Testing by Dye Penetrants is a type of Non Destructive Testing enabling detection of surface imperfections in non-porous materials and basicallly consists of applying a flow of liquid to the surface of the material to be tested.
The liquid, by capillary action, will penetrate the discontinuities and the excess remaining on the surface will be removed by a suitable cleaning system. The subsequent application of a developer will remove the fluid that was trapped by the discontinuities and so reveal their location.
TECHNIQUES LIQUID PENETRANT INSPECTION WE USE
SCI uses a variety of techniques but some of the most important are:
ADVANTAGES OF THESE TESTS
Using Penetrant Testing has a number of advantages: