Please describe in depth how grain size affects the mechanical properties of materials.
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A: Solution:
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- Using a stress-strain diagram, analyze and compare the mechanical properties of cast iron, mild steel and glass materialsBuild a table with all the mechanical properties presented and discussed in Callister and in the video classes. In the first column, indicate the properties (examples: Modulus of Elasticity, Poisson's Ratio, Tenacity, Ductility, Fracture Tenacity, Flow Stress, etc.) and in the second column explain each one. (maximum one page)Draw two schematic graphs using pencil showing a typical stress-strain curve for aluminum. The first graph should show engineering stress vs engineering strain, and the second graph should show true stress vs true strain. Label the showing: (i) elastic modulus (ii) proportional limit (iii) yield stress (iv)yield strain (v) fracture stress (vi) fracture strain on each graph. You may showboth graphs on one plot. Explain the difference between engineering stress and true stress.
- You have been asked to draw up a specification for a ceramic cladding tile that is likely to experience tensile stresses of 89 MPa during its installation and service lifetime. If the ceramic has a specific surface energy of 0.35 J/m2 and its Youngs Modulus is 85 GPa what would be the maximum length of an internal flaw that would not result in fracture of the tile? (This question has only one correct answer) a. 2.53 µm b. 5.06 µm c. 4.78 μm d. 2.53 mm e. 2.39 mm f. 4.78 mm g. 2.39 umFatigue accounts for ~90% of mechanical engineering failures. Please list 4 measures that may be taken to increase the resistance to fatigue of metallic materials. Please also briefly explain how each of these measures improves fatigue performance.You have been asked to draw up a specification for a ceramic cladding tile that is likely to experience tensile stresses of 64 MPa during its installation and service lifetime. If the ceramic has a specific surface energy of 0.28 J/m2 and its Youngs Modulus is 82 GPa what would be the maximum length of an internal flaw that would not result in fracture of the tile? (This question has only one correct answer) O a. 3.79 mm O b. 7.14 mm c. 7.57 um Ο d.3.79 μm O e. 3.57 µm O f. 3.57 mm g. 7.14 um
- In an engineering application, the material is a strip of iron with a fixed crystallographic structure subject to a tensile load during operation. The part failed (yielded) during operation and needs to be replaced with a component with better properties. You are told that two other iron strips had failed at yield stresses of 110 and 120 MPa, with grain sizes of 30 microns and 25 microns respectively. The current strip has a grain size of 20 microns. The diameter of the rod is 1 mm and the load applied is 100 N. What is the yield stress of the new part C and would you recommend it for operation? Select one: a. 140.5, no Ob. 129.5, yes OC. 120.5 MPa, no O d. 133.5 MPa, yes O e. 123.5 MPa, yesFigure 2 shows the stress versus strain curve of four engineering materials. Compare the ability of the materials to sustain stress without fracture and their ability to absorb the energy before fracture between Material A and D. C B D Strain Stress (MPa)In an engineering application, the material is a strip of iron with a fixed crystallographic structure subject to a tensile load during operation. The part failed (yielded) during operation and needs to be replaced with a component with better properties. You are told that two other iron strips had failed at yield stresses of 110 and 120 MPa, with grain sizes of 30 microns and 25 microns respectively. The current strip has a grain size of 20 microns. The diameter of the rod is 1 mm and the load applied is 100 N. What is the yield stress of the new part C and would you recommend it for operation? Select one: a.120.5 MPa, no b.140.5, no c.129.5, yes d.123.5 MPa, yes e.133.5 MPa, yes
- In an engineering application, the material is a strip of iron with a fixed crystallographic structure subject to a tensile load during operation. The part failed (yielded) during operation and needs to be replaced with a component with better properties. You are told that two other iron strips had failed at yield stresses of 110 and 120 MPa, with grain sizes of 30 microns and 25 microns respectively. The current strip has a grain size of 20 microns. The diameter of the rod is 1 mm and the load applied is 100 N. What is the yield stress of the new part C and would you recommend it for operation? Select one: a. O b. 129.5, yes C. 133.5 MPa, yes e. 120.5 MPa, no d. 140.5, no 123.5 MPa, yesIn an engineering application, the material is a strip of iron with a fixed crystallographic structure subject to a tensile load during operation. The part failed (yielded) during operation and needs to be replaced with a component with better properties. You are told that two other iron strips had failed at yield stresses of 110 and 120 MPa, with grain sizes of 30 microns and 25 microns respectively. The current strip has a grain size of 20 microns. The diameter of the rod is 1 mm and the load applied is 100 N. What is the yield stress of the new part C and would you recommend it for operation?Hello, the question I have attached is on the book "Advanced Mechanics of Materials and Applied Elasticity, 5th edition, Ansel Ugural". The question is in the first chapter, 79th question. I will be glad to be answered, thanks a lot!