Foundations of Materials Science and Engineering
6th Edition
ISBN: 9781259696558
Author: SMITH
Publisher: MCG
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Chapter 6.13, Problem 44AAP
A tensile specimen of cartridge brass sheet has a cross section of 0.320 in. × 0.120 in. and a gage length of 2.00 in. Calculate the engineering strain that occurred during a test if the distance between gage markings is 2.35 in. after the test.
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Question
A cylindrical specimen of metal having a diameter of 12.88 mm and a gauge length
of 63.50 mm is tested using a tensile testing machine. The elongation measurement
are recorded in Table 3.
nPlot the stress-strain curve on the graph paper provided based on data in
Table 3
Based on the stress-strain curved plotted in (i):
Compute the modulus of elasticity
Determine the yield strength at a strain offset of 0.002.
Determine the tensile strength
Determine the ductility in percent elongation and percent area reduction
Table 3: Load-elongation readings for a metal specimen
Jadual 3: Bacaan beban pemanjangan untuk statu spesimen logam)
Load (N)
Elongation (mm)
1380
0.03
2780
0.06
5630
0.12
7430
0.2
8140
0.25
9870
0.64
12850
1.91
14100
3.18
14340
4.45
13830
5.72
12500
6.99
Fracture
In a tensile test, the engineering strain has been calculated as 0.5. What is the value
of true strain:
0.505
0.405
the material had a tensile stress of 67.7 ksi then was unloaded. the original length of the specimen was 5.0 inches. show the line on the diagram you would expect the material to follow as the load was released. estimate the length of the specimen after all load was removed.
Chapter 6 Solutions
Foundations of Materials Science and Engineering
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