Additive Manufacturing (AM) Quiz
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Questions and Answers

In Fused Deposition Modeling (FDM), the filament is melted in a ______ that moves in XY direction.

nozzle

In FDM, molten plastic is then extruded from the ______ and then deposited on the build platform.

nozzle

In FDM, the molten plastic is deposited on the ______ in layers until the part is finished.

build platform

In Stereolithography (SLA), the ______ traces the path of the geometry/pattern that is being produced.

<p>Laser</p> Signup and view all the answers

In SLA, the resin hardens after ______ exposure.

<p>laser</p> Signup and view all the answers

Fused Deposition Modeling (FDM) is a type of ______ technology.

<p>Additive Manufacturing</p> Signup and view all the answers

In FDM, the plastic is melted and deposited in ______ on the build platform.

<p>layers</p> Signup and view all the answers

The build platform is a part of the ______ process in FDM.

<p>FDM</p> Signup and view all the answers

Stereolithography (SLA) is a type of ______ technology.

<p>Additive Manufacturing</p> Signup and view all the answers

Additive Manufacturing refers to a class of technologies that can automatically construct physical models from ______ data.

<p>Computer-Aided Design (CAD)</p> Signup and view all the answers

Additive Manufacturing is synonymous to ______ printing.

<p>3D</p> Signup and view all the answers

The first techniques for rapid prototyping became available in the late ______.

<p>1980s</p> Signup and view all the answers

In Additive Manufacturing, physical models are formed by adding ______ layer by layer.

<p>materials</p> Signup and view all the answers

The application of Additive Manufacturing in the ______ industry is one of the many uses of this technology.

<p>Automotive</p> Signup and view all the answers

The ______ stage of the Additive Manufacturing process involves creating a geometric model.

<p>first</p> Signup and view all the answers

Additive Manufacturing is used in ______ applications such as creating prosthetics and implants.

<p>Bioengineering</p> Signup and view all the answers

The ______ stage of the Additive Manufacturing process involves slicing the model into thin cross-sectional layers.

<p>third</p> Signup and view all the answers

The software ______ is used for Geometric Modeling.

<p>Pro/Engineer</p> Signup and view all the answers

According to the Wohlers Report 2021, ______ percent of Additive Manufacturing applications are for end use parts.

<p>32</p> Signup and view all the answers

Tessellation is a process of dividing a ______ into smaller units.

<p>surface</p> Signup and view all the answers

The process of ______ involves dividing a 3D model into 2D layers.

<p>Slicing</p> Signup and view all the answers

RP machines build one layer at a time during the process of ______ of Layers.

<p>constructing</p> Signup and view all the answers

The final step in 3D printing is ______ and Finishing.

<p>Cleaning</p> Signup and view all the answers

Fusion360 is a software used for ______ Modeling.

<p>Geometric</p> Signup and view all the answers

SolidWorks is a software used for ______ Modeling.

<p>Geometric</p> Signup and view all the answers

The University of the Philippines ______ is the department that teaches Geometric Modeling.

<p>Diliman</p> Signup and view all the answers

The department that teaches Geometric Modeling is the ______ of Mechanical Engineering.

<p>Department</p> Signup and view all the answers

Laminated Object Manufacturing is a type of ______ process.

<p>manufacturing</p> Signup and view all the answers

Electron Beam Melting is a process wherein parts are formed by melting ______ powder layer per layer with an electron beam.

<p>metal</p> Signup and view all the answers

Titanium alloys are widely used in Electron Beam Melting technology which makes it a suitable ______ for medical implant market.

<p>choice</p> Signup and view all the answers

Electron Beam Melting has a ______ layer thickness of at least 0.05mm.

<p>minimum</p> Signup and view all the answers

Electron Beam Melting is used in the production of ______ parts.

<p>aerospace</p> Signup and view all the answers

High quality ______ melting enables high material properties in Electron Beam Melting.

