Accession Number : ADA303713

Title :   Radiation Testing of Composite Materials, In Situ Versus Ex Situ Effects.

Descriptive Note : Contract rept.,

Corporate Author : TRW DEFENSE SYSTEMS GROUP REDONDO BEACH CA

Personal Author(s) : Kurland, Richard M. ; Thomasson, James F. ; Beggs, William C.

PDF Url : ADA303713

Report Date : NOV 1981

Pagination or Media Count : 105

Abstract : A study was conducted to investigate the effect of post-irradiation test environments on tensile properties of representative advanced composite materials (T300/5208, T3OO/934, c6ooo/P17oo). Four-ply +/-45/-/+45 laminate tensile specimens were exposed in vacuum up to a bulk dose of 1 x iO0rads using a mono-energetic fluence of 700 keV electrons from a Van de Graaff accelerator. Post-irradiation testing was performed while specimens were being irradiated (in situ data), in vacuum after cessation of irradiation (in vacuo data), and after exposure to air (ex situ data). Room temperature and elevated temperature effects were evaluated. The radiation-induced changes to the tensile properties were small. Since the absolute changes in tensile properties were small, the existence of a post- irradiation test environment effect was indeterminate. (AN)

Descriptors :   *COMPOSITE MATERIALS, TEST AND EVALUATION, STRESS STRAIN RELATIONS, TENSILE STRENGTH, LAMINATES, STIFFNESS, MODULUS OF ELASTICITY, STAINLESS STEEL, CHARGED PARTICLES, VACUUM CHAMBERS, HIGH ENERGY, ELECTRON BEAMS, ELECTRON ENERGY, VACUUM ULTRAVIOLET RADIATION, YIELD STRENGTH, ELECTRON IRRADIATION, ENERGETIC PROPERTIES, EPOXY RESINS, ELONGATION, VAN DE GRAAFF GENERATORS, RADIATION DOSAGE, RADIATION EFFECTS, GRAPHITE EPOXY COMPOSITES, FIBER REINFORCEMENT, POLYSULFONES.

Subject Categories : Laminates and Composite Materials

Distribution Statement : APPROVED FOR PUBLIC RELEASE