Chapter 1: Introduction to Electromagnetic Testing (1 hr 1min 27 sec)
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Introduction to Chapter 1 (2:03)
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Testing with eddy current - explained simply
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Eddy Current See Through
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James Clerk Maxwell (1831-1879) (1 min read)
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Michael Faraday (1791-1867) (1 min read)
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Faraday's Law Introduction
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Early Observations, Oersted's discovery and Faraday's Law (5:48)
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Induced EMF Light Bulb Demo (4:08)
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What is Hall Effect and How Hall Effect Sensors Work
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Feedback
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Development of Induced Currents (3:44)
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Basic Principles of Electromagnetic Testing (4:40)
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Principles of Magnetic Flux Leakage (3:43)
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Personnel Qualification (10:29)
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Read Along Chapter 1 (30:46)
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Summary of Chapter 1
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Lesson 1 Quiz
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Feedback on overall Lesson 1
Chapter 2: Electromagnetic Techniques and Magnetic Flux Leakage
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Introduction to Chapter 2 (1:28)
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Techniques and methods (Video) (6:11)
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Techniques and methods
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Eddy Current Testing Animated Explainer
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Eddy Current Testing (6:24)
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Properties of Eddy Currents
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Quiz on Eddy Current Testing
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Feedback on Eddy Current
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Alternating Current Field Measurement (ACFM)
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ACFM (11:14)
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ACFM Summary
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Quiz on ACFM
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Feedback on ACFM
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RFT Technology — Dual Driver Probe
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NORTEC® 600D HVAC and Heat Exchanger Tubing Kit: Remote Field Testing
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RFT (6:48)
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Feedback on RFT
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MFL (4:03)
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AC vs DC (1:31)
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Read Along Chapter 2 (33:12)
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Summary of Chapter 2
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Lesson 2 Quiz
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Feedback on overall Lesson 2
Chapter 3: Electromagnetic Theory
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Introduction to Chapter 3 (1:40)
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What is Electric Current? (5:33)
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Electric Current Math Problem (0:38)
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Electromagnetism (4:11)
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What is Magnetic Flux (1:20)
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Generation of Eddy Currents (1:29)
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Basic Principles of Eddy Current Inspection (Interactive Applet)
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What is Electromotive Force (EMF)? (0:47)
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Faraday's First Law (1:42)
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Faraday's Second Law (2:20)
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Resistance (2:18)
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Ohm's Law (2:20)
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Specific Resistance (4:58)
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Conductance (2:33)
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Alternating Current & Sine Wave (4:13)
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Self Inductance (1:14)
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Inductive Reactance (5:18)
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Inductive Reactance & Phase Angle (1:45)
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Impedance (4:17)
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Concept of Arctan (Tan^-1) (3:53)
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Impedance Vector Visualization (Interactive Applet)
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Arctan (Tan^-1) Math Problem (4:48)
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A Quick Recap of Eddy Current Theory
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Read Along Chapter 3 (32:56)
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Summary of Chapter 3
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Lesson 3 Quiz
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Feedback on overall Lesson 3
Chapter 4: Magnetic Flux Leakage Theory
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Introduction to Chapter 4 (1:42)
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Introduction (3:03)
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Lines of Force & Magnetic Poles (1:37)
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Magnetic Flux & Flux Density (2:06)
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Right-hand Rule (0:26)
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Magnetic Field induced by coil (1:20)
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Magnetic Properties of Materials (1:16)
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Magnetic Domains (1:33)
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Hysteresis Loop (27:14)
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Magntic Hysteresis (7:54)
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Inner Hysteresis and Permeability (2:18)
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Read Along Chapter 4 (29:26)
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Summary of Chapter 4
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Lesson 4 Quiz
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Feedback on overall Lesson 4
Chapter 5: Electromagnetic Testing Instrumentation
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Introduction to Chapter 5 (1:37)
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Eddy Current Instrument Circuits (1:31)
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Intro to Eddy Current Machine
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Wheatstone Bridge (3:23)
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Test Coil Arrangements (Absolute, Differential & Hybrid) (0:49)
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Absolute Coil (0:36)
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Differential Coil (Self-comparison technique) (2:05)
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Differential Probes (Interactive Applet)
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Differential Coil (External-comparison technique) (2:09)
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Hybrid Coil (2:50)
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Try an Eddy Current Experiment (Interactive Applet)
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Internal Functions of Eddy Current Instrumentation (1:21)
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Signal Excitation, Modulation, Preparation, Demodulation & Analysis (3:53)
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Signal to Noise Ratio (SNR) (2:57)
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ACFM Instrumentation (5:33)
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Remote Field Testing Instrumentation (3:50)
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Readout Mechanisms (Analog Meters and Audio Alarms) (2:04)
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Strip Chart Recorders & Digital Meters (2:00)
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Digital Displays and Data Storage (2:51)
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Digital Mixing and LCDs (2:10)
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Read Along Chapter 5 (40:39)
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Summary of Chapter 5
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Lesson 5 Quiz
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Feedback on overall Lesson 5
Chapter 6: Electromagnetic Sensing Elements
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Introduction to Chapter 6 (1:25)
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Eddy Current Surface Coils (2:01)
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Surface Breaking Cracks (Eddy Current Interactive Applet)
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Eddy Current Internal Coils (1:20)
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Tube Inspection (Interactive Applet)
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Eddy Current Encircling Coils (2:20)
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Encircling Coil Theory (2:23)
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Encircling Coil Reference Standards (2:28)
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Encircling Coils Applications (1:05)
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Factors affecting choice of sensing elements (2:09)
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ACFM Probes (1:26)
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ACFM Uniform Field: Advantages & Disadvantages (2:50)
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RFT Probe Configuration & Features (2:53)
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RFT Sensitivity, Probe Speed & Special Probes (3:16)
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Read Along Chapter 6 (46:22)
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Summary of Chapter 6
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Lesson 6 Quiz
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Feedback on overall Lesson 6
Chapter 7: Magnetic Flux Leakage Sensing Elements
Chapter 8: Conductivity, Coil Impedance, and Coupling
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Introduction to Chapter 8 (1:51)
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Standard Depth of Penetration
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Standard Depth of Penetration (Interactive Applet)
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Conductivity factors (5:42)
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Factors affecting conductivity (5:45)
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Permeability Factors (2:15)
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Dimensional factors (3:20)
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Lift-off and fill factors (6:23)
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Lift-off experiment (Interactive Applet)
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Thickness Measurement of Thin Conductive Sheet, Strip and Foil (Interactive Applet)
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Read Along Chapter 8 (32:08)
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Summary of Chapter 8
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Lesson 8 Quiz
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Feedback on overall Lesson 8
Review Quizzes for Level I
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Level I Quiz 1
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Level I Quiz 2
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Level I Quiz 3
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Level I Quiz 4
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Practice Questions #1: Eddy Current Review Questions Level 1 (25 questions)
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Practice Questions #2: Eddy Current Review Questions Level 1 (25 questions)
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Practice Questions #3: Eddy Current Review Questions Level 1 (25 questions)
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Practice Questions #4: Eddy Current Review Questions Level 1 (19 questions)
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End of Level 1
Review of Electromagnetic Theory
