| 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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Anderson, Pd Patrick
Eindhoven University of Technology
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (50/50 displayed)
- 2024Numerical simulation of fiber orientation kinetics and rheology of fiber-filled polymers in uniaxial extensioncitations
- 2024Fiber-induced crystallization in elongational flowscitations
- 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
- 2023Deformation kinetics of single-fiber polypropylene composites
- 2023Shear-Induced Structure Formation in MAH-g-PP Compatibilized Polypropylenescitations
- 2022Laser sintering of PA12 particles studied by in-situ optical, thermal and X-ray characterizationcitations
- 2022Numerical Modeling of the Blend Morphology Evolution in Twin-Screw Extruderscitations
- 2022Constitutive framework for rheologically complex interfaces with an application to elastoviscoplasticitycitations
- 2021Computational interfacial rheologycitations
- 2021Numerical simulations of the polydisperse droplet size distribution of disperse blends in complex flowcitations
- 2020Numerical analysis of the crystallization kinetics in SLScitations
- 2020On the validity of 2D analysis of non-isothermal sintering in SLScitations
- 2020A filament stretching rheometer for in situ X-ray experimentscitations
- 2020Polymer spheres
- 2020Polarization modulated infrared spectroscopycitations
- 2020Transient dynamics of cold-rolled and subsequently thermally rejuvenated atactic-polystyrene using broadband dielectric spectroscopycitations
- 2019Hydrostatic stress as indicator for wear initiation in polymer tribology
- 2019Hydrostatic stress as indicator for wear initiation in polymer tribologycitations
- 2019Effect of low-temperature physical aging on the dynamic transitions of atactic polystyrene in the glassy statecitations
- 2019A novel experimental setup for in-situ optical and X-ray imaging of laser sintering of polymer particlescitations
- 2019A novel experimental setup for in-situ optical and X-ray imaging of laser sintering of polymer particles
- 2019Simulation of bubble growth during the foaming process and mechanics of the solid foamcitations
- 2019Modelling flow induced crystallization of IPPcitations
- 2019Temperature dependent two-body abrasive wear of polycarbonate surfaces
- 2019Temperature dependent two-body abrasive wear of polycarbonate surfacescitations
- 2019Laser sintering of polymer particle pairs studied by in-situ visualization
- 2019Laser sintering of polymer particle pairs studied by in-situ visualizationcitations
- 2018Contact mechanics of high-density polyethylene: Effect of pre-stretch on the frictional response and the onset of wear
- 2018Contact mechanics of high-density polyethylene: Effect of pre-stretch on the frictional response and the onset of wearcitations
- 2018Temperature-dependent sintering of two viscous particlescitations
- 2018Contact mechanics of polyolefins: effect of pre-stretch on the frictional response and the onset of wear
- 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
- 2017Next generation multi-material 3D food printer concept
- 2017Sintering of two viscoelastic particles: a computational approachcitations
- 2016Predicting the fountain flow instability
- 2016Long term performance of fiber-reinforced polymers
- 2014Monocytic cells become less compressible but more deformable upon activationcitations
- 2010Residual stresses in gas-assisted injection moldingcitations
- 2009Scale-down of mixing equipment : microfluidics
- 2009Model development and validation of crystallization behavior in injection molding prototype flowscitations
- 2008Transient interfacial tension of partially miscible polymerscitations
- 2006Viscoelastic effects in multilayer polymer extrusion
- 2006On the streamfunction-vorticity formulation in sliding bi-period frames : application to bulk behavior for polymer blendscitations
- 2006Two component injection molding of phase separating blendscitations
- 2006Application of mortar elements to diffuse-interface methodscitations
- 2003Diffuse interface modeling of the morphology and rheology of immiscible polymer blendscitations
- 2003Diffuse interface modelling of the rheology of immiscible polymer blends
Places of action
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article
Laser sintering of polymer particle pairs studied by in-situ visualization
Abstract
Merging of particle pairs during selective laser sintering (SLS) of polymers is vital in defining the final part properties. Depending on the sintering conditions, polymers can undergo full or partial sintering whereby incomplete sintering results in poor mechanical properties. At present, the underlying mechanisms and related conditions leading to various consolidation phenomena of polymer particles are not well understood. In the present work, a novel in-house developed experimental setup is used to perform laser sintering experiments on polystyrene (PS) particle doublets while performing in situ visualization of the sintering dynamics. From the recorded images, the evolution of the growth of the neck radius formed between both particles is analyzed as a function of time. Sintering conditions such as heating chamber temperature, laser pulse energy and duration, laser spot size and particle size are precisely controlled and systematically varied. A non-isothermal viscous sintering model is developed that allows qualitative prediction of the observed effects of the various parameters. It is shown that the sintering kinetics is determined by a complex interplay between the transient rheology caused by the finite relaxation times of the polymer and the time-dependent temperature profile which also affects the polymer viscosity. The combination of a full material characterization with sintering experiments under well-defined conditions has resulted in a general understanding of the effects of material and process parameters on laser sintering. Thereby a strong foundation is laid for the route towards rational design of laser sintering.