@inbook{58440,
  author       = {{Wippermann, Jan and Meschut, Gerson}},
  booktitle    = {{Proceedings of the Munich Symposium on Lightweight Design 2023}},
  isbn         = {{9783031646683}},
  publisher    = {{Springer Nature Switzerland}},
  title        = {{{Effect of Water Absorption on the Clamp Load of Plastic Nuts}}},
  doi          = {{10.1007/978-3-031-64669-0_5}},
  year         = {{2024}},
}

@article{58442,
  author       = {{Wippermann, Jan and Meschut, Gerson}},
  journal      = {{JOINING PLASTICS}},
  title        = {{{Analyse des Ein- und Überdrehmoments von Kunststoffmuttern in Abhängigkeit von der Luftfeuchtigkeit}}},
  volume       = {{18}},
  year         = {{2024}},
}

@phdthesis{58448,
  abstract     = {{Die Inbetriebnahme von Steuerungen und Regelungen stellt sicher, dass ein mechatronisches System ordnungsgemäß funktioniert und den Anforderungen gerecht wird. Der modellbasierte Entwurf basiert auf einem genauen Simulationsmodell. Allerdings ist dieser klassische Weg bei komplexen Systemen oft nicht praktikabel, da die analytische Modellierung zu kompliziert und zeitaufwendig ist. Diese Forschungslücke wird durch Verfahren adressiert, die eine effiziente und sichere Inbetriebnahme ermöglichen. Diese Verfahren kombinieren Regelungstechnik und Reinforcement Learning und nutzen vorhandenes Wissen über die Regelungsaufgabe, um Korrekturen basierend auf Messdaten und der probabilistischen Gauß-Prozess-Regression vorzunehmen. Das Vorwissen kann als teilweise bekanntes physikalisches Modell oder als Steuerungsfunktion vorliegen. Anwendungsbeispiele sind der Ultraschalldrahtbondprozess, verschiedene Pendelsysteme und ein Hexapod. Eine angepasste Bayessche Optimierung wird zur Identifikation einer Steuerparametrisierung für das Ultraschallbonden eingesetzt. Außerdem wird eine hybride Optimalsteuerung für das Doppelpendel auf einem Wagen entwickelt und erfolgreich validiert. Fur einen Hexapod zur Fahrzeugachsprüfung wird eine hybride Zustandslinearisierung formuliert und ein Funktionsnachweis im Rahmen einer Simulation erbracht. Die Einhaltung technischer Rahmenbedingungen und stabiles Systemverhalten werden durch probabilistische Pradiktionen gewährleistet. In allen Anwendungsfällen wird eine Steigerung der Effizienz und Güte erzielt.}},
  author       = {{Hesse, Michael}},
  isbn         = {{978-3-947647-45-3}},
  issn         = {{2365-4422}},
  publisher    = {{Heinz Nixdorf Institut}},
  title        = {{{Interaktive Inbetriebnahme von Steuerungen und Regelungen für partiell bekannte dynamische Systeme mittels Gauß-Prozess-Regression}}},
  doi          = {{10.17619/UNIPB/1-2135}},
  volume       = {{426}},
  year         = {{2024}},
}

@inproceedings{58446,
  author       = {{Wippermann, Jan and Meschut, Gerson}},
  booktitle    = {{14 Gemeinsames Kolloquium Zur Mechanischen Fügetechnik}},
  title        = {{{Entwicklung einer Methode zur Prognose der Verschraubungsparameter von Kunststoffmuttern}}},
  year         = {{2024}},
}

@inproceedings{58458,
  author       = {{Gilich, Julian and Teutenberg, Dominik and Meschut, Gerson and Gröger, Benjamin and Wiebicke, Felix and Koch, Ilja and Gude, Maik}},
  booktitle    = {{77th IIW Annual Assembly and International Conference on Welding and Joining}},
  location     = {{Rhodos, Griechenland}},
  title        = {{{Influences on the Material Displacement and Compression Stresses in the Joining Process of Highly Viscous Thermal Interface Materials}}},
  year         = {{2024}},
}

