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3D printing > 3D printing > Flashcards

3D printing Flashcards

1
Q

FDM

A

Fused Deposition Modeling

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2
Q

CC

A

Contour crafting

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3
Q

SLS

A

Selective Laser Sintering

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4
Q

SLM

A

Selective Laser Melting

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5
Q

DMLS

A

Direct Metal Laser sintering

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6
Q

EBM

A

Electron Beam Melting

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7
Q

SLA

A

Stereolithography

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8
Q

LOM

A

Laminated Object Manufacturing

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9
Q

LENS

A

Laser Engineered Net Shaping

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10
Q

EBW

A

Electron Beam Welding

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11
Q

FDM is in which category?

A

Material extrusion

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12
Q

SLS is in which category?

A

Powder bed fusion

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13
Q

SLM is in which category?

A

Powder bed fusion

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14
Q

DMLS is in which category?

A

Powder bed fusion

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15
Q

EBM is in which category?

A

Powder bed fusion

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16
Q

SLA is in which category?

A

Vat photopolymerization

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17
Q

Polyjet/Inkjet printing is in which category?

A

Material Jetting

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18
Q

Indirect Inkjet printing is in which category?

A

Binding Jetting

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19
Q

LOM is in which category?

A

Sheet lamination

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20
Q

LENS is in which category?

A

Directed Energy deposition

21
Q

EBW is in which category?

A

Directed Energy deposition

22
Q

What is the process of Material extrusion?

A
  1. Filament Feed: A spool of thermoplastic filament is fed into the printer.
  2. Heating: The filament is heated to its melting point inside a nozzle.
  3. Extrusion: The molten material is extruded layer by layer through the nozzle onto the build platform.
  4. Layer Formation: Each layer solidifies and adheres to the previous layer as the nozzle moves according to the design.
23
Q

What is the process of Powder bed fusion

A
  1. Powder Spreading: A thin layer of powder material is spread across the build platform.
  2. Laser/Beam Exposure: A laser or electron beam selectively fuses powder particles in the desired pattern for the layer.
  3. Lowering Bed: The build platform is lowered by one layer thickness.
  4. Repeat: Steps 1-3 are repeated until the entire object is built.
  5. Cooling and Unpacking: Once printing is complete, the object is allowed to cool before being removed from the unbound powder.
24
Q

What is the process of Vat photopylumerization

A
  1. Resin Pooling: A vat is filled with liquid photopolymer resin.
  2. Layer Exposure: A light source (usually UV) cures the resin in specific patterns, solidifying one layer at a time.
  3. Platform Elevation: The build platform lifts, allowing new resin to flow beneath the cured layer.
  4. Repetition: Steps 2-3 are repeated until the object is fully formed.
  5. Post-Processing: The object is removed and often post-cured with additional light exposure.
25
Q

What is the process of Material Jetting?

A
  1. Droplet Ejection: Tiny droplets of photopolymer or wax are jetted onto the build platform in the desired pattern.
  2. Curing: UV light cures and solidifies the material immediately after it is deposited.
  3. Layer Formation: The build platform is lowered slightly, and the next layer is deposited.
  4. Repeat: Steps 1-3 are repeated until the object is complete.
26
Q

What is the process of Binding Jetting?

A
  1. Powder Spreading: A thin layer of powder is spread across the build platform.
  2. Binder Application: A liquid binding agent is selectively deposited to glue the powder particles together in the desired pattern.
  3. Lowering Bed: The build platform is lowered by one layer thickness.
  4. Repeat: Steps 1-3 are repeated until the entire object is built.
  5. Curing and Post-Processing: The object is cured to solidify the binder and often requires additional post-processing like sintering.
27
Q

What is the process of Sheet lamination?

A
  1. Sheet Feeding: Sheets of material (paper, plastic, metal) are fed into the machine.
  2. Bonding: Adhesive or thermal bonding is used to laminate sheets together.
  3. Cutting: A laser or knife cuts the laminated sheets into the desired shape.
  4. Layer Formation: Layers are bonded and cut sequentially to form the final object.
  5. Post-Processing: Excess material is removed, and the object may undergo additional finishing processes.
28
Q

What is the process of Directed energy deposition?

A
  1. Material Feeding: Metal wire or powder is fed into the path of a focused energy source (laser, electron beam, or plasma arc).
  2. Melting: The energy source melts the material, depositing it onto the build surface or an existing part.
  3. Layer Formation: The deposition head moves to create the desired shape, layer by layer.
  4. Solidification: Each deposited layer cools and solidifies quickly.
  5. Repeat: Steps 1-4 are repeated until the object is fully formed, often requiring simultaneous multi-axis movement for complex geometries.
29
Q

Power source Material extrusion?

A

Thermal energy (heat)

30
Q

Power source Powder bed fusion?

A

Higher powered laser beam / Electron beam

31
Q

Power source Vat photopolymerization?

A

UV laser (ultraviolet laser)

32
Q

Power source Material Jetting?

A

Thermal energy / Photocuring

33
Q

Power source Binding Jetting?

A

Thermal energy (heat)

34
Q

Power source Sheet lamination?

A

Laser beam

35
Q

Power source Directed energy deposition?

A

Laser beam

36
Q

Printing ‘ink’ Material extrusion?

A

Thermoplastics
Ceramic slurries
Metal pastes

37
Q

Printing ‘ink’ Powder bed fusion?

A

Atomized metal powder
Stainless steel
Cobalt
Chromium
Titanium
Ceramic powder

38
Q

Printing ‘ink’ Vat photopolymerization?

A

Photopolymer Ceramics

39
Q

Printing ‘ink’ Material Jetting?

A

Photopolymer wax

40
Q

Printing ‘ink’ Binding Jetting?

A

Polymer powder
Ceramic powder
Metal powder

41
Q

Printing ‘ink’ Sheet lamination?

A

Plastic film
Metallic sheet
Ceramic Tape

42
Q

Printing ‘ink’ Directed energy deposition?

A

Molten metal powder

43
Q

Pro’s/Con’s Material extrusion?

A

Relatively cheap machine
Multi-material printing
Limited resolution
Poor surface finish

44
Q

Pro’s/Con’s Powder bed fusion?

A

High accuracy and detail
Fully dense parts
High specific strength & stiffness
Powder handling & recycling
Support structure needed

45
Q

Pro’s/Con’s Vat photopolymerization?

A

High building speed
Good part resolution
Overcuring
High costs

46
Q

Pro’s/Con’s Material jetting?

A

Multi-material
High surface finish
Low-strength material

47
Q

Pro’s/Con’s Binding jetting?

A

Requires infiltration during post-processing
Wide material selection
High porosity

48
Q

Pro’s/Con’s Sheet lamination

A

High surface finish
Low cost
Decubing

49
Q

Pro’s/Con’s Directed energy deposition

A

Repair
Functionally graded material
Require post processing machine

3D printing (1 decks)

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