.
  • Analysis of frequency responses and directivity patterns under varying electrode energizing conditions.
  • Focus on zero and one modes of extensional vibration.

Main Results:

  • Directionality can be achieved using acoustical baffles.
  • Broader frequency response and nearly constant beamwidth obtained when piezoelectric ring halves are excited 90 degrees out-of-phase.
  • Experimental results validate theoretical predictions.

Conclusions:

  • The study demonstrates a method to improve the performance of piezoelectric cylindrical shell transducers for underwater acoustic applications.
  • Optimized electrode excitation significantly enhances frequency response and beamwidth control.
  • The findings provide a basis for designing more effective directional sonar transducers.