THE FRACTURE ENERGY OF COMPOSITE MATERIALS

Abstract

A study of the sources of the fracture energy and hence the brittleness of laminates shows that one of the parameters governing the usefulness of a filament as a reinforcement for a matrix is the debonding energy in shear between the filament and the matrix. A novel method of measuring this value is described. Using this technique, values are determined for freshly drawn Pyrex rods with many different surface treatments embedded in anhydride cured epoxy resin. The effects of environment are shown and it is noted that all debonding energies tend to be substantially the same value after long exposure.

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Document Details

Document Type
Technical Report
Publication Date
Sep 30, 1968
Accession Number
AD0676863

Entities

People

  • John O. Outwater
  • Michael C. Murphy

Organizations

  • University of Vermont

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Composite Materials
  • Contracts
  • Environment
  • Epoxy Resins
  • Fiber Reinforced Composites
  • High Temperature
  • Humidity
  • Laminates
  • Materials
  • Materials Laboratories
  • Materials Science
  • Mechanical Properties
  • Mechanics
  • Munitions
  • Plastics
  • Reinforced Plastics
  • Water

Readers

  • Mechanical Engineering/Mechanics of Materials.
  • Reinforced Composite Materials