In Finite Element Analysis, look at the maximum principal stresses as well as the von Mises equivalent stresses.
Analytical life assessment does not replace durability
testing; it supplements testing.
Analytical life assessment requires durability test data as input.
Dependence of fatigue strength on tensile strength and, for pulsating tension, on mean stress is minimal in the presence of sharp notches and an innocuous environment.
Fit-up and sound welding procedures
are vital to ensure adequate durability of weldments.
Preloading of mechanical fasteners is vital to the durability of a mechanically-fastened joint.