FAA Sheet Metal Structures Practice Test

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What is described by the phenomenon of “cracking” in sheet metal work?

A type of surface finish

Failure due to uneven deformation under stress

Cracking in sheet metal work refers to the phenomenon where the metal develops fractures or breaks due to stress. This often happens when the material experiences uneven deformation during manufacturing processes, such as bending or forming. When stress is applied to the sheet metal, if the material is not able to deform uniformly, it can lead to localized areas of high stress. This high stress can exceed the material’s yield strength, resulting in cracks.

Understanding this concept is crucial in sheet metal fabrication and forming processes, as it helps metalworkers design operations that minimize the likelihood of cracking by ensuring uniform stress distribution. Proper selection of material properties, as well as appropriate manufacturing techniques, play a vital role in preventing this type of failure.

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A joining failure

Surface corrosion damage

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