Effects of high energy radiation on the mechanical properties of epoxy/graphite fiber composites

Technical Report · Tue Dec 01 04:00:00 EST 1981

OSTI ID:6771964

Fornes, R E; Memory, J D

Studies on the effects of high energy radiation on graphite fiber reinforced composites are summarized. Studies of T300/5208 and C6000/PMR15 composites, T300 fibers and the resin system MY720/DDS (tetraglycidyl-4,4'-diaminodiphenyl methane cured with diaminodiphenyl sulfone) are included. Radiation dose levels up to 8000 Mrads were obtained with no deleterious effects on the breaking stress or modulus. The effects on the structure and morphology were investigated using mechanical tests, electron spin resonance, X-ray diffraction, and electron spectroscopy for chemical analysis (ESCA or X-ray photoelectron spectroscopy). Details of the experiments and results are given. Studies of the fracture surfaces of irradiated samples were studied with scanning electron microscopy current results indicate no differences in the morphology of irradiated and control samples.

• Research Organization: North Carolina State Univ., Raleigh (USA)
• OSTI ID: 6771964
• Report Number(s): NASA-CR-168421
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360303 -- Composite Materials-- Mechanical Properties-- (-1987)
360306* -- Composite Materials-- Radiation Effects-- (-1987)
CARBON
CHEMICAL ANALYSIS
COHERENT SCATTERING
COMPOSITE MATERIALS
CRYSTAL STRUCTURE
DIFFRACTION
DOSES
ELECTRON MICROSCOPY
ELECTRON SPECTROSCOPY
ELECTRON SPIN RESONANCE
ELEMENTAL MINERALS
ELEMENTS
EPOXIDES
GRAPHITE
MAGNETIC RESONANCE
MATERIALS
MECHANICAL PROPERTIES
MICROSCOPY
MICROSTRUCTURE
MINERALS
MORPHOLOGY
NONMETALS
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
ORGANIC POLYMERS
PETROCHEMICALS
PETROLEUM PRODUCTS
PHOTOELECTRON SPECTROSCOPY
PHYSICAL RADIATION EFFECTS
POLYMERS
RADIATION DOSES
RADIATION EFFECTS
RESINS
RESONANCE
SCANNING ELECTRON MICROSCOPY
SCATTERING
SPECTROSCOPY
STRESS ANALYSIS
X-RAY DIFFRACTION