NDLI: 3D-printing of thermoplastic structures by FDM using heterogeneous infill and multi-materials: An integrated design-advanced manufacturing approach for factories of the future

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3D-printing of thermoplastic structures by FDM using heterogeneous infill and multi-materials: An integrated design-advanced manufacturing approach for factories of the future

Content Provider	Semantic Scholar
Author	Roger, Frederic Krawczak, Patricia
Copyright Year	2015
Abstract	Factories of the Future (FoF) are expected to implement new integrated design-manufacturing approaches to go towards so-called 'advanced manufacturing'. Actually, combination of additive manufacturing (AM, or 3D-printing) and topological optimization offer new opportunities to produce lighter products with lower environmental footprint. Fused Deposition Modeling (FDM) is a widely used AM process which is affordable with a free control of process parameters. This paper aims at improving the design of 3D-printed structures using topological optimization to define the external geometry and then either heterogeneous internal filling or multimaterials to achieve targeted usage properties. 22 ème Congrès Français de Mécanique Lyon, 24 au 28 Août 2015 2 Based on structural mechanics simulation, parts of the structures where stresses field is high are printed with high density internal filling, or alternatively a new material with improved mechanical properties is added. In the present case study, two thermoplastic materials are combined: virgin ABS and conductive ABS (filled with carbon black). In the proposed optimization approach, the conductive polymer can be replaced with another polymer system (e.g. polymer reinforced with fillers, short fibers or nanoparticles) to increase the stiffness. While the optimal inner and outer designs are defined, another challenge is to identify the best manufacturing parameters. During 3D-printing of variable densities filled parts or multimaterials parts, weak interfaces are created, whose mechanical strength is strongly linked to the printing patterns. This particular issue is also addressed in the paper.
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://documents.irevues.inist.fr/bitstream/handle/2042/57298/70780.pdf?sequence=1
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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