Effect of Co-60 gamma radiation on the mechanical properties of epoxy blends and epoxy-graphite fiber interface
- Cornell University, Ithaca, NY (USA)
The effect of Co-60 gamma radiation of up to 100 Mrads on an IM6-G graphite fiber-epoxy interface was studied using the single-fiber-composite (SFC) technique. Flexible epoxy blends were formulated using DGEBA based and polyglycol diepoxide epoxies which were cured with aliphatic and aromatic curing agents. Bulk epoxy specimens and graphite fibers were tension tested to obtain their tensile properties. The fragment length distribution from SFC tests, single fiber strength data, and a Monte Carlo simulation of Poisson/Weibull model for fiber strength and flaws were used to obtain the effective interfacial shear strength values. The results indicate that while graphite fiber strength is not affected by radiation, the tensile properties of the epoxies used are adversely affected by the radiation. The interfacial shear strength, however, increases significantly with the radiation dose. 36 refs.
- OSTI ID:
- 5237553
- Journal Information:
- Polymer Composites; (United States), Vol. 12; ISSN 0272-8397
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CARBON FIBERS
PHYSICAL RADIATION EFFECTS
EPOXIDES
COBALT 60
COMPOSITE MATERIALS
CURING
FIBERS
GAMMA RADIATION
INTERFACES
MECHANICAL PROPERTIES
MONTE CARLO METHOD
SHEAR PROPERTIES
TENSILE PROPERTIES
YIELD STRENGTH
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
COBALT ISOTOPES
ELECTROMAGNETIC RADIATION
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
IONIZING RADIATIONS
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
MATERIALS
MINUTES LIVING RADIOISOTOPES
NUCLEI
ODD-ODD NUCLEI
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
RADIATION EFFECTS
RADIATIONS
RADIOISOTOPES
YEARS LIVING RADIOISOT
360605* - Materials- Radiation Effects