1. A Record of All Measurements Made
Steel
Aluminum
Gauge
Length
(Lo)
Diameter
(Do)
Length
at
Failure
(Lf)
Diameter
(Df)
Guage
Length
(Lo)
Diameter
(Do)
Length
At
Failure
(Lf)
Diameter
(Df)
16.41
4.52
19.81
3.45
22.70
6.33
25.28
5.45
Measure 2 16.48
Measure 3 16.46
Average
16.45
4.51
4.52
4.52
19.35
19.28
19.48
3.44
3.38
3.42
22.74
22.69
22.71
6.31
6.33
6.32
25.29
25.96
25.51
5.38
5.45
5.43
Measure1
2.
Calculated Ductility Steel
= (16.046-9.186/16.046) x 100%
=42.75%
Calculated Ductility Aluminum
= (31.371-23.157/31.371) x 100%
= 26.18%
Youngs Modulus Steel: 15115 N/mm^2
- 123.83
Linear Portion of Eng Steel Graph y = 15115x
R² = 0.9101
800
700
600
Stress
500
400
300
200
100
0
-100 0
-200
0.01
0.02
0.03
Strain
0.04
0.05
Youngs Modulus Aluminum: 28520 N/mm^2
Linear Portion of Eng Aluminum
y = 28520x + 79.285
R² = 0.9911
300.0000
250.0000
Stress
200.0000
150.0000
100.0000
50.0000
0.0000
0.000000
0.001000
0.002000
0.003000
0.004000
Strain
0.005000
0.006000
0.007000
0.008000
3.
Steel: Eng and True Stress vs. Strain Chart
Eng Stress vs. Eng Strain
1200
True Stress vs. True Strain
1000
Stress
800
600
400
200
0
0
0.05
0.1
0.15
Strain
0.2
0.25
Aluminum: Eng and True Stress vs. Strain Chart
400.0000
Eng Stress vs. Eng Strain
True Stress vs. True Strain
350.0000
300.0000
Stress
250.0000
200.0000
150.0000
100.0000
50.0000
0.0000
0.000000 0.020000 0.040000 0.060000 0.080000 0.100000 0.120000 0.140000 0.160000
Strain