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plot For a steel bolt which has been tightened to the point where a tensile stress...
A H.R. Steel is subjected to a tension test at room temperature. Its tensile strength (max....
A H.R. Steel is subjected to a tension test at room temperature. Its tensile strength (max. strength) occurs at 100 MPa at strain of 0.3. Determine the true stress when the engineering strain is 0.4. The true stress-true strain of this steel follows the power law relationship σ-K (E)
References Tensile strength 450 MPa (65,000 psi) Strain = 0 Stress = 0 MPA Stress =...
References Tensile strength 450 MPa (65,000 psi) Strain = 0 Stress = 0 MPA Stress = 0 psi 500 1 Strain = 0 Stress = 0 MPA Stress = 0 psi 103 psi 40 MPa 300 Yield strength 250 MPa (36,000 psi) 200 - 30 Stress (MPa) 2001 Stress (10 psi) 100% okuloobs 0.10 0.20 0.30 Strain References Brinell hardness number = 0 BHN Rockwell hardness = ... Rockwell hardness Tensile strength = 0 MPA Tensile strength = 0 ksi...
Animated Figure 9.41 shows a plot of the logarithm stress versus the Larson-Miller parameter for an...
Animated Figure 9.41 shows a plot of the logarithm stress versus
the Larson-Miller parameter for an S-590 alloy. A component made of
this alloy must have a creep rupture lifetime of at least 20 days
at 750°C (1023 K). Compute the maximum allowable stress level in
MPa.
Larson-Miller parameter 12- 103 (R-h) 103 T(20 + log ir)("R-h) Larson-Miller parameter 2.2- 10s (K-h) Stress 6.9 MPA Stress 1 105 psi 25 30 35 4045 50 1000 100 100 CD 10 9...
1-Determine the % elongation, yield stress and ultimate tensile strength of the material tested above 2-Calculate...
1-Determine the % elongation, yield stress and ultimate tensile
strength of the material tested above
2-Calculate the elastic modulus of the material tested above
3-If a 200mm cylindrical rod of the material tested above, with
radius 20mm, was subjected to a tensile load of 200kN, what would
the length be?
4-An underground wastewater steel pipe with 2mm walls carries an
ammonia solution of 40 g/m3. The pipe is in contact with
groundwater (assume 0 g/m3 ammonia). Determine the
diffusion rate...
A metal rod, which is part of a remote manipulator assembly, is sed for transferring components b...
A metal rod, which is part of a remote manipulator assembly, is sed for transferring components between loadlocks in a high temperature processing facility. The rod material was selected so that it could sustain a tensile stress, σ of 100 MPa at 650°C. Under these conditions, the steady state creep rate is 107s1. Recent modifications to the facility have now resulted in the rod, for 50% of the operating time, being subjected to a stress and temperature of 150 MPa...
A metal rod, which is part of a remote manipulator assembly, is used for transferring components ...
A metal rod, which is part of a remote manipulator assembly, is used for transferring components between loadlocks in a high temperature processing facility. The rod material was selected so that it could sustain a tensile stress, σ, of 100 MPa at 650°C, Under these conditions, the steady state creep rate is 107s1. Recent modifications to the facility have now resulted in the rod, for 50% of the operating time, being subjected to a stress and temperature of 150 MPa...
Question 2. (Total 18 marks) 350 350 300 300 Same plot, but with expanded x axis...
Question 2. (Total 18 marks) 350 350 300 300 Same plot, but with expanded x axis 250 250 200 Stress (MPa) Stress (MPa) 150 $150 100 100 0 0 0 0.02 0.04 0.06 0.12 0.14 0.16 0.18 0 0.08 0.1 Strain 0.001 0.002 0.003 0.004 0.005 0.006 0.007 0.008 0.009 0.01 Strain (a) Determine the % elongation, yield stress and ultimate tensile strength of the material tested above (3 marks) (b) Calculate the elastic modulus of the material tested above...
Refer to the following figure, stress-strain diagram, for samples of three different materials: A, B, and...
Refer to the following figure, stress-strain diagram,
for samples of three different materials: A, B, and C. The end of
each curve indicates the fracture point.
e) After the conclusion of the tests, if the broken halves of each
sample were fitted back together, which sample would be the
shortest? Assume that all three samples had the same initial
length. f) A circular rod is to be produced, 15 cm long with a
diameter of 5.0 mm. This rod must...
HW3.3. A cylindrical steel pipe is used to carry water steam with an averaged heat transfer...
HW3.3. A cylindrical steel pipe is used to carry water steam with an averaged heat transfer coefficient of h 150 W/m2-K at Ti- 100 °C. The steel pipe goes through the roof of a factory where the ambient temperature is 23°C (To), with a natural heat convection coefficient of 5 W/m2-K. The inner and outer diameters of the steel pipe are 2 cm and 2.2 cm, respectively, and thermal conductivity of the steep pipe is k, -20 W/m-K To prevent...
