Low cost broadband ultrasonic transducers

Author

Anspach, D. ; Salt, J.E.

Author_Institution

Dept. of Electr. Eng., Saskatchewan Univ., Saskatoon, Sask., Canada

Volume

2

fYear

1997

fDate

25-28 May 1997

Firstpage

662

Abstract

The design of a broadband wetted transducer involves stacking a piezoelectric device in layers of adhesives, electrodes and protective coatings. The frequency response of the transducer is heavily influenced by the electrodes, adhesives and protective coatings. A relatively new piezoelectric material, polyvinylidene fluoride, has a very flat linear phase response over a broad frequency band. This paper suggests specific materials for the backing and protective coating to maintain a flat response. Results of modeling, construction, and testing of transducers are reported. The transducer is designed to be used in a water flow meter

Keywords

frequency response; piezoelectric thin films; piezoelectric transducers; polymer films; protective coatings; testing; ultrasonic transducers; adhesives; backing; broadband wetted transducer; electrodes; frequency response; linear phase response; low cost broadband ultrasonic transducers; piezoelectric device; piezoelectric material; polyvinylidene fluoride; protective coatings; Coatings; Costs; Electrodes; Frequency response; Piezoelectric devices; Piezoelectric materials; Piezoelectric transducers; Protection; Stacking; Ultrasonic transducers;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical and Computer Engineering, 1997. Engineering Innovation: Voyage of Discovery. IEEE 1997 Canadian Conference on

Conference_Location

St. Johns, Nfld.

ISSN

0840-7789

Print_ISBN

0-7803-3716-6

Type

conf

DOI

10.1109/CCECE.1997.608323

Filename

608323