Dye Penetrant Testing (PT)

Dye Penetrant testing is a method used to locate surface-breaking defects in all non-porous materials (metals, plastics, or ceramics). A low surface tension fluid is applied to the component which penetrates into clean and dry surface-breaking discontinuities. After adequate penetration time has been allowed, the excess penetrant is removed, and developer is applied. The developer helps to draw the penetrant out of the flaw where a visible indication becomes apparent.