Effect of Co-60 gamma radiation on the mechanical properties of epoxy blends and epoxy-graphite fiber interface

Journal Article · Sat Jun 01 04:00:00 EDT 1991 · Polymer Composites; (United States)

DOI:https://doi.org/10.1002/pc.750120304· OSTI ID:5237553

Netravali, A N; Manji, A ^[1]

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1. 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), Journal Name: Polymer Composites; (United States) Vol. 12; ISSN 0272-8397; ISSN PCOMD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360605* -- Materials-- Radiation Effects
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CARBON FIBERS
COBALT 60
COBALT ISOTOPES
COMPOSITE MATERIALS
CURING
ELECTROMAGNETIC RADIATION
EPOXIDES
FIBERS
GAMMA RADIATION
INTERFACES
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
IONIZING RADIATIONS
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
MATERIALS
MECHANICAL PROPERTIES
MINUTES LIVING RADIOISOTOPES
MONTE CARLO METHOD
NUCLEI
ODD-ODD NUCLEI
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
PHYSICAL RADIATION EFFECTS
RADIATION EFFECTS
RADIATIONS
RADIOISOTOPES
SHEAR PROPERTIES
TENSILE PROPERTIES
YEARS LIVING RADIOISOT
YIELD STRENGTH