@article{48746,
  author       = {{Schöppner, Volker and Kleinschmidt, Dennis and Hopmann, C. and Wiesel, C. and Nillius, U. and Schön, M. and Limper, A.}},
  journal      = {{KGK Kautschuk Gummi Kunststoffe}},
  pages        = {{47--52}},
  title        = {{{Optimisation of the Simulation of Rubber Extrusion dies by means of the Integration of empirically determined characteristic Maps}}},
  year         = {{2023}},
}

@inproceedings{48745,
  author       = {{Schöppner, Volker and Gevers, Karina and Albrecht, M. and Seefried, A.}},
  location     = {{Chemnitz (Deutschland)}},
  title        = {{{Mischmaterialschweißen von PC/ABS und PMMA beim Warmgasstumpfschweißen mit Runddüsen}}},
  year         = {{2023}},
}

@inproceedings{48744,
  author       = {{Petzke, J. and Kleinschmidt, Dennis and Schöppner, Volker}},
  location     = {{St. Gallen (Schweiz)}},
  title        = {{{Microwave Heating of Rubber Extrudates}}},
  year         = {{2023}},
}

@article{48741,
  author       = {{Moritzer, Elmar and Kartelmeyer, Stephan and Kringe, Roberg and Jaroschek, Christoph}},
  journal      = {{Kunststoffe}},
  number       = {{8/2023}},
  pages        = {{56--59}},
  title        = {{{Konturnah kühlen für wenig Geld}}},
  year         = {{2023}},
}

@inproceedings{48740,
  author       = {{Schöppner, Volker and Trienens, Dorte}},
  location     = {{Ilmenau}},
  title        = {{{Investigation regarding the correlation of the relative influences during the extrusion process of cast films on the residual melt quality}}},
  doi          = {{10.22032/dbt.58867}},
  year         = {{2023}},
}

@article{48743,
  author       = {{Schöppner, Volker and Altepeter, Matthias and Schall, Christoph Wilhelm Theodor and Wanke, Sven and Kley, Marina}},
  issn         = {{2073-4360}},
  journal      = {{Polymers}},
  pages        = {{10}},
  title        = {{{Material-Preserving Extrusion of Polyamide on a Twin-Screw Extruder}}},
  year         = {{2023}},
}

@phdthesis{49509,
  abstract     = {{Bei der Auslegung von Einschnecken-Plastifizierextrudern mit genutetem Einzug sind Simulationen ein gängiges Mittel, um zeit-, ressourcen- und kostenintensive experimentelle Untersuchungen einzusparen. Bestehende mathematisch-physi-kalische Berechnungsmodelle auf Basis analytischer Gleichungen weisen jedoch einige Annahmen und Vereinfachungen auf, die die Qualität der rechnerischen Vorhersage reduzieren können. Diese Arbeit liefert daher einen Beitrag, indem analytische Modelle zur Berechnung des Druck-Durchsatz-Verhaltens und der Antriebsleistung in genuteten Einzugszonen mithilfe von numerischen Simulatio-nen basierend auf der Diskrete-Elemente-Methode (DEM) überprüft werden. Es wird gezeigt, dass die Annahme eines gegendruckunabhängigen Durchsatzver-haltens sowie die Unterscheidung in form- und reibschlüssige Förderfälle ge-rechtfertigt ist. Die Annahme einer Blockströmung ist oft nicht gerechtfertigt, auch wenn dies nicht notwendigerweise zu Abweichungen in der Durchsatzberech-nung führt. Für die analytische Durchsatz- und Leistungsberechnung werden re-gressionsbasierte Korrekturfaktoren eingeführt, die die Vorhersagegenauigkeit steigern. Weiterführende Untersuchungen zeigen, unter welchen Bedingungen und mit welchen Maßnahmen sich der Durchsatz von genuteten Einzugszonen steigern lässt. Schließlich wird eine Methode zur Kalibrierung von DEM-Simula-tionen vorgestellt, mit welcher sich die Abbildungsgenauigkeit des tribologischen Verhaltens des Schüttguts erhöhen lässt.}},
  author       = {{Brüning, Florian}},
  isbn         = {{978-3-8440-9181-6}},
  pages        = {{101}},
  publisher    = {{Shaker Verlag}},
  title        = {{{Modellierung der Feststoffförderung im Einzug von Nutbuchsenextrudern mit Hilfe von DEM-Simulationen}}},
  volume       = {{Band 1/2023}},
  year         = {{2023}},
}

