Additive Manufacturing Flashcards
Name the AM manufacturing process(es) which encompass metal powder bed fusion
Laser Powder Bed Fusion (L-PBF)
Electron Beam Melting (EBM)
Name the AM manufacturing process(es) which encompass metal powder deposition
Laser Powder Directed Energy Deposition (LP-DED)
Name the AM manufacturing process(es) which encompass metal powder and binder material
3 Dimensional Printing (3DP)
Name the AM manufacturing process(es) which encompass solid metal filament deposition
Electron Beam Additive Manufacturing (EBAM)
Joule Printing (JP)
Name the AM manufacturing process(es) which encompass solid metal extrusion
Atomic Diffusion AM (ADAM)
Bound Metal Deposition (BMD)
Name the AM manufacturing process(es) which encompass polymer powder
Selective Laser Sintering (SLS)
Name the AM manufacturing process(es) which encompass polymer powder and agents
3 Dimensional Printing (3DP)
Multi Jet Fusion (MJF)
Name the AM process(es) which encompass liquid polymer photopolymerization through UV lamp
Polyjet/ Multi-jet modeling (MJM) or multi-jet printing (MJP)
Digital Light Processing (DLP)
Name the AM process(es) which encompass liquid polymer photopolymerization through laser
Stereolithography (SLA)
Name the AM process(es) which encompass solid polymer jetting
Drop on Demand (DoD)
Arburg Plastic Freeforming (APF)
Name the AM process(es) which encompass solid polymer extrusion
Fused Deposition Modelling (FDM)
Continuous Filament Fabrication (CFF)
What are the pros and cons of Laser Powder Bed Fusion (L-PBF)?
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
What are the pros and cons of Electron Beam Melting (EBM)
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
What are the pros and conts of Laser Powder Directed Energy Deposition (LP-DED)
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
What are the pros and cons of Binder Jetting (BJ)/ 3 Dimensional Printing (3DP) (Metal)
Pros
* High productivity
* Generally cheaper than PBF
* No need for supports
Cons
* Requires post-processing
* Limited diffusion
* Some materials need bronze
infiltration
What are the pros and cons of Electron Beam Additive Manufacturing (EBAM)?
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
What are the pros and cons of Joule Printing (JP), also known as Directed Energy Deposition?
Pros
* Reduced waste (all material used)
* Cheaper than powder processes
* Easier handling than powders
* High print speed
Cons
* Rough surfaces
* Lower precision
* Single material
What are the pros and cons of Bound Metal Deposition (BMD)?
Pros
* Generally cheaper
* Safer handling
* Reduced waste
* Easier support removal
Cons
* Rigid post-processing required
(debinding and sintering)
* Lower density
* Less precise
What are the pros and cons of Atomic Diffusion AM (ADAM)?
Pros
* Generally cheaper
* Safer handling
* Reduced waste
* Easier support removal
Cons
* Rigid post-processing required
* Rough surface
* Lower precision
What are the pros and cons of Selective Laser Sintering (SLS)?
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
What are the pros and cons of 3 Dimensional Printing (Polymer)?
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
What are the pros and cons of MultiJet Fusion (MJF)?
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
What are the pros and cons of Stereolithography (SLA)?
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
What are the pros and cons of Digital Light Processing (DLP)?
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
What are the pros and cons of PolyJet / Multi-jet modelling and printing?
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
What are the pros and cons of Drop on Demand (DoD)?
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
What are the pros and cons of Arburg Plastic Freeforming (APF)?
Pros
* High material availability
* Multi-material possible
* High resolution
* Fast build times
Cons
* Costly
* Material preparation
* Support removal
* Anisotropic properties
What are the pros and cons of Fused Deposition Modelling (FDM)?
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
What are the pros and cons of Continuous Filament Fabrication (CFF)?
Pros
* High mechanical properties
* Good strength-to-weight ratio
Cons
* Higher material cost
* Complex process
* Limited material availability
