Eddy current testing system with scanning probe head having parallel and normal sensing coils
United Kingdom Atomic Energy Authority (1996) Eddy current testing system with scanning probe head having parallel and normal sensing coils. US5483160.
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Official URL: http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PT...
An eddy current testing system consists of a multi-sensor probe, a computer and a special expansion card and software for data-collection and analysis. The probe incorporates an excitation coil, and sensor coils; at least one sensor coil is a lateral current-normal coil and at least one is a current perturbation coil.