. "Pokluda, Jaroslav" . "Pippan, Reinhard" . "P(GAP108/10/0698)" . . . "Propagation of Long Fatigue Cracks under Remote Mode II, III and II+III in Metals" . . "Propagation of Long Fatigue Cracks under Remote Mode II, III and II+III in Metals" . "modes II and III, micromechanism, stereophotogrammetry, discrete dislocation theory, metals"@en . "RIV/00216305:26620/13:PU106479!RIV14-GA0-26620___" . . "RIV/00216305:26620/13:PU106479" . . "The aim of this research was to elucidate the crack growth micromechanism of modes II, III and mixed mode II+III in metallic materials. Experiments were performed on ferritic and austenitic steels and titanium (BCC, FCC and HCP metals) using CTS specimen loading for pure mode II, torsion device for pure mode III and special device for all modes II, III and the mixed mode II+III. The notches were precracked and thermally treated in a way that minimized crack closure effects. Crack growth rate dependences on stress intensity factor ranges were acquired and the threshold values for each loading mode and material were determined. Mode III thresholds were higher than those of mode II for different steels, which is in accordance with available micromechanism models. Similarly, mode II had higher contribution to mixed-mode II+III crack propagation. Fracture morphologies were studied using stereophotogrammetry in SEM and statistical evaluation of angles of crack-wake asperities. Significant differences betw" . . "[141CB71C2CFF]" . . . "The aim of this research was to elucidate the crack growth micromechanism of modes II, III and mixed mode II+III in metallic materials. Experiments were performed on ferritic and austenitic steels and titanium (BCC, FCC and HCP metals) using CTS specimen loading for pure mode II, torsion device for pure mode III and special device for all modes II, III and the mixed mode II+III. The notches were precracked and thermally treated in a way that minimized crack closure effects. Crack growth rate dependences on stress intensity factor ranges were acquired and the threshold values for each loading mode and material were determined. Mode III thresholds were higher than those of mode II for different steels, which is in accordance with available micromechanism models. Similarly, mode II had higher contribution to mixed-mode II+III crack propagation. Fracture morphologies were studied using stereophotogrammetry in SEM and statistical evaluation of angles of crack-wake asperities. Significant differences betw"@en . . . . "4"^^ . "100356" . . "Hohenwarter, Anton" . "Propagation of Long Fatigue Cracks under Remote Mode II, III and II+III in Metals"@en . . . "26620" . . "Propagation of Long Fatigue Cracks under Remote Mode II, III and II+III in Metals"@en . "Vojtek, Tom\u00E1\u0161" . . . . "2"^^ .