Many models of multiaxial fatigue limit under the bending and torsion
loading have been reported in literature. In this paper, an attempt is
made to extend the multiaxial fatigue limit models to finite fatigue
life. Further these empirical models together with uniaxial S-N
equations, including the axial S-N equation and torsion S-N equation,
are used to perform multiaxial fatigue life assessment. By using a large
number of experimental data of fatigue life reported in literature, an
accuracy of these empirical models has been checked.