Page 137 - Biaxial Multiaxial Fatigue and Fracture

122 G.B. MARQUIS AND I? KARJALAINEN-ROIKONEN

normal stress on a plane
fatigue strength coefficient
fatigue Iimit stress amplitude for axial loading, R = - 1
fatigue limit stress amplitude for axial loading, R # -1
mean stress on the plane of maximum alternating normal stress
principal stresses
fatigue limit stress range at mean stress Om
fatigue limit stress range om = 0
fatigue limit stress amplitude for torsion loading
shear stress range