Mechanics of Shrinkage During Processing of Carbon-Carbon Composite

Abstract

This report describes research into the mechanisms of shrinkage of resin-matrix laminates as they are carbonized during the process of making carbon-carbon composites. Activities have included: direct observation of composite samples while heating in the hot stage of a scanning electron microscope; calculation of strain fields from SEM images of fiber bundles; and development of image-analysis methods for characterizing the geometries of fiber arrays, with emphasis on quantifying contacts among neighboring fibers. Fiber-fiber contacts are found to be a major factor determining the shrinkage behavior of composites during carbonization.

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Document Details

Document Type
Technical Report
Publication Date
Aug 24, 2002
Accession Number
ADA407783

Entities

People

  • Julius Jortner

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Carbon Carbon Composites
  • Carbon Fibers
  • Composite Materials
  • Computers
  • Electron Microscopes
  • Geometry
  • Laminates
  • Material Degradation Processes
  • Materials
  • Materials Laboratories
  • Mechanical Properties
  • Mechanics
  • Micromechanics
  • Microscopes
  • Tensile Strength
  • Three Dimensional
  • Two Dimensional

Fields of Study

  • Materials science

Readers

  • Computer Vision.
  • Reinforced Composite Materials
  • Thin Film Deposition Science.

Technology Areas

  • Microelectronics