Industrial testing guide
Non-Destructive Testing (NDT) Overview
How NDT evaluates materials or components without intentionally destroying their serviceability.
Safety boundary: this page is conceptual. It does not provide ionizing-radiation source handling, pressure-test procedures, hazardous chemical recipes, energized test instructions, machine settings or robot operation.
What this topic covers
How NDT evaluates materials or components without intentionally destroying their serviceability.
Core testing ideas
NDT methods respond to different physical properties and discontinuity types.
Method capability depends on material, geometry, surface, access and operator competence.
An indication is evidence to interpret, not automatically a rejectable defect.
Measurement and method limits
Method capability depends on material, geometry, access, surface condition, calibration and operator competence.
Evidence and traceability
Indications require interpretation and comparison with approved acceptance requirements.
Using the result
Hazardous radiation, pressure, chemicals and machine-operation details are intentionally excluded.