Ultrasonic transducers using piezoelectric PVDF films

Author

Kroemer, N. ; Manthey, Wolfgang ; Kuenstler, Wolfgang ; Danz, Rudi ; Geiss, Detlev

Author_Institution

Tech. Univ. Karl-Marx-Stadt, East Germany

fYear

1988

fDate

1-3 Sept. 1988

Firstpage

379

Lastpage

383

Abstract

Transducers using PVDF (poly(vinylidene fluoride)) films have certain advantages over conventional ceramic transducers. The broad frequency range allows a high resolution of the measured distance and a small minimum detection range. High reliability is achieved by microcomputer signal processing. Adaptation of acoustic parameters such as sound beam pattern and operating frequency to special measuring problems is effected by variation of geometrical transducer characteristics. Multielement transducers were also created for electronically controlled variation of sound beam patterns.<>

Keywords

piezoelectric devices; polymer films; ultrasonic transducers; acoustic parameters; broad frequency range; electronically controlled variation; geometrical transducer characteristics; measuring problems; microcomputer signal processing; multielement transducers; operating frequency; piezoelectric PVDF films; polyvinylidene fluoride; reliability; sound beam pattern; ultrasonic transducers; Acoustic beams; Acoustic measurements; Acoustic transducers; Ceramics; Frequency measurement; Piezoelectric films; Piezoelectric transducers; Signal resolution; Ultrasonic transducers; Ultrasonic variables measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrets, 1988. (ISE 6) Proceedings., 6th International Symposium on (IEEE Cat. No.88CH2593-2)

Conference_Location

Oxford, UK

Type

conf

DOI

10.1109/ISE.1988.38584

Filename

38584