The critical stress σc for crack propagation in a brittle material, using the principles of fracture mechanics is
A. $${\left( {\frac{{2E{\gamma _s}}}{{2\pi \alpha }}} \right)^{\frac{1}{2}}}$$
B. $${\left( {\frac{{3E{\gamma _s}}}{{2\pi \alpha }}} \right)^{\frac{1}{2}}}$$
C. $${\left( {\frac{{2E{\gamma _s}}}{{\pi \alpha }}} \right)^{\frac{1}{2}}}$$
D. $${\left( {\frac{{3E{\gamma _s}}}{{\pi \alpha }}} \right)^{\frac{1}{2}}}$$
Answer: Option C
This Question Belongs to Electronics And Communications Engineering >> Materials And Components
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