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[15] A 3 mm diameter wire of material A is coated with a 0.5 mm layer...
(20%) Question 6. The elastic modulus, yield strength and ultimate strength of a certain material afe...
(20%) Question 6. The elastic modulus, yield strength and ultimate strength of a certain material afe 110 GPa 2400 MPa and 265 MPal respectively. If a cylindrical bar of this material 380 mm long is subjected to a uniaxial tension test and its length is increased by an amount áf O.50 mm under a tensile load ót 6660 N.At the same time its diameter decreased by0,28 mm Calculate; a) The initial diameter of the bar, (8%) d b) Under an...
(GPa) A cylindrical machine part 250 mm long with a diameter of 10 mm is subjected...
(GPa) A cylindrical machine part 250 mm long with a diameter of 10 mm is subjected to an axial load of 28,500 N. Using the list of materials shown in the table below, answer questions 1 through 2. Yield Strength Young's Modulus Material [MPa] Density (g/cm] Aluminum alloy 255 70 2.75 Steel alloy 400 207 7.85 Titanium alloy 800 110 4.50 Copper alloy 250 110 8.50 Brass alloy 340 100 8.40 1. If the elongation is not to exceed 0.6...
1.6 points) A tensile test specimen having a diameter of 10 mm and a gange length...
1.6 points) A tensile test specimen having a diameter of 10 mm and a gange length of 50 mm wa. tested to fracture. The stress-strain curve from the tension test is shown below. Labeling your points and showing the necessary steps, along with the corresponding calculations, find the following magnitudes: (a) Modulus of Elasticity, E = (b) Ultimate Strength = (e) Yield stress (0.2% offset method), (d) If the shear modulus of elasticity of the material is 28 GPa, determine...
1. A solid steel bar of diameter d; = 25.0 mm is enclosed by a steel...
1. A solid steel bar of diameter d; = 25.0 mm is enclosed by a steel tube of outer diameter d3 = 37.5 mm and inner diameter d2 = 30.0 mm (see figure). Both bar and tube are held rigidly by a support at end A and joined securely to a rigid plate at end B. The composite bar has a length L = 600 mm and is twisted Tube by a torque T = 400 N-m acting on the...
3 (15 points) A bent circular cantilever beam of uniform diameter of 25 mm is shown in igure below. The beam is made from a material with elastic modulus is 70 GPa, the tensile strength is 250 M...
3 (15 points) A bent circular cantilever beam of uniform diameter of 25 mm is shown in igure below. The beam is made from a material with elastic modulus is 70 GPa, the tensile strength is 250 MPa, and the ultimate strength is 300 MPa. 250 mm A. 150 mm z Zz. 50N V (z direction) 100 N (a) (5 points) What are the stresses in the beam at point A? (b) (10 points) Based on your calculations in (a),...
QUESTION 1 A semi-crystalline nylon with a degree of crystallinity of 25% has a density of 1.5 g/cm^3. Nylon has a crystalline density of 1.8 g/cm^3. What is its amorphous density in grams per centi...
QUESTION 1 A semi-crystalline nylon with a degree of crystallinity of 25% has a density of 1.5 g/cm^3. Nylon has a crystalline density of 1.8 g/cm^3. What is its amorphous density in grams per centimeters cubed? 1 points QUESTION 2 Which defect is NOT common between metals and polymers? tie molecules vacancies screw dislocations interstitial defects 0.5 points QUESTION 3 Which one is not a characteristic of a plastic polymer? a. Low stress but very large strains b. Tensile strength...
3. Power transmission is an important engineering application and relies on the integrity of the shaft designs. Assume a solid, circular steel shaft with a uniform diameter d 50 mm and a total le...
3. Power transmission is an important engineering application and relies on the integrity of the shaft designs. Assume a solid, circular steel shaft with a uniform diameter d 50 mm and a total length I3 m. At its midpoint, a belt passes over a pulley and delivers 50 kW power to the shaft. This power is used to drive two machines at either end of the shaft. Machine 1 consumes P1 20 kW and machine 2 uses P230 KW. The...
QuestioN1 You are workingon a team that is building a lightweight, remote-controlled aircraft wit...
