Rainer schwab, hochschule karlsruhe karlsruhe university of. Although there are more options in the way the test is performed, the basic principles have not changed over the years. Dye penetration and visual inspection techniques youtube. Dye penetrant inspection dp, also called liquid penetrate inspection lpi or penetrant testing pt, is a widely applied and lowcost inspection method used to check surfacebreaking defects in all nonporous materials metals, plastics, or ceramics. V22a, 6th main, 2nd stage, peenya industrial estate, bangalore560058, india. Liquid penetrant inspection lpi, also known as dye penetrant inspection dpi or penetrant testing pt, was first developed in the early 1940s to detect flaws on the surface of materials.
The testing methods detect cracks, fractures, laps, seams and other flaws that are open to the surface that may have been caused. The temperature of the penetrant materials and the surface of the part should be between 50f and 100f for fluorescent water washable penetrants and between 60f and 125f for visible penetrants. Meters used in the liquid penetrant and magnetic particle methods e3022 practice for measurement of emission characteristics and requirements for led uva lamps used in fluorescent penetrant and magnetic particle testing 2. The penetrant may be applied to all nonferrous materials and ferrous materials, although for ferrous components magneticparticle inspection. Nonaqueous type 2 visible dye the importance of liquid penetrant inspection liquid penetrant inspection is a nondestructive test method which does not harm the parts being inspected. Penetrant inspection a nondestructive testing ndt procedure suitable for general liquid dye penetrant inspections. They may be effectively used in the inspection of both ferrous and nonferrous metals and on nonporous, nonmetallic materials, such as ceramics, plastics and glass. One of the oldest and most widely used ndt methods can be used on metals and nonmetals, including glass, rubber, plastics, ceramics, etc.
Liquid penetrant inspection report an ndt inspection test report, useful for documenting observations of liquid dye penetrant examinations format no. Looking for magnaflux dye penetrant, fluorescent 48k596. Penetrant process guide nondestructive testing product. Heres a little lesson in how weld testing is done so you can be prepared before the cwi gets onto the jobsite.
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