3D printing (Additive Manufacturing) AUTHOR: MALASHKOV VALENTIN.
3D printing: Engineering Design concepts in additive manufacturing · 3D printing: Engineering...
Transcript of 3D printing: Engineering Design concepts in additive manufacturing · 3D printing: Engineering...
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Mr. Kendy Madisha
Lecturer @ Faculty of Engineering
University of Pretoria
3D printing: Engineering
Design concepts in
additive manufacturing
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Outline
• 3D Printer Technology, Industry & Design
Considerations
• Design Concept Solutions
– International
– Local
– Own Design Concepts in Fine Arts
• Concerns & Opportunities
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World Market share on Printers
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3D Printer Technology Types
• FDM -- Fused Deposition Modeling
• SLA -- Stereolithography
• DLP -- Digital Light Processing
• SLS -- Selective Laser Sintering
• 3DP -- Tridimensional Inkjet Printing
• PJP -- Polyjet printing
• LOM -- Laminated Object Manufacturing
• LENS
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Fused Deposition Modeling
FDM
Operation Pros Cons
Fused deposition
modelling uses a
heated extrusion tip to
melt materials in
filament form
• Accessible materials:
ABS, wax, and elastomer.
• Some water-soluble
supports.
• Cheap
• Slower than SLA and
SLS.
• Requires finishing
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Stereolithography
SLA
Operation Pros Cons
Stereolithography
Apparatus uses laser
to solidify a
photopolymer.
• Speed,
• Accuracy, and
• Good surface finish
• Used in Jewellery
industry
• Limited material
selection & properties,
• Unpleasant raw
material
• Material properties
limiting to light
functional
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Digital Light Processing
DLP
Operation Pros Cons
Similar to
SLA except that DLP
uses a projector light
rather than a laser to
cure photo-sensitive
polymer resin.
• Fast
• Good material choice
• Variety on resins to make
your material.
• Accuracy of 30 microns in
resolution.
• Additional post
processing required.
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Selective Laser Sintering
SLS
Operation Pros Cons
Selective laser sintering
uses a laser to sinter
powder.
• Fast,
• accurate,
• Functional parts not as
brittle as most SLA models.
• Plastic and metal parts are
available
• Additional post
processing required.
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Tridimensional Inkjet Printing
3DP
Operation Pros Cons
Jets a binder onto
starch- and cellulose-
based powders.
• Fastest Printer
• Recently, material
strength Flexible parts
• Different colours.
• Accuracy,
• Surface finish,
• Best suited for concept
models
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Polyjet Printing
PJP (InkJet)
Operation Pros Cons
Similar to conventional
inkjet printing
technology using a
photopolymer. Addition
of an elevator enables
the third axis of printing
• Exceptional speed &
accuracy
• Light finishing
• Limited proprietary
material selection.
• Relatively young
adaptation of RP.
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Laminated Object Manufacturing
LOM
Operation Pros Cons
In laminated object
modelling, sections of
a part are cut from
paper and
automatically glued
together.
• Quick
• Has strength and
properties similar to
wood.
• Accuracy susceptible
to changes in humidity.
• Occasionally intensive
hand finishing required
in removing
unnecessary material.
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LENS
Metal 3D Printers
Operation Pros Cons
LENS metal 3D printers
uses energy from a
High Power Laser to
deposit molten powder
into a selected location
to build or repair parts
layer by layer.
• Print on a wide range of
materials (including
titanium, stainless steel &
other metal alloys)
• Can fabricate, enhance
and repair high-
performance metal
components
• Cost wise highly usable
in high end industries
only (eg, Aerospace,
Defence, Power
Generation)
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Design Concept Solutions (International)
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Design Concept Solutions (Locally)
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My Design Concepts (Bluepile):
Political Chess Set
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Rugby Bokke
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Mandela Old vs Young
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Major Political Heads
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Concerns & Opportunities
• Concerns
– Hype,
– Skilling of majority South African young
people
– Creative Destruction
• Opportunities
– Makerspace participating,
– Digital Design in CAD and Sculpting
– Involvement in design of 3D printer machines
– Creative Design
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