NDT Glossary
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About this glossary
Over 200 terms used in non-destructive testing, inspection and asset integrity, each defined in the sense the codes actually use rather than the dictionary sense. Terminology matters commercially here: written practices, procedures and client audits all turn on precise use of terms like "indication" versus "defect", "certification" versus "qualification", and "examination" versus "inspection" — distinctions that carry contractual weight.
In this section
- Ultrasonic Testing — NDT Glossary Definition
- Radiographic Testing — NDT Glossary Definition
- Magnetic Particle Testing — NDT Glossary Definition
- Penetrant Testing — NDT Glossary Definition
- Eddy Current Testing — NDT Glossary Definition
- Visual Testing — NDT Glossary Definition
- Acoustic Emission Testing — NDT Glossary Definition
- Leak Testing — NDT Glossary Definition
- Thermography / Infrared Testing — NDT Glossary Definition
- Microwave Testing — NDT Glossary Definition
- PAUT — What Phased Array Ultrasonic Testing Means | NDT Glossary
- Time-of-Flight Diffraction — NDT Glossary Definition
- Total Focusing Method — NDT Glossary Definition
- Full Matrix Capture — NDT Glossary Definition
- Guided Wave Testing — NDT Glossary Definition
- Internal Rotary Inspection System — NDT Glossary Definition
- Automated Ultrasonic Testing — NDT Glossary Definition
- Magnetic Flux Leakage — NDT Glossary Definition
- Alternating Current Field Measurement — NDT Glossary Definition
- Computed Radiography — NDT Glossary Definition
- Digital Radiography — NDT Glossary Definition
- Real-Time Radiography — NDT Glossary Definition
- A-Scan — NDT Glossary Definition
- B-Scan — NDT Glossary Definition
- C-Scan — NDT Glossary Definition
- D-Scan — NDT Glossary Definition
- S-Scan — NDT Glossary Definition
- L-Scan — NDT Glossary Definition
- Back-Wall Echo — NDT Glossary Definition
- Calibration Block — NDT Glossary Definition
- Distance-Amplitude Correction — NDT Glossary Definition
- Distance-Gain-Size — NDT Glossary Definition
- Time-Corrected Gain — NDT Glossary Definition
- Beam Spread — NDT Glossary Definition
- Near-Field — NDT Glossary Definition
- Far-Field — NDT Glossary Definition
- Dead Zone — NDT Glossary Definition
- Gating — NDT Glossary Definition
- Transducer — NDT Glossary Definition
- Dual-Element Probe — NDT Glossary Definition
- Angle-Beam Probe — NDT Glossary Definition
- Normal-Beam Probe — NDT Glossary Definition
- Contact Coupling — NDT Glossary Definition
- Couplant — NDT Glossary Definition
- Immersion Testing — NDT Glossary Definition
- Shear Wave — NDT Glossary Definition
- Longitudinal Wave — NDT Glossary Definition
- Surface Wave — NDT Glossary Definition
- Lamb Wave — NDT Glossary Definition
- Mode Conversion — NDT Glossary Definition
- Attenuation — NDT Glossary Definition
- Decibel — NDT Glossary Definition
- Reference Reflector — NDT Glossary Definition
- Side-Drilled Hole — NDT Glossary Definition
- Flat-Bottom Hole — NDT Glossary Definition
- Notch Reference — NDT Glossary Definition
- X-Ray Tube — NDT Glossary Definition
- Gamma Source — NDT Glossary Definition
- Iridium-192 — NDT Glossary Definition
- Cobalt-60 — NDT Glossary Definition
Where to go next
If you are qualifying people, start with NDT training and certification and the ASNT certification pathways. If you are building or defending a programme, start with ASNT Level III consulting. If the problem is that the records exist but cannot be produced on demand, that is what inspection management software and the asset integrity platform are for. Ask a Level III directly.