Eddy Current Testing is a non-contact NDT technique used to identify surface and near-surface flaws in electrically conductive materials. Inspection Quality offers high-performance ET solutions for aerospace, nuclear, marine, and industrial sectors where precise, efficient, and non-invasive inspection is essential.
The method works by inducing electrical currents (eddy currents) into the material using a probe with an alternating magnetic field. Variations in the eddy current flow caused by cracks, pits, or material changes are detected and displayed, allowing technicians to assess flaws without removing coatings or dismantling equipment. ET is especially useful for inspecting tubes, fasteners, airframe structures, and heat exchanger components.
Where ET excels:
- Detection of fatigue cracks around fastener holes in aircraft
- Inspection of non-ferrous tubing in heat exchangers and condensers
- Detection of corrosion under paint (CUP)
- Surface crack detection in stainless steels, titanium, and copper alloys
Benefits of ET Inspection:
- Non-contact and fast inspection process
- Minimal surface preparation required
- Excellent for detecting tight cracks and conductivity variations
- Conforms to standards such as ISO 15548 and ASTM E243
- Ideal for high-volume testing and in-service inspection routines