1.

Which of the following equation depicts the Cottrell formulation of ductile to brittle transition?

A. ( <sub>i</sub>D<sup>1/2</sup>+k )k = G <sub>s</sub>
B. ( <sub>i</sub>D<sup>1/2</sup>+k )k &gt; G <sub>s</sub>
C. ( <sub>i</sub>D<sup>1/2</sup>+k )k &lt; G <sub>s</sub>
D. ( <sub>i</sub>D<sup>1/2</sup>+k ) = G <sub>s</sub>
Answer» C. ( <sub>i</sub>D<sup>1/2</sup>+k )k &lt; G <sub>s</sub>


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