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Eddy current (EC) inspection is one of a number of NDT methods employing electromagnetism in conductive materials for tasks such as the detection of surface and near surface flaws and determining material properties. EC offers many advantages over other surface inspection methods such as magnetic particle or liquid penetrant inspection but is traditionally considered very dependent upon the skill of the operator and does not offer a permanent record of the inspection conducted.
The capability now exists through Eddy Current Array (ECA) technology to electronically drive multiple eddy current coils placed side by side in the same probe assembly. This project proposes to establish the essential variables that should be controlled when conducting an inspection and determine the performance of ECA systems relative to that of existing, recognised surface inspection methods: Dye Penetrant Testing (PT), conventional Eddy Current Inspection (EC) and Alternating Current Field Measurement (ACFM) as appropriate. Based upon the results of this study, a Best Practice Guide will be produced for the application of EC
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