Fatigue Resistance of a Uniaxial S-Glass/Epoxy Composite at Room and Liquid Helium Temperatures

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Abstract
Tension-tension axial fatigue tests of a uniavial glass filament-reinforced epoxy were conducted at 295 K and 4 K. The fatigue life was found to be an order of magnitude greater at 4 K than at 295 K. These results are believed to be the first 4 K fatigue data reported for a composite material. Key words: Cryogenics; fatigue, fiber composites: liquid helium; low tem perature tests; mechanical properties.