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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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Sergeant, Peter
Ghent University
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (15/15 displayed)
- 2024Impact of strand deposition and infill strategies on the properties of monolithic copper via material extrusion additive manufacturingcitations
- 2024Production and characterisation of filament-based Material Extrusion (MEX) additively manufactured copper partscitations
- 2023Evaluation of 3D-Printed Magnetic Materials For Additively-Manufactured Electrical Machinescitations
- 2023Process optimization and characterization of dense pure copper parts produced by paste-based 3D micro-extrusioncitations
- 2023Material Engineering of 3D-Printed Silicon Steel Alloys for the Next Generation of Electrical Machines and Sustainable Electromobilitycitations
- 2022Stress-dependent magnetic equivalent circuit for modeling welding effects in electrical steel laminationscitations
- 2020Magnetic properties of silicon steel after plastic deformationcitations
- 2018Synchronous reluctance machine : combined star-Delta Winding and rotor eccentricity
- 2017Performance comparison of conventional synchronous reluctance machines and PM-assisted types with combined star-delta windingcitations
- 2016Influence of stator slot openings on losses and torque in axial flux permanent magnet machinescitations
- 2015Comparison of motor stator teeth built of soft magnetic composite and laminated silicon steel sheets in an axial flux permanent magnet synchronous machinecitations
- 2015Synchronous reluctance motors performance based on different electrical steel gradescitations
- 2014Axial-flux PM machines with variable air gapcitations
- 2012Reducing the permanent magnet content in fractional-slot concentrated-windings permanent magnet synchronous machinescitations
- 2010Comparison of Nonoriented and Grain-Oriented Material in an Axial Flux Permanent-Magnet Machinecitations
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article
Impact of strand deposition and infill strategies on the properties of monolithic copper via material extrusion additive manufacturing
Abstract
The present research presents a comprehensive study on the process optimisation and characterisation of fully dense and pure Cu parts manufactured by Material Extrusion Additive Manufacturing (MEX). This technology is an emerging approach to additively manufacture high-performance metal components due to its multi-step nature that allows to shape and subsequently sinter complex design parts. A commercially available filament with 60 vol% (93 wt%) copper particles and polymeric binders was used and characterised in this study. Two approaches were combined for the first time to maximise the final density of the copper parts; a statistical approach (using ANOVA) and an optimisation approach based on the strand cross-section. Based on the former, the flow rate multiplier during printing has a significant effect on the density of the as-printed parts. The latter aimed at studying the effect of the ratio between extrusion width, layer height, and nozzle diameter on the deposited strand morphology. An extrusion width equal to and a layer height lower than the nozzle diameter contribute to precise strand dimensions, leading to improved control of the final green density. After solvent and thermal debinding followed by pressureless and supportless sintering in pure H2 at 1050 °C, the copper parts resulted in a relative density > 95 % and an electrical conductivity of ∼93 %IACS as an indication of the purity of the starting material and the quality of the whole process chain. Tensile testing of as-sintered dog-bone samples, built with 0°, 90° and ±45° infill patterns and a single wall contour, revealed the best results for the ±45° strategy with an ultimate tensile strength of 164 MPa and an elongation at fracture of 24 %. Finally, a copper coil for electromagnetic applications was manufactured, for the first time, via filament-based MEX and tested. It reported an electrical conductivity competitive to that reported in the literature (∼70 %IACS). This result was discussed in relation to a simple monolithic Cu geometry to provide insight into the complexity and concomitant scientific relevance of applying MEX to functional components.