Compute the elongation, in %, of a cylindrical copper rod if it is cold worked such that the diameter is reduced from 15.9 mm to 10.4 mm

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
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Compute the elongation, in %, of a cylindrical copper rod if it is cold worked such that the diameter is reduced from 15.9 mm to 10.4 mm

Yield strength (psi x 10³)
120
100
80
60
40
20
0
1
10
20
1040 Steel
1
30 40
Percent cold work
Brass
:
Copper
800
700
600
500
400
300
200
100
1
1
50 60 70
field strength (MPa)
Tensile strength (psix 10³)
140
120
100
80
60
40
0
10
20 - 30
1040 Steel
40
Percent cold work
1
50
Brass
Copper
900
60 70
800
700
600
-500
400
300
200
Tensile strength (MPa)
u
Ductility (%EL)
70
60
50
40
20
10
0
0
Brass
1040 Steel
I
10
Copper
20
1
30 40
Percent cold work
50
60
70
Transcribed Image Text:Yield strength (psi x 10³) 120 100 80 60 40 20 0 1 10 20 1040 Steel 1 30 40 Percent cold work Brass : Copper 800 700 600 500 400 300 200 100 1 1 50 60 70 field strength (MPa) Tensile strength (psix 10³) 140 120 100 80 60 40 0 10 20 - 30 1040 Steel 40 Percent cold work 1 50 Brass Copper 900 60 70 800 700 600 -500 400 300 200 Tensile strength (MPa) u Ductility (%EL) 70 60 50 40 20 10 0 0 Brass 1040 Steel I 10 Copper 20 1 30 40 Percent cold work 50 60 70
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