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Sonic impedance technique detects flaws in polyurethane foam spray-on insulationSonic impedance testing detects voids and unbonded regions as small as 1 inch in diameter by 0.03 inch thick. Measurements are made manually or by automatic scanning and the readout is made by meter or recorder.
Document ID
19700000012
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Haralson, H. S. (SPACO, INC.)
Haynes, J. L.
Date Acquired
August 5, 2013
Publication Date
August 1, 1970
Subject Category
Mechanics
Report/Patent Number
Report Number: MFS-20561
MFS-20561
Accession Number
70B10012
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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