Eddy Current Testing

Eddy Current TestingElectromagnetic testing is a general test category that includes Eddy Current testing, Alternating Current Field Measurement (ACFM) and Remote Field testing. While magnetic particle testing is also an electromagnetic test, due to its widespread use it is considered a stand-alone test method rather as than an electromagnetic testing technique.  All of these techniques use the induction of an electric current or magnetic field into a conductive part, then the resulting effects are recorded and evaluated. Eddy Current Testing uses the fact that when a an alternating current coil induces an electromagnetic field into a conductive test piece, a small current is created around the magnetic flux field, much like a magnetic field is generated around an electric current.  The flow pattern of this secondary current, called an “eddy” current, will be affected when it encounters a discontinuity in the test piece, and the change in the eddy current density can be detected and used to characterize the discontinuity causing that change.

 

Contents ECT Level – 1

  1. Electrical properties
  2. Principles of magnetism
  3. Principles of electromagnetism
  4. Eddy-current inspection equipment
  5. Equipment calibration
  6. Defect detection and evaluation
  7. Eddy-current techniques
  8. Extensive practical experience
  9. Relevant standards
  10. PCN documentation

 Contents ECT Level – 2

  1. Review of Electromagnetic Theory
  2. Factors that affect Coil Impedance
  3. Factors that affect Flux Leakage Fields
  4. Signal-to-Noise Ratio
  5. Selection of Test Frequency
  6. Selection of Method of Magnetization for Flux
  7. Leakage Testing
  8. Coupling
  9. Field Strength and Its Selection
  10. Field Orientation for Flux Leakage Testing
  11. Instrument Design Consideration
  12. Safety as applicable to Eddy Current Testing and Electrical Safety

Contents ECT Level – 3

  1. Eddy Current History
  2. Electrical properties
  3. Principles of magnetism
  4. Principles of electromagnetism
  5. Eddy Current Calculations
  6. Alternative/Advanced uses of Eddy Current
  7. Eddy Current inspection equipment
  8. Equipment calibration
  9. Defect detection and evaluation
  10. Eddy Current techniques
  11. Procedure Writing
  12. Relevant standards
  13. PCN documentation

 

Venue : Lahore Duration :

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