metal fatigue

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A cumulative effect causing a metal to fail after repeated applications of stress, none of which exceeds the ultimate tensile strength. The fatigue strength (or fatigue limit) is the stress that will cause failure after a specified number (usually 107) of cycles. The number of cycles required to produce failure decreases as the level of stress or strain increases. Other factors, such as corrosion, also reduce the fatigue life.

Subjects: Chemistry — Physics.

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