QuestioN1 You are workingon a team that is building a lightweight, remote-controlled aircraft with the goal of lifting as much payload as possible. Your team has selected a design that will use a rectangular wing with a constant cross-section in the form of a high-lift airfoil. You are responsible for the initial sizing of the load carrying spar that runs the entire span of the wing. In flight, the spar acts much like a loaded cantilevered beam, as shown in...
A 3 m rigid bar AB is supported with a vertical translational spring at A and a pin at B The bar is subjected to a linearly varying distributed load with maximum intensity g Calculate the ver...
A 3 m rigid bar AB is supported with a vertical translational spring at A and a pin at B The bar is subjected to a linearly varying distributed load with maximum intensity g Calculate the vertical deformation of the spring if the spring constant is 700 kN/m. (ans: 21.43 mm) 2. A steel cable with a nominal diameter of 25 mm is used in a construction yard to lift a bridge section weighing 38 kN. The cable has an...
(20%) Question 6. The elastic modulus, yield strength and ultimate strength of a certain material afe 110 GPa 2400 MPa and 265 MPal respectively. If a cylindrical bar of this material 380 mm long is subjected to a uniaxial tension test and its length is increased by an amount áf O.50 mm under a tensile load ót 6660 N.At the same time its diameter decreased by0,28 mm Calculate; a) The initial diameter of the bar, (8%) d b) Under an...
(GPa) A cylindrical machine part 250 mm long with a diameter of 10 mm is subjected to an axial load of 28,500 N. Using the list of materials shown in the table below, answer questions 1 through 2. Yield Strength Young's Modulus Material [MPa] Density (g/cm] Aluminum alloy 255 70 2.75 Steel alloy 400 207 7.85 Titanium alloy 800 110 4.50 Copper alloy 250 110 8.50 Brass alloy 340 100 8.40 1. If the elongation is not to exceed 0.6...
1.6 points) A tensile test specimen having a diameter of 10 mm and a gange length of 50 mm wa. tested to fracture. The stress-strain curve from the tension test is shown below. Labeling your points and showing the necessary steps, along with the corresponding calculations, find the following magnitudes: (a) Modulus of Elasticity, E = (b) Ultimate Strength = (e) Yield stress (0.2% offset method), (d) If the shear modulus of elasticity of the material is 28 GPa, determine...
1. A solid steel bar of diameter d; = 25.0 mm is enclosed by a steel tube of outer diameter d3 = 37.5 mm and inner diameter d2 = 30.0 mm (see figure). Both bar and tube are held rigidly by a support at end A and joined securely to a rigid plate at end B. The composite bar has a length L = 600 mm and is twisted Tube by a torque T = 400 N-m acting on the...
3 (15 points) A bent circular cantilever beam of uniform diameter of 25 mm is shown in igure below. The beam is made from a material with elastic modulus is 70 GPa, the tensile strength is 250 MPa, and the ultimate strength is 300 MPa. 250 mm A. 150 mm z Zz. 50N V (z direction) 100 N (a) (5 points) What are the stresses in the beam at point A? (b) (10 points) Based on your calculations in (a),...
3. Power transmission is an important engineering application and relies on the integrity of the shaft designs. Assume a solid, circular steel shaft with a uniform diameter d 50 mm and a total length I3 m. At its midpoint, a belt passes over a pulley and delivers 50 kW power to the shaft. This power is used to drive two machines at either end of the shaft. Machine 1 consumes P1 20 kW and machine 2 uses P230 KW. The...
QuestioN1 You are workingon a team that is building a lightweight, remote-controlled aircraft with the goal of lifting as much payload as possible. Your team has selected a design that will use a rectangular wing with a constant cross-section in the form of a high-lift airfoil. You are responsible for the initial sizing of the load carrying spar that runs the entire span of the wing. In flight, the spar acts much like a loaded cantilevered beam, as shown in...
A 3 m rigid bar AB is supported with a vertical translational spring at A and a pin at B The bar is subjected to a linearly varying distributed load with maximum intensity g Calculate the vertical deformation of the spring if the spring constant is 700 kN/m. (ans: 21.43 mm) 2. A steel cable with a nominal diameter of 25 mm is used in a construction yard to lift a bridge section weighing 38 kN. The cable has an...
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