Interlaminar shear properties of composite insulation systems for fusion magnets at cryogenic temperatures

Yasuhide Shindo, Tomo Takeda, Fumio Narita, Masaya Miura, Shinya Watanabe, Norikiyo Koizumi, Akira Idesaki, Kiyoshi Okuno

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

This paper reports the cryogenic interlaminar shear properties of composite insulation systems for the superconducting magnet coils in the International Thermonuclear Experimental Reactor (ITER). Short beam shear tests were performed at room temperature, liquid nitrogen temperature (77 K) and liquid helium temperature (4 K) on three insulation systems consisting of woven glass fiber reinforced plastic (GFRP) composites with different polymer resins and polyimide films, and the dependence of their apparent interlaminar shear strength on the temperature and the polymer resins was discussed. A detailed observation of failed specimens was made to verify the failure mechanisms. Insulation systems subjected to gamma irradiation at room temperature were also considered, and the effect of irradiation on the cryogenic interlaminar shear properties was examined.

Original languageEnglish
Pages (from-to)36-42
Number of pages7
JournalCryogenics
Volume50
Issue number1
DOIs
Publication statusPublished - 2010 Jan

Keywords

  • A. Composites
  • C. Mechanical properties
  • F. Fusion magnets
  • F. Structural supports
  • F. Superconducting magnets

ASJC Scopus subject areas

  • Materials Science(all)
  • Physics and Astronomy(all)

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