Liquid Penetrants

 

 

 

Liquid Penetrants provide a reliable and accurate means of detecting various types of discontinuities which are open to an accessible surface providing a visible contrast between the discontinuity and it's background. The surface to be inspected must be cleaned to bare metal to  allow the penetrant to enter the discontinuity.

Dye Penetrant testing of a boat hull

Flourescent penetrants provide a better visibility of indications, but the inspection must be carried out in near darkness with an adequate ultraviolet (black light) source.

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