INSTITUTE OF AERONAUTICAL ENGINEERING

(Autonomous)
Dundigal, Hyderabad -500 043

MECHANICAL ENGINEERING

TUTORIAL QUESTION BANK

Course Name : 3D Printing Technology

Course Code : AME804
Class : VI Semester
Branch : MECHANICAL ENGINEERING
Year : 2018–2019
Course Coordinator : Mr. M. Sunil Kumar, Assistant Professor.
Course Faculty : Mr. M. Sunil Kumar Assistant Professor.

Objectives:
I Understand the manufacturing and production concepts
II Analyze and understand about the automation system.
III Able to use the automation systems in manufacturing line.
IV Use different types of 3D printing materials, along with multi nozzle systems to control process
parameters

Blooms Course
S No QUESTION Taxonomy Learning
Level Outcomes
UNIT – I
INTRODUCTION TO PROTOTYPING

Part - A (Short Answer Questions)

1 What are the key aspects of RPT? Understand AME804.01
2 Explain the need for Rapid Prototyping Understand AME804.02
3 List the classification of RP systems Understand AME804.03
4 What are the advantages of Rapid Prototyping Remember AME804.02
5 Explain in detail the process chain of Rapid Prototyping Understand AME804.01
6 Explain the difference traditional prototyping and rapid prototyping. Understand AME804.01
7 Classify the rapid manufacturing processes. Understand AME804.02
8 Explain additive process in detail. Understand AME804.03
9 Explain subtractive process in rapid prototyping. Remember AME804.04
10 Discuss formative process in rapid prototyping. Understand AME804.02
11 Explain generative rapid prototyping process in detail. Understand AME804.01
12 Explain why rapid prototyping is additive process.
Understand AME804.02
13 What is Rapid Tool? Understand AME804.01
14 How does pattern differ from prototype? Understand AME804.02
15 How does digital prototyping differ from virtual prototyping? Remember AME804.01
Part - B (Long Answer Questions)
1 Discuss the evolution of RP systems indicating the history and
their growth rate in the industrial sector. Understand AME804.02
2 Summarize the key aspect of rapid prototyping. Explain With an
Understand AME804.01
example the historical development of rapid prototype technologies
3 Explain rapid prototyping, Explain the difference between traditional
Understand AME804.02
prototyping and rapid prototyping.
4 Categorize of applications in rapid prototype technology in Remember
manufacturing industries and also compare rapid prototype technology AME804.02
with computer numerical control technology.
4 Explain the classification of rapid manufacturing process, explain merits Understand
and demerits. AME804.01
5 Discuss the evolution of RP systems indicating the history and Understand
their growth rate in the industrial sector AME804.02
6 Explain in detail the process chain of Rapid Prototyping Understand AME804.01
7 Compare „Direct ‟ and „Indirect tooling‟ with classic examples Understand AME804.02
8 Explain, with suitable example, how rapid prototyping and tooling Understand
are the good examples as part of computer integrated AME804.01
Manufacturing.
9 Describe the steps involved in rapid prototyping process chain Remember AME804.02
10 Explain the Generic RP process with neat sketch. Understand AME804.01
11 Differentiate Subtractive Prototyping process and Additive
Remember AME804.02
Prototyping process
UNIT-II
CAD MODELLING AND DATA PROCESSING FOR RP

