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Additive manufacturing is a collection of manufacturing processes, each of which builds a part additively based on a digital solid model. The solid model-to-additive manufacturing interface and material deposition are entirely computer-controlled. The traditional additive manufacturing applications have been used for low production runs of parts with complex shapes and geometric features. Additive manufacturing is also used for topology optimization and it impacts the process and supply chain. This article discusses processes, including vat photopolymerization, material jetting, powder bed fusion, directed energy deposition, material extrusion, binder jetting, and sheet lamination.

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David L. Bourell, Terry Wohlers, Introduction to Additive Manufacturing, Additive Manufacturing Processes, Vol 24, ASM Handbook, Edited By David L. Bourell, William Frazier, Howard Kuhn, Mohsen Seifi, ASM International, 2020, p 3–10,

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