Irradiation effects on the mechanical properties of composite organic insulators

Conference · Sat Jan 01 04:00:00 EST 1983

OSTI ID:5905275

Egusa, S; Kirk, M A; Birtcher, R C; Hagiwara, M; Kawanishi, S

Four kinds of cloth-filled organic composites (filler: glass or carbon fiber; matrix: epoxy or polymide resin) were irradiated with 2-MeV electrons at room temperature, and were examined with regard to the mechanical properties. Following irradiation, the Young's (tensile) modulus of these composites remains practically unchanged even after irradiation up to 15,000 Mrad. The shear modulus and the ultimate strength, on the other hand, begin to decrease after the absorbed dose reaches about 2000 Mrad for the glass/epoxy composite and about 5000 approx. 10,000 Mrad for the other composites. This result is ascribed to the decrease in the capacity of load transfer from the matrix to the fiber due to the radiation-induced debonding at the interface. As to the fracture behavior, the propagation energy increases from the beginning of irradiation. This result is attributed to the radiation-induced decrease in the bonding energy at the interface. The same study was made also for these composites and an alumina fiber-epoxy composite irradiated with fast neutrons at room temperature and 5/sup 0/K. 7 figures, 1 table.

• Research Organization: Argonne National Lab., IL (USA); Japan Atomic Energy Research Inst., Takasaki, Gunma. Takasaki Radiation Chemistry Research Establishment
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 5905275
• Report Number(s): CONF-830573-4; ON: DE83014703
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360306* -- Composite Materials-- Radiation Effects-- (-1987)
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CHALCOGENIDES
COMPOSITE MATERIALS
ELECTRICAL EQUIPMENT
ELECTRICAL INSULATORS
EPOXIDES
EQUIPMENT
FRACTURE PROPERTIES
GLASS
MATERIALS
MECHANICAL PROPERTIES
ORGANIC COMPOUNDS
ORGANIC INSULATORS
ORGANIC OXYGEN COMPOUNDS
ORGANIC POLYMERS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL RADIATION EFFECTS
POLYMERS
RADIATION EFFECTS
YOUNG MODULUS