NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Collections About News Help Login
Back to Results
Extensional and Flexural Waves in a Thin-Walled Graphite/Epoxy TubeSimulated acoustic emission signals were induced in a thin-walled graphite/epoxy tube by means of lead breaks (Hsu-Neilsen source). The tube is of similar material and layup to be used by NASA in fabricating the struts of Space Station Freedom. The resulting waveforms were detected by broad band ultrasonic transducers and digitized. Measurements of the velocities of the extensional and flexural modes were made for propagation directions along the tube axis (0 degrees), around the tube circumference (90 degrees) and at an angle of 45 degrees. These velocities were found to be in agreement with classical plate theory.
Document ID
20040129599
Acquisition Source
Langley Research Center
Document Type
Reprint (Version printed in journal)
Authors
Prosser, William H. (NASA Langley Research Center Hampton, VA, United States)
Gorman, Michael R. (Naval Postgraduate School Monterey, CA, United States)
Dorighi, John (Colorado Univ. Boulder, CO, United States)
Date Acquired
September 7, 2013
Publication Date
January 1, 1992
Publication Information
Publication: Journal of Composite Materials
Volume: 26
Issue: 14
Subject Category
Composite Materials
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

Related Records

There are no records associated with this record.
No Preview Available