T. Okada et S. Nishijima, DEVELOPMENT OF RADIATION-RESISTANT ORGANIC COMPOSITES FOR CRYOGENIC USE, Radiation physics and chemistry, 48(2), 1996, pp. 249-256
The mechanism of the radiation induced degradation of the mechanical p
roperties in composite materials have been studied and based on the me
chanism the radiation resistant organic composites for fusion magnet h
ave been developing. It was found that the degradation was brought by
the change of the fracture mode from tensile (or flexural) to shear fa
ilure. Consequently the intrinsic parameter which control the degradat
ion was concluded to be the interlaminar shear strength. To develop th
e radiation resistant composites, therefore, means to develop the comp
osites showing the radiation resistant interlaminar shear strength. Th
e mechanism was confirmed using three dimensional fabric reinforced pl
astics which do not have the interlaminar area. The roles of matrix in
the composites were also revealed. The effects of dose quality and ir
radiated temperature on the radiation induced degradation were also di
scussed and the selection standards of the components for radiation re
sistant composites were proposed. Copyright (C) 1996 Elsevier Science
Ltd.