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← ScienceWhich consequence results when resonant frequency causes structural fatigue in aircraft wings?
A)Accelerated crack propagation occurs✓
B)Material's tensile strength declines
C)Corrosion weakens joining rivets
D)Flight instability causes control loss
💡 Explanation
When the aircraft wing's natural frequency matches the airflow's frequency, resonance occurs, therefore increased amplitude vibrations induce fatigue cracking because cyclic stress concentrates at crack tips rather than uniform load distribution causing material weakening or instability.
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