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← ScienceWhich outcome occurs when thermal stress degrades epoxy bonds holding carbon fibers in a composite overwrapped pressure vessel?
A)Catastrophic rupture at operating pressure✓
B)Increased compressive strength axially
C)Improved thermal conductivity gradually
D)Enhanced vibration damping capability
💡 Explanation
Catastrophic rupture results, because thermal degradation reduces the resin's cohesive strength via **bond scission**, reducing load transfer. Therefore, the vessel bursts before its design limit, rather than deforming plastically, due to stress delocalization.
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