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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
What is the process of Material Jetting?
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
What is the process of Binding Jetting?
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
What is the process of Sheet lamination?
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
What is the process of Directed energy deposition?
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
Power source Material extrusion?
Thermal energy (heat)
30
Power source Powder bed fusion?
Higher powered laser beam / Electron beam
31
Power source Vat photopolymerization?
UV laser (ultraviolet laser)
32
Power source Material Jetting?
Thermal energy / Photocuring
33
Power source Binding Jetting?
Thermal energy (heat)
34
Power source Sheet lamination?
Laser beam
35
Power source Directed energy deposition?
Laser beam
36
Printing 'ink' Material extrusion?
Thermoplastics Ceramic slurries Metal pastes
37
Printing 'ink' Powder bed fusion?
Atomized metal powder Stainless steel Cobalt Chromium Titanium Ceramic powder
38
Printing 'ink' Vat photopolymerization?
Photopolymer Ceramics
39
Printing 'ink' Material Jetting?
Photopolymer wax
40
Printing 'ink' Binding Jetting?
Polymer powder Ceramic powder Metal powder
41
Printing 'ink' Sheet lamination?
Plastic film Metallic sheet Ceramic Tape
42
Printing 'ink' Directed energy deposition?
Molten metal powder
43
Pro's/Con's Material extrusion?
Relatively cheap machine Multi-material printing Limited resolution Poor surface finish
44
Pro's/Con's Powder bed fusion?
High accuracy and detail Fully dense parts High specific strength & stiffness Powder handling & recycling Support structure needed
45
Pro's/Con's Vat photopolymerization?
High building speed Good part resolution Overcuring High costs
46
Pro's/Con's Material jetting?
Multi-material High surface finish Low-strength material
47
Pro's/Con's Binding jetting?
Requires infiltration during post-processing Wide material selection High porosity
48
Pro's/Con's Sheet lamination
High surface finish Low cost Decubing
49
Pro's/Con's Directed energy deposition
Repair Functionally graded material Require post processing machine

3D printing (1 decks)

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