Eddy Current Testing is a non-destructive testing method that uses eddy currents to detect flaws or changes in material properties. It works by applying an electrical current to a conductor, which induces an eddy current in the conductor. This eddy current then induces an electrical field in the surrounding material. If there is a flaw or change in the material, the eddy current will be affected and this can be detected by sensors placed near the conductor. Eddy Current Testing is often used to detect cracks, corrosion, and other defects in a variety of materials including metals, composites, and ceramics.