@inproceedings{56487,
  author       = {{Ehlert, Thomas and Mamedov, Tural and Schubert, Markus and Kenig, Eugeny Y.}},
  location     = {{Dresden}},
  title        = {{{Estimation of efficiency loss for stationary and moving structured packing columns using the hydrodynamic analogy approach}}},
  year         = {{2024}},
}

@article{56961,
  abstract     = {{Der Beitrag untersucht die Effekte eines zwei Sitzungen umfassenden, partizipativen und themenunabhängig integrierbaren Lehrmoduls zur Stärkung der Demokratiebildungskompetenz von Lehramtsstudierenden (N = 159) in einer quasi-experimentellen Studie vom Sommersemester 2023 bis zum Sommersemester 2024. Die Ergebnisse der zweifaktoriellen Varianzanalysen mit Messwiederholungen (Pre-, Post- und Follow-up) verdeutlichen Effekte des Lehrmoduls auf die Selbstwirksamkeitserwartungen der Studierenden zur partizipativ-verfahrensorientierten Unterrichtsgestaltung und auf das methodische Wissen zur demokratischen Erarbeitung von Beurteilungskriterien in unterrichtlichen Lehr-Lern-Arrangements.}},
  author       = {{Wehde, Janis}},
  issn         = {{2219-6994}},
  journal      = {{Zeitschrift für Hochschulentwicklung}},
  number       = {{3}},
  pages        = {{267--287}},
  publisher    = {{OAPublishing Collective}},
  title        = {{{Effekte eines partizipativen Lehrmoduls zur Demokratiebildung im Lehramtsstudium}}},
  doi          = {{10.21240/zfhe/19-03/15}},
  volume       = {{19}},
  year         = {{2024}},
}

@inproceedings{58503,
  author       = {{Hambach, Dennis}},
  location     = {{Paderborn}},
  title        = {{{Technologieakzeptanz beim Einsatz von Handhelds zur Unterstützung des Hörverstehens. Eine Datendiskussion}}},
  year         = {{2024}},
}

@inproceedings{49430,
  abstract     = {{Within the current energy and environmental crisis, new material- and energy-saving processes are needed. For this reason, this study focuses on the development of a new forming technology for Ti-6Al-4V sheet metal. It is based on combination of solution treatment by resistive heating with rapid tool-based quenching and subsequent annealing. This new “TISTRAQ” process is comparable with press-hardening already known for steels and hot die quenching known for aluminium alloys. One of the main influencing factors for this process is the heat transfer coefficient (HTC). It is an important driver for adjustment of basic parameters, as selection of tool material or the forming speed but also plays an important role while elaborating temperature distribution in the numerical model. Therefore, a new and unique test rig was developed to determine the HTC and to perform tool-based heat treatment at specimen level under laboratory conditions. The test rig was used to investigate the influence of the titanium-tool-lubricant system on HTC and cooling rate. Further the effect of heat treatment in the test rig and tool-based quenching on microstructure and mechanical properties was studied. To improve the prediction of the temperature distribution of the titanium during cooling, the HTC was integrated into the numerical process simulation}},
  author       = {{Kaiser, Maximilian Alexander and Höschen, Fabian and Pfeffer, Nina and Merten, Mathias and Meyer, Thomas and Marten, Thorsten and Rockicki, Pawel and Höppel, Heinz Werner and Tröster, Thomas}},
  booktitle    = {{IOM3. Chapter 14: Forming, Machining & Joining [version 1; not peer reviewed]}},
  keywords     = {{Interfacial heat transfer coefficient, Ti-6Al-4V, nonisothermal forming, thermomechanical processing, TISTRAQ process}},
  location     = {{Edinburgh}},
  title        = {{{The new TISTRAQ process: Solution treatment with rapid quenching and annealing for Ti-6Al-4V sheet metal part forming - investigation on heat transfer coefficient and influence on cooling rates}}},
  doi          = {{doi.org/10.7490/f1000research.1119929.1}},
  year         = {{2024}},
}

