History of Penetrant Inspection

Penetrant Inspection

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

Nondestructive Testing

Liquid Penetrant Inspection (LPI) in Industry 

Liquid penetrant inspection is a process in industries such as oil and gas, power generation, and aerospace. Critical components like engine parts, turbines, pressure bodies, and blades commonly undergo a form of penetrant testing. 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 … Read more