Fracture Surface Characteristics of Notched Angleplied Graphite/Epoxy Composites,

Abstract

Composite fracture surface characteristics and related fracture modes have been investigated through extensive microscopic inspections of the fracture surfaces of notched angleplied graphite/epoxy laminates. The investigation involved 4 ply G/E laminates of the configuration (+/- theta)s where theta = 0 deg, 3 deg, 5deg 10 deg, 15 deg, 30 deg, 45 deg, 60 deg, 75 deg, and 90 deg. Two-Inch wide tensile specimens with 0.25 in. by 0.05 in. throughslits centered across the width were tested to fracture. The fractured surfaces were then removed and examined using an Amray 1200 Scanning Electron Microscope (SEM). Evaluation of the photomicrographs combined with analytical results obtained using the CODSTRAN computer code have culminated in a unified set of fracture criteria for determining the mode of fracture in notched angleplied graphite/epoxy laminates. (AN)

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Document Details

Document Type
Technical Report
Publication Date
Sep 28, 1984
Accession Number
ADA305061

Entities

People

  • Carol A. Ginty
  • Thomas B. Irvine

Organizations

  • Glenn Research Center

Tags

DTIC Thesaurus Topics

  • Composite Material Fabrication
  • Composite Materials
  • Electron Microscopes
  • Epoxy Composites
  • Epoxy Laminates
  • Graphitic Materials
  • Laminates
  • Materials
  • Materials Processing
  • Mechanics
  • Micromechanics
  • Microscopes
  • Orientation (Direction)
  • Scanning Electron Microscopes
  • Transverse
  • Unidirectional

Fields of Study

  • Materials science

Readers

  • Structural Health Monitoring of Composite Structures.

Technology Areas

  • Microelectronics