CM7202-Applied Materials Engineering

8/17/2019 CM7202-Applied Materials Engineering

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VALLIAMMAI ENGINEERING COLLEGE

DEPARTMENT OF MECHANICAL ENGINEERING

Sem&Branch: II/MECAD/CAMSubject Code: CM7202 Subject Name: Applied Materials Engineering

PART-A

UNIT1-ELASTICAND PLASTIC BEHAVIOUR

1. Define True strain and engineering strain. (BT- 1)2. Distinguish between Slip in BCC and FCC. (BT- 2)3. Describe the Stress strain behaviour of ideal elastic and ideal plastic. (BT- 2)

4. Classify the crystal defects based on their dimensions. (BT- 3)

5. Classify the materials based on stress-strain behavior. (BT- 3)6. Define Stress concentration Factor and stress intensity factor. (BT- 1)

7. Discuss about Sudden strain and transient strain in creep. (BT- 2)

8. Explain grain refinement. (BT- 5)

9. Formulate approximate Endurance of the proof stress. (BT- 6)10. Distinguish between Fibre and particulate. (BT- 2)

11. Define Grain boundary. (BT- 1)

12. Define Solutionising and austenitising. (BT- 1)13. Define Dislocation density. (BT- 1)

14. Define ductile brittle transition temperature. (BT- 1)

15. Explain the need of strain hardening. (BT- 4)16. Explain the roll of temperature on steel. (BT- 4)

17. Explain inter atomic distance. (BT- 4)

18. Combine the interatomic distance relates the deformation of a material. (BT- 6)

19. Classify the composites based on matrix. (BT- 3)20. Explain the principle of strengthening mechanisms. (BT- 5)

PART-B

1. Formulate an expression for theoretical shear strength of a crystal and state whyit isfar lessthan the real shear strength? (BT- 6)

2. Describe the fundamental principle of strengthening a metallic crystal? List the variousstrengthening mechanisms.(BT- 1)

3. Discuss in detail the principle,potential,application and solid solutioning. (BT- 2)4. Classify the materials based on stress-strain behaviour. With suitable stress-strain diagramsand examples describe the various types in detail. (BT- 3)

5. Classify the crystal defects based on their dimensions. With suitable illustrations describe their

features and significance. (BT- 3)6. Describe the list of the composites based on matrix – second phase relationship and give

suitable examples for each category. (BT- 2)

7. How is grain refinement achieved in cast iron and steel? Explain. (BT- 4)


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8. The strength of resin and glass fibre are 120 and 800MPa, a composite of strength of 180Mpais needed, calculate the amount of fibre to be added. (BT- 5)

9. Describe the mechanism of precipitation strengthening? State the conditions an alloy should

satisfy to undergo precipitation strengthening. With suitable example explain the precipitationstrengthening in detail. (BT- 1)

10. Using a suitable diagram of composition vs. strength, describe the role of phase mixture andmartensitic transformation on the strength of carbon steel. (BT- 1)

PART-C

1. What do you understand by hall-petch equation.Summarize the mechanism of strengthening

using hall-petch equation (BT - 5)

2. Explain in detail the effectof temperature on plastic deformation (BT - 4)

3. What do you mean by strain rate sensitivity?Conclude the temperature dependence and effectof plastic flow (BT - 5)

3. Explain the role of dislocation theory and its effect on plastic deformation (BT - 4)

4. Summarizethe principles and applications of grain boundary strengthening (BT - 5)

PART A

UNIT2-FRACTURE BEHAVIOUR

1. Distinguish between Rupture and cup-cone failure. (BT- 2)2. Define ductile brittle transition temperature. (BT- 1)3. Explain the need of strain hardening. (BT- 4)

4. Explain the roll of temperature on steel. (BT- 5)

5. Differentiate between Grain and crystal. (BT- 2)6. How the interatomic distance relates the deformation of a material? Explain. (BT- 4)

7. Differentiate between Grain and crystal. (BT- 2)8. Explain the principle of strengthening mechanisms. (BT- 5)9. Explain the limitations of cold working. (BT- 4)

