DYNAMIC COUPLING COEFFICIENTS FOR DISTRIBUTED PARAMETER PIEZOELECTRIC TRANSDUCERS

Abstract

This report discusses a definition of the effective coupling coefficient for the body-force class of electromechanical transducers. This definition is based on the distribution of energy in the transducer and is therefore particularly applicable to the distributed parameter type of transducer. Furthermore, the definition results in a frequency dependent coupling coefficient which is valid for all models of vibration. The definition is applied to some common types of longitudinal vibrator and the results are compared with experiments for one particular device (a partially excited stack of ceramic disks). The influence of parasitic elements on the system coupling is also examined.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1964
Accession Number
AD0451430

Entities

People

  • William J. Marshall

Organizations

  • Navy Underwater Sound Laboratory

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Boundaries
  • Circuit Analysis
  • Circuits
  • Differential Equations
  • Elastic Properties
  • Electrical Impedance
  • Equations
  • Equations Of State
  • Frequency
  • Materials
  • Piezoelectric Transducers
  • Resonant Frequency
  • Test And Evaluation
  • Three Dimensional
  • Transducers
  • Underwater Sound
  • Vibration

Readers

  • Materials Science and Engineering.
  • Structural Dynamics.
  • Theoretical Analysis.

Technology Areas

  • Microelectronics
  • Microelectronics - Microelectromechanical Systems