Departamento de Ingeniería Mecánica y Minera
URI permanente para esta comunidadhttps://hdl.handle.net/10953/41
En esta Comunidad se recogen los documentos generados por el Departamento de Ingeniería Mecánica y Minera y que cumplen los requisitos de Copyright para su difusión en acceso abierto.
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Examinando Departamento de Ingeniería Mecánica y Minera por Materia "3D printing"
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Ítem Facing the challenges of the food industry: Might additive manufacturing be the answer?(SAGE, 2019-06) Sartal, Antonio; Carou, Diego; Dorado Vicente, Rubén; Mandayo, LorenzoOur research explores how additive manufacturing can support the food industry in facing its current global challenges. Although information technologies are usually highlighted as the main driver of the Industry 4.0 concept, which was first introduced during the Hannover Fair event in 2011, we posit that additive manufacturing can be the true generator of a sustainable competitive advantage in this sector. This evidence stems from a case study in a plant of one of the world’s largest fishing multinational companies. Our results show how, through robotic claw optimization using three dimensional printing, we not only reduce the manufacturing costs but also increase the flexibility of the line and reduce time to market. On the one hand, our findings should encourage managers to test this technology at their facilities; on the other hand, policymakers should promote the adoption of additive manufacturing, highlighting the potential of this technology within the Industry 4.0 context.Ítem Procedure to Improve the Surface Fidelity of Additive Manufactured Parts via Direct Slicing Tessellation(Elsevier, 2024-05-15) Robles Lorite, Laura; Dorado Vicente, Rubén; García Collado, Alberto; Torres Jiménez, EloísaPart appearance issues due to dimensional and shape inaccuracies (fidelity) hinder the use of additive manufacturing processes to obtain final products. Inaccuracies come from process parameter definition, post-processing operations, and the slicing process. Regarding the slicing procedure, the conventional approach is the indirect slicing of a tessellation that approximates the part model. Layer computation is straightforward in this method but introduces dimensional deviations for curvilinear surfaces. Direct slicing minimizes these deviations, but computation and layer representation are complex. This work blends both solutions, explaining how to build an improved tessellation from direct slices that can be introduced and processed in usual slicing programs. Two shapes , a simple hemisphere and a component of a retail product (a hair dryer nozzle), were printed by Fused Filament Fabrication (FFF), using conventional indirect slicing with different tessellation’s resolutions and the proposed Direct Slicing Tessellation (DST). The resulting samples were measured using a 3D scanner. Compared with a reference sample printed from a Computer-Aided Design (CAD) model discretized with a tolerance < 6 um, maximum deviations were found on more areas of conventional indirect samples and with higher values (from 0.13 to 0.16 mm) than in the case of the DST samples (with maximum deviation of 0.1 mm at few points on the surface). Additionally, DST files are around ten times smaller than reference files. Finally, the deviation between the CAD model and the representation on the resulting surfaces of zebra stripes and mean curvature show that the proposed solution enhances the printed surface fidelity compared to the conventional indirect slicing.