<p>vacuum</p> Signup and view all the answers

The vacuum requirement in Electron Beam Melting entails additional ______.

<p>costs</p> Signup and view all the answers

Electron Beam Melting is applicable to ______, ceramics, and composites.

<p>metals</p> Signup and view all the answers

Electron Beam Melting is a ______ process.

<p>precise</p> Signup and view all the answers

The ______ is lowered and a new layer of powder is spread.

<p>fabrication bed</p> Signup and view all the answers

SLS polyamide (nylon) material enables full functional ______ production.

<p>prototype</p> Signup and view all the answers

High shrinkage ratios can result in ______, bending, or dimensional inaccuracy.

<p>torsion</p> Signup and view all the answers

Rubber like parts can be manufactured directly from ______ for seals and sealing elements.

<p>polymer</p> Signup and view all the answers

SLS feature details are not precise as in ______ parts.

<p>SLA</p> Signup and view all the answers

Glass-filled nylon is resistant to high ______ and chemical environments.

<p>temperature</p> Signup and view all the answers

The surface finish of SLS parts are not good as ______ parts.

<p>SLA</p> Signup and view all the answers

A layer of ______ is placed in the fabrication bed.

<p>powder</p> Signup and view all the answers

High power laser ______ the powder that it traced.

<p>fuses</p> Signup and view all the answers

What is the main advantage of Laminated Object Manufacturing (LOM) in terms of material costs?

<p>Low cost due to readily available raw material</p> Signup and view all the answers

What is the main limitation of Laminated Object Manufacturing (LOM) in terms of part complexity?

<p>Production of complex parts is difficult</p> Signup and view all the answers

What is the main difference between SLA and SLS in terms of surface finish?

<p>SLA has a better surface finish than SLS</p> Signup and view all the answers

What is the main advantage of using SLS polyamide (nylon) material for production?

<p>Enables full functional nylon production</p> Signup and view all the answers

What is a characteristic of SLS polyamide (nylon) material?

<p>Full functional production</p> Signup and view all the answers

What is the main application of Lompoxy material?

<p>Used for LOM usage</p> Signup and view all the answers

What is a material used in Laminated Object Manufacturing?

<p>Paper</p> Signup and view all the answers

What is the main advantage of using rubber-like parts manufactured directly from SLS for high-temperature applications?

<p>They are resistant to high temperature and chemical environments</p> Signup and view all the answers

What is a difference between SLA and SLS surface finish?

<p>SLS has a rougher finish</p> Signup and view all the answers

What is the main property of Glass-filled nylon material?

<p>Resistant to high temperature and chemical environments</p> Signup and view all the answers

What is an application of 3D printed rubber-like parts?

<p>High-temperature applications</p> Signup and view all the answers

What is a characteristic of Lompoxy material?

<p>Chemical resistance</p> Signup and view all the answers

What is a limitation of SLS parts?

<p>Poor surface finish</p> Signup and view all the answers

What is a step in the Electron Beam Melting process?

<p>The build platform is lowered and a new layer of powder is spread</p> Signup and view all the answers

What is the main advantage of using Electron Beam Melting (EBM) in the medical implant market?

<p>Titanium alloys are widely used</p> Signup and view all the answers

What is the minimum layer thickness in Electron Beam Melting (EBM)?

<p>0.05mm</p> Signup and view all the answers

What is the primary characteristic of Electron Beam Melting (EBM) that enables high material properties?

<p>High vacuum melting</p> Signup and view all the answers

What is the primary application of Electron Beam Melting (EBM)?

<p>All of the above</p> Signup and view all the answers

What is the main disadvantage of Electron Beam Melting (EBM)?

<p>Vacuum requirement entails additional costs</p> Signup and view all the answers

What type of materials can be used with Electron Beam Melting (EBM)?

<p>Metals, ceramics, and composites</p> Signup and view all the answers

What is the characteristic of Electron Beam Melting (EBM) that makes it suitable for precise parts?

