Anisotropic Electric Conductivities in Graphite Fiber Reinforced Composites

  • John M. Liu
  • Susan N. Vernon


As a result of manufacturing processes, there is a strong tendency for the atomic basal planes in graphite to aligned preferentially along the fiber axis. Such fibers are anisotropic in their electrical properties. In composite laminates containing these fibers, the electrical properties are dependent on the precursors from which the fibers are made (e.g. pitch or PAN based), and upon the heat treatment the fibers and the composite have been subjected to after manufacturing.


Electrical Resistivity Fiber Direction Orientation Dependence Graphite Fiber Probe Impedance 
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  1. 1.
    Vernon, S. N. “Eddy Current Resistivity Model”, Materials Evaluation, Vol. 46, No. 12, 1988, pp. 1581–1587.Google Scholar
  2. 2.
    Vernon, S. N. and Gammell, P. M., Patent #4922201: “Eddy Current Method for Measuring Electrical Resistivity and Device for Providing Accurate Phase Selection”, 1 May 1990.Google Scholar
  3. 3.
    Vernon, S. N. and Liu, J. M., “Eddy Current Probe Design for Anisotropic Composites”, Materials Evaluation, Vol. 50, No. 1, 1992, pp. 36–41.Google Scholar

Copyright information

© Springer Science+Business Media New York 1998

Authors and Affiliations

  • John M. Liu
    • 1
  • Susan N. Vernon
    • 2
  1. 1.Carderock Div.Naval Surface Warfare CenterWest BethesdaUSA
  2. 2.AMRON Corp.ArlingtonUSA

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