10.1. A 0.505-in-diameter mild steel specimen was tested to failure in a tensilé tëstihg fma- chine by slowly pulling it apart with a steadily increasing force. Deformation (elonga- tion) of the specimen was measured at force intervals of 1000 lb until the specimen failed. The initial gauge length of the specimen was 2.00 in. Observed data are provided in Table E10.1. (a) Calculate the stress and strain at each force interval. (b) Plot a graph of the stress-strain curve. (c) Estimate the yield point of the steel. Note its location on the curve. (d) Estimate the ultimate strength of the steel. Note its location on the curve.
10.1. A 0.505-in-diameter mild steel specimen was tested to failure in a tensilé tëstihg fma- chine by slowly pulling it apart with a steadily increasing force. Deformation (elonga- tion) of the specimen was measured at force intervals of 1000 lb until the specimen failed. The initial gauge length of the specimen was 2.00 in. Observed data are provided in Table E10.1. (a) Calculate the stress and strain at each force interval. (b) Plot a graph of the stress-strain curve. (c) Estimate the yield point of the steel. Note its location on the curve. (d) Estimate the ultimate strength of the steel. Note its location on the curve.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Calculate the stress and strain at each force interval. Plot a graph of the stress-strain curve. Estimate the yield point of the steel and note its location on the curve. Estimate the ultimate strength of the steel and note its location on the curve.
Transcribed Image Text:10.1. A 0.505-in-diameter mild steel specimen was tested to failure in a tensile testing ma-
chine by slowly pulling it apart with a steadily increasing force. Deformation (elonga-
tion) of the specimen was measured at force intervals of 1000 lb until the specimen
failed. The initial gauge length of the specimen was 2.00 in. Observed data are provided
in Table E10.1.
(a) Calculate the stress and strain at each force interval.
(b) Plot a graph of the stress-strain curve.
(c) Estimate the yield point of the steel. Note its location on the curve.
(d) Estimate the ultimate strength of the steel. Note its location on the curve.
Table E10.1 TENSILE TEST OF MILD STEEL: OBSERVED DATA
Force
Deformation
Force
Deformation
(Ib)
(in)
(lb)
(in)
10 000
0.1170
1 000
0.0004
11 000
0.1555
2 000
0.0007
12 000
0.1705
3 000
0.0011
13 000
0.1875
4 000
0.0014
14 000
0.2058
5 000
0.0017
15 000
0.2380
6 000
0.0021
16 000
0.2710
7 000
0.0024
16 200
0.2982
8 000
0.0032
15 000
0.3570
9 000
0.0748
14 100
Fracture
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