3D Printing or additive manufacturing is a thechnology that creates physical prototypes of 3D solids from their digital models.
Here are some examples of additive manufacturing products:
How to create the physical products?
Additive manufacturing processes differ depending on the material and machine technology used.
The American Society for Testing and Materials (ASTM) group define seven categories of additive manufacturing processes:
- Vat photopolymerization
- Material Jetting
- Binder Jetting
- Powder BedFusion
- Material Extrusion
- Direct energy deposition
- Sheet lamination
General Additive manufacturing process
The first step is to design the 3D model, this can be done by many methods ( CAD softwares, CT scanning and 3D photography).
The second step is STL conversion done by Computer aided process planning : the main phases are : File repair and preprocess ,model decomposition and so on.
the third step is file transfer to machine ( additive manufacturing machine) ,after that come the machine setup and model building .Finally , come the last step which’s postprocessing : remove supports, improve finish and inspect model.
Weight reduction due to additive manufacturing Benefits
weight reduction is one of AM benefits, let see the example of steel buckle:
steel buckle: 155g comparing with Titanum buckle only 70 g that means 55% of reduction
For an Airbus 380 with all economy seating
(853 seats), a reduction of 72.5 kg
Over the airplane’s lifetime 3.3million
liters of fuel (2 mil. Euro saved)