Course Summary

Eddy Current Testing


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Eddy Current Principle

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Eddy Current Result


Continuous wave eddy current testing is one of several non-destructive testing methods that use the electromagnetism principle. Conventional eddy current testing utilises electromagnetic induction to detect discontinuities in conductive materials.

Ultrasonic Testing is widely used for checking the quality of welds in pipes for the offshore oil industry, Flaw detection and evaluation of materials, Aerospace industries, Military defence and Offshore and marine industries.

A specially designed coil energised with alternating current is placed in proximity to the test surface generating changing magnetic-field which interacts with the test-part producing eddy current in the vicinity.

Eddy Current widely use for checking for surface breaking cracks on metal, Metal tube inspection for discontinuities, Heat treat verification of metals, Checking conductivity of metals, thickness of coatings and of thin metals, Inspection of friction stir welds, Testing gas turbine blades, Inspection of a cast iron bridge, Inspection of Hurricane propeller hubs, Testing nozzle welds in nuclear reactor.


  • Course Content:
  • • Eddy current testing of ferritic welds, structures (aerospace), and tubing such as that found in condensers, heat exchangers and air conditioning units. This course covers the techniques of surface inspection and/or internal bore inspection and is supported by examinations complying with BS EN ISO 9712.

  • Certification/Awarding Body:
  • • CSWIP

    • Course Objectives:
    • • To detect cracks, surface and near-surface, in aircraft components, structures, tubes and welds
    • • To detect corrosion and thinning in non-magnetic materials
    • • To grade and sort materials on the basis of conductivity and permeability
    • • To write clear and concise inspection instructions and test reports