PRESENTED BY

B.VINEETHA

3-D PRINTING

Outline

Introduction.History.What is 3-d printing??The basic idea.How it work??Different method of 3-d Printing.Print head.Advantages.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 prototyping. Additive manufacturing.

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!

General Principles

Modeling.Printing.Finishing.

How 3D Printing Work

Different Methods

• Stereo lithography.• Selective laser sintering (SLS).• Fused deposition modeling (FDM).• Ink-Jet 3D printing.

Print Head

Industrial inkjet printing essentially means using inkjet technology as a printing or deposition process in manufacturing or on production lines.

There are 2-types of print head for the generation of liquid drops.

Drop-On-Demand (DOD)Continuous-Jet (CJ)

Drop-On-Demand (DOD)

Drop on Demand (DOD) is a broad classification of inkjet printing technology where drops are ejected from the print head only when required.

The drops are formed by the creation of a pressure pulse within the print head.

Continuous-Jet (CJ)

A pump directs fluid from a reservoir to one or more small nozzles, which eject a continuous stream of drops at high frequency (in the range of roughly 50 kHz to 175 kHz) using a vibrating piezoelectric crystal.

Advantages

Print movable parts.Print items in remote locations.Ability to send items over internet and print out at home.Plastic used is strong.

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

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

[1]Wikihow available at: https://m.wikihow.com

[2] Lisa Harouni 3D printing entrepreneur available at:https://www.ted.com/talks/lisa_harouni_a_primer_on_3d_printing

[3] Avi Reichental what next in 3d printing available at: https://www.ted.com/talks/avi_reichental_what_s_next_in_3d_printing

[4] Bastian Schaefer a 3d printed jumbo jet available at:http://www.ted.com/talks/bastian_schaefer_a_3d_printed_jumbo_jet?language=en

[5]Anthony atala printing a human kidney available at:https://www.ted.com/talks/anthony_atala_printing_a_human_kidney

Questions..??