quiz4fall01 - ENSC 3313 Fall 2001.nswer 1 any 4 Questions...

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ENSC 3313, Fall 2001 Quiz 4 Name .nswer any 4 Questions only, 1 point each 1. As discussed in class, there is an error on this diagram. Explain! "DET AILS" In the 0.2% offset method of detennining the yield stress (per ASTM), the line, as stated but not shown, should be drawn parallel to the first part of the stress-strain curve. 0"' ~~- 1- Gl,- --. --10% - I have drawn your attention to the 4 factors that change as temperature increases. Identify! 2. As the temperature increases, the steel becomes a) less stiff, E decreases b) more ductile, % elongation rises c) less strong, tensile strength falls d) easier to deform, the yield strength falls The figure below shows a simple orthorhombic crystal cell in which a < b < c. By inspection, determine the (a) most probable slip direction and (b) most probable slip plane. 3 a) The most probable slip direction will have the shortest slip vector. [100]
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quiz4fall01 - ENSC 3313 Fall 2001.nswer 1 any 4 Questions...

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