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ET · Levels I & II

Eddy current testing training online

Built to ANSI/ASNT CP-105-2024 ET Topical Outlines
Level I, course length
40h
Level II, course length
40h
SNT-TC-1A 2024 (L1/L2)
40/40h
NAS410 (L1/L2)
40/40h
Direct to Level II
80h
CWI 9-year PDH
40PDH/lv

Eligible to submit toward AWS CWI 9-year recertification under QC1 Section 16. Each contact hour of completed training may be documented as 1 PDH. Eddy Current is not named in the AWS B5.1 NDE subject list. You may still submit it; AWS decides. How NDT hours map to PDHs

Only $599

Both levels $1,098

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About this course

Eddy Current Testing training covers electromagnetic induction, impedance plane analysis, probe selection, surface and bolt-hole inspection, conductivity and coating thickness measurement, and an introduction to eddy current array techniques.

ET dominates aviation maintenance inspection, fastener holes, wheels, and structure. If you work in or toward an aviation repair station, ET Level II is one of the most valuable qualifications you can hold.

63 LESSONS · 16 MODULES · 80 DESIGNED TRAINING HOURS

Hours that count

Active-engagement tracking

Your formal training hours accrue only while you're actively working in a lesson, idle time and hidden tabs pause the clock. The hour ledger is exportable for your employer's written practice.

Traceability

100% outline coverage

Every numbered CP-105-2024 topic for ET is machine-traced to a lesson. View the compliance report.

Curriculum

What you'll learn

Level I40 hours

Level I eddy current testing covers the history and physics of electromagnetic induction, eddy current generation and properties, sensing elements and probe types, selection of inspection parameters, readout mechanisms, and hands-on lab demonstrations. Trainees learn to perform standardized eddy current tests under the supervision of a Level II or III.

01

Introduction to Eddy Current Testing

3 lessons · 3 h
ECT Level I Theory Course 1.0
History and Development of Eddy Current Testingvideodiagram60 min
Basic Physics: Varying Magnetic Fields and Inductionvideointeractivediagram60 min
Primary and Secondary Field Relationshipsnarrationdiagramsimulation60 min
MODULE QUIZ, 10 questions · 80% to pass
02

Electromagnetic Theory: Eddy Current Generation and Impedance

4 lessons · 5 h
ECT Level I Theory Course 2.0 (2.1.1-2.1.3)
Generation of Eddy Currents by an AC Fieldvideosimulationdiagram75 min
Fields Created by Eddy Currents and Impedance Changesvideodiagramsimulation75 min
Effect of Impedance Change on Instrumentationnarrationdiagram75 min
Reading the Impedance Planesimulationvideoreference75 min
MODULE QUIZ, 10 questions · 80% to pass
03

Properties of Eddy Currents

5 lessons · 6 h
ECT Level I Theory Course 2.0 (2.1.4)
Circular Flow and Surface Concentrationvideodiagramsimulation75 min
Strength, Timing, Orientation, and Current Magnitudenarrationdiagram75 min
Frequency, Phase, and Depth of Penetrationvideosimulationreference75 min
Conductivity and Permeability Effectsvideosimulationdiagram75 min
Geometrical Effectsvideodiagram60 min
MODULE QUIZ, 10 questions · 80% to pass
04

Theory Lab Demonstrations

3 lessons · 3 h
ECT Level I Theory Course 3.0
Lab: Generating Z-Curves with Conductivity Samplesvideosimulationreference75 min
Lab: Generating Liftoff Curvesvideosimulation75 min
Level I Conductivity and Liftoff Bench Practicalinteractivediagram30 min
MODULE QUIZ, 10 questions · 80% to pass
05

Eddy Current Sensing Elements

5 lessons · 6 h
ECT Level I Basic Technique Course 1.0
Probe Coil Arrangementsvideodiagram75 min
Modes of Operation: Absolute, Differential, and Hybridvideosimulationdiagram75 min
Hall Effect Sensorsvideodiagram75 min
Applications, Advantages, and Limitationsvideoreference75 min
Factors Affecting Choice of Sensing Elementsinteractivediagram60 min
MODULE QUIZ, 10 questions · 80% to pass
06

Selection of Inspection Parameters

4 lessons · 6 h
ECT Level I Basic Technique Course 2.0
Test Frequency Selectionvideosimulationreference90 min
Drive Current and Voltage Settingsvideodiagram90 min
Gain, Display Sensitivity, and Standardizationvideosimulationreference90 min
Filtering and Thresholdsvideosimulation90 min
MODULE QUIZ, 10 questions · 80% to pass
07

Readout Mechanisms

4 lessons · 5 h
ECT Level I Basic Technique Course 3.0
Meters and Impedance Plane Displaysvideodiagram75 min
Data Recording, Alarms, and Numerical Readoutsvideoreference75 min
Marking, Sorting, and Cutoff Systemsvideodiagram75 min
Automation and Feedbackvideointeractive75 min
MODULE QUIZ, 10 questions · 80% to pass
08

