fatigue performance

fatigue assessment

crack growth rate

multiaxial fatigue

intensity factor

fatigue damage

fatigue tests

fatigue life

crack propagation

International Journal of Fatigue

In this work, the strain energy density approach (SED) is utilized to assess the fatigue strength of circumferential V-notched specimens covering axial loading and rotating bending. Subsequent calculations of the linear-elastic SED lead to a statistical proven accordance among about one-hundred experimental tests, thereby introducing extended H-function values for increased       R    c       to     ρ     values as well. Furthermore, low-cycle fatigue tests are conducted and utilized in an extensive elasto-plastic SED assessment. Thus, the scatter index of the evaluated equivalent strain energy density is reduced towards a ratio of about two. Concluding, the finite-volume-based energy approach provides an engineering-applicable fatigue assessment tool.

Local strain energy density approach to assess the fatigue strength of sharp and blunt V-notches in cast steel