@inproceedings{49437,
  abstract     = {{The phase and TTT diagrams of the Ti-6Al-4V system allow the development of a new forming process for a more energy- and materialefficient production of sheet metal parts. This new “TISTRAQ” process is composed of two steps. In terms of process technology, the first step is comparable to a direct press-hardening process already well known for steels. In this step, the Ti-6Al-4V sheet material is resistively heated to a temperature below β-transus Tβ and, after a very short holding time, simultaneously formed and quenched by use of water cooled tools. Thereby, the β phase undergoes a martensitic transformation. The second step is a subsequent short-time annealing, which leads to a hardening of the material. In this work, a new test rig using resistive heating technique was used in order to produce
different solution treated and tool quenched (STQ) and subsequently annealed (STA) states. In this paper, the effects of heating rate, solution treatment temperature and holding time on microstructure and mechanical properties are addressed. For the characterisation, tensile testing and scanning electron microscopy were used. By the systematic variation of applied processing parameters, dominating effects on microstructure and mechanical properties were evaluated. For example, the solution treatment temperature was found to have a significant effect on microstructural features and characteristic strength and strain values. The obtained results reveal a high potential for future technical applications.}},
  author       = {{Pfeffer, Nina and Kaiser, Maximilian Alexander and Meyer, Thomas and Göken, Mathias and Höppel, Heinz Werner}},
  booktitle    = {{IOM3. Chapter 14: Forming, Machining & Joining [version 1; not peer reviewed]}},
  keywords     = {{Ti-6Al-4V, thermomechanical processing, resistive heating, quench-forming, process parameter-microstructure-properties relationship}},
  location     = {{Edinburgh}},
  title        = {{{The new TISTRAQ process: Solution treatment with rapid quenching and annealing for Ti-6Al-4V sheet metal part forming - the effect of processing parameters on microstructure and mechanical properties}}},
  doi          = {{https://doi.org/10.7490/f1000research.1119929.1}},
  year         = {{2024}},
}

@article{59585,
  abstract     = {{<jats:p>Similar to bulk metal forming, clinch joining is characterised by large plastic deformations and a variety of different 3D stress states, including severe compression. However, inherent to plastic forming is the nucleation and growth of defects, whose detrimental effects on the material behaviour can be described by continuum damage models and eventually lead to material failure. As the damage evolution strongly depends on the stress state, a stress-state-dependent model is utilised to correctly track the accumulation. To formulate and parameterise this model, besides classical experiments, so-called modified punch tests are also integrated herein to enhance the calibration of the failure model by capturing a larger range of stress states and metal-forming-specific loading conditions. Moreover, when highly ductile materials are considered, such as the dual-phase steel HCT590X and the aluminium alloy EN AW-6014 T4 investigated here, strong necking and localisation might occur prior to fracture. This can alter the stress state and affect the actual strain at failure. This influence is captured by coupling plasticity and damage to incorporate the damage-induced softening effect. Its relative importance is shown by conducting inverse parameter identifications to determine damage and failure parameters for both mentioned ductile metals based on up to 12 different experiments.</jats:p>}},
  author       = {{Friedlein, Johannes and Böhnke, Max and Schlichter, Malte Christian and Bobbert, Mathias and Meschut, Gerson and Mergheim, Julia and Steinmann, Paul}},
  issn         = {{2504-4494}},
  journal      = {{Journal of Manufacturing and Materials Processing}},
  number       = {{4}},
  publisher    = {{MDPI AG}},
  title        = {{{Material Parameter Identification for a Stress-State-Dependent Ductile Damage and Failure Model Applied to Clinch Joining}}},
  doi          = {{10.3390/jmmp8040157}},
  volume       = {{8}},
  year         = {{2024}},
}

