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← ScienceWhich risk increases when a carbon fiber composite is exposed to prolonged UV radiation?
A)Delamination of plies occurs✓
B)Increased thermal conductivity observed
C)Material becomes less brittle
D)Yield strength increases slightly
💡 Explanation
UV radiation breaks down the polymer matrix via photolysis, compromising interfacial adhesion; therefore, plies delaminate because matrix degradation from broken covalent bonds weakens the composite’s structural integrity, rather than increasing strength or altering thermal properties significantly.
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