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← HistoryWhich structural problem rapidly escalated due to wind-induced resonance affecting early suspension bridges constructed with wrought iron chains?
A)Decreased fatigue life✓
B)Increased tensile strength
C)Formation of surface rust
D)Enhanced material flexibility
💡 Explanation
Reduced fatigue life occurred because cyclic loading caused by the aeroelastic flutter amplified stress at chain links. This weakened the chains, therefore accelerating structural failure rather than increased strength; different materials would have resisted fatigue longer.
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