Accession Number : AD0454635

Title :   SOME PROPERTIES OF NOL RINGS OF CARBON-BASE FIBERS AND EPOXY RESIN,

Corporate Author : NAVAL ORDNANCE LAB WHITE OAK MD

Personal Author(s) : Prosen, Stanley P.

Report Date : 04 DEC 1964

Pagination or Media Count : 22

Abstract : The recent improvement in the strength and the modulus of carbon-base fibers indicates that such fibers will soon compete with glass in composite structures where light weight is important. Carbon fibers, made by the pyrolysis of rayon yarn, were evaluated in the NOL ring form. A composite tensile strength of 5600 kg/cm2 + (80,000 psi), a+sq. cm compressive strength of over 7000 kg/cm2+(100,000 psi), and shear strengths of over 350 kg/cm2+ (5000 psi) were measured. A compressive modulus of over =280,000 kg/sq.cm (4,000,000 psi) was also determined. Several ring fabrication difficulties were encountered, with poor wetting and some fuzzing due to broken filaments causing the most trouble. The rings were somewhat porous, but in general the rings were satisfactory. (Author)

Descriptors :   (*EPOXY RESINS, COMPOSITE MATERIALS), (*COMPOSITE MATERIALS, CARBON), FIBERS, GRAPHITE, PYROLYSIS, RAYON, TENSILE PROPERTIES, COMPRESSIVE PROPERTIES, FILAMENT WOUND CONSTRUCTION.

Distribution Statement : APPROVED FOR PUBLIC RELEASE