COLLEGE PHYSICS
COLLEGE PHYSICS
2nd Edition
ISBN: 9781464196393
Author: Freedman
Publisher: MAC HIGHER
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Chapter 9, Problem 37QAP
To determine

(a)

What is the yield strength if the following data are associated with an alloy of steel, plot a graph of stress versus strain for the alloy?

    Strain (%)Stress ( 109N/m2)Strain (%)Stress ( 109N/m2)
    001300
    0.11251.5325
    0.22502350
    0.32302.5375
    0.42303400
    0.52353.5375
    0.62404350
    0.72504.5325
    0.82605300
    0.9270

Expert Solution
Check Mark

Answer to Problem 37QAP

The yield strength is the tensile stress at which the material becomes permanently deformed =250×109N/m2

Explanation of Solution

Calculation:

The graph is drawn and is given by

COLLEGE PHYSICS, Chapter 9, Problem 37QAP , additional homework tip  1

The yield strength is the tensile stress at which the material becomes permanently deformed =250×109N/m2

Conclusion:

The yield strength is the tensile stress at which the material becomes permanently deformed =250×109N/m2

To determine

(b)

The ultimate strength if the following data are associated with an alloy of steel, plot a graph of stress versus strain for the alloy?

    Strain (%)Stress ( 109N/m2)Strain (%)Stress ( 109N/m2)
    001300
    0.11251.5325
    0.22502350
    0.32302.5375
    0.42303400
    0.52353.5375
    0.62404350
    0.72504.5325
    0.82605300
    0.9270

Expert Solution
Check Mark

Answer to Problem 37QAP

The ultimate strength is the maximum tensile stress the material can withstand =400×109N/m2

Explanation of Solution

Calculation:

The graph is drawn and is given by

COLLEGE PHYSICS, Chapter 9, Problem 37QAP , additional homework tip  2

The ultimate strength is the maximum tensile stress the material can withstand =400×109N/m2

Conclusion:

The ultimate strength is the maximum tensile stress the material can withstand =400×109N/m2

To determine

(c)

Young's modulus for the material if the following data are associated with an alloy of steel, plot a graph of stress versus strain for the alloy?

    Strain (%)Stress ( 109N/m2)Strain (%)Stress ( 109N/m2)
    001300
    0.11251.5325
    0.22502350
    0.32302.5375
    0.42303400
    0.52353.5375
    0.62404350
    0.72504.5325
    0.82605300
    0.9270

Expert Solution
Check Mark

Answer to Problem 37QAP

The Young's modulus is the slope of the initial linear region =125000×109N/m2

Explanation of Solution

Given info:

Formula used:

Calculation:

The graph is drawn and is given by

COLLEGE PHYSICS, Chapter 9, Problem 37QAP , additional homework tip  3

The Young's modulus is the slope of the initial linear region =125000×109N/m2

Conclusion:

The Young's modulus is the slope of the initial linear region =125000×109N/m2

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An Introduction to Stress and Strain; Author: The Efficient Engineer;https://www.youtube.com/watch?v=aQf6Q8t1FQE;License: Standard YouTube License, CC-BY