Materials For Civil And Construction Engineers In Si Units
4th Edition
ISBN: 9781292154404
Author: Michael S Mamlouk
Publisher: PEARSON
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Textbook Question
Chapter 4, Problem 4.4QP
An aluminum alloy bar with a radius of 7 mm was subjected to tension until fracture and produced results shown in Table P4.4.
TABLE P4.4
| Stress, MPa | Strain, 10−3 m/m | Stress, MPa | Strain, 10−3 m/m |
| 0 | 0.0 | 399.9 | 5.2 |
| 55.2 | 0.6 | 427.5 | 5.8 |
| 117.2 | 1.5 | 441.3 | 6.2 |
| 186.2 | 2.4 | 448.2 | 6.5 |
| 241.3 | 3.2 | 462.0 | 7.3 |
| 296.5 | 4.0 | 468.9 | 8.1 |
| 344.8 | 4.6 | 482.7 | 9.7 |
a. Using a spreadsheet program, plot the stress–strain relationship.
b. Calculate the modulus of elasticity of the aluminum alloy.
c. Determine the proportional limit.
d. What is the maximum load if the stress in the bar is not to exceed the proportional limit?
e. Determine the 0.2% offset yield strength.
f. Determine the tensile strength.
g. Determine the percent of elongation at failure.
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Chapter 4 Solutions
Materials For Civil And Construction Engineers In Si Units
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