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Failure Criterion of Glass/Epoxy Composites Used as Electrical Insulation for Large Superconducting Magnets

  • J. M. Rey
  • F. Rondeaux
  • B. Gallet
  • A. Desirelli
  • F. Kircher
Part of the Advances in Cryogenic Engineering book series (ACRE, volume 44)

Abstract

The size of large superconducting magnets using indirect cooling is increasing, as well as their stored energy. The mechanical properties of the electrical insulation are therefore of major importance. A R&D program has been conducted in order to determine the maximum values to be used in the design of large magnets. The results of mechanical tests on insulation using different processing techniques are presented here. The paper will present some results about the mechanical properties at 4K of glass fiber ribbon based composite insulation. A failure criterion for the design of the insulation is proposed.

Keywords

Young Modulus Fiber Volume Fraction Composite Insulation Transverse Modulus Fill Direction 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

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    A. Kelly, N.H. Macmillan, « Strong Solids », 3nd edition, Clarendon press, Oxford, (1986).Google Scholar
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    D. Gay. « Matériaux composites », 2“d edition, Hermes, Paris (1989).Google Scholar
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    J.M. Rey et al., Epoxy resin developments for large superconducting magnets impregnation, Paper presented at « Nonmetallic Materials and Composites at Low Temperatures VIII», CERN, 1996. to be published in Cryogenics.Google Scholar
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    J.M. Rey et al., Helium diffusion and mechanical properties of glass fiber reinforced epoxy at cryogenic temperatures, Composite Polymers, p. 205–214, Vol. 5, No 3, (1992)Google Scholar

Copyright information

© Springer Science+Business Media New York 1998

Authors and Affiliations

  • J. M. Rey
    • 1
  • F. Rondeaux
    • 1
  • B. Gallet
    • 1
  • A. Desirelli
    • 2
  • F. Kircher
    • 1
  1. 1.Technique de Cryogénie et de MagnétismeCEA-Saclay, DSM/DAPNIA/ServiceGif-sur-YvetteFrance
  2. 2.European Laboratory for Particle Physics, Division PPECERNGenève 23Switzerland

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