Issue34

J. Pokluda et alii, Frattura ed Integrità Strutturale, 34 (2015) 142-149; DOI: 10.3221/IGF-ESIS.34.15 146 -250 -200 -150 -100 -50 0 50 100 0 50 100 150 200 250 300 350 l [μm] z [μm] -20 0 20 40 60 0 20 40 60 80 100 120 140 160 180 200 l [μm] z [μm] Figure 2 : Mode II in ferritic-pearlitic steel, cylindrical shear specimen (a) , compact-tension shear specimen (b) . The white arrow defines the profile showed below and is parallel to the applied shear direction. -60 -40 -20 0 20 40 60 0 50 100 150 200 250 300 350 400 450 l [μm] z [μm] -10 0 10 20 30 40 50 0 50 100 150 200 250 300 350 l [mm] z [μm] Figure 3 : Mode III in ferritic-pearlitic steel, cylindrical shear specimen (a) , torsion specimen (b) . The white arrow defines the profile showed below and is parallel to the applied shear direction. (a) (b) precrack (a) (b) precrack mode III mode III final fracture final fracture precrack mode II final fracture precrack mode II final fracture 52° 69° 46° 49°