Liquid Penetrant Testing

Liquid Penetrant Testing

Penetrant testing is a non destructive testing method that builds on the principle of visual inspection. Penetrant testing increases the see ability of small discontinuities that the human eye might not be able to detect. Liquid Penetrant inspection is a non destructive method of revealing discontinuities that are open to the surfaces of solid essentially non porous. Wide range of indications can be found regardless of configuration of work piece and regardless of flaw indication.

Liquid Penetrant Inspection is a method that is used to reveal surface breaking flaws by bleed out of a colored or fluorescent dye from the flaw. In Penetrant testing, a liquid with high surface wetting characteristics is applied to the surface of a component under test.

Liquid Penetrant Inspection (LPI) is one of the most widely used nondestructive evaluation (NDE) methods. Its popularity can be attributed to two main factors: Its relative ease of use and its flexibility. Materials that are commonly inspected using LPI include the following: Metals (aluminum, copper, steel, titanium, etc.), Glass, Many ceramic materials, Rubber, Plastics.