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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Alves, Jl
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (19/19 displayed)
- 2024Artificial reefs through additive manufacturing: a review of their design, purposes and fabrication process for marine restoration and managementcitations
- 2023Potential Use of Sugarcane Bagasse Ash in Cementitious Mortars for 3D Printingcitations
- 2023Analysis of Lattices Based on TPMS for Bone Scaffold
- 20224D structures for the short-time building of emergency shelterscitations
- 2022Design and validation of an innovative 3D printer containing a co-rotating twin screw extrusion unitcitations
- 2022A bio-inspired remodelling algorithm combined with a natural neighbour meshless method to obtain optimized functionally graded materialscitations
- 2021Development of 3D printing sustainable mortars based on a bibliometric analysiscitations
- 2021The influence of infill density gradient on the mechanical properties of PLA optimized structures by additive manufacturingcitations
- 2021Effect of 3D printer enabled surface morphology and composition on coral growth in artificial reefscitations
- 2021Using a radial point interpolation meshless method and the finite element method for application of a bio-inspired remodelling algorithm in the design of optimized bone scaffoldcitations
- 2020Influence of multiple scan fields on the processing of 316L stainless steel using laser powder bed fusioncitations
- 2020Machinability of PA12 and short fibre-reinforced PA12 materials produced by fused filament fabricationcitations
- 2019Study of the influence of sintering temperature on water absorption in the manufacture of porcelain cupscitations
- 2017Effect of the chemical milling process on the surface of titanium aluminide castings
- 2017Study of the viability of manufacturing ceramic moulds by additive manufacturing for rapid castingcitations
- 2017Experimental characterization of ceramic shells for investment casting of reactive alloyscitations
- 2017Reinforcement of a biopolymer matrix by lignocellulosic agro-wastecitations
- 2017The influence of face coat material on reactivity and fluidity of the Ti6Al4V and TiAl alloys during investment castingcitations
- 2015DEVELOPMENT OF A PROJECT AND MANUFACTURE METHODOLOGY FOR TITANIUM ALLOYS JOINT PROSTHESES
Places of action
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article
Machinability of PA12 and short fibre-reinforced PA12 materials produced by fused filament fabrication
Abstract
Fused filament fabrication (FFF) is an extrusion-based process that allows quick and inexpensive part production, practically without any geometric limitations, offering flexibility, promoting reduction in costs and lead-time in an industrial scenario. Being one of the most widespread additive manufacturing techniques, the process has evolved introducing new and advanced materials (e.g. high-performance polymers and composites). Despite its advantages, the process is vastly overlooked due to its high level of anisotropy, poor surface roughness and lack of geometric accuracy caused by the layer thickness. To reduce this effect, a sequence of laborious manual operations can be performed, which may result in time-consuming and inaccurate results. Therefore, efforts have been made towards the development of hybrid manufacturing technologies by combining FFF process and subtractive equipment, aiming to solve these limitations. In this work, two complementary methodologies analysing the behaviour of FFF PA12 and short fibre-reinforced PA12 printed parts when subjected to a subtractive approach are presented. The first experimental plan took into account the final surface roughness (Ra and Rz) via full factorial design of experiments (DOE) and analysis of variance (ANOVA) considering the influence of distinct printing orientations, two types of cutting tools and machining parameters such as, cutting speed, feed and cutting depth. An analysis on tool wear and SEM microscopy to the machined surface was also performed. The second approach was carried out via Taguchi and ANOVA, considering the first experimental approach results. Thus, milling parameters were the focus, evaluating the final material surface roughness, being now monitored the cutting forces and tool wear analysis in order to understand their influence on the final results. It is shown that it is possible to machine PA12-based FFF printed parts without any major problems such as layer delamination. A decrease in Ra, t of 1931% to 0.99 mu m for PA12CF and 2255% for PA12 to 0.96 mu m was achieved, proving the overall machinability of the materials. It was found that PA12 creates higher levels of cutting loads and increased tool wear, thus indicating that short fibre presence improves the material machinability, while parameters such as building orientation do not possess any influence on the final surface roughness.