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Gel-Filled Holders For Ultrasonic TransducersIn new technique, ultrasonic transducer embedded in rubbery, castable, low-loss gel to enable transducer to "look" into surface of test object or human body at any desired angle. Composed of solution of water and ethylene glycol in collagen matrix. Provides total contact of water bath, also used on bodies or objects too large for water baths, even if moving. Also provides look angles of poly(methyl methacrylate) angle block with potential of reduced acoustic impedance and refraction. Custom-tailored to task at hand, and gel sufficiently inexpensive to be discarded upon completion. Easy to couple ultrasound in and out of gel, minimizing losses and artifacts of other types of standoffs employed in ultrasonic testing.
Document ID
19920000013
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Companion, John A.
(Planning Research Corp.)
Date Acquired
August 15, 2013
Publication Date
January 1, 1992
Publication Information
Publication: NASA Tech Briefs
Volume: 16
Issue: 1
ISSN: 0145-319X
Subject Category
Physical Sciences
Report/Patent Number
LAR-14027
Accession Number
92B10013
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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