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5. (4 marks). Based on Chapter 4. An aluminium strip (2 cm thick and 100 cm...
Problem 2 (20 pts): Determine the range of acceptable initial thicknesses for a cold rolled plate...
Problem 2 (20 pts): Determine the range of acceptable initial thicknesses for a cold rolled plate with a final thickness of 0.5 cm having at least 65,000 psi tensile strength, 60,000 psi yield strength, and 5% elongation. [Hint: Assume a constant or infinite width.] 1 100 90 80 -70 60 100,000 90,000 a) Illustrate how you use the chart for this problem (4 pts) 70,0001-ensile strength 60,000 50,000 40,00아 Yield strength50 -40 30 20 10 30,000 20,000 10,000 % Elongation...
UTS Yield and Ultimate Strength (ksi) Elongation (%) Elongation 0% 20% 60% 80% 40% % CW...
UTS Yield and Ultimate Strength (ksi) Elongation (%) Elongation 0% 20% 60% 80% 40% % CW a. The range in %CW where a bar of this material will have a % elongation of at least 15 and tensile strength greater than 120 ksi. Show your construction on the figure. b. What is the final diameter of a bar that starts at 1.2 inch diameter that will meet the property specification given above? C. This material is rolled from 1" to...
The figure shown below shows the effect of cold-working on the mechanical properties of brass (70%...
The figure shown below shows the effect of cold-working on the mechanical properties of brass (70% copper and 30% zinc). A brass wire is to be cold-worked by drawing from 15mm to 11mm (You did this calculation in question 1 already). What are the tensile strength, yield strength and ductility (in % elongation) of this wire after being cold-drawn? (6 points) 2 800 0 700 600 60 S 500 40 O 400 30 300 20 5 200 10 100 10...
Summer 2 Name: Question 3: (10 points) A cylindrical specimen of cold-worked copper has ductility (%EL)...
Summer 2 Name: Question 3: (10 points) A cylindrical specimen of cold-worked copper has ductility (%EL) of 30%. (a) If its cold worked radius is 6.4 mm, what was its radius before deformation? (b)What are its tensile and yield strengths? 140 120 800 900 1040 Steel 1040 S 700 800 100 120 600 a700 80 100 E 500 600 400 Br Brass 500 300 Capper 40 400 200 Capper 300 20 100 200 10 20 30 40 50 70 10...
28. It is necessary to seleet a metal allo y for an application that requires a...
28. It is necessary to seleet a metal allo y for an application that requires a yield strength of at least 300 MPa while maintaininga minimum ductility ( % EL) of 15%. ( 12 points) 120 800 1040 Steel Brass Coppert 4o 107040 Shee 100 o 10 20 30 40 50 60 70 Percent cold work 10 20 30 40 50 60 7 Percent cold work a) If the metal may be cold worked, decide which of the followi ng...
7. The yield stress of a tension specimen machined from a 2-m wide by 0.6-cm thick...
7. The yield stress of a tension specimen machined from a 2-m wide by 0.6-cm thick copper sheet is 145 MPa. The sheet is rolled further with an applied tensile force in the plane of the sheet of 0.22 MN. What roll pressure is needed to just cause yielding? You may ignore friction between the metal and the rolls. For rolling, the deformation occurs by plane-strain in which there is no increase in the width of the sheet. You may...
Question 4: A cylindrical specimen of cold-worked copper has a ductility (%EL) of 25% What is its tensile strength? (a...
Question 4: A cylindrical specimen of cold-worked copper has a ductility (%EL) of 25% What is its tensile strength? (a) (b) If its cold-worked radius is 10 mm, what was its radius before deformation? 70 140 120 900 800 1040 Steel 60 120 1040 Stee 800 700 100 50 700 600 100 80 40 600 500 Brass Brass 80 30 60 400 500 Brass 20 Copper 40 300 60 400 Copper 10 1040 Stee 200 300 40 20 Copper 100...
this all of it !!! 4. Two previously undeformed specimens of the same metal are to...
this all of it !!!
