Radiography Testing Training and Certification
Radiography is used to test a variety of products such as welds, castings, forgings, and fabrications Because of the penetration and absorption capabilities of X and gamma radiation. Radiographic testing is one of the primary non-destructive test methods in use today. Radiographic testing usually requires exposing film to X or gamma rays that have penetrated a specimen, processing the exposed film, and interpreting the resultant radiography. ADVANTAGES OF RADIOGRAPHY (RT) Can be used with most materials. Provides a permanent visual image. Reveals the internal nature of material. Discloses fabrication errors. Reveals structural discontinuities LIMITATIONS OF RT: Impracticable to use on specimens of complex geometry. The specimen must lend itself to two-side accessibility. Laminar type discontinuities are often undetected by RT. Safety considerations imposed by X and Gamma rays must be considered. It is a relatively expensive means of non-destruct