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The Application of Electric Current Computed Tomography to Defect Imaging in Metals

  • M. R. Eggleston
  • R. J. Schwabe
  • D. Isaacson
  • L. F. Coffin
Chapter
Part of the Review of Progress in Quantitative Nondestructive Evaluation book series

Abstract

Electric Current Computed Tomography (ECCT) is a technique for producing images of the electrical resistivity profile within a body from measurements made on the body’s exterior. To make these measurements, an array of electrodes is attached to the surface of the body. Sets of current patterns are applied through these electrodes and the voltages needed to maintain these specified currents are measured and recorded. These applied currents and measured voltages are then used in a reconstruction algorithm to produce images that represent approximations to the electrical resistivity distribution in the interior of the body.

Keywords

Contact Resistance Current Pattern Resistivity Distribution Electrode Voltage Rensselaer Polytechnic Institute 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 1990

Authors and Affiliations

  • M. R. Eggleston
    • 1
  • R. J. Schwabe
    • 1
  • D. Isaacson
    • 1
  • L. F. Coffin
    • 1
  1. 1.General Electric Corporate Research and DevelopmentSchenectadyUSA

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