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WorksheetsAdditive Manufacturing (AM) Technology – Detailed Notes
Total questions: 56
Worksheet time: 28mins
What is Additive Manufacturing (AM) and how does it address the limitations of traditional manufacturing processes such as casting, forming, and machining?
Additive Manufacturing (AM), also known as 3D printing, builds components layer by layer directly from a digital model, addressing limitations like tooling requirements, material wastage, long lead times, and geometric constraints.
Additive Manufacturing (AM) is a subtractive process that removes material from a block to create parts, which increases tooling requirements and material wastage.
Additive Manufacturing (AM) uses chemical reactions to bond materials, but does not address geometric constraints or lead times.
Additive Manufacturing (AM) relies on manual labor for forming and casting, making it similar to traditional manufacturing in terms of limitations.
Which of the following is NOT a key need addressed by Additive Manufacturing (AM)?
Rapid prototyping and faster product development cycles
Manufacturing of complex and customized geometries
Increased material wastage
On-demand and decentralized production
List any two industries where the scope of Additive Manufacturing (AM) is expanding.
Aerospace and defense, Automotive and transportation
Textile and fashion, Food and beverage
Education and tourism, Entertainment and sports
Retail and hospitality, Agriculture and fishing
Additive Manufacturing (AM) enables mass customization and economical production of customized parts.
True
False
Fill in the blank: Additive Manufacturing (AM) is a key pillar for ________ and ________, enabling smart, sustainable, and human-centric manufacturing.
Industry 4.0 and Industry 5.0
Automation and Robotics
Lean Manufacturing and Six Sigma
Mass Production and Assembly Line
Which of the following is a benefit of Additive Manufacturing (AM) in the context of design?
Design freedom
Increased tooling requirements
Longer lead times
Reduced geometric constraints
Explain the importance of lightweighting in Additive Manufacturing (AM) and name two industries where it is critical.
Lightweighting is critical for reducing the weight of components, which is especially important in aerospace and automotive industries.
Lightweighting in AM is mainly used to increase the cost of production and is critical in the textile and food industries.
Lightweighting in AM is important for making products heavier, which is essential in the mining and construction industries.
Lightweighting in AM is primarily for aesthetic purposes and is critical in the fashion and entertainment industries.
What concept emerged in the 1980s related to additive manufacturing?
Layer-by-layer fabrication
Subtractive machining
Thermal welding
Injection molding
Who invented Stereolithography (SLA) and founded 3D Systems in 1986?
Charles Hull
Chuck Yeager
Scott Crump
Steve Wozniak
Which technologies were developed in the late 1980s to 1990s?
Stereolithography (SLA) and Digital Light Processing (DLP)
Selective Laser Sintering (SLS) and Fused Deposition Modeling (FDM)
CAD/CAE and AI
Thermoplastics (ABS, PLA, Nylon)
During the Growth Phase (1990s–2000s), what was additive manufacturing primarily used for?
Rapid prototyping
Mass production of consumer goods
Medical implant fabrication
Automotive assembly line production
During the Growth Phase, additive manufacturing was mainly used in research labs and high-end industries.
True
False
Name one key development in the Modern Evolution phase (2010s–Present) of additive manufacturing.
Development of metal AM technologies (SLM, EBM, DED)
Invention of the steam engine
Discovery of penicillin
Introduction of the assembly line
Select two roles of additive manufacturing in modern product development.
Rapid prototyping and customization
Reducing the need for any design
Eliminating all manufacturing costs
Increasing manual labor
Which AM process uses liquid photopolymer resin cured by UV light?
Material Extrusion
Vat Photopolymerization
Fused Deposition Modeling
Selective Laser Sintering
What is an example of the Material Extrusion process?
Fused Deposition Modeling (FDM)
Selective Laser Sintering (SLS)
Stereolithography (SLA)
Electron Beam Melting (EBM)
Name two materials commonly used in Material Extrusion.
PLA and ABS
Wood and Glass
Copper and Gold
Paper and Cardboard
What is the process called where droplets of material are selectively deposited and cured, similar to inkjet printing, and used for multi-material and color printing, high-resolution parts?
Material Jetting
Fused Deposition Modeling
Selective Laser Sintering
Stereolithography
Which additive manufacturing process uses a liquid binder selectively deposited onto a powder bed and is suitable for metals, ceramics, and sand?
Binder Jetting
Fused Deposition Modeling
Selective Laser Sintering
Stereolithography
Which process involves sheets of material bonded layer by layer and includes methods such as Ultrasonic Additive Manufacturing (UAM) and Laminated Object Manufacturing (LOM)?
Sheet Lamination
Fused Deposition Modeling
Selective Laser Sintering
Stereolithography
Directed Energy Deposition (DED) uses focused thermal energy to melt material as it is deposited. Which of the following can be used as the energy source in DED?
Laser
Electron beam
Plasma arc
All of the above
Powder Bed Fusion (PBF) selectively fuses powder particles in a bed using thermal energy. Which of the following is NOT a type of PBF?
A) Selective Laser Melting (SLM)
B) Electron Beam Melting (EBM)
C) Laminated Object Manufacturing (LOM)
D) SLS
Which additive manufacturing process is commonly used for aerospace, medical implants, and complex metal parts?