@phdthesis{49725,
  author       = {{Hartung, Michael}},
  title        = {{{Untersuchung der UVC-Bestrahlung als Oberflächenvorbehandlungsmethode von Polycarbonaten zur Erzeugung einer Verbundhaftung zu Flüssigsilikonkautschuken }}},
  year         = {{2023}},
}

@inproceedings{49740,
  author       = {{Stüker, Daniel and Schöppner, Volker}},
  booktitle    = {{INTERNATIONAL CONFERENCE ON HUMANS AND TECHNOLOGY: A HOLISTIC AND SYMBIOTIC APPROACH TO SUSTAINABLE DEVELOPMENT: ICHT 2022}},
  issn         = {{0094-243X}},
  publisher    = {{AIP Publishing}},
  title        = {{{An approach for the numerical calculation of the non-isothermal pressure-throughput-characteristics of single screw melt-extruder}}},
  doi          = {{10.1063/5.0138944}},
  year         = {{2023}},
}

@inproceedings{49737,
  author       = {{Malatyali, Hatice and Schöppner, Volker and Hoemann, Theresa}},
  booktitle    = {{INTERNATIONAL CONFERENCE ON HUMANS AND TECHNOLOGY: A HOLISTIC AND SYMBIOTIC APPROACH TO SUSTAINABLE DEVELOPMENT: ICHT 2022}},
  issn         = {{0094-243X}},
  publisher    = {{AIP Publishing}},
  title        = {{{Investigation of the influence of process and screw configurations on fiber length for recycled carbon fiber}}},
  doi          = {{10.1063/5.0139631}},
  year         = {{2023}},
}

@inproceedings{49734,
  author       = {{Malatyali, Hatice and Schöppner, Volker}},
  booktitle    = {{INTERNATIONAL CONFERENCE ON HUMANS AND TECHNOLOGY: A HOLISTIC AND SYMBIOTIC APPROACH TO SUSTAINABLE DEVELOPMENT: ICHT 2022}},
  issn         = {{0094-243X}},
  publisher    = {{AIP Publishing}},
  title        = {{{Investigation of shear rates in twin-screw extruder using CFD-simulation}}},
  doi          = {{10.1063/5.0139630}},
  year         = {{2023}},
}

@inproceedings{49742,
  author       = {{Bürenhaus, Franziska Isabelle and Moritzer, Elmar}},
  booktitle    = {{INTERNATIONAL CONFERENCE ON HUMANS AND TECHNOLOGY: A HOLISTIC AND SYMBIOTIC APPROACH TO SUSTAINABLE DEVELOPMENT: ICHT 2022}},
  issn         = {{0094-243X}},
  publisher    = {{AIP Publishing}},
  title        = {{{Influence of fiber geometry and sizing on glass fiber breakage}}},
  doi          = {{10.1063/5.0135843}},
  year         = {{2023}},
}

@article{49866,
  abstract     = {{<jats:title>Abstract</jats:title><jats:p>The use of heterogeneous materials, such as composites with Prandtl‐Reuss‐type material laws, has increased in industrial praxis, making finite element modeling with homogenization techniques a well‐accepted tool. These methods are particularly advantageous to account for microstructural mechanisms which can be related to nonlinearities and time‐dependency due to elasto‐plasticity behavior. However, their advantages are diminished by increasing computational demand. The present contribution deals with the balance of accuracy and numerical efficiency of nonlinear homogenization associated with a framework of goal‐oriented adaptivity, which takes into account error accumulation over time. To this end, model adaptivity of homogenization methods is coupled to mesh adaptivity on the macro scale. Our new proposed adaptive procedure is driven by a goal‐oriented a posteriori error estimator based on duality techniques using downwind and upwind approximations. Due to nonlinearities and time‐dependency of the plasticity, the estimation of error transport and error generation is obtained with a backward‐in‐time dual method despite a high demand on memory capacity. In this contribution, the dual problem is solved with a forward‐in‐time dual method that allows estimating the full error during the resolution of the primal problem without the need for extra memory capacity. Finally, a numerical example illustrates the effectiveness of the proposed adaptive approach.</jats:p>}},
  author       = {{Tchomgue Simeu, Arnold and Mahnken, Rolf}},
  issn         = {{1617-7061}},
  journal      = {{PAMM}},
  keywords     = {{Electrical and Electronic Engineering, Atomic and Molecular Physics, and Optics}},
  publisher    = {{Wiley}},
  title        = {{{Downwind and upwind approximations for mesh and model adaptivity of elasto‐plastic composites}}},
  doi          = {{10.1002/pamm.202300136}},
  year         = {{2023}},
}