4. Two previously undeformed specimens of the same metal are to be plastically deformed by reducing their cross-sectional areas. One has a circular cross section, and the other is rectangular during deformation the circular cross section is to remain circular, and the rectangular is to remain as such. Their original and deformed dimensions are as follows: Rectangular (mm) Circular (diameter, mm) 125x 175 15.2 Original dimensions 7.5x 200 Deformed dimensions 11.4 Which of these specimens...
need solution for milestones A Q1 Solid Mechanics 3 Assessment Task 1a - 2020 Milestone a...
need solution for milestones A Q1
Solid Mechanics 3 Assessment Task 1a - 2020 Milestone a Question 1. For each of the plane-stress conditions given below, construct a Mohr's circle of stress, find the principal stresses and the orientation of the principal axes relative to the xy axes and determine the stresses on an element, rotated in the x-y plane 60° counterclockwise from its original position: (a) dx = 200 MPa Oy - 300 MPa T .40 MPa (b) dx...
Problem 2 (20 pts): Determine the range of acceptable initial thicknesses for a cold rolled plate with a final thickness of 0.5 cm having at least 65,000 psi tensile strength, 60,000 psi yield strength, and 5% elongation. [Hint: Assume a constant or infinite width.] 1 100 90 80 -70 60 100,000 90,000 a) Illustrate how you use the chart for this problem (4 pts) 70,0001-ensile strength 60,000 50,000 40,00아 Yield strength50 -40 30 20 10 30,000 20,000 10,000 % Elongation...
UTS Yield and Ultimate Strength (ksi) Elongation (%) Elongation 0% 20% 60% 80% 40% % CW a. The range in %CW where a bar of this material will have a % elongation of at least 15 and tensile strength greater than 120 ksi. Show your construction on the figure. b. What is the final diameter of a bar that starts at 1.2 inch diameter that will meet the property specification given above? C. This material is rolled from 1" to...
The figure shown below shows the effect of cold-working on the mechanical properties of brass (70% copper and 30% zinc). A brass wire is to be cold-worked by drawing from 15mm to 11mm (You did this calculation in question 1 already). What are the tensile strength, yield strength and ductility (in % elongation) of this wire after being cold-drawn? (6 points) 2 800 0 700 600 60 S 500 40 O 400 30 300 20 5 200 10 100 10...
Summer 2 Name: Question 3: (10 points) A cylindrical specimen of cold-worked copper has ductility (%EL) of 30%. (a) If its cold worked radius is 6.4 mm, what was its radius before deformation? (b)What are its tensile and yield strengths? 140 120 800 900 1040 Steel 1040 S 700 800 100 120 600 a700 80 100 E 500 600 400 Br Brass 500 300 Capper 40 400 200 Capper 300 20 100 200 10 20 30 40 50 70 10...
28. It is necessary to seleet a metal allo y for an application that requires a yield strength of at least 300 MPa while maintaininga minimum ductility ( % EL) of 15%. ( 12 points) 120 800 1040 Steel Brass Coppert 4o 107040 Shee 100 o 10 20 30 40 50 60 70 Percent cold work 10 20 30 40 50 60 7 Percent cold work a) If the metal may be cold worked, decide which of the followi ng...
7. The yield stress of a tension specimen machined from a 2-m wide by 0.6-cm thick copper sheet is 145 MPa. The sheet is rolled further with an applied tensile force in the plane of the sheet of 0.22 MN. What roll pressure is needed to just cause yielding? You may ignore friction between the metal and the rolls. For rolling, the deformation occurs by plane-strain in which there is no increase in the width of the sheet. You may...
Question 4: A cylindrical specimen of cold-worked copper has a ductility (%EL) of 25% What is its tensile strength? (a) (b) If its cold-worked radius is 10 mm, what was its radius before deformation? 70 140 120 900 800 1040 Steel 60 120 1040 Stee 800 700 100 50 700 600 100 80 40 600 500 Brass Brass 80 30 60 400 500 Brass 20 Copper 40 300 60 400 Copper 10 1040 Stee 200 300 40 20 Copper 100...
this all of it !!!
4. Two previously undeformed specimens of the same metal are to be plastically deformed by reducing their cross-sectional areas. One has a circular cross section, and the other is rectangular during deformation the circular cross section is to remain circular, and the rectangular is to remain as such. Their original and deformed dimensions are as follows: Rectangular (mm) Circular (diameter, mm) 125x 175 15.2 Original dimensions 7.5x 200 Deformed dimensions 11.4 Which of these specimens...
need solution for milestones A Q1
Solid Mechanics 3 Assessment Task 1a - 2020 Milestone a Question 1. For each of the plane-stress conditions given below, construct a Mohr's circle of stress, find the principal stresses and the orientation of the principal axes relative to the xy axes and determine the stresses on an element, rotated in the x-y plane 60° counterclockwise from its original position: (a) dx = 200 MPa Oy - 300 MPa T .40 MPa (b) dx...
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