Radiographic Inspection works by generating high-energy radiation, such as X-rays or gamma rays, and passing it through the material being inspected. The radiation is absorbed by the material to varying degrees, depending on its density and thickness. The transmitted radiation passes through the material and is captured on a detector, such as a film or a digital sensor, to create a radiographic image.

The radiographic image, also known as a radiograph, shows the areas of the material that absorbed more or less radiation, indicating the presence of internal defects such as voids, cracks, or inclusions. The radiograph is analyzed by a trained inspector to identify and evaluate the size, shape, and location of the defects. Radiographic Inspection is a widely used NDT technique due to its ability to penetrate thick materials and detect a wide range of internal defects, providing valuable information about the integrity of the material or component being inspected.