@phdthesis{50448,
  abstract     = {{Hybridstrukturen bieten bei Anwendungen mit Biegebeanspruchung ein großes Leichtbaupotenzial, erfordern jedoch komplexe und zum Teil mehrschrittige Fertigungsverfahren. In dieser Arbeit wird ein Verfahren entwickelt, das auf Basis des Fließpressprozesses biegebelastbare Hybridbalken in einem Schritt herstellt. Dazu wird ein Versuchsträger entwickelt, der die Komplexität von Realbauteilen abbildet und für zerstörende sowie zerstörungsfreie Charakterisierungsmethoden geeignet ist. Der Versuchsträger besteht aus einer funktionalisierten Kernstruktur aus Glasfasermattenverstärktem Polypropylen und äußeren Metallgurten aus Stahl- und Aluminiumlegierungen, die mit einem Haftvermittlerfilm versehen sind. Anhand des Versuchsträgers wird ein Fließpresswerkzeug und eine instrumentierte Fertigungsanlage entwickelt, mit der die Hybridstrukturen prototypisch hergestellt werden. Zur Prozessoptimierung wird die Verbindung mechanisch und optisch auf Probenebene analysiert. Weiterhin erfolgen Bauteiluntersuchungen anhand von Dreipunktbiegetests, mit denen das strukturelle Verhalten der Hybridbalken charakterisiert wird. Es wird festgestellt, dass sich mit dem einstufigen Fließpressverfahren sehr gute Verbundfestigkeiten erzielen lassen. Die Temperatur- und Druckführung weisen dabei einen großen Einfluss auf das Ergebnis auf. Anhand der Bauteiluntersuchungen wird bestätigt, dass mit dem entwickelten Verfahren Hybridbalken in nur einem Schritt gefertigt werden können, die vergleichbare mechanische Eigenschaften zu Hybridstrukturkonzepten aus mehrschrittigen Fertigungsverfahren aufweisen.}},
  author       = {{Stallmeister, Tim}},
  title        = {{{Verfahrensentwicklung zur einstufigen Herstellung von biegebelastbaren Hybridstrukturen im Fließpressprozess}}},
  doi          = {{10.17619/UNIPB/1-1670}},
  year         = {{2023}},
}

@misc{48335,
  author       = {{Knorr, Lukas and Jungeilges, André and Pfeifer, Florian and Burmeister, Sascha Christian and Meschede, Henning}},
  publisher    = {{4. Aachener Ofenbau- und Thermoprozess-Kolloquium}},
  title        = {{{Regenerative Energien für einen effizienten Betrieb von Presshärtelinien}}},
  year         = {{2023}},
}

@misc{49106,
  author       = {{Jungeilges, André}},
  publisher    = {{Car Body Parts - Automotive Circle Conference}},
  title        = {{{Possibilities of Sustainable Heating Methods for Press Hardening Processes}}},
  year         = {{2023}},
}

