Surface Eddy Current Testing (ET)

Surface Eddy Current Testing (ET)

MHT uses NDT methods that use the principal of “electromagnetism” as the basis for conducting examinations.

MHT rope access technician doing a surface eddy inspection while suspended above waterOne of the major advantages of eddy current as an NDT tool is the variety of inspections and measurements that can be performed. In the proper circumstances, eddy currents can be used for:

  • Crack detection
  • Material thickness measurements
  • Coating thickness measurements
  • Conductivity measurements
  • Material identification
  • Heat damage detection
  • Case depth determination
  • Heat treatment monitoring

Some of the advantages of eddy current inspection include:

  • Coating removal not required
  • 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
  • Test probe does not need to contact the part
  • Inspects complex shapes and sizes of conductive materials