1. In a few words or in a single short sentence explain why it is easier to deform a piece of aluminum thai a piece of iron? | II. In a typical engineering stress-strain diagram, stress keeps on increasing after yield point due to strain hardening. In a few words or in a single short sentence explain what causes strain hardening? III. In a few words or in a single short sentence explain what kind of relationships represent thermally activated processes?. IV. Stress-Strain behavior of a hypothetical material is given below. Using 0.2 % offset yield strength method, determine (approximate) its yield strength and subsequently its modulus of elasticity. Draw (digital, manual, or copy and paste) the figure on your answer sheet and show the detail of your work. V. Determine the critical resolved shear stress on a BCC single crystal if a normal stress of 10 MPa along [100] direction causes slip system on (110) plan along (1-11), one-bar one-one, direction. Figure for Part D: 400 300 250 150 50 0.002 0.004 0.006 0.008 0.01 Strain

1. In a few words or in a single short sentence explain why it is easier to deform a piece of aluminum thai a piece of iron? | II. In a typical engineering stress-strain diagram, stress keeps on increasing after yield point due to strain hardening. In a few words or in a single short sentence explain what causes strain hardening? III. In a few words or in a single short sentence explain what kind of relationships represent thermally activated processes?. IV. Stress-Strain behavior of a hypothetical material is given below. Using 0.2 % offset yield strength method, determine (approximate) its yield strength and subsequently its modulus of elasticity. Draw (digital, manual, or copy and paste) the figure on your answer sheet and show the detail of your work. V. Determine the critical resolved shear stress on a BCC single crystal if a normal stress of 10 MPa along [100] direction causes slip system on (110) plan along (1-11), one-bar one-one, direction. Figure for Part D: 400 300 250 150 50 0.002 0.004 0.006 0.008 0.01 Strain

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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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.
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1 - Describe the engineering stress-strain curve 2 - If the tensile specimen is not cylindrical rod shaped but a flat rectangular plate, how do you expect necking to occur in this type of specimen? 3 - Both yield strength and ultimate tensile strength exhibit the ability of a material to withstand a certain level of load. Which parameter do you prefer to use as a design parameter for a proper selection of materials for structural applications? Explain
If material A is observed to have twice the modulus of rigidity but the same Poisson's ratio and yield shear stress than that of material B, then which of the following comparisons is always true? Select one: Material A can resist higher normal stresses than material B can before permanent normal deformations occur. O b For the same load that brings the materials to plastic behavior, material A will experience larger permanent shear deformations than material B. Material A can resist higher shear stresses than material B before permanent shear deformations occur. O d. Material B is has a lower ultimate stress than material A.
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Tag question Consider the graph below for 3 metals which have been cold-worked. From the graphs, which of the following statements are true? Stress Select one or more: a. C. Strain & A e. B C b. B and C have similar hardness; C has greater brittleness B is softer than C and has nearly similar ductility A is harder than C and is more ductile d. A and B have similar hardness; A has greater brittleness A is harder than C and is less ductile f. B is harder than C but has nearly similar ductility 5 up i A C
34% @ P 6:06 * ASIACELL I. 1 1 فيفري P 1:48 تحریر The strength constant (C) is increased with increasing of نقطة واحد- .temperature True O False O نقطة واحد- The metal is becoming weaker as strain increases, this is because of strain hardening .(work hardening) property True O d
Consider the graph below for 3 metals which have been cold-worked. From the graphs, which of the following statements are true? Stress o Select one or more: □ c. Strain & A e. B a. B and C have similar hardness; C has greater brittleness b. B is softer than C and has nearly similar ductility A is harder than C and is more ductile C d. B is harder than C but has nearly similar ductility A is harder than C and is less ductile f. A and B have similar hardness; A has greater brittleness
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Discuss the concept of stresses? State the properties could be drawn from the stress strain diagrams
1. What are the elastic modulus (E) and the Poisson's ratio () used to indicate? 2. Illustrate the differences between actual stress and engineered stress with strain, and also describe their underlying physical concepts. 3. If the engineering strain is 2% for a specific state of uniaxial stress, what is the real strain? Please solve for all in full detail and step by step
Discussion 1 - Describe the engineering stress-strain curve 2 - If the tensile specimen is not cylindrical rod shaped but a flat rectangular plate, how do you expect necking to occur in this type of specimen? 3 - Both yield strength and ultimate tensile strength exhibit the ability of a material to withstand a certain level of load. Which parameter do you prefer to use as a design parameter for a proper selection of materials for structural applications? Explain