1 Explain cad modeling process, how cad modeling is done. Understand AME804.04
2 What are steps involved in modeling, what are steps involved in Cad
Understand AME804.05
modeling.
3 Explain plain data interfacing formats Understand AME804.05
4 Explain repair procedures. Remember AME804.06
5 Discuss about part orientation and support generation. Understand AME804.07
6 Explain support structure design. Understand AME804.06
7 Explain model slicing algorithm Understand AME804.05
8 Discuss about contour data organization. Understand AME804.06
9 Summarize direct slicing in detail. Remember AME804.07
10 Explain differences between direct and adaptive slicing Understand AME804.08
11 Summarize about adaptive slicing process Understand AME804.05
12 Explain tool path generation. Understand AME804.06
13 Explain data interfacing format, IGES, STL conversion. Understand AME804.04
14 Discuss about validity checks in conversion procedures. Understand AME804.05
15 Explain the procedures to be followed in repair a conversion. Remember AME804.06
Part - B (Long Answer Questions)
1 Explain Importance of part orientation in RP process in detail
Understand AME804.06
with neat sketch.
2 Explain procedure of tool path generation from the slicing file
Understand AME804.05
with flowchart
3 Discuss on STL files and Define slicing relevant to CAD Understand AME804.06
4 Explain in detail the structure of .STL file format and Enlighten
Remember AME804.07
the importance of .STL file format in RP.
5 Give the classification of slicing procedure. Explain slicing of
Understand AME804.08
tessellated cad model in detail.
6 Compare the shape-based and the product data-based exchange
standards. Which has the potential to support industrial Understand AME804.05
automation? Why?
7 Give the classification of slicing procedure. Explain slicing of tessellated
Understand AME804.06
cad model in detail.
8 Differentiate between core STL file and fine STL file. Understand AME804.04
 9 Explain any two translators used in place of STL. Remember AME804.05
10 Write short notes on following RP softwares: (i) Magics (ii) Mimics (iii)
Understand AME804.06
Velocity 2
UNIT-III
RP PROCESSES
Part - A (Short Answer Questions)
1 Compare LOM with SLS with suitable reasons. Understand AME804.09
2 Describe the working principle, advantages and disadvantages of SLA
Understand AME804.10
process with a neat diagram.
3 Write the models and specifications of different LOM machines used. Understand AME804.08
4 What are different types of materials available for the SLS system? What
Remember AME804.10
are their respective applications?
5 Explain about STL file problems in detail with examples. Understand AME804.09
6 Classify direct rapid tooling method. Understand AME804.10
7 What are the steps involved in production of inserts using 3D Keltool
Understand AME804.09
process
8 Explain about ceramic tooling process. Understand AME804.10
9 Explain the process of RTV epoxy tooling. Write advantages, disadvantages
and applications of it. Remember AME804.08
10 Compare rapid tooling and conventional tooling. Understand AME804.10
11 Write a short notes on rapid tools and DMILS Understand AME804.09
12 Explain aluminum filled epoxy tooling with a neat sketch Understand AME804.10
13 Compare hard tooling with soft tooling. Understand AME804.09
14 What are latest trends in rp material development and rp process
Understand AME804.10
development.
15 Differentiate between direct rapid tooling and indirect rapid tooling. Remember AME804.08
Part – B (Long Answer Questions)
1 Compare LOM with SLS with suitable reasons. Understand AME804.09
2 Describe the working principle, advantages and disadvantages of SLA
Understand AME804.10
process with a neat diagram.
4 What are different types of materials available for the SLS system?
Remember AME804.10
What are their respective applications?
5 Explain about STL file problems in detail with examples. Understand AME804.09
6 How is application of RP models related to the purpose of prototyping?
Understand AME804.10
How does it also relate to the materials used for prototyping?
7 List the types of industries that RP can be used in. List specific industrial
Understand AME804.09
applications.
8 What are the typical RP applications in design? Briefly describe each of Understand
these applications and illustrate them with examples. AME804.10

