Eddy Current Testing Syllabus

Eddy Current Testing Level II

Course syllabus subject to change based upon specific requirements of Client and scheme of certification

​ I.      Introduction

      A.  Terms and Definitions
      B.  Applications
      C.  Review of Electromagnetic Theory
      D.  Types of Probes
II.     Factors That Effect Impedance
      A.  Test Part
      B.  Test System
III.    Signal to Noise Ratio
      A.  Relationship to Eddy Current Testing
      B.  Methods to Improve
IV.    Selection of Inspection Parameters
V.     Coupling
      A.  Fill Factor
      B.  Lift Off
VI.    Field Strength and its’ Effects

VII.   Instrumentation
VIII.  Inspection and Evaluation of Indications
      A.  General
      B.  Factors Affecting Indications
      C.  Indications from Porosity
      D.  Indications from Cracks
      E.  Indications from Specific Material Forms
IX.    Codes, Specifications and Standards
X.     Calibrations

I.      Introduction
      A.  Terms and Definitions
      B.  Applications
      C.  Basic Principles
II.     Electromagnetic Theory
      A.  Eddy Currents via A/C Field
      B.  Impedance Changes

      C.  Properties of Eddy Currents
          1.  Circular
          2.  Strongest at Surface
          3.  Small Magnitude of Current Flow
          4.  Frequency and Phase Relationship
          5.  Conductivity of Materials
          6.  Permeability of Materials
          7.  Geometry
III.    Types of Probes
      A.  Arrangements
      B.  Modes of Operation
      C.  Theory of Operation
      D.  Hall Effect Sensors
      E.  Applications
      F.  Advantages/Disadvantages
IV.     Selection of Inspection Parameters
V.      Readout Mechanisms
      A.  Impedance Plane Displays
      B.  Data Recording Systems
      C.  Alarms, etc.
      D.  Numerical Readouts
      E.  Gates, Tables, Others
VI.    Testing Equipment
VII.   Inspection and Evaluation of Indications
General
      A.  Factors Affecting Indications
      B.  Indications from Porosity
      C.  Indications from Cracks
      D.  Indications from Specific Material Forms
VIII.  Codes, Specifications and StandardsQuality IX.    Control and Calibrations​

Eddy Current Testing Level I

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