Radiography testing is a non-destructive evaluation of manufactured products or materials.
Radiography testing uses gamma rays and X-rays to inspect manufactured parts and components for flaws. The radiation is set through the material being scrutinized and onto film or some other medium. The image reveals any imperfections.
Radiographic Examinations
Radiography is used to examine products or materials for proper construction.
Radiography testing is employed to either examine properties of products manufactured or assembled, or test properties of specific materials. If the examination concerns something manufactured or assembled, the radiography establishes the correctness of its size, braze or weld integrity, detects any flaws and confirms it was properly constructed. A radiographic examination of a material seeks to verify its structure, density, consistency and elemental parts conform to specifications.
Computed Tomography
Computed tomography creates two- and three-dimensional cross-sections from flat, x-ray pictures.
Computed tomography is used to create two- and three-dimensional, cross-section views of a material or product from flat, X-ray pictures. Any internal flaws will be revealed as well as size, structure, density and other traits.
PIPA and DSPA
PIPA and DSPA use positrons to create images.
Photon induced positron annihilation (PIPA) and distributed source positron annihilation (DSPA) are two popular radiographic applications. PIPA uses a photon beam to evaluate materials. The positrons hit the electrons, annihilating them and producing gamma rays that form readable images. DSPA deposits positrons in the test object, exposing flaws.
Other Radiographic Techniques
Other radiography testing techniques produce similar results.
There are other radiographic techniques such as neutron radiography, X-ray diffraction and X-ray fluorescence.
Tags: Computed tomography, from flat, gamma rays, manufactured assembled, PIPA DSPA, positron annihilation
