Non-Destructive Testing

Training Exercise Hub

Interactive practice for radiographic, ultrasonic, and weld inspection topics. Work through the exercises below; ask the tutor when you get stuck.

NDT Video Library

Full online NDT courses

When you’re ready for structured video training, head over to the NDT Video Library.

Explore online NDT Training →
Shared Class Q&A

Ask the NDT Tutor

One student asks — everyone learns. Every question and answer is visible to the whole class, live.

Open Class Q&A →

Class Review

Games · 2 activities

MT Jeopardy
Magnetic particle · team quiz
PT Jeopardy
Penetrant · team quiz · timed

Radiographic Testing

RT · 11 exercises

Radiation Safety Flashcards
21 cards · ASNT trainee
Half-Value Layer
Exposure calculation
HVL — Counting
Layer counting practice
HVL — Reduction
Intensity reduction
Dose Rate & Time
Exposure timing
Inverse Square — Distance
Solve for distance
Inverse Square — Intensity
Solve for intensity
Radiography Calculator
Combined parameters
Distance Exercises
Practice set
X-ray vs Gamma Ray
Source comparison
Radiation Safety Triads
Time · distance · shielding

Penetrant Testing

PT · 10 exercises

Solvent Removable Technique
Method C · Visible dye
Water Washable · Wet Developer
Method A · Tank line, aqueous
Water Washable · Dry Powder
Method A · Tank line, dust chamber
Lipophilic Emulsifier Line
Method B · Post-emulsifiable
Hydrophilic Remover Line
Method D · Post-emulsifiable
Capillary Action & Dwell Time
Theory · Why dwell matters
Daily TAM Panel Check
Process control · PSM-5 system check
Aluminum Comparator Block
Material verification · A/B test
Emulsifier QA Check
Process control · Refractometer
Developer QA Check
Process control · Specks & hydrometer

Magnetic Particle Testing

MT · 2 exercises

The Skin Effect
AC vs DC penetration
Magnetization Techniques
Field & current directions

Ultrasonic Testing

UT · 10 exercises

Scan Plan Builder
Angle beam · skip distance
6dB Drop Sizing
Flaw sizing technique
6dB Drop — Test
Practice test
Maze Trace
Sound path tracing
Wave Modes — Particle Motion
Longitudinal · shear · Rayleigh · Lamb
Gain & Decibels
A-scan · back wall · 20 → 80 → 40 %
Label the Beams
Incident · reflected · refracted
FPADSCRYN — Frequency Effects
Slider · nine-letter zigzag · drill
Critical Angles — Wedge Builder
Drag & drop · what enters the steel
Mode Conversion
L-wave / S-wave

Weld & Materials

General · 6 exercises

Anode Heel Effect
X-ray tube geometry
Atomic Structure
Diagram builder
Isotope Builder
Ir-192 / Co-60 / Se-75
Welding Scale
Measurement practice
Concavity Gauge
Weld profile
Fillet Gauge
Fillet weld sizing