Liquid Penetrant Inspection (LPI)
Liquid Penetrant Inspection (LPI), also known as Dye Penetrant Inspection, is a non-destructive testing (NDT) method used to detect surface defects such as cracks, porosity, leaks, or seams in materials that are non-porous. This method is widely used because it is relatively simple, cost-effective, and does not require complex equipment.