10. Classify any two various types of failure cycles. (BT- 3)

11. Differentiate between Grain and crystal. (BT- 2)

12. Classify the stages of fatigue. (BT- 3)13. Define crack growth ratio. (BT- 1)

14. Define Griffith’s theory. (BT- 1)

15. List out the factors affecting fatigue. (BT- 1)16. Define paris law in fatigue. (BT- 1)

17. List the types of fatigue cycles. (BT- 1)

18. Formulate an expression for fracture stress. (BT- 6)19. Classify the non-metallic materials. (BT- 3)

20. Develop one example for cold working. (BT- 6)

PART-B

1. DefineGriffith’s theory of brittle fracture and drive an expression for fracture stress. (BT- 1)

2. Develop a new parameter for quantifying the resistance to fracture. (BT- 6)


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3. Classify the various types of failure cycleswith suitable figures and explain. (BT- 3)4. Describe the rotating beam fatigue test and how it’s conducted and state the use of test. (BT-

2)

5. Describe the fatigue growth study on a compact tensile specimen conducted and the results plotted? What is Paris equation? State its use. (BT- 1)

6. List the factors affecting fatigue? Describe their role on fatigue. (BT- 1)7. Explain the Residual life estimation on various steel. (BT- 4)8. Explain the low cycle fatigue test and its outcome. (BT- 4)

9. Explain the Larson miller parameter in deformation and fracture mechanism maps. (BT- 5)

10. Discuss about fracture of non-metallic materials. (BT- 2)

PART-C

1. Explain the concepts of stress intensity factor and fracture toughness with an example (BT - 5)2. Summarize various metallurgical factors that affect DBTT in stress (BT - 5)

3. Analyse the effect of surface and metallurgical parameters on fatigue fracture of nonmetallic

Materials (BT - 4)4.Summarize failure analysis (BT - 5)

PART-A

UNIT3-SELECTIONOF MATERIALS

1. Substitute any one suitable material for automobile engine valves and Justify. (BT- 6)2. Define steady state creep rate. (BT- 1)

3. Distinguish between Proof stress and ultimate tensile strength. (BT- 2)

4. Define residual stress. (BT- 1)5. Define resilience. (BT- 1)

6. Explain toughness of a material. (BT- 4)

7. Explain creep strength. (BT- 4)8. Define flexural strength. (BT- 1)

9. Explain fatigue strength. (BT- 4)

10. Classify the various types of Strength. (BT- 3)

11. Explain the reasons for seeking to employ materials of increased strength. (BT- 5)12. Define endurance limit. (BT- 1)

13. Distinguish between flexural strength and fatigue strength. (BT- 2)

14. Substitute any one suitable material for brake and justify. (BT- 6)15. Discuss various tests used for finding corrosion of material. (BT- 2)

16. Classify the parameters affecting sliding wear of a material. (BT- 3)

17. Define wear rate. (BT- 1)18. Illustrate factors motivating in selection of materials. (BT- 3)

19. Explain relation between creep and temperature. (BT- 5)

20. Discuss about non-metallic material. (BT- 2)


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PART-B

1. Discuss about creep failure of steel. (BT- 2)

2. Describe the fracture of non-metallic materials.(BT- 1)

3. Discuss the suitable strengthening mechanisms in toughening of metals. (BT- 2)4. Discuss the toughening mechanisms for metallic materials.(BT- 1)5. Explain the situations necessitate in selection of materials.(BT- 4)

6. Explain the cost basis in selection of materials.(BT- 4)

7. List the selection of materials, done by based on mechanical properties and Explain.(BT- 1)8. i)Explain the assessment of strength in metallic materials ii)Explain the strength basis in

selecting materials.(BT- 5)

9. Illustrate the issues to be considered while selecting materials for low, medium, hightemperature applications. Suggest suitable material for pipe lines at subzero temperature, steam

turbine and jet engine turbine shaft.(BT- 3)

10. Substitute suitable material for the following applications and justify Cylinder block for

passenger car, landing gear of aircraft, Fuselage of an aircraft second stage compressor blade of jet engine. (BT- 6)

PART-C

1. a Compare making part out of stainless steel and nickel plated carbon steel to the cost (BT-

5)1. bExplain the method to determine the cost of ceramic plastic (BT - 4)

2. Design a low cost child toy and name the material (BT - 6)

3.Explain the procedure for selecting materials based on cost, mechanical properties and servicerequirements for a given application (BT - 4)

4. With a case study, briefly explain the selection of materials for nuclear applications. (BT - 6)

PART-A

UNIT4-MATERIAL PROCESSING

1. Classify the processes in material processing. (BT- 3)2. Generalize the term “Nano composites”. (BT- 6)3. Explain the issues to be considered while processing composites. (BT- 5)

