GUJARAT TECHNOLOGICAL UNIVERSITY
SEMESTER-VIII(NEW) EXAMINATION - SUMMER 2019
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Subject Code: 2181914 Date: 09/05/2019
Subject Name: Rapid Prototyping
Time: 10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
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Q.1 (a) Discuss the applications of RP systems. 03
(b) What are the important challenges for selection of material in RP 04
(c) Write the difference between rapid prototyping and computer numerical control. 07
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Q.2 (a) Discuss the different scan patterns use in stereolithography (SL). 03
(b) What are the merits and demerits of laminated Object manufacturing? 04
(c) With a neat sketch explain Selective Laser Sintering. 07
OR
(c) Write the applications of powder bed fusion processes. 07
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Q.3 (a) What are the advantages and limitations of solid based system compared with liquid based system? 03
(b) Which Rapid Prototyping processes are best suited for production of ceramic parts, Why? 04
(c) Describe Fused deposition modeling process with a neat diagram. 07
OR
Q.3 (a) Discuss the technical challenges of 3D printing. 03
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(b) Describe 3D printing process. 04
(c) Explain SGC process with neat sketch. 07
Q.4 (a) Explain Rapid tooling. 03
(b) Briefly explain the materials used in SLA. 04
(c) Explain in detail the process chain of Rapid Prototyping. 07
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OR
Q.4 (a) What is the difference between rapid tooling and rapid manufacturing? 03
(b) Explain silicon rubber tooling. 04
(c) Explain procedure of slicing and tool path generation with flowchart. 07
Q.5 (a) Compare STL and SLC file format. 03
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(b) Explain rapid tooling process. 04
(c) Explain the concept of support structure and material in RP process with neat sketch. 07
OR
Q.5 (a) Compare RP and CNC. 03
(b) Differentiate between direct and indirect Rapid tooling. 04
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(c) Discuss errors in RP processes. 07
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