Fig. Crack trajectory for double notched specimen, a)\(\mathbf{\varepsilon}_{\mathbf{\text{eq}}\mathbf{,}\mathbf{\text{crit}}}^{\mathbf{p}}\mathbf{=5\%}\), b)\(\mathbf{\varepsilon}_{\mathbf{\text{eq}}\mathbf{,}\mathbf{\text{crit}}}^{\mathbf{p}}\mathbf{=6\%}\), c)\(\mathbf{\varepsilon}_{\mathbf{\text{eq}}\mathbf{,}\mathbf{\text{crit}}}^{\mathbf{p}}\mathbf{=8\%}\), d)\(\mathbf{\varepsilon}_{\mathbf{\text{eq}}\mathbf{,}\mathbf{\text{crit}}}^{\mathbf{p}}\mathbf{=9\%}\), e)\(\mathbf{\varepsilon}_{\mathbf{\text{eq}}\mathbf{,}\mathbf{\text{crit}}}^{\mathbf{p}}\mathbf{=10\%}\), f)\(\mathbf{\varepsilon}_{\mathbf{\text{eq}}\mathbf{,}\mathbf{\text{crit}}}^{\mathbf{p}}\mathbf{=12\%}\), g)\(\mathbf{\varepsilon}_{\mathbf{\text{eq}}\mathbf{,}\mathbf{\text{crit}}}^{\mathbf{p}}\mathbf{=14\%}\), h)\(\mathbf{\varepsilon}_{\mathbf{\text{eq}}\mathbf{,}\mathbf{\text{crit}}}^{\mathbf{p}}\mathbf{=16\%}\)
Fig.11 shows the effect of critical plastic strain changes on the sample failure behavior. As can be seen in this figure, as the critical strain increases, the fracture initiation in the specimens is delayed and more force is required for the fracture. This result is consistent with the findings of the related literature.15