Which consequence results when thermally-induced bending stress is concentrated near crankshaft fillets?

💡 Explanation

When localized thermal stress concentrates, especially near geometrical stress risers like crankshaft fillets, it initiates micro-cracks via *fatigue*. These micro-cracks grow under cyclical loading because each revolution stresses the area at an elevated level, therefore leading to failure, rather than a lubrication or combustion problem.

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