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← HistoryWhich consequence arises when tension exceeds aramid rope strength in a swing bridge cable during bascule operation?
A)Yield point induces plastic deformation
B)Crystalline lattice dislocation propagates rapidly
C)Catastrophic fracture leads to collapse✓
D)Progressive oxidation minimizes material strength degradation
💡 Explanation
Catastrophic fracture results because exceeding aramid's tensile strength initiates crack propagation, leading to total failure of the suspension cable via brittle fracture. Therefore, structural elements experience sudden collapse, rather than gradual warning from yielding.
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