3D Printing Education

  Directed Energy Deposition Illustration  DIRECTED ENERGY DEPOSITION (DED) It is an additive manufacturing method, in which simultaneous material deposition and energy source is present. The material in the form of either powder or wire is feed through nozzle or feeding mechanism and the focused energy source melts material to get deposit and fused with the existing structure. The focused energy source can be plasma arc, laser beam or electron beam as well. Based on the type of application DED processes can also be called by different other names such as below; 1. Laser Engineered Net Shaping (LENS)  2. Direct Metal Deposition (DMD)  3. Electron Beam Additive Manufacturing (EBAM)  4. Directed Light Fabrication  5. Laser Cladding Directed energy deposition (DED) is a 3D printing technology used to build up parts by adding material layer-by-layer. It is typically used for larger parts or for repairing existing objects. DED systems use a range of different en...

  Ref: https://commons.wikimedia.org/wiki/File:Laminated_object_manufacturing.png SHEET LAMINATION  As the name indicates, in this process 3D shape is built by using the layer of sheets being placed over each other. The nature of this process requires continuous cutting of each layer and some sort of joining mechanisms between two lapped sheets. To assist the cutting process either a laser or mechanical knife is used. To perform the joining mechanism between sheets either an adhesive is used or welding basics are utilized. As shown in the figure, 1 and 8 are rollers assisting movement of sheets. 2 is mechanism to assist adhesive. 3 is laser assisting the cutting process. 4 and 5 are the laser source and manipulation mechanism. 6 is the desired 3D shape. 7 is the build platform. SHEET LAMINATION is further categorized into various options. Laminated Object Manufacturing (LOM)  Selective Lamination Composite Object Manufacturing (SLCOM)  Computer-Aided Manufa...

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