- A nondestructive dye-penetrant inspection technique to confirm the presence of cracks in materials that are subject to vibrations. The surface of the part is coated with a penetrant in which a visible, or fluorescent, dye is dissolved or suspended for an appropriate length of time and then rinsed until all the penetrant is cleaned off the surface. The part is then placed in a fixture that vibrates and is observed under ultraviolet light. If the vibration opens up a crack that has accepted some of the penetrant, the crack will show up as a glow in blacklight. Also called wing zyglo, zyglo, or dye penetrant inspection.
Aviation dictionary. 2014.
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zyglo — i. A proprietary nondestructive inspection technique to confirm the presence of cracks in materials using a fluorescent penetrant. ii. A fluorescent penetrant used to soak the concerned part for an appropriate length of time, after which the part … Aviation dictionary
wing zyglo — A form of nondestructive inspection of parts subject to vibration. The concerned part is soaked in a fluorescent penetrant for an appropriate length of time and then rinsed. All penetrant is cleaned off the surface. The part is then placed into a … Aviation dictionary