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← ScienceWhich deformation results when a cantilever has excessive cyclic loading?
A)Surface cracking starts from stress concentrators✓
B)Uniform corrosion decreases cross-sectional area
C)Buckling causes catastrophic compressive failure
D)Creep leads to permanent dimensional changes
💡 Explanation
Fatigue failure will occur on a cantilever beam under excessive, cyclical stress because crack propagation initiates at surfaces with the highest stress. Therefore, the correct option, surface cracking, takes precedence rather than slower processes like corrosion occurring.
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