<p>Precise process control</p> Signup and view all the answers

What is a characteristic of Glass-filled nylon SLS material?

<p>It is resistant to high temperature and chemical environments</p> Signup and view all the answers

What is the main advantage of SLS polyamide (nylon) material in prototype production?

<p>It enables full functional prototype production</p> Signup and view all the answers

What is the difference between SLA and SLS parts in terms of surface finish?

<p>SLS parts have a lower surface finish than SLA parts</p> Signup and view all the answers

What is the application of SLS 3D printed rubber-like parts?

<p>For seals and sealing elements that are exposed to high temperature</p> Signup and view all the answers

What is the process of Laminated Object Manufacturing?

<p>A type of 3D printing process that uses layers of paper or sheet material</p> Signup and view all the answers

What is the advantage of SLS material in terms of temperature resistance?

<p>It has a high temperature resistance</p> Signup and view all the answers

What is the difference between SLS and SLA parts in terms of feature details?

<p>SLA parts have more precise feature details than SLS parts</p> Signup and view all the answers

What is a characteristic of SLS polyamide (nylon) material?

<p>Full functional production</p> Signup and view all the answers

What is a limitation of Laminated Object Manufacturing process?

<p>It produces rough surface finish</p> Signup and view all the answers

How does the surface finish of SLA parts compare to SLS parts?

<p>SLA has better surface finish</p> Signup and view all the answers

What is a potential application of 3D printed rubber-like parts?

<p>High-temperature applications</p> Signup and view all the answers

What is a characteristic of Lompoxy material?

<p>Resistance to chemicals</p> Signup and view all the answers

What is a common use of Lompoxy material?

<p>Biomedical applications</p> Signup and view all the answers

What is a process used in Laminated Object Manufacturing?

<p>Layer-by-layer bonding</p> Signup and view all the answers

What is a key advantage of using SLS polyamide (nylon) material for production?

<p>Full functional prototype production</p> Signup and view all the answers

What is a characteristic of SLS polyamide (nylon) material?

<p>Rubber-like properties</p> Signup and view all the answers

What is the main difference between SLA and SLS in terms of surface finish?

<p>SLA has a smoother surface finish</p> Signup and view all the answers

What is the main advantage of Laminated Object Manufacturing (LOM) in terms of material costs?

<p>Low material costs</p> Signup and view all the answers

What is a limitation of Laminated Object Manufacturing (LOM) in terms of part complexity?

<p>Difficulty in producing complex geometries</p> Signup and view all the answers

What are rubber-like parts manufactured from, suitable for high-temperature applications?

<p>SLS polyamide (nylon) material</p> Signup and view all the answers

What is a characteristic of Lompoxy material?

<p>High temperature resistance</p> Signup and view all the answers

What is a use of Lompoxy material?

<p>Seals and sealing elements</p> Signup and view all the answers

What is a characteristic of SLS polyamide (nylon) material in terms of surface finish?

<p>Rough surface finish</p> Signup and view all the answers

What is an advantage of using SLS polyamide (nylon) material for production?

<p>Full functional prototype production</p> Signup and view all the answers

Study Notes

Additive Manufacturing (AM)

  • Refers to a class of technologies that can automatically construct physical models from Computer-Aided Design (CAD) data.
  • Also known as 3D printing.
  • Formed by adding materials layer by layer.

Why is AM relevant?

