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 3, Problem 3.19QP
Three steel bars with a diameter of 25 mm and carbon contents of 0.2, 0.5, and 0.8%, respectively. The specimens were subjected to tension until rupture. The load versus deformation results were as shown in Table P3.19.
If the gauge length is 50 mm, determine the following:
- a. a The tensile stresses and strains for each specimen at each load increment.
- b. b Plot stresses versus strains for all specimens on one graph.
TABLE P3.19
- c. The proportional limit for each specimen.
- d. The 0.2% offset yield strength for each specimen.
- e. The modulus of elasticity for each specimen.
- f. The strain at rupture for each specimen.
- g. Comment on the effect of increasing the carbon content on the following:
- i. Yield strength
- ii. Modulus of elasticity
- iii. Ductility
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hree steel bars with a diameter of 25 mm and carbon contents of 0.2, 0.5, and 0.8%, respectively. The specimens were subjected to tension until rupture. The load versus deformation results were as shown in Table P3.19. If the gauge length is 50 mm, determine the following:
The tensile stresses and strains for each specimen at each load increment.
Plot stresses versus strains for all specimens on one graph.
The proportional limit for each specimen.
The 0.2% offset yield strength for each specimen.
The modulus of elasticity for each specimen.
The strain at rupture for each specimen.
Comment on the effect of increasing the carbon content on the following:
Yield strength ii. Modulus of elasticity iii. Ductility
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A plot of the linear portion of the stress–strain relationship. Determine modulus of elasticity using the best fit approach.
Proportional limit.
Yield stress.
Ultimate strength.
When the applied load was 18kN, the diameter was measured as12.7mm Determine Poisson’s ratio.
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Do you expect the true strain at fracture to be larger or smaller than the engineering strain at fracture? Why?
A tensile test was performed on a metal specimen with a diameter of 1⁄2 inch and a gage length (the length over which the elongation is measured) of 4 inches. The data were plotted on a load-displacement graph, P vs. ∆L. A best-fit line was drawn through the points, and the slope of the straight-line portion was calculated to be P y∆L 5 1392 kips yin. What is the modulus of elasticity?
Chapter 3 Solutions
Materials For Civil And Construction Engineers In Si Units
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