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Tensile properties of an ultrahigh-strength graphite fiber in an epoxy matrixThe fiber performance and reinforcement potential for fiber composites of a special PAN-based graphite fiber were evaluated by testing the fiber's tensile properties in an epoxy matrix. Representative strand samples were taken from 30 spools of single-end, 1500-filament fiber to make over 5000 fiber/epoxy strand specimens using the filament-winding process. Characteristics studied were fiber uniformity, strength and modulus distributions at room and liquid-nitrogen temperatures, stress-strain behavior, the effect of strain rate on fiber strength, and acoustic emission during tensile loading to failure. The fiber was found to have a 3570-MPa failure stress, a 1.7% failure strain, a 206-GPa modulus, and a density of 1.77 Mg/cu m at 23 C. Liquid-nitrogen temperature and various strain rates had no significant effect on fiber tensile properties.
Document ID
19750057109
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Chiao, T. T.
Hamstad, M. A.
Jessop, E. S.
(California, University Livermore, Calif., United States)
Date Acquired
August 8, 2013
Publication Date
April 1, 1974
Subject Category
Composite Materials
Meeting Information
Meeting: American Society for Testing and Materials, Composite Reliability Conference, Las Vegas
Location: Las vegas, NV
Start Date: April 15, 1974
End Date: April 16, 1974
Sponsors: AEC
Accession Number
75A41181
Funding Number(s)
CONTRACT_GRANT: NASA ORDER C-13980-C
Distribution Limits
Public
Copyright
Other

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