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Using Ultrasonic Lamb Waves To Measure Moduli Of CompositesMeasurements of broad-band ultrasonic Lamb waves in plate specimens of ceramic-matrix/fiber and metal-matrix/fiber composite materials used to determine moduli of elasticity of materials. In one class of potential applications of concept, Lamb-wave responses of specimens measured and analyzed at various stages of thermal and/or mechanical processing to determine effects of processing, without having to dissect specimens. In another class, structural components having shapes supporting propagation of Lamb waves monitored ultrasonically to identify signs of deterioration and impending failure.
Document ID
19950070406
Document Type
Other - NASA Tech Brief
Authors
Kautz, Harold E. (NASA Lewis Research Center, Cleveland, OH.)
Date Acquired
August 16, 2013
Publication Date
November 1, 1995
Publication Information
Publication: NASA Tech Briefs
Volume: 19
Issue: 11
ISSN: 0145-319X
Subject Category
PHYSICAL SCIENCES
Report/Patent Number
LEW-15907
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.