Journal of Materials Science

, Volume 5, Issue 4, pp 302–307 | Cite as

The fracture energy of some epoxy resin materials

  • R. Griffiths
  • D. G. Holloway


The double cantilever beam technique has been used to measure the fracture energy of a series of cured epoxy resins. A range of materials was produced by varying the proportion of resin to hardener agent (Araldite CT200 and hardener HT901 — phthalic anhydride, CIBA Ltd) and by adding silica flour or aluminium powder as a filler.

The fracture energy for crack initiation in the cured epoxy resins ranged from approximately 103 to 105 erg cm−2, and in the “filled resins” from 104 to 5×105 erg cm−2, as the proportion of hardener increased. The fracture energy for crack arrest was somewhat lower at the higher hardener contents and particularly for the Al-filled material.


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Copyright information

© Chapman and Hall Ltd. 1970

Authors and Affiliations

  • R. Griffiths
    • 1
  • D. G. Holloway
    • 1
  1. 1.Department of PhysicsUniversity of KeeleKeeleUK

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