1.What Is Additive Manufacturing JIAO TO ONG UN Additive manufacturing (AM)is a technology that allows physical components to be made from virtual three-dimensional (3D) computer models by building the component layer-by-layer until the part is complete. 1940s 1870s 17605 Atomic energy Additive space manufacturing technology& ?? Electricity Computer power engineering Steam and oil engine MT333 Materials Applications Practice Prof.XiaoQi Chen B.3 AM:Process Steps O TONG UN Design in CAD Convert to STL Slice file Print layer upon layer STL-file CAD model STL model An STL(STereoLithography)file describes a raw unstructured triangulated surface by the unit normal and vertices (ordered by the right-hand rule)of the triangles using a three-dimensional Cartesian coordinate system.Two concentric circles, representing a CAD model of a doughnut shape,and a series of triangles approximating the doughnut, representing how STL modeling works. MT333 Materials Applications Practice Prof.XiaoQi Chen B.4MT333 Materials Applications B.3 & Practice Prof. XiaoQi Chen 1760s 1870s 1940s Steam engine Electricity power and oil Atomic energy space technology& Computer engineering Additive manufacturing ？？ Future 1. What Is Additive Manufacturing Additive manufacturing (AM) is a technology that allows physical components to be made from virtual three-dimensional (3D) computer models by building the component layer-by-layer until the part is complete. MT333 Materials Applications B.4 & Practice Prof. XiaoQi Chen AM: Process Steps An STL (STereoLithography) file describes a raw unstructured triangulated surface by the unit normal and vertices (ordered by the right-hand rule) of the triangles using a three-dimensional Cartesian coordinate system. Two concentric circles, representing a CAD model of a doughnut shape, and a series of triangles approximating the doughnut, representing how STL modeling works