VT for “Visual Inspection” Testing is a widely utilised NDT method in industries, as the name suggests. The Visual testing method is heavily used by welding fabrication organisations to check the quality of the welds. The NDT technique of visual testing is flexible. That can be used for in-service inspections as well as testing of welds, castings, forgings, pipes, and tubes.
Metals, non-metals including plastic, glass, ceramics, and composites, as well as both can be tested with VT. The technique is more widely used in oil and gas refineries and in aeronautical applications. It is a well-known fact that visual testing alone accounts for more than 80% of NDT in the aerospace industry.
Numerous surface flaws and defects, including as pinholes, porosity, laps, seams, shrinkage, cracks, etc., can be found via visual testing. In order to identify and eliminate defective items, VT Inspection is a crucial testing method in CNC shops and automotive businesses.
Visual inspection, which uses one’s eyes and magnifiers for direct visual examination, is a simple and practical testing approach. Borescopes, fiberscopes, and video cameras are just a few examples of the equipment that can be used in indirect or distant visual assessment. Direct visual inspections are appropriate for surfaces that are visible from the inspector’s sight within 24 inches or two feet. While remote and indirect VT testing is appropriate for inaccessible