@article{46023,
  abstract     = {{<jats:p>This article presents the potential-dependent adsorption of two proteins, bovine serum albumin (BSA) and lysozyme (LYZ), on Ti6Al4V alloy at pH 7.4 and 37 °C. The adsorption process was studied on an electropolished alloy under cathodic and anodic overpotentials, compared to the open circuit potential (OCP). To analyze the adsorption process, various complementary interface analytical techniques were employed, including PM-IRRAS (polarization-modulation infrared reflection-absorption spectroscopy), AFM (atomic force microscopy), XPS (X-ray photoelectron spectroscopy), and E-QCM (electrochemical quartz crystal microbalance) measurements. The polarization experiments were conducted within a potential range where charging of the electric double layer dominates, and Faradaic currents can be disregarded. The findings highlight the significant influence of the interfacial charge distribution on the adsorption of BSA and LYZ onto the alloy surface. Furthermore, electrochemical analysis of the protein layers formed under applied overpotentials demonstrated improved corrosion protection properties. These studies provide valuable insights into protein adsorption on titanium alloys under physiological conditions, characterized by varying potentials of the passive alloy.</jats:p>}},
  author       = {{Duderija, Belma and González-Orive, Alejandro and Ebbert, Christoph and Neßlinger, Vanessa and Keller, Adrian and Grundmeier, Guido}},
  issn         = {{1420-3049}},
  journal      = {{Molecules}},
  keywords     = {{Chemistry (miscellaneous), Analytical Chemistry, Organic Chemistry, Physical and Theoretical Chemistry, Molecular Medicine, Drug Discovery, Pharmaceutical Science}},
  number       = {{13}},
  publisher    = {{MDPI AG}},
  title        = {{{Electrode Potential-Dependent Studies of Protein Adsorption on Ti6Al4V Alloy}}},
  doi          = {{10.3390/molecules28135109}},
  volume       = {{28}},
  year         = {{2023}},
}

@article{51167,
  author       = {{Duderija, B. and Sahin, F. and Meinderink, D. and Calderón-Gómez, J.C. and Schmidt, H.C. and Homberg, W. and Grundmeier, G. and González-Orive, A.}},
  issn         = {{2666-3309}},
  journal      = {{Journal of Advanced Joining Processes}},
  keywords     = {{Mechanical Engineering, Mechanics of Materials, Engineering (miscellaneous), Chemical Engineering (miscellaneous)}},
  publisher    = {{Elsevier BV}},
  title        = {{{Electropolymerization of acrylic acid on steel for enhanced joining by plastic deformation}}},
  doi          = {{10.1016/j.jajp.2023.100181}},
  volume       = {{9}},
  year         = {{2023}},
}

@article{48277,
  abstract     = {{<jats:title>Abstract</jats:title><jats:p>Currently, the fused deposition modeling (FDM) process is the most common additive manufacturing technology. The principle of the FDM process is the strand wise deposition of molten thermoplastic polymers, by feeding a filament trough a heated nozzle. Due to the strand and layer wise deposition the cooling of the manufactured component is not uniform. This leads to dimensional deviations which may cause the component to be unusable for the desired application. In this paper, a method is described which is based on the shrinkage compensation through the adaption of every single raster line in components manufactured with the FDM process. The shrinkage compensation is based on a model resulting from a DOE which considers the main influencing factors on the shrinkage behavior of raster lines in the FDM process. An in‐house developed software analyzes the component and locally applies the shrinkage compensation with consideration of the boundary conditions, e.g., the position of the raster line in the component and the process parameters. Following, a validation using a simple geometry is conducted to show the effect of the presented adaptive scaling method.</jats:p>}},
  author       = {{Moritzer, Elmar and Hecker, Felix}},
  issn         = {{1022-1360}},
  journal      = {{Macromolecular Symposia}},
  keywords     = {{Materials Chemistry, Polymers and Plastics, Organic Chemistry, Condensed Matter Physics}},
  location     = {{Bukarest}},
  number       = {{1}},
  publisher    = {{Wiley}},
  title        = {{{Adaptive Scaling of Components in the Fused Deposition Modeling Process}}},
  doi          = {{10.1002/masy.202200181}},
  volume       = {{411}},
  year         = {{2023}},
}

@inproceedings{48357,
  author       = {{Moritzer, Elmar and Hecker, Felix and Knaup, Felix and Wächter, Julian}},
  booktitle    = {{Proceedings of the 37th International Conference of the Polymer Processing Society (PPS-37)}},
  location     = {{Fukuoka (Japan)}},
  pages        = {{170001--1 -- 170001--5}},
  publisher    = {{AIP Publishing}},
  title        = {{{Investigation of the Deposition Velocity Related Temperature Deviations for High Temperature Materials in the FDM Process}}},
  doi          = {{10.1063/5.0168548}},
  year         = {{2023}},
}