Radiographic Testing (RT) is a non-destructive testing (NDT) technique that uses ionizing radiation to produce images of the internal structure of materials and components.
This method works by passing high-energy radiation, typically X-rays or gamma rays, through the material being tested. The radiation is absorbed differently by different materials and thicknesses, resulting in variations in the transmitted radiation. These variations are captured on a radiographic film or a digital detector, producing a two-dimensional image of the internal structure of the material.
RT is commonly used to detect internal defects such as voids, cracks, porosity, and inclusions in materials such as metals, plastics, ceramics, and composites. It is a widely used method in industries such as aerospace, petrochemical, and power generation, where safety and reliability are of utmost importance.