Eddy current testing (ET)

What is ET?

Advantages of ET?

Eddy Current Testing (ET) is a non-destructive testing (NDT) technique that is used to detect flaws, cracks, and defects in conductive materials. This technique works by inducing an alternating current into a conductive material, which in turn creates a magnetic field around the material. The magnetic field interacts with the material’s conductivity, resulting in eddy currents, which can be detected and analyzed to identify flaws or defects.

The advantages of Eddy Current Testing are numerous:

1. Non-Destructive: Eddy Current Testing is a non-destructive technique, meaning it does not harm the material being tested. This makes it an ideal testing technique for materials that cannot be destroyed or altered.
2. Speed: Eddy Current Testing is a fast technique, and can be used to quickly scan large areas for defects or flaws. This makes it a cost-effective technique for testing large structures, such as pipelines or bridges.
3. Sensitivity: Eddy Current Testing is a highly sensitive technique, and can detect small cracks and flaws that may not be visible to the naked eye. This makes it an excellent technique for detecting early-stage defects, which can be addressed before they become more serious.
4. Versatility: Eddy Current Testing can be used to test a wide range of conductive materials, including metals, alloys, and composites. It can also be used to test materials of different thicknesses and shapes.
5. Portable: Eddy Current Testing equipment is often portable, allowing for testing to be done in the field or at a remote location.
6. Quantitative: Eddy Current Testing provides quantitative data, which can be used to assess the severity of defects or flaws. This data can be used to determine if repairs or replacements are necessary.

Overall, Eddy Current Testing is a powerful and versatile technique that is widely used in the aerospace, automotive, and manufacturing industries. Its non-destructive nature, speed, sensitivity, and versatility make it an essential tool for detecting and analyzing flaws and defects in conductive materials.

detect surface flaws in conductive materials – ideal for the relatively thin metal material found in aircraft.