What is the focus of eddy current testing?

Eddy current testing is a non-destructive testing (NDT) method that primarily focuses on detecting flaws and defects within a conductive component by utilizing electromagnetic principles. When an alternating current passes through a coil, it generates a magnetic field that induces eddy currents in the conductive material. These eddy currents produce secondary magnetic fields, which can be measured to identify discontinuities such as cracks or corrosion within the material. The sensitivity of this method allows for the detection of both surface and near-surface defects.

This approach is advantageous because it does not require direct contact with the material being tested and can be performed quickly and efficiently on a variety of conductive materials, making it widely applicable in industries such as aerospace, automotive, and manufacturing. The ability to evaluate material integrity using electromagnetic energy is central to the effectiveness and application of eddy current testing in ensuring component safety and reliability.