Each individual eddy current coil in the probe produces a signal relative to the phase and amplitude of the structure below it. This data is referenced to an encoded position and time and represented graphically as a C-scan image. For rivet applications, the eddy current coils that pass over a defective rivet generate a unique signal response. For coils that are affected by a crack initiating from the rivet hole, an amplitude change is represented in the C-Scan display. For coils that detect no
change, the color representation remains constant in the C-scan display.
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Corrosion Detection>>