Dye penetrant inspection (DP), also called liquid penetrate inspection (LPI) or penetrant testing (PT), is a widely applied and low-cost inspection method used to check surface-breaking defects in all non-porous materials (metals, plastics, or ceramics).
Learn about the Penetrant Inspection method of Nondestructive Testing, including basic steps for NDT with an AMS 2644 Type 1 water washable penetrant. Magnaflux’s Brian Batteiger explains surface preparation with Spotcheck SKC-S, penetrant application with Zyglo penetrant, dwell time, removing excess penetrant, applying Magnaflux developer and inspecting under UV light for indications.
