Issue 35

S. Xinhong et alii, Frattura ed Integrità Strutturale, 35 (2016) 441-448; DOI: 10.3221/IGF-ESIS.35.50 445 0.5mm  ACD = 83° C A B D (a) (b) (c) Figure 4 : Tension-torsion fatigue for ,  x m =0MPa, ,  x a =185 MPa: (a) fracture surface, (b) measurement of crack initiation and early propagation plane orientation, (c) stress element. 0.5mm  ACD = 75° C A B D (a) (b) (c) Figure 5 : Tension-torsion fatigue for ,  x m =50MPa, ,  x a =185 MPa: (a) fracture surface, (b) measurement of crack initiation and early propagation plane orientation, and (c) stress element. 0.5mm  ACD = 7° C A B D (a) (b) (c) Figure 6 : Tension-torsion fatigue for ,  x m =100MPa, ,  x a =180 MPa: (a) fracture surface, (b) measurement of crack initiation and early propagation plane orientation, and (c) stress element. 0.5mm  ACD = 9° C A B D (a) (b) (c) Figure 7 : Tension-torsion fatigue for ,  x m =150MPa, ,  x a =140 MPa: (a) fracture surface, (b) measurement of crack initiation and early propagation plane orientation, and (c) stress element.