Abstract:This paper presents numerical modeling and experimental measurements of eddy current (EC) probe for detecting subsurface defects in 10 mm to 15 mm thick conducting specimen. Measurements are presented for a pancake air core coil to detect subsurface defect in 10 mm thick aluminum slab. EC coil parameters namely inner radius , and outer radius , and operating frequency are optimized for deeper penetration in the conducting plate (35 MS/m) for a given coil height , and lift off distance . Preliminary simulation … Show more
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