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Broadband electrostatic acoustic transducer for liquidsCapacitive electrostatic transducer (ESAT) measures absolute displacement amplitudes of ultrasonic waves in liquids, and may be used as calibrator for other transducers or as probe for nondestructive study and characterization of materials. ESAT consists of thin conductive membrane stretched over metallic housing. Ultrasonic waves incident on membrane cause it to vibrate and generate signal proportional to wave amplitude. Entire assembly is sealed for immersion in liquid.
Document ID
19800000078
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Cantrell, J. H. (National Research Council)
Heyman, J. S. (Univ. of Tennessee)
Breazeale, M. A. (Univ. of Tennessee)
Torbett, M. A. (Univ. of Tennessee)
Yost, W. T.
Date Acquired
August 10, 2013
Publication Date
August 1, 1980
Publication Information
Publication: NASA Tech Briefs
Volume: 5
Issue: 1
ISSN: 0145-319X
Subject Category
Mechanics
Report/Patent Number
LAR-12465
ISSN: 0145-319X
Report Number: LAR-12465
Accession Number
80B10078
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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