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← TechnologyWhich risk increases when CNC-milled parts subject to extreme thermal cycling exceed design dimensional tolerances?
A)Galvanic corrosion accelerates rapidly
B)Creep deformation becomes unpredictable
C)Fatigue life reduces significantly✓
D)Harmonic resonance creates instability
💡 Explanation
Increased thermal stress from thermal cycling causes micro-cracks that propagate from areas exceeding tolerance via stress concentration. This failure arises through fatigue crack propagation because the cyclic stress range is widened; therefore fatigue life decreases significantly, rather than directly influencing galvanic corrosion.
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