A final height of 24.4 A 88.9 mm diameter by 133.35 mm height AZ31B billet is forged t mm at a co...
a final height of 24.4 A 88.9 mm diameter by 133.35 mm height AZ31B billet is forged t mm at a constant strain rate of 0.01 s1 at temperatures between 250 °C - 400 °C The stress strain characteristics of AZ31 material at these different temperatures at the strain rate 0.01 s, are given in Figure below. a) Estimate the force required for forging at two temperatures 250 °C- 400 °C under conditions of: sliding fraction with μ-0.2 and sticking...
A H.R. Steel is subjected to a tension test at room temperature. Its tensile strength (max. strength) occurs at 100 MPa at strain of 0.3. Determine the true stress when the engineering strain is 0.4. The true stress-true strain of this steel follows the power law relationship σ-K (E)
References Tensile strength 450 MPa (65,000 psi) Strain = 0 Stress = 0 MPA Stress = 0 psi 500 1 Strain = 0 Stress = 0 MPA Stress = 0 psi 103 psi 40 MPa 300 Yield strength 250 MPa (36,000 psi) 200 - 30 Stress (MPa) 2001 Stress (10 psi) 100% okuloobs 0.10 0.20 0.30 Strain References Brinell hardness number = 0 BHN Rockwell hardness = ... Rockwell hardness Tensile strength = 0 MPA Tensile strength = 0 ksi...
Animated Figure 9.41 shows a plot of the logarithm stress versus
the Larson-Miller parameter for an S-590 alloy. A component made of
this alloy must have a creep rupture lifetime of at least 20 days
at 750°C (1023 K). Compute the maximum allowable stress level in
MPa.
Larson-Miller parameter 12- 103 (R-h) 103 T(20 + log ir)("R-h) Larson-Miller parameter 2.2- 10s (K-h) Stress 6.9 MPA Stress 1 105 psi 25 30 35 4045 50 1000 100 100 CD 10 9...
1-Determine the % elongation, yield stress and ultimate tensile
strength of the material tested above
2-Calculate the elastic modulus of the material tested above
3-If a 200mm cylindrical rod of the material tested above, with
radius 20mm, was subjected to a tensile load of 200kN, what would
the length be?
4-An underground wastewater steel pipe with 2mm walls carries an
ammonia solution of 40 g/m3. The pipe is in contact with
groundwater (assume 0 g/m3 ammonia). Determine the
diffusion rate...
A metal rod, which is part of a remote manipulator assembly, is sed for transferring components between loadlocks in a high temperature processing facility. The rod material was selected so that it could sustain a tensile stress, σ of 100 MPa at 650°C. Under these conditions, the steady state creep rate is 107s1. Recent modifications to the facility have now resulted in the rod, for 50% of the operating time, being subjected to a stress and temperature of 150 MPa...
A metal rod, which is part of a remote manipulator assembly, is used for transferring components between loadlocks in a high temperature processing facility. The rod material was selected so that it could sustain a tensile stress, σ, of 100 MPa at 650°C, Under these conditions, the steady state creep rate is 107s1. Recent modifications to the facility have now resulted in the rod, for 50% of the operating time, being subjected to a stress and temperature of 150 MPa...
Question 2. (Total 18 marks) 350 350 300 300 Same plot, but with expanded x axis 250 250 200 Stress (MPa) Stress (MPa) 150 $150 100 100 0 0 0 0.02 0.04 0.06 0.12 0.14 0.16 0.18 0 0.08 0.1 Strain 0.001 0.002 0.003 0.004 0.005 0.006 0.007 0.008 0.009 0.01 Strain (a) Determine the % elongation, yield stress and ultimate tensile strength of the material tested above (3 marks) (b) Calculate the elastic modulus of the material tested above...
Refer to the following figure, stress-strain diagram,
for samples of three different materials: A, B, and C. The end of
each curve indicates the fracture point.
e) After the conclusion of the tests, if the broken halves of each
sample were fitted back together, which sample would be the
shortest? Assume that all three samples had the same initial
length. f) A circular rod is to be produced, 15 cm long with a
diameter of 5.0 mm. This rod must...
HW3.3. A cylindrical steel pipe is used to carry water steam with an averaged heat transfer coefficient of h 150 W/m2-K at Ti- 100 °C. The steel pipe goes through the roof of a factory where the ambient temperature is 23°C (To), with a natural heat convection coefficient of 5 W/m2-K. The inner and outer diameters of the steel pipe are 2 cm and 2.2 cm, respectively, and thermal conductivity of the steep pipe is k, -20 W/m-K To prevent...
a final height of 24.4 A 88.9 mm diameter by 133.35 mm height AZ31B billet is forged t mm at a constant strain rate of 0.01 s1 at temperatures between 250 °C - 400 °C The stress strain characteristics of AZ31 material at these different temperatures at the strain rate 0.01 s, are given in Figure below. a) Estimate the force required for forging at two temperatures 250 °C- 400 °C under conditions of: sliding fraction with μ-0.2 and sticking...
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