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Résistance à la fissuration et déformation au fluage des résines époxy à basse température.

Cryogenic small-flaw strength and creep deformation of expoxy resins.

Auteurs : USAMI S., EJIMA H., SUZUKI T., et al.

Type d'article : Article

Résumé

Resin cracking, a cause of coil quenching in superconducting magnets, occurs when a resin contains small flaws and sustains high thermal stress. Seven epoxy resins were chosen in order to evaluate thermo-mechanical properties, small-flaw strength, and creep deformation at low temperatures. Although the plain specimen strengths consistently increase as the temperature decreases, the fracture toughness resulting from large cracks reaches a maximum at around 80 K and then decreases at 4 K. The loss factor during cyclic loading behaves similarly, because of low-temperature relaxation of the resin, and has a maximum value at around 150 K.

Détails

  • Titre original : Cryogenic small-flaw strength and creep deformation of expoxy resins.
  • Identifiant de la fiche : 2001-2608
  • Langues : Anglais
  • Source : Cryogenics - vol. 39 - n. 9
  • Date d'édition : 1999

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