Technique Lab Demonstrations

5 lessons · 6 h
ECT Level I Basic Technique Course 4.0
Lab: Filter Effects on Rotating Reference Standardsvideosimulationreference75 min
Lab: Liftoff and Frequency Effectsvideosimulation75 min
Lab: Rotational and Forward Speed Effectsvideosimulation90 min
Lab: Generating a Z-Curve with Conductivity Standardsvideosimulationreference90 min
Integrated Dynamic-Signal Acquisition and Analysis Practicalinteractivediagram30 min
MODULE QUIZ, 10 questions · 80% to pass
FINAL EXAM, 50 questions · 80% to pass · drawn from the ECT Level 1 bank

Level II40 hours

Level II eddy current testing builds on Level I theory with in-depth study of coil impedance factors, signal-to-noise ratio, test frequency selection, coupling, field strength, and instrument design, then applies them through standards, operating procedures, signal classification, flaw sizing, conductivity sorting, and thickness evaluation. Trainees learn to set up, standardize, interpret, and evaluate eddy current tests against acceptance criteria.

01

Review of Electromagnetic Theory

3 lessons · 3.8 h
ECT Level II Principles Course 1.0
Eddy Current Theory Reviewvideoreference75 min
Types of Eddy Current Sensing Probesvideodiagram75 min
Impedance Plane Masterysimulationvideoreference75 min
MODULE QUIZ, 10 questions · 80% to pass
02

Factors that Affect Coil Impedance

4 lessons · 6 h
ECT Level II Principles Course 2.0
Test Part Factors: Conductivity and Permeabilityvideosimulation90 min
Test Part Factors: Mass and Homogeneityvideodiagram90 min
Test System Factors: Frequency, Coupling, and Field Strengthsimulationvideo90 min
Test Coil Shape and Hall Effect Elementsvideodiagramreference90 min
MODULE QUIZ, 10 questions · 80% to pass
03

Signal-to-Noise Ratio

3 lessons · 4.5 h
ECT Level II Principles Course 3.0
Defining Signal-to-Noise Ratiovideodiagram90 min
SNR in Eddy Current Testingvideosimulation90 min
Methods of Improving SNRvideosimulationreference90 min
MODULE QUIZ, 10 questions · 80% to pass
04

Selection of Test Frequency

4 lessons · 5 h
ECT Level II Principles Course 4.0
Frequency and Type of Testvideosimulation75 min
Noise Causes and Reduction: Saturation, Shielding, Groundingvideodiagram75 min
Phase Discrimination and Response Speedsimulationvideo75 min
Skin Effectvideosimulationreference75 min
MODULE QUIZ, 10 questions · 80% to pass
05

Coupling and Field Strength

4 lessons · 5 h
ECT Level II Principles Course 5.0-6.0
Fill Factorvideodiagramsimulation75 min
Liftoffvideosimulation75 min
Field Strength: Permeability Changes and Saturationvideodiagram75 min
AC Field Strength Effects on Eddy Current Testingvideosimulation75 min
MODULE QUIZ, 10 questions · 80% to pass
06

Instrument Design Considerations

3 lessons · 4 h
ECT Level II Principles Course 7.0
Amplificationvideodiagram75 min
Phase Detectionvideosimulation75 min
Differentiation and Filteringvideosimulationreference90 min
MODULE QUIZ, 10 questions · 80% to pass
07

Standards and Operating Procedures

4 lessons · 4.5 h
ECT Level II Techniques and Applications Course 1.0
Standards and Specifications in Eddy Current Testingvideoreference75 min
Working from Written Operating Proceduresvideointeractive75 min
Procedure Compliance, Records, and Reportingvideoreference75 min
Level II Procedure and Standardization Jobinteractivediagram45 min
MODULE QUIZ, 10 questions · 80% to pass
08

Inspection System Output and Evaluation

5 lessons · 7.3 h
ECT Level II Techniques and Applications Course 2.0
Accept/Reject Criteria and Signal Classificationvideointeractive75 min
Detection of Signals of Interest: Near and Far Surfacevideosimulation90 min
Flaw-Sizing Techniques and Flaw Frequencyvideosimulationreference90 min
Conductivity Sorting and Thickness Evaluationvideosimulation90 min
Measurement of Ferromagnetic Propertiesvideodiagramreference90 min
MODULE QUIZ, 10 questions · 80% to pass
FINAL EXAM, 50 questions · 80% to pass · drawn from the ECT Level 2 bank
Roadmap

Advanced techniques in development

Alternating Current Field Measurement (ACFM) · Remote Field Testing (RFT) · Magnetic Flux Leakage (MFL) · Eddy Current Array (ECA)

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