Question
In: Mechanical Engineering
10 cm of copper with square cross section of 1x1 cm exposed to 200 KN tension...
10 cm of copper with square cross section of 1x1 cm exposed to
200 KN tension force
caused 15% permanent reduction in cross section area , if
the fracture got on this point,
calculate the following:
1 – the ductility
2 – stress
3 – true stress
4- fracture stress
Solutions
Expert Solution
A0 = 1 cm2
L0 = 10 cm
Af = 0.85 cm2
For a tensile specimen volume will be constant.
A0*L0 = Af*Lf
1*10 = 0.85*Lf
Lf = 11.77 cm
1 – the ductility
Ductility is the strain at fracture. or percentage elongation at fracture.
2 –
stress
3 – true
stress
true stress at fracture. area at fracture i considered.
4- fracture
stress
Fracture stress is the stress at which fracture occurs. As from the question fracture happens when 200 kN force is getting applied. So it will be equal to engineering stress at this point. That is force/initial area
= 200000/100 mm2 = 2000 N/mm2 = 2000 MPa
If you have any doubt please comment. I will reply ASAP
If you find my answer useful please give me a thumbsup. It will be helpful for beginers like me
samet mamat answered 2 years agoRelated Solutions
A column is to support a statue concentrically that weighs 200 kN. The cross section of...
A column is to support a statue concentrically that weighs 200
kN. The cross section of the column is a regular hexagon with a
hole in its center. The diameter of the hole is 75mm. If the stress
in the column is limited to 250 MPa, what is the measure of one
side of the hexagon? Answer should be in mm.
6. Mike Faraday folds 4 meters of copper wire (cross-section 10-7 m2) into a square and...
6. Mike Faraday folds 4 meters of copper wire (cross-section
10-7 m2) into a square and holds it in a uniform magnetic field of
strength 2.0 Tesla. The field passes directly through the
“circuit”—pointing towards Mike’s face as he looks down at his
square. a) Over what time interval should Mike’s assistant crank up
the field to 5.0 Tesla if Mike hopes to achieve a current of 0.5 A?
b) Will Mike observe a clockwise current or a counterclockwise
current?
2: Results obtained from a tension test on a bar of uniform cross section 10 mm...
2:
Results obtained from a tension test on a bar of uniform cross
section 10 mm x 10 mm subjected to an axial pull of 8000 N were
tabulated. The lateral dimensions of the bar were found to be
changed to 9.9985 mm x 9.9985 mm while using a material having
modulus of rigidity equal to 0.8 x 107 N/cm2. By determining the
values for different moduli, identify the properties of material
and establish the relationship between them. What changes...
Results obtained from a tension test on a bar of uniform cross section 10 mm x...
Results obtained from a tension test on a bar of
uniform cross section 10 mm x 10 mm subjected to an axial pull of
8000 N were tabulated. The lateral dimensions of the bar were found
to be changed to 9.9985 mm x 9.9985 mm while using a material
having modulus of rigidity equal to 0.8 x 107 N/cm2. By determining
the values for different moduli, identify the properties of
material and establish the relationship between them. What changes
will...
Results obtained from a tension test on a bar of uniform cross section 10 mm x...
Results obtained from a tension test on a bar of uniform cross
section 10 mm x 10 mm subjected to an axial pull of 8000 N were
tabulated. The lateral dimensions of the bar were found to be
changed to 9.9985 mm x 9.9985 mm while using a material having
modulus of rigidity equal to 0.8 x 107 N/cm2. By determining the
values for different moduli, identify the properties of material
and establish the relationship between them. What changes will...
Results obtained from a tension test on a bar of uniform cross section 10 mm x...
Results obtained from a tension test on a bar of uniform cross
section 10 mm x 10 mm
subjected to an axial pull of 8000 N were tabulated. The lateral
dimensions of the bar were found
to be changed to 9.9985 mm x 9.9985 mm while using a material
having modulus of rigidity equal
to 0.8 x 107 N/cm2. By determining the values for different moduli,
identify the properties of
material and establish the relationship between them. What changes
will...
Results obtained from a tension test on a bar of uniform cross section 10 mm x...
Results obtained from a tension test on a bar of
uniform cross section 10 mm x 10 mm subjected to an axial pull of
8000 N were tabulated. The lateral dimensions of the bar were found
to be changed to 9.9985 mm x 9.9985 mm while using a material
having modulus of rigidity equal to 0.8 x 107 N/cm2. By determining
the values for different moduli, identify the properties of
material and establish the relationship between them. What changes
will...
An axial pull of 45 kN is applied on the three bars of varying cross section...
An axial pull of 45 kN is applied on the three bars of
varying cross section and connected to
each other as shown in figure. Two outer steel bars are of same
length and diameter, but the
middle bar made up of brass having cross sectional dimensions 20 mm
x 20 mm. The length of the
middle bar used was 4 times more than that of the two outer bars
and stress in the two outer
portion were found to...
The resistance of a very fine aluminum wire with a 10 μm × 10 μm square cross section is 1200 Ω
1. The resistance of a very fine aluminum wire with a 10 μm × 10 μm square cross section is 1200 Ω . A 1200 Ω resistor is made by wrapping this wire in a spiral around a 3.4-mm-diameter glass core.
Part A: How many turns of wire are needed? Express your answer using two significant figures.
2.The starter motor of a car engine draws a current of 180 A from the battery. The copper wire to the motor...
The resistance of a very fine aluminum wire with a 10 μm × 10 μm square cross section is 1200 Ω .
1. The resistance of a very fine aluminum wire with a 10 μm × 10 μm square cross section is 1200 Ω . A 1200 Ω resistor is made by wrapping this wire in a spiral around a 3.4-mm-diameter glass core.
Part A: How many turns of wire are needed? Express your answer using two significant figures.
2. What is the resistance of A 50.0 cm long piece of carbon with a 0.900 mm ×× 0.900 mm square cross...
ADVERTISEMENT
ADVERTISEMENT
Latest Questions
- Convert the following numbers as indicated. Use as few digits in the results as necessary or...
- Java program to implement the merge sort your own and test it to sort a list...
- CODE IN C++ PLEASE Write a program to implement the algorithm that you designed in Exercise...
- Show your work please What is the discount yield, bond equivalent yield, and effective annual return...
- Case 7 of the textbook examines the rise of Wal-Mart as a corporate bohemoth. One of...
- The type of listening that involves trying to understand a situation from the speaker’s perspective is...
- Based on the loanable funds theory, explain how each of the following changes should impact interest...
ADVERTISEMENT