Which risk increases when turbine blade resonance overlaps harmonics?

💡 Explanation

Harmonic excitation at resonance causes large-amplitude vibrations; blades experience cyclic stress that increases fatigue crack propagation because of repeated loading. Therefore fatigue leading to crack failure is prominent, rather than less specific blade problems, impacting its useful life.

• Which outcome occurs when stress fractures disrupt crystalline lattice?
• Which outcome results when iterative eigenfunction solver fails to converge within set tolerances?
• Which outcome increases when expanding a closed Rankine cycle with low condenser pressure?
• Which risk increases significantly when temperature causes increased phonon activity in crystalline silicon?
• Which consequence results when exceeding the dielectric strength while propagating a capacitor-based resonant signal?
• Which outcome shifts a sealed reaction vessel's equilibrium?