History of Penetrant Inspection
Liquid penetrant inspection is a method that is used to show surface breaking flaws by bleed-out of a colored or fluorescent dye from the flaw. The technique is based on the ability of a liquid to be drawn into a “clean” surface breaking flaw by capillary action. “After a period of time called the “dwell,” excess surface penetrant is removed and a developer applied. This … Read more
