NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Crushing characteristics of composite tubes with 'near-elliptical' cross sectionsAn experimental investigation was conducted to determine whether the energy-absorption capability of near-elliptical cross-section composite tubular specimens is a function of included angle. Each half of the near-elliptical cross-section tube is a segment of a circle. The included angle is the angle created by radial lines extending from the center of the circular segment to the ends of the circular segment. Graphite- and Kevlar-reinforced epoxy material was used to fabricate specimens. Tube internal diameters were 2.54, 3.81, and 7.62 cm, and included angles were 180, 160, 135, and 90 degrees. Based upon the test results from these tubes, energy-absorption capability increased between 10 and 30 percent as included angle decreased between 180 and 90 degrees for the materials evaluated. Energy-absorption capability was a decreasing nonlinear function of the ratio of tube internal diameter to wall thickness.
Document ID
19920073895
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Farley, Gary L.
(U.S. Army, Aerostructures Directorate; NASA, Langley Research Center Hampton, VA, United States)
Jones, Robert M.
(Virginia Polytechnic Institute and State University Blacksburg, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1992
Publication Information
Publication: Journal of Composite Materials
Volume: 26
Issue: 12, 1
ISSN: 0021-9983
Subject Category
Structural Mechanics
Accession Number
92A56519
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available