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10 Cards in this Set
- Front
- Back
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Describe the steps involved in a dye penetrant inspection
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Surface is cleaned, and then penetrant is applied and allowed to dwell for a specified time. The penetrate is then removed with an emulsifier or cleaner. Once remove, the part is dried 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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Magnifying glass, flashlight, mirror and possibly a borescope
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What are some of the non-destructive testing methods that may be used on aluminum parts?
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Visual, dye penetrate, eddy current, ultrasonic testing and 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, and there must be 100 % penetration
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What 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 percent
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Describe the basic steps for conducting a magnetic particle inspections
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Magnetize the part, then coat the surface with ferromagnetic particles. If a defect or discontinuity is present, the particles align with the discontinuity forming a visible pattern
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What is suitable nondestructive method for detecting surface cracks in aluminum castings and forgings?
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The dye penetrant inspection method detects surface cracks with equal success on aluminum,
magnesium, brass, copper, and titanium. It can also be used on ceramics, plastics, and glass. |
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Name some types of non-destructive testing used on non-ferrous materials.
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Eddy current, dye penetrant, x-ray, and visual inspection
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