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Visual Testing (VT) Services
Scientific principles: This method is based on the principles of the physical optics.
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- Detecting imperfections on the surface by simply looking at the test object.
- It is for shape and size inspections of fabricated workpieces, compliance acknowledgement and for documenting inspection and measuring results.
- Final test of fabricated workpieces, compliance acknowledgement and documenting inspection and test results.
- Inspecting welded seams to see if they are carried out adequately. Identifying visible imperfections, damages, discontinuities, contaminants of welded seams, thermal zone and surface and have them repaired. Certifying compliance, documenting test results.
- Checking if test objects are appropiately prepared for non-destructive tests.
- the most obvious method
- applicable under all circumstances
- only surface defects can be detected
- inspection sensitivity depends on exposure quality and direction, test object’s light-reflecting quality, contrast, form of its surface and the light conditions of the site
- resolution of the inspector’s eye and sharpness of his/her vision have direct effect on the inspection sensitivity