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Rapid Prototyping (Elective) (October 2010)

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Total No. of Questions :10] [Total No. of Pages : 2 P1115 [3864] - 147 B.E.(Mechanical Engineering) RAPID PROTOTYPING (2003 Course) (402050) (Elective) Time : 3 Hours] [Max. Marks : 100 Instructions to the candidates: 1) Solve any three questions from each section. 2) Answers to the two sections should be written in separate answer books. 3) Figures to the right indicate full marks. 4) Neat diagram should be drawn wherever necessary. 5) Assume suitable data, if necessary. SECTION - I Q1) a) What is product definition? What type of activities should be included in product definition? [6] b) How RP technology has been revolutionizing the manufacturing industry. [4] c) What are the reasons for the failure of a new product? [6] Q2) a) How can bringing a product to market rapidly have an impact on the rate of return and how it affects the outcome of other competitive products? Elaborate with a example. [8] b) Why design is an iterative process and how does Rapid Prototyping aid this? [4] c) Why time-to-market is so critical? [4] Q3) a) Use an example to explain the limitation of the stereolithography process. [6] b) c) Why solid model is needed in RP and What are data inputs in RP. [5] Why Rapid Prototyping is also called as Generative Manufacturing. [5] P.T.O. Q4) a) What is an STL file? How it is sliced? Explain with sketch. [4] b) Compare the advantages and disadvantages of the stereo lithography [6] process and mask-based process. c) Compare FDM with SLA. [6] Q5) Write Short notes: a) LLM Technology and its applications. b) SGC. c) SLC file Format. SECTION - II [18] Q6) a) What are the merits and demerits of the solid, liquid and powder based RP processes. [6] b) Among solid-based (not powder) RP processes, which process can produce metal parts such as aluminum? How does it work? [6] c) What are the material choices in solid-based RP processes? Q7) a) [4] What are the differences between rapid tooling and conventional tooling? [6] b) What are the material choices in liquid-based RP processes? c) Explain with sketch Multi Component Metal Powder Laser Sintering process. [6] Q8) a) When making a prototype is necessary? [4] [4] b) Which method to select among solid, liquid and powder based RP processes for a particular application? Explain with suitable example?[8] c) Which are the operative aspects in RP? [4] Q9) a) Explain in detail Direct Rapid Tooling and Indirect Rapid Tooling. [8] b) What are the important factors influencing the cost of RP process? Elaborate with suitable example. [8] Q10)Write short notes: [18] a) Single Component Metal Powder LASER Sintering. b) Orthopedic applications of RP. c) 3D Printing. [3864]-147 jjj 2

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Additional Info : 2003 Course
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