Which risk significantly increases when an ICE crankshaft experiences torsional resonance during high-speed operation?

💡 Explanation

When torsional resonance occurs in a crankshaft, excessive cyclic shear stresses concentrate at stress risers because repetitive twisting amplifies vibrational energy, leading to crack initiation and propagation, causing fatigue fracture. Therefore crankshaft fatigue cracking results, rather than lubrication issues, injector errors, or blow-by problems which have different root causes.

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