Electrical Excitation of Flexural Mechanical Resonances in Symmetrically Electroded Piezoelectric and Ferroelectric Specimens

Abstract

A clear understanding of the relationship of mechanical and acoustical excitation to electrical output of piezoelectric materials is important in the design of large-area acoustic sensors. Chen(I1 Nuovo Cimento 2 D, 1145-1155 (1983)) has reported on electrical excitation of flexural mechanical resonances that are not accompanied by detectable electrical disturbances in the ac drive circuits in a number of different specimens such as X- and Z-cut quartz, Z-cut LiNb03, ADP, PZTs, BaTi03, and PLZTs. These observations have raised questions about the understanding of electromechanical interactions. Speculations about the cause of the resonances include the possibility of incompleteness of the constitutive equations of piezoelectricity, surface polarization phenomena, and simple couplings due to slight structural asymmetries. Keywords: Piezoelectric; Ferroelectric; Electromechanical resonance; Structural asymmetry; Induced body couple; Reprints.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1988
Accession Number
ADA196177

Entities

People

  • Joseph E. Blue
  • Peter J. Chen
  • Robert Y. Ting
  • Theodore A. Henriquez

Organizations

  • Sandia National Laboratories

Tags

Communities of Interest

  • Advanced Electronics
  • Sensors

DTIC Thesaurus Topics

  • Acoustic Detectors
  • Amplitude
  • Classification
  • Constitutive Equations
  • Detectors
  • Electric Fields
  • Equations
  • Frequency
  • Materials
  • Military Research
  • Piezoelectric Materials
  • Piezoelectricity
  • Polarization
  • Resonance
  • Resonant Frequency
  • Security
  • Two Dimensional

Readers

  • Materials Science and Engineering.
  • Theoretical Analysis.

Technology Areas

  • Microelectronics
  • Microelectronics - Microelectromechanical Systems