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Phase-Insensitive Ultrasonic Testing SystemUltrasonic testing system developed for use in revealing hidden disbonds at rough, inaccessible interfaces between layers of material. Includes array of small piezoelectric transducers, receiving outputs electronically processed individually and combined in such way as to make system phase-insensitive, overcoming limitations imposed by phase-sensitivity. Development of present ultrasonic system and phase-insensitive-array technique which based motivated by need to detect disbonds under conditions of bondline inhibitor, liner, and fuel at ends of segments of solid rocket motor of space shuttle. Here, liner-to-fuel bondline very rough with respect to ultrasonic wavelength.
Document ID
19950065213
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Madaras, Eric I.
(NASA Langley Research Center, Hampton, VA.)
Date Acquired
August 17, 2013
Publication Date
February 1, 1995
Publication Information
Publication: NASA Tech Briefs
Volume: 19
Issue: 2
ISSN: 0145-319X
Subject Category
Physical Sciences
Report/Patent Number
LAR-13980
Accession Number
95B10054
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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