It is used to detect expected volumetric and surface defects in all metallic and non-metallic materials.

High-energy electromagnetic waves (radiation) can penetrate many materials. Radiation penetrating a certain material may affect the radiation sensitive films placed on the other side of the material. After these films are subjected to the process of processing; The image of the interior of the material through which the radiation passes appears. This appearance is caused by voids in the material or changes in thickness/density. This view of the inside of the material is called radiography. If a detector is placed on the back of the material instead of a film and the radiation passing through the material is transferred to a monitor, this technique is also defined as radioscopy.

The radiation sources generally used in the industry are X-ray tubes and these are generally between 50 kV and 350 kV. Gamma radiation sources are IR192,Co60. In addition to these, Se75, Yb169 and Tm170 isotope energies are also used in the field of radiography.

In order for the examination to give healthy and reliable results; must be done according to standards. It is necessary to reach both surfaces of the inspection piece. It can be applied to all kinds of materials except the thickness limitation.