| People | Locations | Statistics |
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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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Cardinaels, Ruth M.
KU Leuven
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (19/19 displayed)
- 2024Numerical simulation of fiber orientation kinetics and rheology of fiber-filled polymers in uniaxial extensioncitations
- 2024In situ experimental investigation of fiber orientation kinetics during uniaxial extensional flow of polymer compositescitations
- 2024A monolithic numerical model to predict the EMI shielding performance of lossy dielectric polymer nanocomposite shields in a rectangular waveguidecitations
- 2023A generalized mechano-statistical transient network model for unravelling the network topology and elasticity of hydrophobically associating multiblock copolymers in aqueous solutionscitations
- 2023Melt-Extruded Thermoplastic Liquid Crystal Elastomer Rotating Fiber Actuatorscitations
- 2023Melt-Extruded Thermoplastic Liquid Crystal Elastomer Rotating Fiber Actuatorscitations
- 2023Photoswitchable Liquid-to-Solid Transition of Azobenzene-Decorated Polysiloxanescitations
- 2022Laser sintering of PA12 particles studied by in-situ optical, thermal and X-ray characterizationcitations
- 2021Bio‐Based Poly(3‑hydroxybutyrate)/Thermoplastic Starch Composites as a Host Matrix for Biochar Fillerscitations
- 2020A filament stretching rheometer for in situ X-ray experimentscitations
- 2020Optimization of Anti-kinking Designs for Vascular Grafts Based on Supramolecular Materialscitations
- 2020Optimization of Anti-kinking Designs for Vascular Grafts Based on Supramolecular Materialscitations
- 2020Polymer spheres
- 2019A novel experimental setup for in-situ optical and X-ray imaging of laser sintering of polymer particlescitations
- 2019Laser sintering of polymer particle pairs studied by in-situ visualizationcitations
- 2018Thin film mechanical characterization of UV-curing acrylate systemscitations
- 2018Designing multi-layer polymeric nanocomposites for EM shielding in the X-bandcitations
- 2017Future nanocomposites : exploring multifunctional multi-layered architectures
- 2017Experimental setup for in situ visualization studies of laser sintering of polymer particles
Places of action
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conferencepaper
Experimental setup for in situ visualization studies of laser sintering of polymer particles
Abstract
Products manufactured by Selective Laser Sintering suffer from low mechanical stability and reproducibility [1]. This is mainly caused by an incomplete sintering of the polymer particles, resulting in significant remaining porosity after sintering, as well as limited interlayer adhesion. Hence, more insight in the effects of the different processing conditions and material characteristics on the final product morphology is required. Therefore it is important to understand the sintering of the particles during the process and to utilize this knowledge in material processing. The sintering of two polymer particles has been studied in literature by hot stage microscopy [2], but this technique does not simulate the conditions in an SLS machine. Therefore a dedicated experimental setup, which incorporates the main features of a 3D SLS printing device and at the same time allows in-situ visualization of the sintering dynamics by means of optical microscopy and/or X-rays is developed. A visible light laser is used to achieve good spatial resolution and control over the supplied energy. Energy absorption of the polymers containing colored dye was quantified by means of UV-VIS spectroscopy. Initial thermal characterization by DSC and TGA enabled us to define the stable sintering region for the particles. Subsequently, experiments were conducted using pairs of polymer particles inside a temperature controlled chamber. The polymer particles were subjected to a known amount of laser energy with the ultimate objective to study the sintering dynamics, which is a crucial stage in SLS. The dynamics of the growth of the neck between both particles is compared to available models for sintering kinetics of molten polymers. References: [1] Zarringhalam, Hadi, et al. Materials Science and Engineering: A 435 (2006): 172-180. [2] Berretta et al. Journal of Material Science: 51.10 (2016): 4778 - 4794. S19-239