Investigation of Residual Stresses in a Hot Cured Glass Fibre Reinforced Epoxy Resin Composite

Abstract

Basic lamina elastic constants and thermal expansion coefficients have been determined for an 'E' glass fibre reinforced epoxy resin system over a range of fibre contents. These have been used as input data to a theoretical model which predicts laminate residual strains and stresses. Residual strains have also been measured experimentally. Theory and experiment were in good agreement indicating a stress-free temperature comparable to the heat deflection temperature of the resin. It is shown that in some cases residual stresses can be significant percentages of the ultimate strength of the lamina and must be allowed for in design.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1982
Accession Number
ADA116420

Entities

People

  • M. J. Hinton

Organizations

  • United States Army Armament Research, Development and Engineering Center

Tags

Communities of Interest

  • C4I

DTIC Thesaurus Topics

  • Composite Materials
  • Elastic Properties
  • Epoxy Resins
  • Equations
  • Glass Fibers
  • Laminates
  • Materials
  • Materials Laboratories
  • Materials Processing
  • Materials Testing
  • Mechanical Properties
  • Mechanical Working
  • Plastic Explosives
  • Residual Stress
  • Resins
  • Shear Stresses
  • Thermal Stresses

Fields of Study

  • Materials science

Readers

  • Polymer Science and Engineering.
  • Structural Health Monitoring of Composite Structures.