Effect of Voids on Graphite Fiber Reinforced Composites

Abstract

Porosity has been artificially introduced in graphite/epoxy laminates by either varying the volitale content of the prepreg or by altering the pressure during curing. A SERIES OF TECHNIQUES WAS USED TO DETERMINE THE RESULTING POROSITY AND ESTABLISH THE VARIABILITY WITHIN A PANEL. These techniques included direct and indirect measures of the void content and were compared to standard non-destructive techniques for porosity detection. Tensile, compressive, shear and flexure properties were obtained on unidirectional and cross plied specimens. The properties showed varying sensitivity to porosity, the horizontal shear strength being the most severely degraded of those properties measured.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1972
Accession Number
AD0746560

Entities

People

  • Elliot F. Olster

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Absorption
  • Epoxy Composites
  • Epoxy Laminates
  • Fabrication
  • Fiber Reinforced Composites
  • Flexural Properties
  • Laminates
  • Material Degradation Processes
  • Materials
  • Materials Processing
  • Materials Science
  • Materials Testing
  • Measurement
  • Mechanical Properties
  • Mechanical Working
  • Shear Strength
  • Tensile Properties

Fields of Study

  • Materials science

Readers

  • Reinforced Composite Materials
  • Vision Science/Vision Psychology/Cognitive Neuroscience.