Answered: For a tensile test it can be shown that…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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For a tensile test it can be shown that the percent cold work (%CW) is related to strain according to the following relationship:

%CW=(εε+1) × 100

Using this equation, compute the percent cold work experienced by naval brass (for which the stress-strain behavior is shown in the Animated Figure 6.12) when a stress of 415 MPa (60190 psi) is applied.

Tensile strength
450 MPa (65,000 psi).
Strain = 0
%3D
Stress = 0 MPA
%3D
500
Stress = 0 psi
%3D
70
Strain = 0
Stress = 0 MPA
60
Stress = 0 psi
400
50
103 psi
40
MPа
Yield strength
250 MPa (36,000 psi)
40
300
200
30
200
30
100
10
100
10
to.obs
0.10
0.20
0.30
0.40
Strain
Stress (103 psi)
20
20
Stress (MPa)

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