Cymbal transducers: A review

R. E. Newnham, Jindong Zhang, Richard Joseph Meyer, Jr.

Research output: Contribution to conferencePaperpeer-review

28 Scopus citations

Abstract

The cymbal transducers consist of a piezoelectric disk (poled in the thickness direction) sandwiched between two cymbal-shaped metal end caps. The metal caps serve as a mechanical transformer which transforms the high impedance, small extensional motion of the ceramic into low impedance, large flexural motion of the shell. The cymbal was originally designed as an actuator, which provides a sizable displacement as well as a large generative force, bridging the gap between the two most common actuators, the bimorph and the multilayer. It was later proposed as a shallow water sound projector and receiver. Single elements are characterized by high Q, low efficiency and medium power output capability. Their low cost and thin profile allow the transducer to be assembled into large flexible arrays. A 5×20 prototype array was built and tested. It has a broadband response in the frequency range between 17kHz and 100kHz. The array is flexible and easily conforms to a curved surface. Finite element code ATILA was used successfully in modeling and optimizing the single element transducer. Several modifications were investigated for various applications with the aid of computer modeling. Among them are the double-dipper (deep submergence), the double-driver (unidirective beam pattern) and the smart caps (adjustable resonance frequency).

Original languageEnglish (US)
Pages29-32
Number of pages4
StatePublished - Dec 1 2000
Event12th IEEE International Symposium on Applications of Ferroelectrics - Honolulu, HI, United States
Duration: Jul 21 2000Aug 2 2000

Other

Other12th IEEE International Symposium on Applications of Ferroelectrics
CountryUnited States
CityHonolulu, HI
Period7/21/008/2/00

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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