Quadratic (Elliptic) Method Fatigue Curve Equationn
Strength and Mechanics of Materials
Quadratic ( Elliptic ) Method
Where: | |
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= Amplitude of normal (shear) stress [MPa,psi] |
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= Endurance limit at constant strength [MPa,psi] |
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= Mean cycle stress [MPa,psi]] |
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= Virtual mean stress [MPa,psi] |
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= Ultimate tensile strength [MPa,psi] |
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= When SUS ![]() |