Fracture Mechanisms in Fibrous Composites.

Abstract

This interim report summarizes the progress made in the period 1 Aug 78 - 31 Jan 79, under grant AFOSR 78-3644 entitled 'Fracture Mechanisms in Fibrous Composites. It describes microscopic observations of the debonding, fracture and pull-out of glass fibers and carbon fibers in an epoxy resin; includes a fractographic analysis of glass fibers and carbon fibers in epoxy resin; and an analysis of work of fracture (toughness) in terms of fiber-matrix sliding processes and the dissipation of energy when a debonded fiber snaps. All experimental data was collected under ambient conditions. The approach has been to use models with experimental values for those parameters adequately measurable and to make simple assumptions about the unmeasurable parameters. This approach uses the most that a model-based theory has to offer and provides a reasonable description of experimental data. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Jan 31, 1979
Accession Number
ADA067965

Entities

People

  • Peter W. R. Beaumont

Organizations

  • University of Cambridge

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Force
  • Air Force Facilities
  • Biocomposites
  • Carbon Fibers
  • Composite Materials
  • Environment
  • Epoxy Composites
  • Epoxy Resins
  • Experimental Data
  • Failure Mode And Effect Analysis
  • Fibers
  • Glass Fibers
  • Materials
  • Observation
  • Resins
  • Statistical Analysis
  • Surface Properties

Readers

  • Computational Modeling and Simulation
  • Materials Science (Mechanical Engineering).
  • Reinforced Composite Materials