Eddy current inspection is widely used in nondestructive evaluation to detect cracks in
metal structures. The impedance plane measurement response, collected using our motion
controlled eddy current inspection system, is used in the analysis. A scalar reduction from
the impedance plane response is used to minimize human-factor variation. We apply a
noise interference model to the data from a large-scale experiment taking measurements
on fastener rivet holes in multilayer structures with fatigue cracks, and estimate the probability
of detection (POD). The estimates of POD as a function of crack size will be valuable
for future model-assisted POD studies.
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