4. Explain the criteria for castability. (BT- 5)

5. Explain malleability and castability. (BT- 4)6. Generalize the term “Polymer nano composites”. (BT- 6)

7. Differentiate between thermo plastics and thermosetting plastics. (BT- 2)

8. How the composites are classified. (BT- 3)

9. Explain the characteristics a ceramic material. (BT- 4)10. Explain about smart materials. (BT- 4)


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11. List the casting defects. (BT- 1)12. Name the welding defects. (BT- 1)

13. Write the forging defects. (BT- 1)

14. State the advantages and limitations of composite materials.(BT- 1)15. Quote the special properties of nano materials. (BT- 1)

16. Define process induced defects.(BT- 1)17. How the ceramics are classified based on their applications. (BT- 3)18. Give the criteria for malleability. (BT- 2)

19. Express the criteria for weldability. (BT- 2)

20. Give the criteria for forgeability. (BT- 2)

PART-B

1. List the properties and applications of any four thermosetting plastics. (BT- 1)2. Write the properties and applications of any four thermo plastics. (BT- 1)

3. Define HSLA steels and describe their features. (BT- 1)

4. Explain in detail about Ultra high strength steels. (BT- 4)5. Discuss the Characteristics and applications of any four ceramic materials.(BT- 2)

6. Illustrate the constituents of a composite. Write note on Fiber reinforced plastics. (BT- 3)

7. Explain the Characteristics and applications of smart materials.(BT- 4)8. Explain in detail about Nano particles and Polymer Nano composites. (BT- 5)

9. Substitute suitable material for the following applications and justify your selection Hull of

ship, drinking water pipe line, food industry vessels and consumer durable casings.(BT- 6)10. What are the specialties of Stainless steel, tool steel and high speed steel? Describe their

composition, properties and applications.(BT- 2)

PART-C

1. Summarize properties, processing and applications of the following a. Nano crystallinematerials b. maraging steel (BT - 5)

2. Explain the concepts of processing engineering materials (BT - 4)

3. Explain the principles of astability, weldability and forgeability with examples (BT - 4)4. Suggest suitable material for the following applications and justify your selection hull of ship,

drinking water pipe line, food industry vessels and consumer durable casings.(BT - 5)

PART-A

UNIT5-MODERN MATERIALS AND TREATMENT

1. Differentiate between HSLA steels and maraging steels. (BT- 2)2. Describe maraging steels. (BT- 2)

3. Explain the reason for manufacturing the modern materials.(BT- 4)

4. Define plastics. (BT- 1)5. Explain thermosetting plastics. (BT- 4)

6. Recommend the applications ofthermoplastics. (BT- 5)


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7. Differentiate between thermo plastics and thermosetting plastics. (BT- 2)8. How the composites are classified. (BT- 3)

9. Illustrate the characteristics a ceramic material. (BT- 3)

10. Explain about smart materials. (BT- 5)11. Define composites. (BT- 1)

12. List the applications of composites. (BT- 1)13. Illustrate the role of matrix material in composite. (BT- 3)14. List the advantages and limitations of composite materials.(BT- 1)

15. Explain the special properties of nano materials. (BT- 4)

16. Generalize the term “CVD and PVD”. (BT- 6)17. When the coating process CVD is preferred. (BT- 1)

18. When the coating process PVD is preferred. (BT- 1)

19. Generalize the term “plasticity steel”.(BT- 6)

20. Give the properties of plastics.(BT- 2)

PART-B

1. Explain in detail about CVD and PVD in modern materials coating. (BT- 5)

2. List the criteria of castability. (BT- 1)

3. Give the various elements on weldability and explain the various defects of welding. (BT- 1)4. Illustrate the various defects of casting.(BT- 3)

5. List the criteria of forgeability. (BT- 1)

6. Illustrate the various defects of forging. (BT- 3)7. Discuss about functionality gradient materials. (BT -2)

8. Discuss about Nano materials and Smart materials. (BT -2)

9. Design any one mechanical component by casting and explain their defeats. (BT -6)

10. Explain advanced structural ceramics such as WC, TiC, TaC, Al2O3, SiC, CBN,

Diamond.(BT- 4)

PART-C

1. Why carbon reinforced polymer composites found wider applications in air craft than

Automobiles (BT - 5)2. Explain the concepts for processing engineering plastics and composite materials(BT - 4)

3. Summarize the principles of advanced structural ceramics with examples (BT - 5)

4. aExplain the method of developing Nano structured materials by any one deposition

technique. b. Summarize specific advantages of this hybrid materials in industrial applications? (BT - 5)

Documents

CM7202-Applied Materials Engineering