@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}},
}
@inproceedings{51727,
author = {{Beimdiek, Janis and Schmid, Hans-Joachim}},
location = {{Nürnberg}},
publisher = {{VDI Verlag}},
title = {{{Entrained flow SCR using an in-situ synthesis of catalyst particles for a combined flue gas cleaning system}}},
year = {{2023}},
}
@inproceedings{51726,
author = {{Beimdiek, Janis and Schmid, Hans-Joachim}},
location = {{Paderborn}},
title = {{{Neuartige Flugstrom SCR an online synthetisierten, nanoskaligen Katalysatorpartikeln in einem kombinierten Gasreinigungsprozess (Poster)}}},
year = {{2023}},
}
@inproceedings{51147,
author = {{Massopo, Orlando and Tischendorf, Ricardo and Schmid, Hans-Joachim and Fröde, Fabian and Grenga, Temistocle and Pitsch, Heinz and Bieber, Malte and Reddemann, Manuel and Kneer, Reinhold}},
keywords = {{Flame Stability, Particle Sample Extraction, SMPS, Impurities}},
location = {{Nürnberg}},
publisher = {{International Congress of Particle Technology}},
title = {{{Influence of atomization on the particle formation in spray flame pyrolysis (Presentation)}}},
year = {{2023}},
}
@inproceedings{51142,
author = {{Massopo, Orlando and Tischendorf, Ricardo and Schmid, Hans-Joachim and Fröde, Fabian and Pitsch, Heinz and Reddemann, Manuel and Grenga, Temistocle and Kneer, Reinhold}},
keywords = {{SpraySyn, Flammenspraypyrolyse, Maghemite Nanopartikel, Gas to particle-Syntheseweg, Probennahme, Verunreinigung}},
location = {{Paderborn}},
publisher = {{Jahrestreffen der DECHEMA-Fachgruppen Aerosoltechnik, Gasreinigung, Mehrphasenströmung und Partikelmesstechnik}},
title = {{{Einfluss der Zerstäubung auf diePartikelbildung bei der Sprayflammenpyrolyse (Vortrag)}}},
year = {{2023}},
}
@article{54632,
author = {{Bentrup, Leon Alexander and Gräßer, Melanie and Temmen, Katrin and Schmid, Hans-Joachim}},
journal = {{die hochschullehre}},
number = {{9}},
publisher = {{wbv Publikation}},
title = {{{Entwicklung eines neuen Konzeptes zur Vermittlung von Lerntechniken und Selbstlernkompetenzen für Studierende des Maschinenbaus an der Universität Paderborn}}},
doi = {{10.3278/HSL2310W}},
year = {{2023}},
}
@article{43032,
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{30229,
author = {{Klippstein, Sven Helge}},
location = {{Online}},
title = {{{Reproducibility in Polymer Laser Sintering}}},
year = {{2022}},
}
@inproceedings{33355,
author = {{Klippstein, Sven Helge}},
location = {{Berlin}},
publisher = {{7. AM Forum Berlin}},
title = {{{Neue Polymerwerkstoffe - Der Schlüssel für die Industrialisierung}}},
year = {{2022}},
}
@inproceedings{30220,
abstract = {{In this work, the influences of spherical fillers on the processing properties and the resulting mechanical properties of laser sintered components are investigated. For this purpose, micro glass spheres, hollow glass bubbles and mineral spheres are dry blended to the matrix polymers polyamide 613 and polypropylene with a filling ratio of 20 and 40 vol%. First, relevant properties of the blends, such as powder flowability, thermal behavior and melt viscosity, are investigated. Based on the results, processing parameters are then developed for the LS process and the mechanical properties of the components are investigated. The aim is to be able to tailor the mechanical properties of LS components by adding fillers and thus to create new application areas for additively manufactured components. }},
author = {{Kletetzka, Ivo and Gawlikowicz, Roland and Schmid, Hans-Joachim}},
booktitle = {{Proceedings of the 33th Annual International Solid Freeform Fabrication Symposium}},
location = {{Austin}},
publisher = {{Laboratory for Freeform Fabrication and University of Texas}},
title = {{{Effects of spherical fillers on the processability and mechanical properties of PA613 and PP-based LS dry blends}}},
doi = {{http://dx.doi.org/10.26153/tsw/44558}},
volume = {{33}},
year = {{2022}},
}
@inproceedings{32874,
author = {{Kletetzka, Ivo and Klippstein, Sven Helge and Schmid, Hans-Joachim}},
booktitle = {{Proceedings of the 33th Annual International Solid Freeform Fabrication Symposium}},
location = {{Austin}},
publisher = {{Laboratory for Freeform Fabrication and University of Texas}},
title = {{{Shelf Life of Polyamide 12 (PA2200) Laser Sintering Powder}}},
doi = {{http://dx.doi.org/10.26153/tsw/44555}},
volume = {{33}},
year = {{2022}},
}
@misc{51718,
author = {{Schlattmann, Ulrich and Beimdiek, Janis}},
title = {{{Charakterisierung von Schüttschichtmaterialien für den Einsatz in Filtern für häusliche Holzfeuerungsanlagen (Studienarbeit)}}},
year = {{2022}},
}
@misc{51666,
author = {{Goncz, Nico and Ponusamy, SathishKumar}},
title = {{{Untersuchung der Charakterisierung der Partikelform und deren Einfluss auf die Fließfähigkeit}}},
year = {{2022}},
}
@misc{51662,
author = {{Keksel, Ewald and Ponusamy, SathishKumar}},
title = {{{Untersuchung eines neuen dynamischen- mechanischen Partikelverrundungsprozesses (Studienarbeit)}}},
year = {{2022}},
}
@misc{51664,
author = {{Almohammad, Ahmad and Ponusamy, SathishKumar}},
title = {{{Untersuchung der Polymer-Zerkleinerung in einer Kryo-Prallmühle (Studienarbeit)}}},
year = {{2022}},
}
@misc{54386,
author = {{Engemann, Julian}},
title = {{{Studie zum Auftragsverhalten von SLS-Pulvern in Abhängigkeit ihrer Fließfähigkeit}}},
year = {{2022}},
}
@misc{54388,
author = {{Bettker, Dominik}},
title = {{{Inbetriebnahme eines Hochdruckkapillarrheometers zur Untersuchung gasbeladener Polymerschmelzen (Studienarbeit)}}},
year = {{2022}},
}
@misc{54387,
author = {{Cardinal, Daniel}},
title = {{{Vergleich zweier Messverfahren zur Bestimmung der Fließfähigkeit bei erhöhten Temperaturen}}},
year = {{2022}},
}
@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}},
}
@phdthesis{42127,
author = {{Kummert, Christina}},
isbn = {{978-3-8440-8867-0}},
pages = {{157}},
publisher = {{Shaker Verlag}},
title = {{{Über die thermischen und thermisch-oxidativen Einflüsse auf Lasersinter-Werkstoffe}}},
volume = {{26}},
year = {{2022}},
}