1. KNOWLEDGE INSTITUTE OF TECHNOLOGY
DEPARTMENT OF MECHANICAL ENGINEERING
ME8712 – TECHNICAL SEMINAR
3 – D PRINTING AS A CONSTRUCTION TECHNIQUE
SI.no: Year - Sec Register number Name
01 IV -A 611219114024 R. KISHORE RAVI
02 IV –A 611219114047 N.S. SANTHOSH
03 IV –A 611219114057 SA. SURIYAA
04 IV -A 611219114058 G. SURYAPRAKASH
Team members:
21-01-2023 1
2. OVERVIEW OF PRESENTATION
• What is 3-D printing ?
• Workflow
• Methods of 3-D printing
• Fused Deposition Modelling (FDM)
• Selective Laser Sintering(SLS)
• India's first 3D printed house
• Advantage’s
• Disadvantage’s
• Conclusion
B.E-MECH: IV Year/ VII Sem 2
1/21/2023
3. What is 3-D printing?
• 3-D printer is a technique that deposits material layer by layer
using a head similar to that of an inkjet printer.
• The head tends to move along x and y axes and the object
being printed moves up and down on the z axis.
• It is the process whereby the information in a digital file
describing an object virtually (such as STL or CAD file) is used
to rapidly make a real object, usually by one single machine
and usually in limited production runs.
B.E-MECH: IV Year/ VII Sem 3
1/21/2023
4. Workflow
Pre-process
B.E-MECH: IV Year/ VII Sem 4
1/21/2023
CAD, STL 3D models
Specialized
software
3D printer
Powder removal Heating / curing Metal infiltration
Process
Post-process
5. Methods of 3-D printing
• Fused Deposition Modelling (FDM).
• Selective Laser Sintering(SLS).
B.E-MECH: IV Year/ VII Sem 5
1/21/2023
6. Fused Deposition Modelling (FDM)
• An FDM 3D printer works by depositing melted filament material
over a build platform layer by layer until you have a completed part.
• FDM uses digital design files that are uploaded to the machine itself
and translates them into physical dimensions.
• Materials for FDM include polymers such as ABS, PLA, PETG and PEI,
which the machine feeds as threads through a heated nozzle.
• To operate an FDM machine, you first load a spool of this
thermoplastic filament into the printer. Once the nozzle hits the
desired temperature, the printer feeds the filament through an
extrusion head and nozzle.
• This extrusion head is attached to a three-axis system that allows it
to move across the X, Y and Z axes. The printer extrudes melted
material in thin strands and deposits them layer by layer along a
path determined by the design.
B.E-MECH: IV Year/ VII Sem 6
1/21/2023
7. Selective Laser Sintering(SLS)
• SLS 3D printing uses a high-power laser to sinter small
particles of polymer powder into a solid structure based on a
3D model.
• Printing: The powder is dispersed in a thin layer on top of a
platform inside of the build chamber.
B.E-MECH: IV Year/ VII Sem 7
1/21/2023
8. India's first 3D printed house
• India's first 3D printed house in Chennai.
• Tvasta's first structure is a single-storey house, a 600-sq ft. unit,
created in collaboration with Habitat for Humanity's Terwilliger
Center for Innovation in Shelter at the IIT-Madras campus.
• The house was built in just five days.
B.E-MECH: IV Year/ VII Sem 8
1/21/2023
9. 3-D printing in construction Advantage’s:
• Faster Speed of Construction
• Low waste construction
• Reduced health and safety hazards
• Increased accuracy
• High level of design freedom
• Tailored Constructions
• Cost Effective
B.E-MECH: IV Year/ VII Sem 9
1/21/2023
10. 3-D printing in construction Disadvantage’s:
• Limited Materials
• Restricted Build Size
• Reduction in Manufacturing Jobs
• Copyright Issues
• High Energy Consumption
B.E-MECH: IV Year/ VII Sem 10
1/21/2023
11. Conclusion
• 3D printing, like modeling or three dimensional scanning, is a
creation tool among other things, but what most distinguishes
it is its potential to create an almost unlimited number of
shapes.
• We can say it is a revolution in the world of civil engineering.
• Being eco-friendly it provides good quality of work at low
construction cost.
• Allows creating buildings of complicated shapes.
B.E-MECH: IV Year/ VII Sem 11
1/21/2023
