Radiographic testing uses X-rays or a radioactive isotope to evaluate components in much the same way a doctor uses an x-ray to evaluate the structures inside a human body. This type of testing works by sending the radiation through the component and measuring the amount that emerges on the opposite side. The result is a photographic-type image that reflects areas of different densities, including areas where material may be missing or thinned, such as in cracks or areas of weakness.
