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Title: Irradiation Effect of 14 MeV Neutron on Interlaminar Shear Strength of Glass Fiber Reinforced Plastics

Abstract

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 x 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.

Authors:
; ; ; ;  [1];  [2];  [3];  [4];  [5]; ; ;  [6]
  1. National Institute for Fusion Science, Toki, Gifu, 509-5292 (Japan)
  2. Osaka University, Suita, Osaka, 565-0871 (Japan)
  3. Iwate University, Ueda, Morioka, 020-8551 (Japan)
  4. National Institute for Materials Science, Tsukuba, Ibaraki, 305-0047 (Japan)
  5. Tohoku University, Sendai, Miyagi, 980-8579 (Japan)
  6. Japan Atomic Energy Research Institute, Nakagun, Ibaraki, 319-1195 (Japan)
Publication Date:
OSTI Identifier:
20800172
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 824; Journal Issue: 1; Conference: Cryogenic engineering conference, Keystone, CO (United States), 29 Aug - 2 Sep 2005; Other Information: DOI: 10.1063/1.2192357; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; BENDING; CRACKING; DESIGN; ENERGY SPECTRA; EVALUATION; FIBERGLASS; FRACTURES; GAMMA RADIATION; GLASS; IRRADIATION; ITER TOKAMAK; MEV RANGE; NEUTRON FLUENCE; NEUTRONS; PHYSICAL RADIATION EFFECTS; REINFORCED PLASTICS; SHEAR; SHEAR PROPERTIES; SUPERCONDUCTING MAGNETS

Citation Formats

Nishimura, A., Hishinuma, Y., Seo, K., Tanaka, T., Muroga, T., Nishijima, S., Katagiri, K., Takeuchi, T., Shindo, Y., Ochiai, K., Nishitani, T., and Okuno, K. Irradiation Effect of 14 MeV Neutron on Interlaminar Shear Strength of Glass Fiber Reinforced Plastics. United States: N. p., 2006. Web. doi:10.1063/1.2192357.
Nishimura, A., Hishinuma, Y., Seo, K., Tanaka, T., Muroga, T., Nishijima, S., Katagiri, K., Takeuchi, T., Shindo, Y., Ochiai, K., Nishitani, T., & Okuno, K. Irradiation Effect of 14 MeV Neutron on Interlaminar Shear Strength of Glass Fiber Reinforced Plastics. United States. doi:10.1063/1.2192357.
Nishimura, A., Hishinuma, Y., Seo, K., Tanaka, T., Muroga, T., Nishijima, S., Katagiri, K., Takeuchi, T., Shindo, Y., Ochiai, K., Nishitani, T., and Okuno, K. Fri . "Irradiation Effect of 14 MeV Neutron on Interlaminar Shear Strength of Glass Fiber Reinforced Plastics". United States. doi:10.1063/1.2192357.
@article{osti_20800172,
title = {Irradiation Effect of 14 MeV Neutron on Interlaminar Shear Strength of Glass Fiber Reinforced Plastics},
author = {Nishimura, A. and Hishinuma, Y. and Seo, K. and Tanaka, T. and Muroga, T. and Nishijima, S. and Katagiri, K. and Takeuchi, T. and Shindo, Y. and Ochiai, K. and Nishitani, T. and Okuno, K.},
abstractNote = {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 x 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.},
doi = {10.1063/1.2192357},
journal = {AIP Conference Proceedings},
number = 1,
volume = 824,
place = {United States},
year = {Fri Mar 31 00:00:00 EST 2006},
month = {Fri Mar 31 00:00:00 EST 2006}
}