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← ScienceWhich consequence results when thermal stress weakens epoxy-carbon fiber bonds?
A)Delamination reduces structural composite strength✓
B)Resin stiffening increases impact resilience
C)Fiber pullout enhances surface toughness
D)Matrix cracking improves adhesive interface
💡 Explanation
Reduced thermal stability causes matrix cracking, initiating adhesive failure via interfacial debonding. This **delamination** sharply reduces the composite's load-bearing ability because epoxy breakdown weakens shear transfer, therefore structural failure results rather than alternative strengthening behaviors.
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