@article{60106,
  abstract     = {{<jats:p> Clinching is a mechanical joining technology, in which a mainly form-fit joint is created by means of local cold forming. To characterize the load-bearing behavior of such joints, they are typically analyzed destructively, for example by tensile-shear tests in combination with metallographic sections. However, both the initiation and progress of failure can only be described to a limited extent by this method. Furthermore, these tests allow only limited conclusions about clinch points under in-service loading. More purposefully, clinch points can be analyzed nondestructively by combining in-situ computed tomography (CT) and transient dynamic analysis (TDA). The TDA continuously measures the dynamic behavior of the specimen and indicates failure events like crack initiation, which then can be evaluated thoroughly by stopping the test and performing a CT scan. To qualify the TDA for this task, it is necessary to link the observed damage behavior with specific dynamic characteristics. In this work, the complementation of in-situ CT and TDA is investigated by testing a clinched single-lap tensile-shear specimen made of aluminum. The testing procedure is stepwise: at certain displacement levels, the specimen is investigated by in-situ CT and TDA. While the in-situ CT provides the location, extent, and development of the failure phenomena, the TDA uses this information to evaluate the dynamic signal and detect relevant frequency ranges, which indicate damage events. The results demonstrate, that failure initiation and progression can be analyzed efficiently by combining both measuring systems. The TDA reliably detects relevant signal changes in the monitored frequency band. By means of in-situ computed tomography, the corresponding failure phenomena can be described in detail, enhancing the understanding of the load-bearing and deformation behavior of clinch points. The concatenation of characteristic signal changes and observed failure phenomena can henceforth be transferred to analyze complex structures during operation nondestructively by TDA. </jats:p>}},
  author       = {{Reschke, G and Köhler, D and Kupfer, R and Troschitz, J and Gude, M and Brosius, A}},
  issn         = {{0954-4089}},
  journal      = {{Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering}},
  publisher    = {{SAGE Publications}},
  title        = {{{In-situ computed tomography and transient dynamic analysis – failure analysis of a single-lap tensile-shear test with clinch points}}},
  doi          = {{10.1177/09544089241251646}},
  year         = {{2024}},
}

@article{60105,
  abstract     = {{<jats:p> Lightweight design by using low-density and load-adapted materials can reduce the weight of vehicles and the emissions generated during operation. However, the usage of different materials requires innovative joining technologies with increased versatility. In this investigation, the focus is on describing and characterising the failure behaviour of connections manufactured by an innovative thermomechanical joining process with adaptable auxiliary joining elements in single-lap tensile-shear tests. In order to analyse the failure development in detail, the specimens are investigated using in-situ computed tomography (in-situ CT). Here, the tensile-shear test is interrupted at points of interest and CT scans are conducted under load. In addition, the interrupted in-situ testing procedure is validated by comparing the loading behaviour with conventional continuous tensile-shear tests. The results of the in-situ investigations of joints with varying material combinations clearly describe the cause of failure, allowing conclusions towards an improved joint design. </jats:p>}},
  author       = {{Borgert, T and Köhler, D and Wiens, E. and Kupfer, R and Troschitz, J and Homberg, W and Gude, M}},
  issn         = {{1464-4207}},
  journal      = {{Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications}},
  number       = {{12}},
  pages        = {{2299--2306}},
  publisher    = {{SAGE Publications}},
  title        = {{{In-situ computed tomography analysis of the failure mechanisms of thermomechanically manufactured joints with auxiliary joining element}}},
  doi          = {{10.1177/14644207241232233}},
  volume       = {{238}},
  year         = {{2024}},
}

@inproceedings{60107,
  abstract     = {{<jats:p>Abstract. In lightweight constructions, clinching represents a cost-effective solution, in which joints are produced by local cold forming of the joining parts. Clinching phenomena are typically evaluated using destructive testing methods. While these methods influence the clinch point’s state, in-situ computed tomography (in-situ CT) is able to explore the clinching process with a specimen under load. Here, the path-controlled clinching process is interrupted at certain displacement levels and the specimen is scanned by CT while remaining in a stationary state. These interruptions are always accompanied by settling effects reducing the reaction force. Therefore, in this work, the influence of these interruptions on the force-displacement behavior during clinching and on the final clinch point’s geometric properties is investigated. </jats:p>}},
  author       = {{Köhler, D. and Kupfer, R. and Troschitz, J. and Gude, M.}},
  booktitle    = {{Materials Research Proceedings}},
  issn         = {{2474-395X}},
  publisher    = {{Materials Research Forum LLC}},
  title        = {{{In-situ CT of the clinching process – Influence of settling effects due to process interruptions}}},
  doi          = {{10.21741/9781644903131-187}},
  volume       = {{41}},
  year         = {{2024}},
}

