A New Probe for Velocity Induced Eddy Current Inspection

摘要

Velocity induced eddy current inspection is a technique to inspect conductive materials. It has a good detection performance and is particularly well suited to situations where the speed is a factor to be considered because its sensibility increases with the moving speed. This paper assesses the field produced by several probe geometries in the detection of linear machined defects. A more detailed analysis is carried out for a probe that includes an array of cubic magnets to induce the eddy currents inside the sample and Hall sensors to measure the resultant magnetic field.