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What can be the magnitude of the stress amplitude in a component where the mean stress is 0 MPa, if the component is required to

What can be the magnitude of the stress amplitude in a component where the mean stress is 0 MPa, if the component is required to last for 10000 cycles? The material is S700MC (Rm=700MPa) and reduced endurance limit=qwred=260MPa.

ANSWER: aabout: 500 MPa

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