Which risk increases when the chilled-iron compression links in a Stephenson bridge experience prolonged fluctuating stress under heavy rail traffic?

💡 Explanation

Bearing fatigue increases because fluctuating stress induces microcrack propagation by METAL FATIGUE, weakening bearings. The repeated cycles cause internal defects to grow, therefore, components fail sooner rather than operating under steady stress conditions and lower bearing degradation.

• Which consequence resulted from inadequate terrace wall drainage in ancient hillside agriculture?
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• Which disadvantage limited cannon effectiveness after repeated firing utilising cast bronze barrels?
• Which outcome resulted from cyclical tin depletion in late Bronze Age metallurgy?
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