How does glass transition temperature relate to manufacturing process/ temperature? How does this manufacture then differ between crystalline vs. amorpohous structure? How does linear vs. nonlinear polymer effect the glass transition temperature?

How does polymeric glass formation prevent flow of linear polymer? Explain Tg and chemical reasons. How does this prevention of flow effect mechanical charcteristics?

When looking at the glass transition temperature, what happens when above and below it? How does this change between thermoplastic vs. thermosetting? Amorphous vs. Crystalline? Linear vs. nonlinear? When does glass formation happen vs. crystallization?

When looking at the melting temperature, what happens when above and below it? How does this change between thermoplastic vs. thermosetting? Amorphous vs. Crystalline? Linear vs. nonlinear? When does solidification happen vs. crystallization?

Why do amorphous solids have high strength and low ductility?

1. Define the four types of chips observed in machining. Explain how different chips are obtained from materials of different ductility. 2. According to the Merchant Equation, an increase in rake angle would have which of the following results, if all remaining factors are constant (more than one correct answer): a. Decrease in friction angle b. Decrease in power requirements c. Decrease in shear plane angle d. Increase in cutting temperature e. Increase in shear plane angle 3. State and describe the orthogonal cutting model. Define chip ratio and explain why chip ratio is always < 1.0. 4. Explain the effect of cutting temperature in machining on the chip formation and finish of the machined parts. 5. Describe and state the difference between roughing and finishing in machining operations. 6. Define (a) cutting power, (b) Gross Power, and (c) Specific Power along with pertinent equations. 7. State and briefly describe the 3 stages of Tool Wear Rate using a plot. 8. Turning tests have resulted in a 1 minute tool life for cutting speed v = 4 m/s and a 20 minute tool life at a speed v = 2 m/s. a. Determine the values of n and C in the Taylor tool life equation ( , T = tool life [min], v = cutting speed [m/min]) b. Project how long the tool would last at a speed of v = 1 m/s 9. What are the 3 time components of the total production cycle for a part? What is the equation for the cycle time (Tc)? 10. Whatarethe4mainingredientsofacuttingfluid?Whatarethe3mainmethodsbywhichcutting fluids are introduced in a machining operation? 11. Whatarethe4maincosts(withequations)involvedwithproductionofapart?Howiscycletime related to the unit cost of production?

1. What is the difference between traditional ceramics and the new ceramics, as far as raw materials are concerned? 2. List the basic steps in the traditional ceramics sequence. 3. What is the technical difference between crushing and grinding in the preparation of traditional ceramic raw materials? 4. Describe the slip casting process in traditional ceramics processing. 5. List and briefly describe some of the plastic-forming methods used to shape traditional ceramics products. 6. What is the process of jiggering? 7. What is the difference between dry pressing and semi dry pressing of traditional ceramics parts? 8. What happens to a ceramic material when it is sintered? 9. What is the name given to the furnace used to fire ceramic ware? 10. What is glazing in traditional ceramic processing? 11. Why is the drying step important for processing of traditional ceramics, usually not required in processing of new ceramics? 12. Why is raw material preparation more important in the processing of new ceramics than for traditional ceramics? 13. What is the freeze drying process used to make certain new ceramic powders? 14. Describe the doctor-blade process. 15. Liquid phase sintering is used for WC-Co compacts, even though the sintering temperatures are below the melting points of either WC or Co. How is this possible? 16. What are some design recommendations for ceramic parts?

12. What is forging? 13. One way to classify forging operations is by the degree to which the work is constrained in the die. By this classification, name the three basic types. 14. Why is flash desirable in impression die forging? 15. What is a trimming operation in the context of impression die forging? 16. What are the two basic types of forging equipment? 17. What is isothermal forging? 18. What is extrusion? 19. Distinguish between direct and indirect extrusion. 20. Name some products that are produced by extrusion 21. Why is friction a factor in determining the ram force direct extrusion but not a factor in indirect extrusion 22. What does the centerburst defect in extrusion have in common with the roll piercing process? 23. What is wire drawing and bar drawing? 24. Although the workpiece in a wire drawing operation is obviously subjected to tensile stresses, how do compressive stresses also play a role in the process? 25. In a wire drawing operation, why must the draw stress never exceed the yield strength of the metal?

