Homework Answers
ULTIMATE POINT ::
The point at upto which material can withstand maximum load and ultimate strength with maximum elongation.
Large deformation possible before failure.
AFTER ULTIMATE POINT next point in STRESS STRAIN CURVE is BREAKING POINT.
Before breaking the material undergoes necking.
BREAKING POINT ::
Breaking point also known as fracture point.
Breaking point is a point at which the material breaks. The stress associates with this point known as breaking strength or rupture strength.
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Which point on the stress strain curve occurs after the ultimate point? Select one: O a....
3. In a stress–strain curve from a tension test, the specimen begins to neck and the...
3. In a stress–strain curve from a tension test, the specimen begins to neck and the elongation between the gage marks is no longer uniform once the load is beyond . a) yield strength b) proportional limit c) ultimate tensile strength d) Fracture stress 4. The two parameters that can define ductility are _____ and _______. a) elongation b) engineering strain c) reduction of area c) poisson’s ratio
Stress-Strain Curve 39· Material Type (l ot J) 40 Modulus of Elasticity 41. Stress Axis 42....
Stress-Strain Curve 39· Material Type (l ot J) 40 Modulus of Elasticity 41. Stress Axis 42. Strain Axis G K l-ductile J-brittle 43.Yield Point 4Fracture Point 45. Ultimate Strength Bonus 2: If the force is removed when the material is at point F, what will happen to the material?
1. Stress-Strain Diagrams (10 points) Draw and label a Stress-Strain diagram for two materials with the...
1. Stress-Strain Diagrams (10 points) Draw and label a Stress-Strain diagram for two materials with the following properties. (B) is brittle and has a Young's Modulus that is twice as large as (A). The elastic limit, yield point and rupture occur almost simultaneously for (B). (A) is a ductile material that undergoes plastic deformation prior to rupture. The toughness of (A) is approximately 4x as large as (B). You do not need to label any points on the curves other...
Figure 2.1 shows the stress strain curves for three materials. For these materials answer the fol...
Figure 2.1 shows the stress strain curves for three materials. For these materials answer the following questions, giving reasons for your selection a) Which material has the highest elastic modulus? b) Which material has the highest ductility? c) Which material has the highest toughness? d) Which material has the highest yield strength? e) Which material has the highest ultimate tensile strength? f State respectively which material behaves like a: i. Metal ii. Polymer iii. Ceramic Figure 2.1 (NB. The points...
manifactoring processes 1) Sketch Engineering stress vs. Engineering strain curve and True stress vs. true strain...
manifactoring processes 1) Sketch Engineering stress vs. Engineering strain curve and True stress vs. true strain curve from one uniaxial tension test for an engineering metals that shows power law strain hardening (e.g. aluminum or steel), within the same plot, and identify, from the curves, the material property parameters of: Yield strength (0.2% offset) Uniform engineering strain ultimate tensile strength (eng.) true stress and true strain at the onset of necking K and n from power-law fitting (the range of...
Page 5 ofs Question2 (10 pts.) The stress-strain curve for a nonlinear, perfectly elastic material is...
Page 5 ofs Question2 (10 pts.) The stress-strain curve for a nonlinear, perfectly elastic material is shown below. A sample of the material is loaded until the stress reaches the value at Point B, after which the sample is unloaded to zero stress. What is the approximate permanent deformation in material? (MPa) 125 100 75ト 50 25 A 5 10 15 20 25 30 35 40 (x 10-4) (A) 0 (B) 0.001 (C) 0.002 (D) 0.003 Support your answers with...
2) Draw two schematic graphs using pencil showing a typical stress-strain curve for aluminum. The first...
2) 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 show both graphs on one plot. (5 points)
F3–2. Indicate the points on the stress-strain diagram which represent the proportional limit and the ultimate...
F3–2. Indicate the points on the stress-strain diagram which represent the proportional limit and the ultimate stress. В С F3–2
Problem 5. (13 pts.) The stress - strain curve shown below was developed after tensile testing...
Problem 5. (13 pts.) The stress - strain curve shown below was developed after tensile testing of a sample of an unknown material. (stress) - (strain) a) In view of what state of material behavior each point/line represents, fill the table below. Point/Line Material Behavior R b) Write a parametric equation that can approximately calculate the modulus of resilience based on the parameters shown on the graph: c) Write a parametric equation that can approximately calculate the modulus of toughness...
Please give a full, detailed, worded explanation. Thank you :))) S. Draw a possible stress strain...
Please give a full, detailed, worded explanation. Thank you :)))
S. Draw a possible stress strain graph for a material with a yield stress of 300 MPa, an elastic modulus of 200 GPa, a UTS of 450 MPa and a ductility of 20%. Calculate the elastic strain at the point where the material starts to plastically deform. 6. A nylon rope with an elastic modulus of 3 GPa is placed under a force of 17.5 kN. The cross-sectional area of...
Stress-Strain Curve 39· Material Type (l ot J) 40 Modulus of Elasticity 41. Stress Axis 42. Strain Axis G K l-ductile J-brittle 43.Yield Point 4Fracture Point 45. Ultimate Strength Bonus 2: If the force is removed when the material is at point F, what will happen to the material?
1. Stress-Strain Diagrams (10 points) Draw and label a Stress-Strain diagram for two materials with the following properties. (B) is brittle and has a Young's Modulus that is twice as large as (A). The elastic limit, yield point and rupture occur almost simultaneously for (B). (A) is a ductile material that undergoes plastic deformation prior to rupture. The toughness of (A) is approximately 4x as large as (B). You do not need to label any points on the curves other...
Figure 2.1 shows the stress strain curves for three materials. For these materials answer the following questions, giving reasons for your selection a) Which material has the highest elastic modulus? b) Which material has the highest ductility? c) Which material has the highest toughness? d) Which material has the highest yield strength? e) Which material has the highest ultimate tensile strength? f State respectively which material behaves like a: i. Metal ii. Polymer iii. Ceramic Figure 2.1 (NB. The points...
Page 5 ofs Question2 (10 pts.) The stress-strain curve for a nonlinear, perfectly elastic material is shown below. A sample of the material is loaded until the stress reaches the value at Point B, after which the sample is unloaded to zero stress. What is the approximate permanent deformation in material? (MPa) 125 100 75ト 50 25 A 5 10 15 20 25 30 35 40 (x 10-4) (A) 0 (B) 0.001 (C) 0.002 (D) 0.003 Support your answers with...
2) 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 show both graphs on one plot. (5 points)
F3–2. Indicate the points on the stress-strain diagram which represent the proportional limit and the ultimate stress. В С F3–2
Problem 5. (13 pts.) The stress - strain curve shown below was developed after tensile testing of a sample of an unknown material. (stress) - (strain) a) In view of what state of material behavior each point/line represents, fill the table below. Point/Line Material Behavior R b) Write a parametric equation that can approximately calculate the modulus of resilience based on the parameters shown on the graph: c) Write a parametric equation that can approximately calculate the modulus of toughness...
Please give a full, detailed, worded explanation. Thank you :)))
S. Draw a possible stress strain graph for a material with a yield stress of 300 MPa, an elastic modulus of 200 GPa, a UTS of 450 MPa and a ductility of 20%. Calculate the elastic strain at the point where the material starts to plastically deform. 6. A nylon rope with an elastic modulus of 3 GPa is placed under a force of 17.5 kN. The cross-sectional area of...
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