@misc{63714,
  author       = {{Schultz, Andreas Maximilian and Mozgova, Iryna}},
  title        = {{{Wissensmanagement in Feuerwehren skalierbare IT-Architektur für Erweiterung und Austausch}}},
  year         = {{2024}},
}

@inproceedings{58233,
  abstract     = {{Extreme weather situations increasingly lead to hazardous situations with high demands on de-cision-making and communication. Weather and impact forecasts serve to prepare for such an emergency situation, and extreme data must be processed during operations. Therefore, extreme data is categorised with reference to global weather data and data from local situation reconnais-sance using sensors carried by mobile robots. A concept is presented in which information quality is explicitly considered in visualization for situational awareness. This extends existing principles of information visualisation with regard to the uncertainty resulting from extreme data. The re-sults are intended to help decision-makers at different management levels to make informed decisions.}},
  author       = {{Gräßler, Iris and Pottebaum, Jens and Hieb, Michael and Pratzler-Wanczura, Sylvia and Krüger, Oliver and Kruijff, Ivana and Rupp, Nicola}},
  booktitle    = {{Proceedings of the Days of Security Research 2023}},
  editor       = {{Bernsdorf, Bodo}},
  location     = {{Dortmund}},
  publisher    = {{Technische Hochschule Georg Agricola}},
  title        = {{{Weather-induced emergency situations: Extreme data in situational awareness and visualisation}}},
  year         = {{2024}},
}

@inproceedings{52537,
  author       = {{Gröger, Benjamin and Wiebicke, Felix and Koch, Ilja and Gude, Maik and Gilich, Julian and Meschut, Gerson}},
  booktitle    = {{24. Kolloquium: Gemeinsame Forschung in der Klebtechnik}},
  location     = {{Köln}},
  title        = {{{Experimentelle und numerische Analyse des Fließverhaltens von  hochviskosen Wärmeleitstoffen im Fertigungsprozess}}},
  year         = {{2024}},
}

@article{63842,
  author       = {{Hoener, Martin and Bierkandt, Thomas and Shaqiri, Shkelqim and Kasper, Tina}},
  issn         = {{1540-7489}},
  journal      = {{Proceedings of the Combustion Institute}},
  number       = {{1-4}},
  publisher    = {{Elsevier BV}},
  title        = {{{N2O oxidized combustion of ethylene: Detailed laminar flame structure and the significance of oxidizer decomposition kinetics for modeling}}},
  doi          = {{10.1016/j.proci.2024.105683}},
  volume       = {{40}},
  year         = {{2024}},
}

@inbook{57154,
  author       = {{Asiimwe, Henry and Bode, Henrik and Bogere, Paul and Freitag, Christine and Mangeni, Teddy}},
  booktitle    = {{Bildungsmedien für Erwachsene Educational Media for Adults }},
  editor       = {{Andrzejewska, Ewa and Matthes, Eva and Schütze, Sylvia and Van Wiele, Jan}},
  isbn         = {{978-3-7815-2670-9}},
  pages        = {{(pp. 245–255)}},
  publisher    = {{Verlag Julius Klinkhardt}},
  title        = {{{Which Media for Whom? The Implementation of Microgrids as a Trigger of Transformational Adult Learning Opportunities in Formal, Informal and Situational Settings in Times of Change}}},
  doi          = {{10.35468/6126}},
  year         = {{2024}},
}

@inproceedings{56655,
  author       = {{Müller, Laura and Schultz, Andreas Maximilian and Altun, Osman and Uhe, Johanna and Koepler, Oliver and Auer, Soeren and Mozgova, Iryna}},
  booktitle    = {{Proceedings of NordDesign 2024}},
  pages        = {{514--520}},
  publisher    = {{The Design Society}},
  title        = {{{Requirements Analysis of a Research Data Management System in Collaborative Projects}}},
  doi          = {{10.35199/norddesign2024.55}},
  year         = {{2024}},
}