Because of it's tensile strength, steel is considered a ________ material. a) Brittle b) Ductile c)...
Because of it's tensile strength, steel is considered a ________ material.
a) Brittle
b) Ductile
c) Flexible
Homework Answers
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Because of it's tensile strength, steel is considered a ________
material.
a) Brittle
b) Ductile
c)...
5. a) Explain the differences in the tensile behaviour of steel, aluminium and mild steel. b) Dra...
5. a) Explain the differences in the tensile behaviour of steel, aluminium and mild steel. b) Draw a stress strain curve for a ductile material on your answer book and mark on the curve Elastic region . Plastic region 0.1% proof strength . Tensile strength .Plastic strain to fracture Elastic energy and plastic energy Young's Modulus
5. a) Explain the differences in the tensile behaviour of steel, aluminium and mild steel. b) Draw a stress strain curve for a ductile...
6. (a) Name a conductor, an insulator, a semiconductor, a ductile material and a brittle material....
6. (a) Name a conductor, an insulator, a semiconductor, a ductile material and a brittle material. (b) What are the units of electrical conductivity and ductility? (c) What is the difference between 24 carat gold and 18 carat gold in gold purity? (d) What is the benefit of alloying gold with copper in gold rings? I
8. Ductile to brittle transition: observed and a material when temperature is low.
8. Ductile to brittle transition: observed and a material when temperature is low.
Figure Q1 shows the results of a tensile test undertaken on a brittle material The specimen...
Figure Q1 shows the results of a tensile test undertaken on a brittle material The specimen fractured at the indicated load of 20 kN having undergone an extension of 14 mm. Cakculate the energy involved in the fracture process (1 mark) State what kind of deformation the specimen is undergoing during the test. (0.5marks) Very briefly speculate on how the energy of fracture of a ductile (tough) material would compare with that obtained from Figure Q (0.5marks) し20 0 (KN)...
(A) Describe how fatigue damage happens in a ductile material. Draw sketches if needed. (B) If we maintain a constant stress σ-0.9G (GIs the yield strength) on a steel, will fatigue damage happen? Wh...
(A) Describe how fatigue damage happens in a ductile material. Draw sketches if needed. (B) If we maintain a constant stress σ-0.9G (GIs the yield strength) on a steel, will fatigue damage happen? Why?
(A) Describe how fatigue damage happens in a ductile material. Draw sketches if needed. (B) If we maintain a constant stress σ-0.9G (GIs the yield strength) on a steel, will fatigue damage happen? Why?
The purpose of the tensile test is _______. 1. To collect and understand the %...
The purpose of the tensile test is _______. 1. To collect and understand the % reduction in area 2. To classify if a material is ductile or brittle 3. To determine and measure how flexible a material is 4. To collect and understand the % elongation data (Select one or more)
answer question 2 please A material may fail in many ways; in a ductile or brittle...
answer question 2 please
A material may fail in many ways; in a ductile or brittle mode; by creep or fatigue; by corrosion or stress corrosion; by hydrogen or liquid metal embrittlement; by slow tensile overload or by impact. An examination of the failure may tell you a lot about the material and the failure mode. In this course, you have learned (we trust) the correlations between structure-properties, - applications. This leads to material selection. However, the engineer has to...
Q3. (a) Define "Brittle Define "Brittle Materials and Ductile Materials in terms of Ductinty. (12 marks)...
Q3. (a) Define "Brittle Define "Brittle Materials and Ductile Materials in terms of Ductinty. (12 marks) (b) A solid metal bar of 30 mm tensile load of 120 kN. Find the stress, strain an Assume the Young's Modulus of the metal is 200 kN/mmº. Dar of 30 mm in diameter and 8 m in length is subjected to a ad of 120 kN. Find the stress strain and elongation in the matena. (9 marks) (c) A metal bar is subjected...
For the plane stress element below, assume that the material is: a) ductile plastic with yield...
For the plane stress element below, assume that the material is: a) ductile plastic with yield strength of 135 MPa. b) brittle plastic with ultimate strength of 50 MPa in tension and 300 MPa in compression. Determine if material a) or b) fails 90 MPa 60 MPa Х - 20 MPa
1. What will happen to a ductile material when tensile stress on it is increased beyond...
1. What will happen to a ductile material when tensile stress on it is increased beyond its yield strength? 2. Consider a 1 m long massless rod with a 500 g metal ball attached to one of its ends. What is its moment of inertia about the other end, assuming the metal ball to be a point mass?
5. a) Explain the differences in the tensile behaviour of steel, aluminium and mild steel. b) Draw a stress strain curve for a ductile material on your answer book and mark on the curve Elastic region . Plastic region 0.1% proof strength . Tensile strength .Plastic strain to fracture Elastic energy and plastic energy Young's Modulus
5. a) Explain the differences in the tensile behaviour of steel, aluminium and mild steel. b) Draw a stress strain curve for a ductile...
6. (a) Name a conductor, an insulator, a semiconductor, a ductile material and a brittle material. (b) What are the units of electrical conductivity and ductility? (c) What is the difference between 24 carat gold and 18 carat gold in gold purity? (d) What is the benefit of alloying gold with copper in gold rings? I
8. Ductile to brittle transition: observed and a material when temperature is low.
Figure Q1 shows the results of a tensile test undertaken on a brittle material The specimen fractured at the indicated load of 20 kN having undergone an extension of 14 mm. Cakculate the energy involved in the fracture process (1 mark) State what kind of deformation the specimen is undergoing during the test. (0.5marks) Very briefly speculate on how the energy of fracture of a ductile (tough) material would compare with that obtained from Figure Q (0.5marks) し20 0 (KN)...
(A) Describe how fatigue damage happens in a ductile material. Draw sketches if needed. (B) If we maintain a constant stress σ-0.9G (GIs the yield strength) on a steel, will fatigue damage happen? Why?
(A) Describe how fatigue damage happens in a ductile material. Draw sketches if needed. (B) If we maintain a constant stress σ-0.9G (GIs the yield strength) on a steel, will fatigue damage happen? Why?
answer question 2 please
A material may fail in many ways; in a ductile or brittle mode; by creep or fatigue; by corrosion or stress corrosion; by hydrogen or liquid metal embrittlement; by slow tensile overload or by impact. An examination of the failure may tell you a lot about the material and the failure mode. In this course, you have learned (we trust) the correlations between structure-properties, - applications. This leads to material selection. However, the engineer has to...
Q3. (a) Define "Brittle Define "Brittle Materials and Ductile Materials in terms of Ductinty. (12 marks) (b) A solid metal bar of 30 mm tensile load of 120 kN. Find the stress, strain an Assume the Young's Modulus of the metal is 200 kN/mmº. Dar of 30 mm in diameter and 8 m in length is subjected to a ad of 120 kN. Find the stress strain and elongation in the matena. (9 marks) (c) A metal bar is subjected...
For the plane stress element below, assume that the material is: a) ductile plastic with yield strength of 135 MPa. b) brittle plastic with ultimate strength of 50 MPa in tension and 300 MPa in compression. Determine if material a) or b) fails 90 MPa 60 MPa Х - 20 MPa
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