1. What are the reasons why the bulk deformation processes are important commercially and technologically? 2. Name the four basic bulk deformation processes. 3. What is rolling in the context of the bulk deformation processes? 4. In rolling of steel, what are the differences between a bloom, a slab, and a billet? 5. List some of the products produced on a rolling mill. 6. What is draft in a rolling operation? 7. What is sticking in a hot rolling operation? 8. Identify some of the ways in which force in flat rolling can be reduced. 9. What is a two-high rolling mill? 10. What is a reversing mill in rolling? 11. Besides flat rolling and shape rolling, identify some additional bulk forming processes that use rolls to effect the deformation.

1. Identify the three basic types of sheet metalworking operations. 2. In blanking of a round sheet metal part, indicate how the clearance should be applied to the punch and die diameters. 3. What is the difference between a cutoff operation and a parting operation? 4. Describe V-bending and edge bending. 5. What is springback in sheet metal bending? 6. What are some of the simple measures used to assess the feasibility of a proposed cup drawing operation? 7. Distinguish between redrawing and reverse drawing. 8. What are some of the possible defects in drawn sheetmetal parts? 9. What is stretch forming? 10. Identify the principal components of a stamping die that performs blanking. 11. What are the two basic categories of structural frames used in stamping presses?

12. What are the relative advantages and disadvantages of mechanical versus hydraulic presses in sheet metalworking?

13. What is the Guerin process?

14. Identify a major technical problem in tube bending.

15. Distinguish between roll bending and roll forming.

1. What are the differences between bulk deformation processes and sheet metal processes? 2. Extrusion is a fundamental shaping process. Describe it. 3. Why is the term press working often used for sheet metal processes? 4. What is the difference between deep drawing and bar drawing? 5. Indicate the mathematical equation for the flow curve. 6. How does increasing temperature affect the parameters in the flow curve equation? 7. Indicate some of the advantages of cold working relative to warm and hot working. 8. What is isothermal forming? 9. Describe the effect of strain rate in metal forming. 10. Why is friction generally undesirable in metal forming operations? 11. What is sticking friction in metalworking?

13. Describe the process steps in sand casting? Compare to die casting, what are some major advantages and disadvantages of sand casting? 14. A large steel sand casting shows the characteristic signs of penetration defect – a surface consisting of a mixture of sand and metal. (a) What steps can be taken to correct the defects? (b) What other possible defects might result from taking each of these steps? 15. Using an explicit sketch to illustrate and describe the process steps in investment casting. What are the advantages and disadvantages of investment casting over sand casting? 16. What are some the operations required in sand casting after the casting is removed from the mould?

17. What are the most common metals used in die casting?

18. Which die-casting machines usually have a higher production rate, hot-chamber or cold-chamber?

19. What is the difference between true centrifugal casting and semicentrifugal casting?  

air is compressed in an adiabatic and isentropic compressor from 14 psia and 60F to 210 psia. Determine the outlet temperature [F] and the work consumed by this compressor per unit mas of air [Btu/lbm]. Assume constant specific heats at T=100F

Please explain table look ups, thank you!

7. Identify the three sources of contraction in a metal casting after pouring. 8. What is directional solidification and what is chill in casting? 9. Total solidification time is defined as (select one): (a) time between pouring and complete solidification, (b) time between pouring and cooling to room temperature, (c) time between solidification and cooling to room temperature, (d) time to give up the heat of fusion? 10. What is the difference between a pattern and a core in making sand casting mould? 11. What is function of riser? 12. What properties determine the quality of a sand mould for sand casting?

1. Identify some of the important advantages of metal casting processes, and also some of the disadvantages and limitations. 2. What is the difference between an open mould and a closed mould? 3. Name the two basic mould types that distinguish casting processes. 4. Why should turbulent flow of molten metal into the mould be avoided? 5. What are some of the factors that affect the fluidity of a molten metal during pouring into a mould cavity? 6. How does solidification of alloys differ from solidification of pure metals?