The remainder of this video we will concentrate on the other mether of non-destructive testing offered by metlife locks liquid penetrate inspection as a name implies this mothod uses colored eyes the penetrate into suface cracks to facilitate detection and similar to the magnetic particle method we offer nine fluorescent and fluorescent opitions. Spot check is the trademark name for magna flecks of this awful or red dyed. Penetrate it is ideal for field in section of non poorest parts is available liquid or aerosol from it show up as vivid red in daylight and it meets all major military specifcations penetrate processing requires more steps than magnetic particle testing or paint grease soil standard and scale must be pre clean from the park with the wire brush if needed to open cracks and allow the aied to penetrate next the part must be thoroughly dried so that the cracks remain on clog than dies applied and allow enough time to penetrate into cracks after which access plan a trip must be removed then developers applied and the inspection is performed to show you how despite check nine fluorescent method works we will demonstrate the pension procedures to inspect as well, first as casey as is used to thoroughly pre clean the part second the parties try completely this step is the particularly important when using water-based cleaners because water in a crack can prevent proper diet penetration ,Third spot check as k_a_l _ test p penetrate is either sprayed or brushed onto the part whichever is more convenient for the area that needs to be convered calculating this project penetrate for about ten minutes the fourth step is to remove surfaced penetrate first wipe with a dry cloth then moistened a cloth with in approve cleaney and wipe off access penetrate do not flush the surface with cleaner because this will impair testing sensitivity a convenient alternative to cloth wipes is a new one to , three cleaner wipes these durable wives are prepackaged amp remorse and with the water-based non flammable cleaner, fifth be sure the part is completely dry after you clean it a cleaner like as casey a dries almost instantly but one two three cleaner might require some college drying, six shakthi aerosol can have escaped the estou estou developer to assure proper suspension hold a candle bout ten inches from the pardons brain small sections use just enough developer to what the part thinly and evenly applied properly spy check developer from of white layer which axes of water to drop penetrate out of the cracks too much developer masks indications too little of that retards indications the seventh step is to inspect for cracks show wp is dotted lines a few minutes later if the crack is wide and deep the red indication will be correspondingly large keras cities shrinkage lack of bond and least will appear as local areas of, color if post cleaning is desired wipe off the developer with a dry cloth and then flush with a preview encoder payment replication that require florescent inspect ion magna flux cycle penetrate is the solution so it was more sensitive then spot check so we will locate smaller cracks.