·Table of Contents
·Methods and Instrumentation

Essential Variables in ET

T. Stepinski, Uppsala University, Signals and Systems, Uppsala, Sweden


Eddy current instrument

Input circuits - probe matching

Phase sensitive detectors

Signal filters

Probe resolution




  1. ENIQ Recommended Practice 3: Strategy Documents for Technical Justification, ENIQ Report nr.5, EUR 18100EN, EC, DG-Joint Research Centre, Petten Site, July 1998.
  2. ASM Handbook, Vol 17, Nondestructive Evaluation and Quality Control, Eddy Current Inspection, ASM 1996.
  3. NDT Handbook, Vol 4, Electromagnetic Testing, R.C. McMaster, editor, ASNT, 1986.
  4. T. Stepinski, Digital Processing of Eddy Current Signals and Images, Proc. of the 6th European Conf. on NDT, Nice, October 1994, pp. 51-55.

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