Eddy Current Testing (ET)

The MES nondestructive testing team has extensive capabilities for testing a wide variety of ferrous and nonferrous metal components by eddy current, with experience in power plants, refineries and other industrial facilities.  To perform eddy current testing on a specimen, a transducer is passed over the object being inspected. The transducer is connected to a portable electronic base unit which displays a real time data feed.

Eddy Current inspection (ET) is a non destructive inspection method which utilizes electromagnetic current to detect surface and near-surface irregularities in ferrous and non-ferrous materials by inducing an eddy current field in the part under test. Defects, such as laminations, cracks, incomplete fusion, inclusions, and voids can typically be detected.


  • Highly portable
  • Non-destructive technique
  • Sensitive to small cracks and defects
  • High sensitivity to surface and near surface defects
  • Only one surface needs to be accessible
  • Immediate results are available
  • Minimum part preparation
  • Non hazardous to operations equipment or personnel
  • AWS D1.1
  • ASTM E243
  • ASTM E309
  • ASTM E376
  • ASTM E426
  • ASTM E566
  • ASTM E571
  • ASTM E690
  • Sample Size – 0.100” – 12.00” thick