Stress-Induced Effects upon the Structure and Properties of Carbon Fibers.

Abstract

Microstructures and structural development with heat treatment of carbon fibers from pitch, rayon, polyacrylonitrile and pitch mesophase were characterized by diamagnetic susceptibility and SEM; and the dynamic torsional behavior (modulus, damping at about 1 Hz) and electrical resistance properties (resistivity, temperature dependence, piezoresistance) of individual fibers were measured and compared. A survey of the structure-dependence of the fiber properties revealed similarities that appear to be common to all stratic (hexagonal layer) carbon materials, as well as characteristic differences associated with fiber precursor type and processing. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Jul 31, 1980
Accession Number
ADA089207

Entities

People

  • David B. Fischbach
  • Kunio Komaki
  • Seshadri Srinivasagopalan

Organizations

  • University of Washington

Tags

Communities of Interest

  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Acrylonitrile Polymers
  • Carbon Fibers
  • Carrier Mobility
  • Composite Materials
  • Electrical Resistance
  • Graphitic Materials
  • Heat Treatment
  • Materials
  • Materials Science
  • Measurement
  • Mechanical Properties
  • Mechanics
  • Modulus Of Elasticity
  • Scattering
  • Stresses
  • Temperature Gradients
  • Tensile Modulus

Readers

  • Mechanical Engineering/Mechanics of Materials.
  • Reinforced Composite Materials
  • Superconducting Magnet Technology