NDLI: Extensional and flexural waves in a thin-walled graphite/epoxy tube

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Extensional and flexural waves in a thin-walled graphite/epoxy tube

Content Provider	NASA Technical Reports Server (NTRS)
Author	Gorman, Michael R. Prosser, William H. Dorighi, John
Copyright Year	1992
Description	Simulated 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.
File Size	90135
Page Count	20
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_20040129599
Archival Resource Key	ark:/13960/t9f52kk7t
Language	English
Publisher Date	1992-01-01
Access Restriction	Open
Subject Keyword	Composite Materials Plate Theory Broadband Thin Walls Pipes Tubes Ultrasonic Wave Transducers Fabrication Wave Propagation Flexural Strength Acoustic Emission Struts Graphite-epoxy Composites Space Station Freedom Lay-up Stiffness Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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