Industrial radiography is a type of nondestructive testing (NDT) method that uses ionizing radiation to detect and evaluate defects in materials. The test is performed by exposing the material to a beam of ionizing radiation, such as X-rays or gamma rays, and then using specialized imaging equipment, such as film or digital detectors, to create a visual representation of the material.

Any defects in the material, such as cracks or voids, will interrupt the passage of the ionizing radiation and will be visible on the radiograph. Industrial radiography is commonly used to inspect metals, ceramics, and composites for defects that could affect the strength and performance of the material.