It is a non-destructive testing (NDT) method in which beams of high frequency sound waves that are introduced into the material being tested are used to detect surface and sub-surface flaws.
Liquid or dye penetrant testing is a non –destructive method for finding discontinuities that are open to the surface of solid and essentially non-porous materials.
Visual inspection is one of the most common and most powerful means of non-destructive testing. Visual testing requires adequate illumination of the test surface and proper eye-sight of the tester.
Radiographic Test Film Interpretation (RTFI) is the process of analyzing radiographic images (X-ray or gamma-ray films) to detect and evaluate internal flaws in materials or welds.
