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Which outcome occurs when excessive vibration induces fatigue failure in a composite beam embedded in wing structure?

A)Delamination reduces structural stiffness locally
B)Resonance amplifies flutter instability globally
C)Ablation increases drag at high speeds
D)Buckling reduces aerodynamic control surfaces

💡 Explanation

When vibrations induces fatigue in layered beams, delamination occurs through interfacial crack growth creating layer separation because cyclic stress weakens the adhesive bonds. Therefore reduction in structural stiffness happens near failure region, rather than flutter, ablation, or global buckling that need unrelated causes

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