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← ScienceWhich mechanical failure occurs when a composite aircraft wing exceeds designed flex?
A)Matrix cracking and interfacial debonding
B)Fiber pull-out in tensile loading
C)Delamination from composite ply separation✓
D)Elastic deformation above yield threshold
💡 Explanation
Delamination occurs as excess flex induces interlaminar shear stresses causing *bond rupture* between plies; because the adhesive forces are exceeded, therefore plies separate rather than experiencing fiber failure or elastic deformation.
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