Steel Design (Activate Learning wi...

6th Edition
Segui + 1 other
ISBN: 9781337094740



Steel Design (Activate Learning wi...

6th Edition
Segui + 1 other
ISBN: 9781337094740
Textbook Problem

A tensile test was performed on a metal specimen having a circular cross section with a diameter 0. 510 inch. For each increment of load applied, the strain was directly determined by means of a strain gage attached to the specimen. The results are, shown in Table: 1.5.1.

a. Prepare a table of stress and strain.

b. Plot these data to obtain a stress-strain curve. Do not connect the data points; draw a best-fit straight line through them.

c. Determine the modulus of elasticity as the slope of the best-fit line.

To determine


The stress and strain values.



The diameter of metal specimen is 0.510inch.

Concept Used:

Write the equation of tensile stress.

f=PA      ...... (I)

Here, tensile stress is f, load is P and the cross-sectional area is A.


Calculate the cross-sectional area.

A=π4×d2      ...... (II).

Here, the diameter of metal specimen is d.

Substitute 0.510inch for d in Equation (II).


Calculate the stress value corresponding to load and the cross-sectional area.

The following table shows the stress value.

LoadP(lb) Strain






0 0 f=00.2042 0
250 37.1 f=2500.2042 1224.28
500 70.3 f=5000.2042 2448.57
1000 129.1 f=10000.2042 4897.15
1500 230
To determine


The plot of the stress-strain curve.

To determine


The modulus of elasticity from the slope of best-fit line.

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