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Fracture energy of epoxy resin under plane strain conditions

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Abstract

The fracture behaviour of an epoxy resin has been studied by a method which involves the pressurization of an internal circular crack. The method can be used to study both cohesive fracture and the adhesive failure of an interface. Plane strain conditions are assured because the crack does not intersect a free surface and (for adhesive failure) shrinkage stresses are eliminated as a crack driving force. Using high speed photography, the dependence of crack speed on critical pressure and specimen geometry was determined. An elastic analysis permits the derivation of fracture energy as a function of crack velocity. Fracture energy values lay between 100 and 200 Jm−3 at 35° C with a peak at a crack velocity of 37 m sec−1.

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Authors and Affiliations

  1. Department of Materials, Queen Mary College, Mile End Road, London, UK

    E. H. Andrews & A. Stevenson

Authors
  1. E. H. Andrews
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  2. A. Stevenson
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Andrews, E.H., Stevenson, A. Fracture energy of epoxy resin under plane strain conditions. J Mater Sci 13, 1680–1688 (1978). https://doi.org/10.1007/BF00548731

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  • DOI: https://doi.org/10.1007/BF00548731

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