TY - GEN
T1 - Irradiation effect of 14 MeV neutron on interlaminar shear strength of glass fiber reinforced plastics
AU - Nishimura, A.
AU - Hishinuma, Y.
AU - Seo, K.
AU - Tanaka, T.
AU - Muroga, T.
AU - Nishijima, S.
AU - Katagiri, K.
AU - Takeuchi, T.
AU - Shindo, Y.
AU - Ochiai, K.
AU - Nishitani, T.
AU - Okuno, K.
N1 - Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2006/3/31
Y1 - 2006/3/31
N2 - Design activity of International Thermonuclear Experimental Reactor clarifies intense neutron streaming from ports for neutral beam injectors. Energy spectrum of the streaming is very wide and 14 MeV neutron and gamma ray are the typical radiations. Large amount of glass fiber reinforced plastics will be used in a superconducting magnet system as an electric insulation material and a support structure, for such organic material is easy to manufacture, and light and cheap. In this report, effects of 14 MeV neutron and gamma ray irradiation on interlaminar shear strength and fracture mode are investigated using G-10CR small specimen of which configuration was proposed as a standard for evaluation of the interlaminar shear strength. A short beam test under three point bending was conducted at room temperature and 77 K. Neutron fluence of 3.91 × 1019 n/m2 was irradiated and the specimens did not show clear degradation of the strength. On the other hand, gamma ray irradiation of 1 MGy made the specimen weaker and 10 MGy caused delamination. Most of the specimens showed both of interlaminar cracking and bending fracture, but some specimens were fractured with irregular shear occurred on the planes connecting loading point and supporting points.
AB - Design activity of International Thermonuclear Experimental Reactor clarifies intense neutron streaming from ports for neutral beam injectors. Energy spectrum of the streaming is very wide and 14 MeV neutron and gamma ray are the typical radiations. Large amount of glass fiber reinforced plastics will be used in a superconducting magnet system as an electric insulation material and a support structure, for such organic material is easy to manufacture, and light and cheap. In this report, effects of 14 MeV neutron and gamma ray irradiation on interlaminar shear strength and fracture mode are investigated using G-10CR small specimen of which configuration was proposed as a standard for evaluation of the interlaminar shear strength. A short beam test under three point bending was conducted at room temperature and 77 K. Neutron fluence of 3.91 × 1019 n/m2 was irradiated and the specimens did not show clear degradation of the strength. On the other hand, gamma ray irradiation of 1 MGy made the specimen weaker and 10 MGy caused delamination. Most of the specimens showed both of interlaminar cracking and bending fracture, but some specimens were fractured with irregular shear occurred on the planes connecting loading point and supporting points.
KW - Fracture and cracks
KW - Fusion reactors components and instrumentation
KW - Glass-based composites
KW - Radiation damage by gamma rays
KW - Radiation damage by neutrons
KW - Superconducting magnets
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U2 - 10.1063/1.2192357
DO - 10.1063/1.2192357
M3 - Conference contribution
AN - SCOPUS:33845462833
SN - 0735403163
SN - 9780735403161
T3 - AIP Conference Proceedings
SP - 241
EP - 248
BT - ADVANCES IN CRYOGENIC ENGINEERING
T2 - ADVANCES IN CRYOGENIC ENGINEERING: Transactions of the International Cryogenic Materials Conference, ICMC
Y2 - 29 August 2005 through 2 September 2005
ER -