In Eddy Current Testing (ET), a coil having an AC current is placed near to the specimen surface, or around the specimen to be inspected. The current in the coil generates circulating eddy currents in the specimen close to the surface and this in turn affect the current in the coil by mutual induction.

Flaws and material variations in the specimen affect the strength of the eddy currents. The presence of flaws, etc. is therefore measured by electrical changes in the exciting coil. INSPECTECH provides complete Eddy Current Testing services.