Q2 :A specimen of ductile cast iron having a rectangular cross section of dimensions 4.8 mm 15.9 mm (3/16 in. 5/8 in.) is deformed in tension. Using the load-elongation data tabulated below, complete problems (a) through (f). Load Length in 2.953 75.000 4,740 9,140 12,920 16,540 75.025 1,065 2,055 2,900 2.954 75,050 2.955 75.075 2.956 3,720 75.113 2.957 18,300 4,110 75.150 2.959 20,170 75.225 75.375 4,530 2.962 22,900 2.968 5,145 5,635 6,025 25,070 75.525 2.973 75.750 2.982 26,800 28,640 6,440 76.500 3.012 78.000 3.071 30,240 31,100 31,280 6,800 7,000 7,030 6,930 79.500 3.130 81.000 82.500 3.189 3.248 3.307 30,820 84.000 85.500 29,180 6,560 6,110 5,430 4,265 Fracture 27,190 3.366 24,140 87.000 3.425 18,970 88.725 3.493 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 of this alloy. e) Compute the modulus of resilience. f) What is the ductility, in percent elongation?

Elements Of Electromagnetics
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Q2 :A specimen of ductile cast iron having a rectangular cross section
of dimensions 4.8 mm * 15.9 mm (3/16 in. 5/8 in.) is deformed in
tension. Using the load-elongation data tabulated below, complete
problems (a) through (f).
Load
Length
Ib
in.
75.000
2.953
2.954
4,740
1,065
2,055
2,900
3,720
75.025
9,140
75.050
2.955
12,920
75.075
2.956
16,540
75.113
2.957
18,300
75.150
4.110
4,530
5,145
2.959
20,170
75.225
2.962
22,900
75.375
2.968
25,070
5,635
75.525
2.973
26,800
6,025
75.750
2.982
28,640
30,240
31,100
76.500
78.000
79.500
6,440
3.012
3.071
6,800
7,000
7,030
6,930
3.130
31,280
81.000
3.189
30,820
82.500
3.248
84.000
3.307
29,180
27,190
6,560
6,110
85.500
87.000
88.725
Freeture
3.366
3.425
5,430
4,265
24,140
18,970
3.493
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 of this alloy.
e) Compute the modulus of resilience.
f) What is the ductility, in percent elongation?
Transcribed Image Text:Q2 :A specimen of ductile cast iron having a rectangular cross section of dimensions 4.8 mm * 15.9 mm (3/16 in. 5/8 in.) is deformed in tension. Using the load-elongation data tabulated below, complete problems (a) through (f). Load Length Ib in. 75.000 2.953 2.954 4,740 1,065 2,055 2,900 3,720 75.025 9,140 75.050 2.955 12,920 75.075 2.956 16,540 75.113 2.957 18,300 75.150 4.110 4,530 5,145 2.959 20,170 75.225 2.962 22,900 75.375 2.968 25,070 5,635 75.525 2.973 26,800 6,025 75.750 2.982 28,640 30,240 31,100 76.500 78.000 79.500 6,440 3.012 3.071 6,800 7,000 7,030 6,930 3.130 31,280 81.000 3.189 30,820 82.500 3.248 84.000 3.307 29,180 27,190 6,560 6,110 85.500 87.000 88.725 Freeture 3.366 3.425 5,430 4,265 24,140 18,970 3.493 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 of this alloy. e) Compute the modulus of resilience. f) What is the ductility, in percent elongation?
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