1.2 Desarrollos de la fabricación aditiva

The scope of this section will be limited to historical facts of each of the seven AM processes, defined by ISO/ASTM 52900 [15], comprising of Vat Photopolymerization using liquid photopolymer in a vat that is selectively cured by a light-activated polymerization process; Powder Bed Fusion that uses thermal energy to selectively fuse regions of a powder bed; Directed Energy Deposition in which focused thermal energy is used to fuse materials by melting as they are being deposired; Material Jetting where droplets of feedstock material are selectively deposited; Material Extrusion where material is selectively dispensed through a nozzle layer-by-layer; Sheet Lamination in which sheets of material are bonded to form a part; and Binder Jetting in which a liquid bonding agent is selectively deposited to join powder materials. The following sections provide a historical narrative on the development of the seven AM processes focusing on the invention and commercialization. The other elements of AM processes including design, modelling, materials and standards, policy and protocol are found in the subsequent chapters of this book.