Investigation on the Crack Initiation of V-Shaped Notch Tip in  Precision Cropping

<table class="table-group" width="800px"><tr class="fig-image" id="a"><td><img alt="861465.fig.005a" src="https://static.hindawi.com/articles/amse/volume-2014/861465/figures/861465.fig.005a.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(a) </b>Fracture surface of left side for LY8 bar</td></tr></table></td></tr><tr class="fig-image" id="b"><td><img alt="861465.fig.005b" src="https://static.hindawi.com/articles/amse/volume-2014/861465/figures/861465.fig.005b.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(b) </b>Fracture surface of right side for LY8 bar</td></tr></table></td></tr><tr class="fig-image" id="c"><td><img alt="861465.fig.005c" src="https://static.hindawi.com/articles/amse/volume-2014/861465/figures/861465.fig.005c.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(c) </b>Fracture surface of left side for 20 steel bar</td></tr></table></td></tr><tr class="fig-image" id="d"><td><img alt="861465.fig.005d" src="https://static.hindawi.com/articles/amse/volume-2014/861465/figures/861465.fig.005d.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(d) </b>Fracture surface of right side for 20 steel bar</td></tr></table></td></tr><tr class="fig-image" id="e"><td><img alt="861465.fig.005e" src="https://static.hindawi.com/articles/amse/volume-2014/861465/figures/861465.fig.005e.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(e) </b>Fracture surface of left side for 45 steel bar</td></tr></table></td></tr><tr class="fig-image" id="f"><td><img alt="861465.fig.005f" src="https://static.hindawi.com/articles/amse/volume-2014/861465/figures/861465.fig.005f.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(f) </b>Fracture surface of right side for 45 steel bar</td></tr></table></td></tr></table>

<table>Fracture geometrical forms of left side and right side of V-shaped notch bottom surface.</table>

Advances in Materials Science and Engineering

fig5

Figure 5

Figure 5: Investigation on the Crack Initiation of V-Shaped Notch Tip in  Precision Cropping 