@inproceedings{64658, author = {{Neukötter, Moritz and Jesinghausen, Steffen and Schmid, Hans-Joachim}}, location = {{Hamburg}}, title = {{{Die Möglichkeiten der Filament Extension Atomization }}}, year = {{2025}}, } @inproceedings{64659, author = {{Neukötter, Moritz and Jesinghausen, Steffen and Schmid, Hans-Joachim}}, location = {{Berlin}}, title = {{{Flow around Particles in Uniaxially Elongated Capillary Bridges}}}, year = {{2025}}, } @misc{61346, author = {{El Gabbouhi, Abderazzak and Massopo, Orlando and Jesinghausen, Steffen and Schmid, Hans-Joachim}}, title = {{{Untersuchung des Einflusses der Zusammensetzung von Lösungsmitteln und Gasen bei der Herstellung nanoskaliger Eisenoxide mittels Sprühflammensynthese}}}, year = {{2025}}, } @inproceedings{64660, author = {{Neukötter, Moritz and Jesinghausen, Steffen and Schmid, Hans-Joachim}}, location = {{Nürnberg}}, title = {{{Polymer Suspensions under Uniaxial Extension – A novel Way to Produce Core-Shell-Particles? }}}, year = {{2025}}, } @inproceedings{56958, author = {{Neukötter, Moritz and Jesinghausen, Steffen and Schmid, Hans-Joachim}}, location = {{Leeds}}, title = {{{Particle-induced Instabilities in Uniaxially Elongated Thermoplastic Polymer Blends }}}, year = {{2024}}, } @misc{61345, author = {{Zink, Timm Florian and Massopo, Orlando and Jesinghausen, Steffen and Schmid, Hans-Joachim}}, title = {{{Untersuchung des Lösungsmitteleinflusses auf die Synthese von Manganoxid-Nanopartikeln in der Flammenspraypyrolyse}}}, year = {{2024}}, } @misc{61347, author = {{El Gabbouhi, Abderazzak and Massopo, Orlando and Jesinghausen, Steffen and Schmid, Hans-Joachim}}, title = {{{Einfluss der Zerstäubungsparameter auf die Partikelbildung und die Eigenschaften der Endproduktpulver (Studienarbeit)}}}, year = {{2024}}, } @article{36983, abstract = {{AbstractThe use of structured measuring systems to prevent wall slip is a common approach to obtain absolute rheological values. Typically, only the minimum distance between the measuring surfaces is used for further calculation, implying that no flow occurs between the structural elements. But this assumption is misleading, and a gap correction is necessary. To determine the radius correction $$\Delta r$$ Δ r for specific geometries, we conducted investigations on three Newtonian fluids (two silicon oils and one suspension considered to be Newtonian in the relevant shear rate range). The results show that $$\Delta r$$ Δ r is not only shear- and material-independent, but geometry-dependent, providing a Newtonian flow behaviour in a similar viscosity range. Therefore, a correction value can be determined with only minute deviations in different Newtonian fluids. As the conducted laboratory measurements are very time-consuming and expensive, a CFD-approach with only very small deviations was additionally developed and compared for validation purposes. Therefore, simulation is an effective and resource-efficient alternative to the presented laboratory measurements to determine $$\Delta r$$ Δ r for the correction of structured coaxial geometries even for non-Newtonian fluids in the future.}}, author = {{Josch, Sebastian and Jesinghausen, Steffen and Dechert, Christopher and Schmid, Hans-Joachim}}, issn = {{0035-4511}}, journal = {{Rheologica Acta}}, keywords = {{rheology, rheometry, suspension, coaxial, correction}}, publisher = {{Springer Science and Business Media LLC}}, title = {{{Experimental and simulative determination and correction of the effective gap extension in structured coaxial measuring systems}}}, doi = {{10.1007/s00397-023-01383-2}}, year = {{2023}}, } @article{43034, abstract = {{Abstract The accessibility to rheological parameters for concrete is becoming more and more relevant. This is mainly related to the constantly emerging challenges, such as not only the development of high-strength concretes is progressing very fast but also the simulation of the flow behaviour is of high importance. The main problem, however, is that the rheological characterisation of fresh concrete is not possible via commercial rheometers. The so-called concrete rheometers provide valuable relative values for comparing different concretes, but they cannot measure absolute values. Therefore, we developed an adaptive coaxial concrete rheometer (ACCR) that allows the measurement of fresh concrete with particles up to d max = 5.5 mm {d}_{{\rm{\max }}}=5.5\hspace{.5em}{\rm{mm}} . The comparison of the ACCR with a commercial rheometer showed very good agreement for selected test materials (Newtonian fluid, shear thinning fluid, suspension, and yield stress fluid), so that self-compacting concrete was subsequently measured. Since these measurements showed a very high reproducibility, the rheological properties of the fresh concrete could be determined with high accuracy. The common flow models (Bingham (B), Herschel–Bulkley, modified Bingham (MB) models) were also tested for their applicability, with the Bingham and the modified Bingham model proving to be the best suitable ones.