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← ScienceWhich failure mode is enhanced as ceramic turbine blade lattices experience greater thermal cycling?
A)Increased creep rate magnitude
B)Amplified recrystallization kinetics
C)Exacerbated martensitic transformation
D)Aggravated thermal shock cracking✓
💡 Explanation
Thermal cycling induces stresses exceeding fracture toughness; therefore, Griffith's crack propagation is accelerated due to expansion and contraction, rather than creep. Micro-cracks accumulate then initiate catastrophic failure when sufficient energy releases because of rapid non-equilibrium cooling.
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