A tensile test generates the stress-strain diagram shown here.600Stress (MPa)500400300200100T1T00.00Stress (MPa)0.045004003002001000.0000.08Young's modulus numeric value equal toYoung's modulus value obtain from0.002 0.004Yield strength numeric value equal toYield strength value obtain fromTensile strength numeric value equal toTensile strength value obtain fromStrainStrainAssume a tensile specimen was originally 10 cm long with 2 cm x 2 cm square shape cross section.0.1210.0060.160.20The change in sample length while a stress of 480 MPa is applied to a tensilespecimen[Choose ][Choose ][Choose ][Choose ][Choose ][Choose ][Choose ] [Choose ]510 MPa0.20 mdraw a line from 0.002 strain parallel to linear portion of the plot and intercept the plot400 MPanot changeslope of linear part of the plotmaximum strain510 GPa200 MPafinal fracture point of the curve300 GPadraw a line from 0.002 strain straight up (parallel to y axis) and intercept the plot300 MPa200 GPa0.1850.110400 GPalinear portion shift to curve line0.20 mm4

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Stress (MPa) 600 500 400 300 200 100 T 0 0.00 Stress (MPa) 0.04 500 400 300 200 100 0.000 0.08 0.002 0.004 Young's modulus numeric value equal to Young's modulus value obtain from Strain Yield strength numeric value equal to 0.12 0.006 Strain Assume a tensile specimen was originally 10 cm long with 2 cm x 2 cm square shape cross section. 0.16 0.20 [Choose ] [Choose ] [Choose ] <

Stress (MPa) 600 500 400 300 200 100 T 0 0.00 Stress (MPa) 0.04 500 400 300 200 100 0.000 0.08 0.002 0.004 Young's modulus numeric value equal to Young's modulus value obtain from Strain Yield strength numeric value equal to 0.12 0.006 Strain Assume a tensile specimen was originally 10 cm long with 2 cm x 2 cm square shape cross section. 0.16 0.20 [Choose ] [Choose ] [Choose ] <

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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Thermal Properties of Materials

In mechanical engineering, the thermal property is represented as the physical quantity that is relevant to the application of heat. The thermal properties are evaluated by variations in any specific material due to low heat or high heat. The quantities that influence the thermal property of the materials are mass, density, temperature, and many others.

Question

A tensile test generates the stress-strain diagram shown here.
600
Stress (MPa)
500
400
300
200
100
T
1
T
0
0.00
Stress (MPa)
0.04
500
400
300
200
100
0.000
0.08
Young's modulus numeric value equal to
Young's modulus value obtain from
0.002 0.004
Yield strength numeric value equal to
Yield strength value obtain from
Tensile strength numeric value equal to
Tensile strength value obtain from
Strain
Strain
Assume a tensile specimen was originally 10 cm long with 2 cm x 2 cm square shape cross section.
0.12
1
0.006
0.16
0.20
The change in sample length while a stress of 480 MPa is applied to a tensile
specimen
[Choose ]
[Choose ]
[Choose ]
[Choose ]
[Choose ]
[Choose ]
[Choose ]

[Choose ]
510 MPa
0.20 m
draw a line from 0.002 strain parallel to linear portion of the plot and intercept the plot
400 MPa
not change
slope of linear part of the plot
maximum strain
510 GPa
200 MPa
final fracture point of the curve
300 GPa
draw a line from 0.002 strain straight up (parallel to y axis) and intercept the plot
300 MPa
200 GPa
0.185
0.110
400 GPa
linear portion shift to curve line
0.20 mm
4

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The error in a measurement due to strain when using a tape measure depends on the material that it is made of. For a tape with a cross section of 10 mm by 0.7 mm, calculate how much error is introduced in inches into the measurement at a 300 ft length if the tape is pulled with 80 N and if the tape is made of: a) mild steel (E = 30 x 10^6 psi), b) polycrystalline aluminum (E = 10 x 10^6 psi) c) fiberglass composite (E = 3.5 x 10^6 psi in the long direction)
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