Radiography test is a modality of non-destructive testing that uses ionizing radiation to inspect materials and components with the objective of locating and quantifying defects and degradation in material properties that would lead to the failure of engineering structures. It plays an important role in the science and technology needed to ensure product quality and reliability. Industrial Radiography uses either X-rays, produced with X-ray generators, or gamma rays generated by the natural radioactivity of sealed radionuclide sources.
Applications include wall loss detection (profile radiography) and sizing in pipes and plate through to manufacturing defects in welds, forgings castings etc.
Commonly used radioactive isotopes include Iridium 192, Cobalt 60 and Selenium 75.