stress-amplitude

Fatigue life of a material for a fully reversed loading condition is estimated from $\sigma_a = 1100N^{-0.15}$, where $\sigma_a$ is the stress amplitude in MPa and N is the failure...

A machine element has an ultimate strength ($\sigma_u$) of 600 N/mm², and endurance limit ($\sigma_{en}$) of 250 N/mm². The fatigue curve for the element on a log-log plot is shown...

In a structure subjected to fatigue loading, the minimum and maximum stresses developed in a cycle are $$200$$$$MPa$$ and $$400MPa$$ respectively. The value of stress amplitude (in...