Measurement of Carbon-Carbon Electrical Conductivity During Pyrolysis

  • R. C. AddisonJr.
Part of the Review of Progress in Quantitative Nondestructive Evaluation book series


The eddy current sensor described below is one of several sensors that is currently being used to monitor the pyrolysis of carbon-carbon materials. It is part of a larger system that is being developed for the closed loop control of the carbon-carbon manufacturing process [1]. The eddy current sensor is being used to monitor changes in the electrical conductivity of the specimen.


Electrical Conductivity Temperature Ramp Graphite Fiber Measuring Coil Eddy Current Sensor 


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  1. 1.
    W.J. Pardee, J. Bulau, R.C. Addison, and K. Chung, “Sensors For Carbonization Control,” in Review of Progress in Quantitative Nondestructive Evaluation, ed. D.O. Thompson and D.E. Chimenti, vol. 8B, pp. 1185–1193, Plenum Press, New York, 1989.CrossRefGoogle Scholar
  2. 2.
    We acknowledge the help and advice of G.A. Alers at Magnasonics with the initial design of the high temperature coils.Google Scholar
  3. 3.
    J. Delmonte, Technology of Carbon & Graphite Fiber Composites, pp. 251–269, von Nostrand, New York, 1981.Google Scholar
  4. 4.
    W.J. Pardee, M.R. Mitchell, A. Gupta, F. Montgomery, and J. Sheehan, Effect of Carbonization Kinetics on In-Process Mechanical Properties, to be presented at the Fall 1989 TMS Meeting.Google Scholar

Copyright information

© Springer Science+Business Media New York 1990

Authors and Affiliations

  • R. C. AddisonJr.
    • 1
  1. 1.Rockwell International Science CenterThousand OaksUSA

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