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Smart Materials, Structures, and Systems
Magneto-optic imaging (MOI) is a relatively new technology that produces analog images of magnetic flux leakage from surface and subsurface defects. An alternating current carrying foil serves as the excitation source and induces eddy currents in a conducting test specimen. Under normal conditions, the associated magnetic flux is tangential to specimen surface. Anomalies in the specimen result in generating a normal component of the magnetic flux density. The magnetooptic sensor produces adoi:10.1117/12.514759 fatcat:khtjpq2k4naxxirjdcwe2eloca