Tension specimens (diameter d0 0.500 in., gage length L0 2.00 in.) made of structural materials A and B are tested to failure in tension. (a) At failure the distances between the gage marks are LAf 2.90 in. and LBf 2.22 in.; the corresponding diameters at the failure cross sections are dAf 0.263 in. and dBf 0.471 in., respectively. Determine the percent elongation in 2 in. and the percent reduction in area for these two materials, and classify each material as either brittle or ductile. (b) From these tensile tests the following data are also obtained: EA 10.0 103 ksi, (Y)A 5 ksi, (U)A 13 ksi; EB 10.4 103 ksi, (Y)B 73 ksi, (U)B 83 ksi. From the data given here, make rough sketches (to scale) of the stress-strain diagrams of materials A and B.
Tension specimens (diameter d0 0.500 in., gage length L0 2.00 in.) made of structural materials A and B are tested to failure in tension. (a) At failure the distances between the gage marks are LAf 2.90 in. and LBf 2.22 in.; the corresponding diameters at the failure cross sections are dAf 0.263 in. and dBf 0.471 in., respectively. Determine the percent elongation in 2 in. and the percent reduction in area for these two materials, and classify each material as either brittle or ductile. (b) From these tensile tests the following data are also obtained: EA 10.0 103 ksi, (Y)A 5 ksi, (U)A 13 ksi; EB 10.4 103 ksi, (Y)B 73 ksi, (U)B 83 ksi. From the data given here, make rough sketches (to scale) of the stress-strain diagrams of materials A and B.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Question
Tension specimens (diameter d0 0.500 in.,
gage length L0 2.00 in.) made of structural materials A
and B are tested to failure in tension. (a) At failure the distances between the gage marks are LAf 2.90 in. and LBf
2.22 in.; the corresponding diameters at the failure cross
sections are dAf 0.263 in. and dBf 0.471 in., respectively.
Determine the percent elongation in 2 in. and the percent reduction in area for these two materials, and classify each
material as either brittle or ductile. (b) From these tensile tests the following data are also obtained: EA 10.0 103 ksi,
(Y)A 5 ksi, (U)A 13 ksi; EB 10.4 103 ksi, (Y)B
73 ksi, (U)B 83 ksi. From the data given here, make rough
sketches (to scale) of the stress-strain diagrams of materials
A and B.
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