Eddy Current Testing

We carry out Eddy Current Testing on welds and wrought products using qualified personnel.

Eddy current testing is a non-contact electromagnetic testing technique used for the inspection of conductive materials without the need to remove non-conductive coatings. An alternating current is passed through a coil in order to create an alternating magnetic field which is used to induce a localised current (eddy current) into the material under test. Eddy current is routinely used to inspect a wide range of different materials and components across several fields of engineering including oil and gas, nuclear, power generation and aerospace.

Some advantages of eddy current inspection include:

  • Sensitive to small cracks and other defects
  • Detects surface and near surface defects
  • Inspection gives immediate results
  • Equipment is very portable
  • Method can be used for much more than flaw detection
  • Minimum part preparation is required (sensitive to ‘lift-off’ from spatter, etc.)
  • Test probe does not need to contact the part
  • Inspects complex shapes and sizes of conductive materials
  • Test through paint/non-conductive coatings up to 2mm thick
Eddy Current Testing - NDT - Ultramag Inspection Services

In the proper circumstances, eddy currents can be used for:

  • Crack detection
  • Material thickness measurements (On thin material)
  • Coating thickness measurements

Conductivity measurements for:

  • Material identification (Comparative)
  • Heat damage detection
  • Case depth determination (Comparative)
  • Heat treatment monitoring