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Additive Manufacturing > Additive Manufacturing > Flashcards

Additive Manufacturing Flashcards

1
Q

Name the AM manufacturing process(es) which encompass metal powder bed fusion

A

Laser Powder Bed Fusion (L-PBF)
Electron Beam Melting (EBM)

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2
Q

Name the AM manufacturing process(es) which encompass metal powder deposition

A

Laser Powder Directed Energy Deposition (LP-DED)

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3
Q

Name the AM manufacturing process(es) which encompass metal powder and binder material

A

3 Dimensional Printing (3DP)

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4
Q

Name the AM manufacturing process(es) which encompass solid metal filament deposition

A

Electron Beam Additive Manufacturing (EBAM)
Joule Printing (JP)

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5
Q

Name the AM manufacturing process(es) which encompass solid metal extrusion

A

Atomic Diffusion AM (ADAM)
Bound Metal Deposition (BMD)

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6
Q

Name the AM manufacturing process(es) which encompass polymer powder

A

Selective Laser Sintering (SLS)

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7
Q

Name the AM manufacturing process(es) which encompass polymer powder and agents

A

3 Dimensional Printing (3DP)
Multi Jet Fusion (MJF)

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8
Q

Name the AM process(es) which encompass liquid polymer photopolymerization through UV lamp

A

Polyjet/ Multi-jet modeling (MJM) or multi-jet printing (MJP)
Digital Light Processing (DLP)

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9
Q

Name the AM process(es) which encompass liquid polymer photopolymerization through laser

A

Stereolithography (SLA)

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10
Q

Name the AM process(es) which encompass solid polymer jetting

A

Drop on Demand (DoD)
Arburg Plastic Freeforming (APF)

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11
Q

Name the AM process(es) which encompass solid polymer extrusion

A

Fused Deposition Modelling (FDM)
Continuous Filament Fabrication (CFF)

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12
Q

What are the pros and cons of Laser Powder Bed Fusion (L-PBF)?

A

Pros
* Complex geometries
* Results comparable with casting
* Definitive metallic materials
Cons
* Support removal
* Can’t exploit full working volume
* Needs stress relief (heat treating)
* Rougher surfaces than machining

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13
Q

What are the pros and cons of Electron Beam Melting (EBM)

A

Pros
* Results comparable with casting
* Complex geometres
* Definitive metallic materials
* No significant residual stresses
* Can exploit full working volume
Cons
* Support removal
* Rougher surfaces than machining (however better than L-PBF

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14
Q

What are the pros and conts of Laser Powder Directed Energy Deposition (LP-DED)

A

Pros
* No size limitation
* Lesser amount of shielding gas
needed
* Multi-material components
possible
* Final alloy possible with process
Cons
* Complex process control
* Higher size and roughness
tolerances than pbf
* Needs machine tool finishing

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15
Q

What are the pros and cons of Binder Jetting (BJ)/ 3 Dimensional Printing (3DP) (Metal)

A

Pros
* High productivity
* Generally cheaper than PBF
* No need for supports
Cons
* Requires post-processing
* Limited diffusion
* Some materials need bronze
infiltration

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16
Q

What are the pros and cons of Electron Beam Additive Manufacturing (EBAM)?

A

Pros
* High productivity
* Higher building volume than PBF
* Wide range of materials
* Can make final alloy in machine
Cons
* Needs high vacuum to operate
* Requires machining
* Complex management system
and technology

17
Q

What are the pros and cons of Joule Printing (JP), also known as Directed Energy Deposition?

A

Pros
* Reduced waste (all material used)
* Cheaper than powder processes
* Easier handling than powders
* High print speed
Cons
* Rough surfaces
* Lower precision
* Single material

18
Q

What are the pros and cons of Bound Metal Deposition (BMD)?

A

Pros
* Generally cheaper
* Safer handling
* Reduced waste
* Easier support removal
Cons
* Rigid post-processing required
(debinding and sintering)
* Lower density
* Less precise

19
Q

What are the pros and cons of Atomic Diffusion AM (ADAM)?

A

Pros
* Generally cheaper
* Safer handling
* Reduced waste
* Easier support removal
Cons
* Rigid post-processing required
* Rough surface
* Lower precision

20
Q

What are the pros and cons of Selective Laser Sintering (SLS)?

A

Pros
* Good dimensional tolerances and
surface roughness
* Definitive thermoplastic materials
* High productivity
* Can utilize the work volume
* Absence of supports
* Absence of post-treatment
Cons
* Limited material availability
* More suited for prototypes
* Long times for material change

21
Q

What are the pros and cons of 3 Dimensional Printing (Polymer)?

A

Pros
* Photorealistic rendering with color
printing
* High productivity
* Variable performance through
choice of infiltrator
* Absence of supports
Cons
* Non-definitive material with
limited mechanical performance
* Can’t exploit entire working
volume

22
Q

What are the pros and cons of MultiJet Fusion (MJF)?

A

Pros
* High accuracy and resolution
* High mechanical performance
* Virtually isotropic parts
* High productivity
* Fast and cost-effective
* Can use full working volume
Cons
* Higher roughness compared to
photocurable polymers
* Unclear recyclability of parts
* Limited availabity of materials

23
Q

What are the pros and cons of Stereolithography (SLA)?

A

Pros
* Best performance in terms of
dimensional tolerances and
surface roughness
* Can create transparent elements
* Disposable investment casting
models
Cons
* Thermosetting materials
* Supports in same material as part
* Can’t exploit entire volume
* Limited stability due to residual
stresses

24
Q

What are the pros and cons of Digital Light Processing (DLP)?

A

Pros
* Good dimensional tolerance and
surface roughness
* Can make transparent parts
* Absence of post-treatment
* Limited contact with liquid
* Wide range of photopolymers
Cons
* Thermosetting materials
* Need for supports
* Limited work volume
* Can’t exploit entire work volume

25
Q

What are the pros and cons of PolyJet / Multi-jet modelling and printing?

A

Pros
* Good dimensional tolerances and
surface roughness
* Soluble supports
* Can create transparent parts
* Absence of post-treatment
* No contact with liquid
Cons
* Thermosetting
* Discrete deposition of the
material
* Can’t exploit entire working
volume

26
Q

What are the pros and cons of Drop on Demand (DoD)?

A

Pros
* Excellent dimensional tolerances
and surface roughness
* Soluble supports
* Non-toxic and castable materials
* Absence of post-treatment
Cons
* Limited mechanical properties
* Limited volumes
* Low build speed
* Can’t use entire working volume

27
Q

What are the pros and cons of Arburg Plastic Freeforming (APF)?

A

Pros
* High material availability
* Multi-material possible
* High resolution
* Fast build times
Cons
* Costly
* Material preparation
* Support removal
* Anisotropic properties

28
Q

What are the pros and cons of Fused Deposition Modelling (FDM)?

A

Pros
* Good dimensional tolerances and
surface roughness
* Soluble supports
* Definitive thermoplastic materials
* Absence of post-treatment
Cons
* Coarser dimensional accuracy and
surface roughness
* Need for support removal
* Can’t exploit entire work volume

29
Q

What are the pros and cons of Continuous Filament Fabrication (CFF)?

A

Pros
* High mechanical properties
* Good strength-to-weight ratio
Cons
* Higher material cost
* Complex process
* Limited material availability

Additive Manufacturing (1 decks)

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