  • Sales: 3%
  • Metal tooling: 4%
  • Polymer pattern: 7%
  • Functional prototypes: 25%
  • Jigs and fixtures: 7%
  • Cosmetic models: 10%
  • End-use parts: 32%
  • Education and research: 12%

Applications of AM

  • Art
  • Dental applications
  • Automotive industry
  • Bioengineering
  • Aerospace applications
  • Fashion

Additive Manufacturing Process

    1. Geometric Modeling
    1. Tessellation of the geometric model
    1. Slicing of the model into thin cross-sectional layers
    1. Constructing the model
    1. Finishing and cleaning

Geometric Modeling

  • Software used: Pro/Engineer, Fusion360, SolidWorks

Constructing of Layers

  • RP machines build one layer at a time

Fused Deposition Modeling (FDM)

  • Filament is melted in a nozzle that moves in the XY direction
  • Molten plastic is extruded from the nozzle and deposited on the build platform in layers
  • Requires support material

Stereolithography (SLA)

  • Laser traces the path of the geometry/pattern that is being produced
  • Resin hardens after laser exposure
  • Build platform descends, and the process repeats

Selective Laser Sintering (SLS)

  • Layer of powder is placed in the fabrication bed
  • High-power laser fuses the powder that it traced
  • Fabrication bed is then lowered, and a new layer of powder is spread

SLS Characteristics

  • Enables full functional prototype production
  • Surface finish is not good as SLA parts
  • Additional surface finish can be applied
  • Glass-filled nylon is resistant to high temperature and chemical environments
  • High shrinkage ratios can result in dimensional inaccuracy
  • Rubber-like parts can be manufactured directly from polymer

Laminated Object Manufacturing (LOM)

  • No specific details mentioned

Electron Beam Melting (EBM)

  • Process wherein parts are formed by melting metal powder layer per layer with an electron beam in a high vacuum
  • Suitable for medical implant market due to the use of titanium alloys
  • Characteristics:
    • No need for extra heat treatment
    • High surface quality
    • Applicable to metals, ceramics, and composites
    • Precise process
    • Minimum layer thickness at 0.05mm
    • Used in medical implants, aerospace, and automotive parts

Selective Laser Sintering (SLS)

  • Low cost due to readily available raw material
  • Relatively large parts can be made, as no chemical reaction is necessary
  • Production of complex parts is difficult
  • There may be a fire problem when the working zone gets too hot
  • No need for additional processing
  • No need for additional support
  • Very easy to use

Laminated Object Manufacturing (LOM)

  • The most common used material is still paper
  • Low cost due to readily available raw material
  • Relatively large parts can be made, as no chemical reaction is necessary
  • Production of complex parts is difficult
  • Fast as laser only traces the contour and does not trace the whole cross section
  • Parts can be used immediately after processing

Electron Beam Melting (EBM)

  • It is a process where parts are formed by melting metal powder layer per layer with an electron beam in a high vacuum
  • Titanium alloys are widely used in this technology, making it suitable for medical implant market
  • High quality vacuum melting enables high material properties
  • No need for extra heat treatment
  • Applicable to metals, ceramics, and composites
  • Precise process
  • Minimum layer thickness at 0.05mm

Stereolithography (SLA)

  • No information provided

Fused Deposition Modeling (FDM)

  • It is a solid-based rapid prototyping method that extrudes material, layer-by-layer, to build a model
  • Support material is required
  • Filament is melted in a nozzle that moves in XY direction
  • Molten plastic is then extruded from the nozzle and deposited on the build platform in layers
  • Used for producing functional prototypes, models, and end-use parts

Additive Manufacturing (AM)

  • Refers to a class of technologies that can automatically construct physical models from Computer-Aided Design (CAD) data
  • In this method, physical models are formed by adding materials layer by layer
  • The first techniques for rapid prototyping became available in the late 1980s
  • Synonymous to 3D printing
  • Applications include sales, metal tooling, polymer patterns, functional prototypes, jigs and fixtures, cosmetic models, end-use parts, education research, and others

Additive Manufacturing vs Machining

  • No information provided

Additive Manufacturing Process

    1. Geometric Modelling
    1. Tessellation of the geometric model
    1. Slicing of the model into thin cross-sectional layers
    1. Constructing the model
    1. Finishing and cleaning

Applications of Additive Manufacturing

  • Art
  • Automotive industry
  • Bioengineering
  • Aerospace applications
  • Fashion
  • Dental applications

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