Post on 26-Jul-2015
Md. Rakibul Islam
Presented by
Team
Constant
3-D Printing
Rakibul
OUTLINE Introduction History What is 3-d printing ?? General principal How it work?? Different method of 3-d Printing Advantage Disadvantage Conclusion References
INTRODUCTION
3D printing is a modern technology in which 3 dimensional objects are printed from digital data
Three dimensional object is created by laying down successive layers of material
HISTORY
The technology for printing physical 3D objects from digital data was first developed by Chuck Hull in 1984. He named the technique as Stereo lithography and obtained a patent for the technique in 1986
WHAT IS 3D PRINTING?3D printing is a form of additive manufacturing in which components are fabricated in an additive fashion by adding successive layers of material together
It is also known as:Rapid prototypingAdditive manufacturing
THE BASIC IDEA
THE BASIC IDEA If you can slice an object You can glue the slices back together 3D printing builds 3D objects layer by
layer 100-200 layers per inch And it is slow--a Lego block can take an
hour to make But it’s getting better—rapidly!
ADDITIVE MANUFACTURING:
The term additive manufacturing refers to technologies that create objects through a sequential layering process. Objects that are manufactured additively can be used anywhere throughout the product life cycle
GENERAL PRINCIPLES
• Modeling• Printing• Finishing
MODELING Additive manufacturing takes virtual
blueprints from computer aided design (CAD) or animation modeling software and "slices" them into digital cross-sections for the machine to successively use as a guideline for printing.
PRINTING To perform a print, the machine reads
the design and lays down successive layers of liquid, powder, or sheet material to build the model from a series of cross sections. These layers, which correspond to the virtual cross sections from the CAD model, are joined together or automatically fused to create the final shape. The primary advantage of this technique is its ability to create almost any shape or geometric feature.
FINISHING Though the printer-produced resolution
is sufficient for many applications, printing a slightly oversized version of the desired object in standard resolution, and then removing material with a higher-resolution subtractive process can achieve a higher-resolution
HOW 3D PRINTING WORK
A person creates a 3D image of an item using a computer-
aided design (CAD)
software program.
The CAD informat
ion is sent to
the printer.
The printer forms the item by depositing the material in layers—starting from the bottom
layer—onto a platform. In
some cases light or lasers are
used to harden the material.
DIFFERENT METHODS• Stereo lithography• Selective laser sintering (SLS)• Fused deposition modeling (FDM)• Ink-Jet 3D printing
STEREOLITHOGRAPHY Stereolithography is a process for
creating three-dimensional objects using a computer-controlled laser to build the required structure, layer by layer. It does this by using a resin known as liquid photopolymer that hardens when in contact with the air
SELECTIVE LASER SINTERING Selective laser sintering (SLS) is an additive
manufacturing technique that uses a high power laser to fuse small particles of plastic, metal (direct metal laser sintering),ceramic or glass powders into a mass that has a desired 3-dimensional shape
FUSED DEPOSITION MODELING (FDM)• Commonly used for modeling,
prototyping, and production applications.
• Here a hot thermoplastic is extruded from a temperature-controlled print head to produce fairly robust objects to a high degree of accuracy.
INK-JET 3D PRINTING It creates the model one layer at a time
by spreading a layer of powder and inkjet printing binder in the cross-section of the part.
It is the most widely used 3-D Printing technology these days
VALUE PROPOSITIONS OF 3D PRINTING Fabrication on demand Shorter product development time due
to rapid prototyping Less reliance on logistics
Mass customization Caters to each individual’s wants and
needs instead of mass production and consumption
ADVANTAGES
print movable parts print items in remote locations ability to send items over internet and
print out at home plastic used is strong
DISADVANTAGES no regulations on what can be made
example weapons kids could print out dangerous items provide advantages for criminals counterfeiting expensive
MOST INTERESTING EXAMPLE FOR OUR REAL LIFE WHICH IS MADE BY 3D PRINTING
FASHIONABLE PLASTER This 3D-printed cast to
help repair broken bones may be the future of medical orthopedic casts. 3D-printed casts also bring out the positive potential of this emerging technology
ARTIFICIAL ARMS FOR DISABLED
Richard Van As, a South African carpenter, assembles a Robohand and fits it to Liam Dippenaar. Liam was born without fingers on his right hand. Makerbot provided them with the 3D printing technology that they used to print the parts for the Robohand.
BIONIC EAR Scientists, including an
Indian-origin researcher, have created a 3D-printed bionic ear that can "hear" radio frequencies far beyond the range of normal human capability. Using off-the-shelf printing tools, the scientists at Princeton University explored 3D printing of cells and nano particles, creating the bionic ear.
GROW YOUR OWN ORGANS
Surgeon Dr. Anthony Atala demonstrated during TED an early-stage experiment that could someday solve the organ-donor problem: a 3D printer that uses living cells to print out a transplantable kidney
POTENTIAL NEW BUSINESSES
Printing shops Printing Leasing 3-d Printing solutions
for self service Online printing
services
CONCLUSION Nothing communicates ideas faster than
a three-dimensional part or model. With a 3D printer you can bring CAD files and design ideas to life – right from your desktop. Test form, fit and function – and as many design variations as you like – with functional parts
REFERENCES
Google You tube Wikipedia
QUESTIONS..??
Rakibul