7. Calculate the engineering strain (inches/inches) for a carbon steel post under tensile stress with an original length of 2.3 inches and a gage length of 2.5 inches. (4 points)
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- Original length (L0) = 2.3 inches - Gage length (L) = 2.5 inches Show more…
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A cylindrical specimen of stainless steel having a diameter of $12.8 \mathrm{mm}(0.505 \text { in. })$ and a gauge length of $50.800 \mathrm{mm}(2.000 \text { in. })$ is pulled in tension. Use the load-elongation characteristics tabulated below to complete parts (a) through (f). (a) Plot the data as engineering stress versus engineering strain. (b) Compute the modulus of elasticity. (c) Determine the yield strength at a strain offset of 0.002. (d) Determine the tensile strength of this alloy. (e) What is the approximate ductility, in percent elongation? (f) Compute the modulus of resilience.
A cylindrical specimen of stainless steel having a diameter of $12.8 \mathrm{~mm}(0.505 \mathrm{in}$.) and a gauge length of $50.800 \mathrm{~mm}(2.000 \mathrm{in}$ ) is pulled in tension. Use he load-elongation characteristics shown in the ollowing table to complete parts (a) through (f). (a) Plot the data as engineering stress versus engineering strain. (b) Compute the modulus of elasticity. (c) Determine the yield strength at a strain offset of $0.002$. (d) Determine the tensile strength of this alloy. (e) What is the approximate ductility, in percent elongation? (f) Compute the modulus of resilience.
A bar made of structural steel having the stress-strain diagram shown in the figure has a length of 48 in. The yield stress of the steel is $42 \mathrm{ksi}$, and the slope of the initial linear part of the stress-strain curve (modulus of elasticity) is $30 \times 10^{3}$ ksi. The bar is loaded axially until it elongates 0.20 in., and then the load is removed. How does the final length of the bar compare with its original length? Hint: Use the concepts illustrated in Fig. $1-39 \mathrm{b}$.
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