A pulsed eddy-current system was evaluated for subsurface flaw-detection capabilities in stainless steel. The standard probes, designed for flaw detection in thin specimens, were able to indicate the presence of 3-mm-holes 3 mm below the surface of a stainless steel test block. A special probe was constructed in order to obtain a deeper penetration into the material. With this probe, 3-mm-subsurface holes to a depth of 9 mm could be detected. No optimization of probe design parameters was attempted in the present investigation. (ERA citation 03:024904)
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