9 What are the typical RP applications in engineering and analysis? Briefly

describe each of them and illustrate them with examples Remember AME804.08
10 Describe how RP models can be used for pre-surgical operation planning.
Understand AME804.10
Use appropriate examples to illustrate your answer.
11 Why and in what circumstances would RP be considered to assist implant
fabrication Understand AME804.09
12 Describe two examples of how rapid prototyping and tooling techniques
would be preferred over conventional methods in the improvement of Understand AME804.10
patient care.
13 How would you differentiate between the following types of rapid tooling
processes: (a) direct soft tooling, (b) indirect soft tooling, (c) direct hard Understand AME804.09
tooling, and (d) indirect hard tooling.
14 Explain how a RP pattern can be used for vacuum casting with silicon
Understand AME804.10
molding. Use appropriate examples to illustrate your answer.
15 What are the ways the RP pattern can be used to create the injection mold
for plastic parts. Briefly describe the processes. Remember AME804.08
 16 Compare and contrast the use of RP patterns for
(i) casting of die inserts,
Understand AME804.10
(ii) sand casting, and
(iii) investment casting.
17 What are the RP systems that are suitable for sand casting? Briefly explain
Understand AME804.09
why and how they are suitable for sand casting?
18 Compare the relative merits of using LOM parts with SLA parts for
Understand AME804.10
investment casting.
19 Explain whether RP technology is more suitable for “high technology”
industries like aerospace than it is for consumer products industries like Remember AME804.09
electronic appliances. Give examples to substantiate your answer.
20 Explain how RP systems can be applied to traditional industries like the
Understand AME804.09
jewelry, coin and tableware industries.
UNIT-IV
PHOTO POLYMERIZATION
Part – A (Short Answer Questions)
1 Explain stereolithographic. Understand AME804.13
2 Discuss selective laser sintering. Understand AME804.14
3 Explain electron beam melting. Understand AME804.15
4 Explain extrusion-based rp systems. Remember AME804.09
5 Explain fused deposition modeling. Understand AME804.10
6 Explain electron beam melting. Understand AME804.08
7 Explain 3D Printing. Understand AME804.10
8 Explain sheet lamination. Remember AME804.09
9 Explain laminated object manufacturing. Understand AME804.10
10 Explain beam deposition. Understand AME804.09
11 Explain laser engineered net shaping. Understand AME804.10
12 Explain direct metal deposition. Remember AME804.08
13 Write any four limitation of laminated object manufacturing. Remember AME804.11
Part – B (Long Answer Questions)
1 Describe a laminated object manufacturing (LOM) process. Understand AME804.11
2 Explain Beam Deposition (LENS) rapid prototyping process in detail with
Remember AME804.11
neat sketch.
3 Explain in briefly fused deposition modeling process. Understand AME804.11
4 Explain a direct metal deposition (DMD) in rp process. Understand AME804.11
5 Comparison between selective laser sintering and 3D printing. Understand AME804.11
6 Name three material used in fused deposition modeling and state the Understand
AME804.11
advantages of this process.
7 Explain in briefly fused deposition modeling process. With neat sketches. Remember AME804.11
8 List out the technical specification of 3D printing machine. Understand AME804.11
9 What are merits and demerits of laminated object manufacturing. Understand AME804.11
10 Describe the process of fused deposition modeling and list the factors that
Understand AME804.11
affect the part quality
11 Write the models and specifications of different LOM machines used. Understand AME804.11
12 What are the factors that influence the performance of the 3D printing
Understand AME804.11
process? Explain in detail.
13 Explain the path generation in fusion decomposition modeling (FDM) Remember AME804.11
14 Explain laser generation process with neat sketch & also its applications? Understand AME804.11
15 List out the applications, advantages and disadvantages of laminated object
Understand AME804.11
manufacturing (LOM)?
UNIT-V
Errors in RP Processes:
Part - A (Short Answer Questions)
1 Explain errors in RP processes. Understand AME804.11
2 Explain pre-processing, in detail Understand AME804.11
3 Explain post processing errors. Understand AME804.11
4 Discuss part building errors in SLA. Remember AME804.11
 5 Explain part building errors in SLS. Understand AME804.11
6 Explain how Magics and Mimics software‟s help to build a product in AME804.11
Understand
Rapid Prototyping process
7 Write a short note on 3D expert software. Understand AME804.11
8 Describe about Missing Facets or Gaps? Understand AME804.11
9 What are the consequences of building a valid and invalid tessellated AME804.11
Remember
model.
10 How can the problem of overlapping facets be solved? Understand AME804.11
Part - B (Long Answer Questions)
1 Explain the different errors occurs in RP processes Understand AME804.11
2 Explain post-processor in detail. With a neat sketch Understand AME804.12
3 Name some other translators used in place of STL. Understand AME804.12
4 Explain pre-processing in detail. With a neat sketch Remember AME804.11
5 Discuss post-processing errors in detail. Understand AME804.11
6 Explain Part building errors in SLA in detail. Understand AME804.13
7 Explain Part building errors in SLA in detail. With a block diagram Understand AME804.13
8 Explain the error associated with STL file. Describe the steps involved in Understand AME804.14
solving „missing facets‟ problem.
9 Which type of part building errors in SLS. Remember AME804.11
10 List out the different errors occur in rp processes. Understand AME804.12

Prepared By:
Mr. M. Sunil Kumar, Assistant Professor

HOD, ME