NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Aging behavior and life prediction of graphite compositesThis paper presents experimental data from two independent tests, designed to determine the long-term reliability of composite materials. The technique of accelerated aging at elevated temperatures is employed. In the first set, graphite fiber, epoxy composites in five ply layups are manufactured and tested in the standard short-beam shear mode. In the second set, Nomex honeycomb, graphite fiber/epoxy composite face and rear sheet sandwich coupons are tested. After satisfying simple consistency checks, data interpretation is attempted within the framework of an Arrhenius degradation model. The elevated temperature is assumed to influence the degradation according to this temperature-dependent rate law. From these tests on five-ply composites and honeycomb sandwiches, it is concluded that aging is not a serious problem.
Document ID
19900042441
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Ramohalli, Kumar
(Arizona Univ. Tucson, AZ, United States)
Raasch, David
(Arizona, University Tucson, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1989
Subject Category
Composite Materials
Meeting Information
Meeting: Intl. ICT Annual Conference
Location: Karlsruhe
Country: Germany
Start Date: June 27, 1989
End Date: June 30, 1989
Sponsors: Fraunhofer-Institut fuer Chemische Technologie, Gesellschaft fuer Umweltsimulation
Accession Number
90A29496
Funding Number(s)
CONTRACT_GRANT: NAS7-100
Distribution Limits
Public
Copyright
Other

Available Downloads

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