The Interlaminar Fracture Toughness of Woven Graphite/Epoxy Composites.

Abstract

The interlaminar fracture toughness of graphite/ epoxy woven composites was determined as a function of stacking sequence, thickness, and weave pattern. Plain, oxford, 5-harness satin, and 8-harness satin weave patterns of T300/934 fabric were evaluated by the double cantilever beam test. The fabric had a mode I critical-strain-energy release rate (G sub Ic) ranging from two to eight times greater than that of a 0 deg unidirectional T300/934 tape material. The interlaminar fracture toughness of a particular weave pattern was dependent on whether the stacking sequence was symmetric or asymmetric and, in some cases, on the fabric orientation.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1989
Accession Number
ADA309239

Entities

People

  • Jerry W. Deaton
  • Joan G. Funk

Organizations

  • Langley Research Center

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Cantilever Beams
  • Composite Materials
  • Coordinate Systems
  • Epoxy Composites
  • Epoxy Resins
  • Graphitic Materials
  • Impact Strength
  • Laminates
  • Materials
  • Mechanical Properties
  • Orientation (Direction)
  • Resins
  • Standards
  • Structural Components
  • Thickness
  • Toughness
  • Unidirectional

Fields of Study

  • Materials science

Readers

  • Materials Science (Mechanical Engineering).
  • Structural Health Monitoring of Composite Structures.