Selective laser sintering

Acknowledgement The completion of this seminar wouldn't be possible without the participation and help of so many people whose names might not enumerated. Their contributions are sincerely appreciated and gratefully acknowledged. but I’d like to express my sincere gratitude to my guide prof. Mayur Makhesana sir And coordinator prof. Keyur Hirapara sir. To all friends and other who in one or another shared their support , either morally, or physically, Thank you. Harshad Vekariya

3. What is 3D printing? 3 D printing also known as additive manufacturing or stereolithography or rapid prototyping has been predominantly explored for the past few years. 3D printing technology is called additive manufacturing because the material is built from scratch, without any loss in existing volume of an object by chipping, drilling or cutting. (Tony Hoffman, 2016). The fundamental concept of additive manufacturing is printing an object by successive deposition of layers of various materials

Background: One of the most innovative inventions of the 19th century was the invention of the automobile. It is clear that the automobile industry has changed the way people and goods travel. The industry basely existed until a man named Henry Ford made the automobile accessible to the public. He put into full motion what we now know today as the automobile industry. Henry Ford had both changed the automobile industry, as well as the manufacturing industry. Ford did this with the way he used the

Power of Personal Production Imagine that you could design a three-dimensional object as quickly as it would take to decide on material and computer design: this idea is what created the technology of 3D printing. From the conception of 3D printing in 1984, to the first stem cell transplant, 3D printing has evolved from a sci-fi like idea to a realistic addition in individual consumer lifestyles. Now instead of relying on large manufactures to produce a special or specific good, the consumer has

As previously defined, a composite material consists of two or more materials where polymers are used as matrix materials usually. These materials behave together to produce the best properties of the scaffold, duplicating the same composite features of bone. In particular, polymer- based composite scaffolds may mimic the structure of natural bone which is mainly made of HA and collagen. Showing better osteoconductivity, HA can be considered the inorganic reinforcing phase of the composite scaffold

effective activity. As discussed in introduction about types of 3-D printers and variety of industries where they can be used, explanations regarding these aspects are as follows: i. STEREO LITHOGRAPHY (SLA) ii. FUSED DEPOSITION MODELLING iii. SELECTIVE LASER SINTERING (SLS) iv. MULTI-JET MODELLING (MJM) v. VFLASH PRINTER vi. FUSED FILAMENT FABRICATION (FFF) OR FUSED DEPOSTION MODELLING (FDM) Fundamentals of all types of printers stated above are same. As prototypes are printed layer by layer, so certain

provides essential energy for stimulating and maintaining photo-polymerization reaction in which smaller molecules bond and form cross-linking polymer molecular chains. The energy source of photo-polymerization reaction can be a laser beam or mask projection patterns. The laser beam moving trajectories or mask projection

used are Selective Laser Sintering (SLS), Thermal Inkjet Printing (TIJ) and Fused Deposition Modeling (FDM). The type of 3D printer chosen often depends on the materials to be used and how the layers in the finished product are bonded. Selective Laser Sintering (SLS): An SLS printer uses powdered material for printing new objects. A laser draws the object in the powder, and fuses it together. A new layer of powder is put down and the process is repeated until the object is finished. Laser sintering

The process stays the same, though. 3D scanning works by running a laser over the entire surface of the object you want to scan. As the laser moves over the object, a “point cloud” is created: millions of dots on a computer screen that fit together to create a 3D image. This process is extremely quick; the scanner can generate about 750,000 dots per second

3D printing or additive manufacturing is a process of making three dimensional solid objects from a digital file. The creation of a 3D printed object is achieved using additive processes. In an additive process an object is created by laying down successive layers of material until the entire object is created. Each of these layers can be seen as a thinly sliced horizontal cross- section of the eventual object. It all starts with making a virtual design of the object you want to create