An unknown specimen having a rectangular cross section of dimensions 5 mm x 20 mm is deformed in tension. Using the load-elongation data shown in the below table, answer the following questions. (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.
An unknown specimen having a rectangular cross section of dimensions 5 mm x 20 mm is deformed in tension. Using the load-elongation data shown in the below table, answer the following questions. (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.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:An unknown specimen having a rectangular cross section of dimensions 5 mm x 20 mm is
deformed in tension. Using the load-elongation data shown in the below table, answer the
following questions.
(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.
(e) Compute the modulus of resilience.
(f) What is the ductility, in percent elongation?
Load
Length
Ibf
mm
in.
75
2.953
4,740
9,140
1,065
75.025
2.954
2,055
75.05
2.955
12,920
2,900
3,720
75.075
2.956
16,540
75.113
2.957
18,300
4,110
75.15
2.959
20,170
4,530
75.225
2.962
22,900
5,145
75.375
2.968
25,070
26,800
5,635
75.525
2.973
6,025
75.75
2.982
28,640
30,240
3.012
3.071
6,440
76.5
6,800
78
31,100
7,000
79.5
3.13
31,280
7,030
81
3.189
30,820
6,930
6,560
82.5
3.248
29,180
84
3.307
27,190
6,110
85.5
3.366
5,430
4,265
24,140
87
3.425
18,970
88.725
3.493
Fracture
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