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8 Cards in this Set
- Front
- Back
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describe the steps involved in a Dye penetrant inspection
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The surface is Cleaned, and then Penetrant is applied & allowed to dwell for a specified time. Penetrant is then removed with an Emulsifier or Cleaner. once removed, the part is Dried and then Developer is applied. the results are then inspected and interpreted.
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name some tools that are commonly used to assist in making visual inspections of welds
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A magnifying glass, flashlight, mirror and, possibly a boroscope.
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what are some of the nondestructive testing methods that may be used on aluminum parts
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Visual, Dye penetrant, Eddy Current, Ultrasonic testing & radiography
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What process occurs during the preparation stage of a dye penetrant inspection when the penetrating liquid is applied and then removed from a cracked part
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The penetrant enters the crack by CApillary action and remains there until made visible by the developer.
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A correctly made butt weld will have what Bead width and how much penetration?
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The bead width should be 3 to 5 times the thickness of the base metal & there must be 100% penetration.
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What telltale characteristic are evidence of a Cold weld
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A cold weld has ROugh, Irregular edges that are not feathered into the base metal and has variations in penetration amounts.
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The penetration of a fillet weld should be what percentage of the thickness of the base metal?
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25 to 50 %
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describe the basic steps for conducting a magnetic particle inspection
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Magnetize the part, then COAT the surface with ferromagnetic particles. If a defect is present the particles align with the discontinuity forming a visible pattern
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