Powder Bed Fusion (PBF)
Fused Deposition Modeling (FDM)
Stereolithography (SLA)
Laminated Object Manufacturing (LOM)
In Layer-by-Layer Fabrication Physics, material addition occurs in discrete layers. What are the bonding mechanisms involved?
Thermal fusion
Photopolymerization
Adhesive bonding
All of the above
Rapid heating and cooling rates, steep thermal gradients leading to residual stresses, and microstructure evolution influenced by cooling rate are characteristics of which process physics topic?
Heat Transfer and Thermal Cycles
Fluid Flow and Turbulence
Mechanical Deformation and Strain
Chemical Reaction Kinetics
Which of the following are energy sources in Additive Manufacturing (AM)?
Lasers (CO₂, fiber, Nd:YAG)
Electron beams
Both A and B
None of the above
Fill in the blank: One advantage of additive manufacturing is ________ design flexibility.
high
low
limited
restricted
Fill in the blank: Additive manufacturing helps in reduced ________ waste.
material
energy
time
labor
Fill in the blank: Additive manufacturing allows for shorter ________ times.
lead
break
shift
pause
Fill in the blank: Additive manufacturing enables ________ production, meaning no need for traditional tools.
tool-less
manual
expensive
slow
Fill in the blank: Additive manufacturing leads to part consolidation and ________ reduction.
weight
cost
size
speed
Fill in the blank: One limitation of additive manufacturing is limited ________ size.
build
color
speed
material
Fill in the blank: Additive manufacturing may have surface finish and ________ accuracy issues.
dimensional
thermal
color
weight
Fill in the blank: Additive manufacturing has high equipment and ________ cost.
material
labor
transportation
maintenance
Fill in the blank: Additive manufacturing can result in ________ mechanical properties.
anisotropic
isotropic
homogeneous
uniform
Fill in the blank: Additive manufacturing often requires post-________.
processing
designing
cooling
assembly
Fill in the blank: Additive manufacturing is cost-effective for low-volume and ________ production.
customized
mass
standardized
automated
Fill in the blank: Additive manufacturing reduces tooling and ________ costs.
inventory
labor
transportation
energy
Fill in the blank: Additive manufacturing has higher per-part cost for ________ production.
mass
custom
prototype
limited
Fill in the blank: Lifecycle cost benefits of additive manufacturing are due to lightweighting and ________.
performance
coloring
packaging
branding
Which of the following is an application domain of additive manufacturing?
Aerospace
Automotive
Biomedical
All of the above
Fill in the blank: In the aerospace industry, additive manufacturing is used for lightweight ________ and fuel nozzles.
brackets
wings
engines
panels
Fill in the blank: In the automotive industry, additive manufacturing is used for prototypes, tooling, and ________ components.
EV
plastic
hydraulic
manual
Fill in the blank: In the biomedical field, additive manufacturing is used for implants, prosthetics, and ________ applications.
dental
aerospace
automotive
textile
Fill in the blank: In manufacturing, additive manufacturing is used for jigs, fixtures, and ________ parts.
spare
broken
large
decorative
Fill in the blank: In the energy sector, additive manufacturing is used for turbine components and ________ exchangers.
heat
water
air
power
Which of the following is a key benefit realized in the aerospace industry through Additive Manufacturing?
Increased weight
Weight reduction (up to 30–60%)
Reduced fuel efficiency
Increased maintenance requirements
Which company employs Additive Manufacturing for rocket engine components, combustion chambers, and injectors, reducing development time and cost?
GE Aviation
Airbus
NASA
Boeing
Which company uses Additive Manufacturing for rapid prototyping of battery components, tooling, and fixtures, significantly reducing development lead time?
BMW Group
Tesla
General Motors (GM)
Ford
Fill in the blank: In EVs and modern automobiles, Additive Manufacturing supports rapid development, lightweighting, and ______ integration.
functional
mechanical
thermal
visual
Which of the following is NOT a benefit realized in the biomedical sector through Additive Manufacturing?
A) Mass customization for individual patients
B) Reduced surgery time
C) Increased patient outcomes
D) Increased lead time
Patient-specific implants are manufactured using titanium hip and knee implants with porous lattice structures to promote ______.
bone ingrowth
muscle growth
cartilage formation
fat deposition
Which application uses Additive Manufacturing for crowns, bridges, aligners, and surgical guides using vat photopolymerization and material jetting?
Patient-Specific Implants
Dental Applications
Prosthetics and Orthotics
Aerospace Components
Based on the summary passage: Additive Manufacturing has transitioned from a prototyping tool to a ________ industrial manufacturing technology.
strategic
temporary
obsolete
experimental
Based on the summary passage: Which industries have successfully adopted Additive Manufacturing?
A) Aerospace, electric vehicles, and biomedical industries
B) Agriculture and textile industries
C) Food and beverage industries
D) Construction and mining industries
What role will Additive Manufacturing play as materials, processes, and standards mature?
Additive Manufacturing will play an increasingly critical role in sustainable, digital, and advanced engineering manufacturing systems.
Additive Manufacturing will become obsolete as traditional methods dominate.
Additive Manufacturing will only be used for prototyping and not for production.
Additive Manufacturing will have no impact on future manufacturing systems.