}}, author = {{Josch, Sebastian and Jesinghausen, Steffen and Schmid, Hans-Joachim}}, issn = {{1617-8106}}, journal = {{Applied Rheology}}, keywords = {{Condensed Matter Physics, General Materials Science}}, number = {{1}}, publisher = {{Walter de Gruyter GmbH}}, title = {{{Development of an adaptive coaxial concrete rheometer and rheological characterisation of fresh concrete}}}, doi = {{10.1515/arh-2022-0140}}, volume = {{33}}, year = {{2023}}, } @inproceedings{44103, author = {{Neukötter, Moritz and Jesinghausen, Steffen and Schmid, Hans-Joachim}}, location = {{Berlin}}, title = {{{Particles as Seeds for Instabilities in Uniaxially Elongated Polymer Suspension Filaments (Presentation)}}}, year = {{2023}}, } @inproceedings{44102, author = {{Neukötter, Moritz and Jesinghausen, Steffen and Schmid, Hans-Joachim}}, location = {{Athens}}, title = {{{Instabilities of Polymer Melt Suspensions under Uniaxial Extension (Poster)}}}, year = {{2023}}, } @article{31035, abstract = {{AbstractFurther innovation in the field of selective laser sintering (SLS) is strongly connected to the availability of new materials since the market is dominated by polyamide 12 (>90%). The aim of this publication is to develop a descriptive model for the droplet formation process in a Filament Extension Atomizer to predict the applicability to exploit further polymers for the SLS process. The feasibility was tested, investigated and characterized using a “Dripping out of a nozzle” setup for uniaxial extension. The droplet formation process was then observed via high-speed camera imaging and classified for certain parameters. The experiments were carried out using semi-diluted polyethylene oxide (600–4000 kg/mol), glycerol and water solutions as model fluids. Driven by the Plateau-Rayleigh instability, different types of spherical droplets were observed and various droplet formation mechanisms demonstrated and analyzed. Based on the experimental results, a predictive model is derived to describe various essential parameters.}}, author = {{Neukötter, Moritz and Jesinghausen, Steffen and Schmid, Hans-Joachim}}, issn = {{0035-4511}}, journal = {{Rheologica Acta}}, keywords = {{Rheology, SLS, Lasersintering, exensional rheology}}, publisher = {{Springer Science and Business Media LLC}}, title = {{{Model droplet formation in extensional filament stretching within a Filament Extension Atomizer}}}, doi = {{10.1007/s00397-022-01339-y}}, year = {{2022}}, } @article{35729, author = {{Rüther, Moritz Johannes and Klippstein, Sven Helge and Ponusamy, SathishKumar and Jesinghausen, Steffen and Schmid, Hans-Joachim}}, journal = {{Werkstoffe}}, pages = {{18 -- 19}}, publisher = {{HW-Verlag}}, title = {{{Innovative Werkstoffherstellung für das Polymer Laser Sintern – Teil 2}}}, volume = {{6}}, year = {{2022}}, } @article{35724, author = {{Rüther, Moritz Johannes and Klippstein, Sven Helge and Ponusamy, SathishKumar and Jesinghausen, Steffen and Schmid, Hans-Joachim}}, journal = {{Werkstoffe}}, pages = {{28--29}}, publisher = {{HW-Verlag}}, title = {{{Innovative Werkstoffherstellung für das Polymer Laser Sintern – Teil 1}}}, volume = {{5}}, year = {{2022}}, } @inproceedings{41160, author = {{Neukötter, Moritz and Jesinghausen, Steffen and Schmid, Hans-Joachim}}, location = {{Digital}}, title = {{{Triggering instabilities of polymer solution suspensions under uniaxial extension (Presentation)}}}, year = {{2022}}, } @inproceedings{41158, author = {{Neukötter, Moritz and Jesinghausen, Steffen and Schmid, Hans-Joachim}}, location = {{Sevilla}}, title = {{{Instability analysis of suspensions with a polymer solution matrix (Presentation)}}}, year = {{2022}}, } @inproceedings{43238, author = {{Rüther, Torben and Jesinghausen, Steffen and Schmid, Hans-Joachim}}, keywords = {{Couette, Rheology, Correction}}, location = {{Sevilla}}, title = {{{A novel correction method for the shear rate in a couette rheometer (Vortrag)}}}, year = {{2022}}, } @inproceedings{43240, author = {{Rüther, Torben and Jesinghausen, Steffen and Schmid, Hans-Joachim}}, title = {{{NEW CORRECTION APPROACHES FOR DETERMINING THE TRUE SHEAR RATE IN A COAXIAL-RHEOMETER (Vortrag)}}}, year = {{2022}}, } @misc{24202, author = {{Pawelczyk, Sebastian and Jesinghausen, Steffen and Schmid, Hans-Joachim}}, title = {{{Charakterisierung des Fließverhaltens von Frischbeton – Entwicklung eines adaptiven Rheometers (ACCR) und Einfluss von Maßnahmen zur Sedimentationsprävention}}}, year = {{2021}}, } @inproceedings{24475, author = {{Neukötter, Moritz and Jesinghausen, Steffen and Schmid, Hans-Joachim}}, location = {{Online}}, title = {{{Theoretische Beschreibung des Tropfenbildungsprozesses bei der Filament Extension Atomization: Entwicklung eines Vorhersagemodells für die Tropfengröße (Poster)}}}, year = {{2021}}, }