Visual Testing


Visual Testing Visual testing (VT), with or without optical aids, is the original method of NDT. Many defects are surface-breaking and can be detected by careful direct visual inspection. VT is the oldest and most widely used Nondestructive test method. The test method is applied to almost every product as a quality assurance tool. The most detrimental unacceptable discontinuities in the objects or items are the surface opening discontinuities