@inbook{55086, abstract = {{Wir beschreiben den Versuch, »Verständigungskompetenzen« im Sinne von Ludwig Huber in der Graduiertenförderung zu entwickeln. Verständigung ist für Huber integraler Bestandteil wissenschaftlicher Erkenntnis. Wissenschaftler:in- nen werden aber in die Praktiken ihrer Disziplin hineinsozialisiert; die dabei entstehen- de disziplinäre Identität und ihre Selbstverständlichkeiten sind zentral für Teilhabe am Wissenschaftssystem. Das erschwert Verständigung prinzipiell, insbesondere das Nach- vollziehen der Wahrnehmungen und Sinnkonstruktionen der Adressat:innen des eige- nen Wissenschaftshandelns. Ausgehend von der Beobachtung, dass Doktorand:innen ihre Disziplin als selbstverständlichen Zugang zum Gegenstand betrachten, stellen wir das Konzept einer Sommerschule vor, das darauf zielt, die Abstraktion von der eigenen disziplinären Perspektive zu ermöglichen, Systemwissen fördert und Verständigungs- prozesse anstößt.}}, author = {{Jenert, Tobias and Scharlau, Ingrid}}, booktitle = {{Wissenschaftsdidaktik IV: Wissenschaftskommunikation}}, editor = {{Reinmann, Gabi and Rhein, Rüdiger}}, isbn = {{ 978-3-8376-6297-9 }}, keywords = {{science communication, Wissenschaftskommunikation, Wissenschaftsdidaktik, young researchers, Nachwuchsförderung}}, pages = {{161--184}}, publisher = {{transcript}}, title = {{{Interdisziplinäre Verständigung als Baustein wissenschaftsdidaktischer Kompetenz}}}, year = {{2024}}, } @inproceedings{55336, abstract = {{Predicting the remaining useful life of technical systems has gained significant attention in recent years due to increasing demands for extending the lifespan of degrading system components. Therefore, already used systems are retrofitted by integrating sensors to monitor their performance and functionality, enabling accurate diagnosis of their condition and prediction of their remaining useful life. One of the main challenges in this field is identified in the missing data from the time where the retrofitted system has already run but without being monitored by sensors. In this paper, a novel approach for the combined diagnostics and prognostics of retrofitted systems is proposed. The methodology aims to provide an accurate diagnosis of the system’s health state and estimation of the remaining useful life by a combination of a machine learning and expert knowledge. To evaluate the effectiveness of the proposed methodology, a case study involving a retrofitted system in an industrial setting is selected and applied. It is demonstrated that the approach effectively diagnose the current system’s health state and accurately predict its remaining useful life, thereby enabling predictive maintenance and decision-making. Overall, our research contributes to advancing the field of condition monitoring for retrofitted systems by providing a comprehensive methodology that addresses the challenge of missing data.}}, author = {{Bender, Amelie and Aimiyekagbon, Osarenren Kennedy and Sextro, Walter}}, booktitle = {{Proceedings of the 2024 Prognostics and System Health Management Conference (PHM)}}, isbn = {{979-8-3503-6058-5}}, keywords = {{retrofit, diagnosis, prognostics, RUL prediction, missing data, ball bearings}}, location = {{Stockholm, Schweden}}, publisher = {{IEEE Computer Society}}, title = {{{Diagnostics and Prognostics for Retrofitted Systems: A Comprehensive Approach for Enhanced System Health Assessment}}}, doi = {{10.1109/PHM61473.2024.00038}}, year = {{2024}}, } @article{55368, abstract = {{AbstractA comprehensive investigation of the potential of aqueous glucosamine solutions as an eco‐friendly solvent for CO2 capture was performed. It includes an experimental study in a pilot plant setup and a theoretical analysis with a rate‐based model. The model was validated against the measured column profiles of temperature and CO2 concentration in both liquid and gas phases. Model‐based parameter sensitivity studies revealed inherent challenges for an effective absorption process. A slow reaction rate and suboptimal chemical equilibrium conditions were identified as key limitations, restricting the absorption efficiency and CO2 loading capacity of the glucosamine solution. Furthermore, an analysis of the dissociation constant of this novel absorbent was performed and its significance with respect to the (limited) performance, capability, and efficiency evaluation was highlighted.}}, author = {{Hami Dindar, Iman and Lutters, Nicole and Kenig, Eugeny Y.}}, issn = {{0001-1541}}, journal = {{AIChE Journal}}, publisher = {{Wiley}}, title = {{{Carbon dioxide capture by aqueous glucosamine solutions: Pilot plant measurements and a theoretical study}}}, doi = {{10.1002/aic.18541}}, year = {{2024}}, } @inbook{52252, author = {{Tophinke, Doris and Dübbert, Alexander}}, booktitle = {{Konstruktionsgrammatik X. Textsorten und Textmuster als Konstruktionen?}}, editor = {{Stumpf, Sören and Stein, Stephan}}, isbn = {{978-3-95809-171-9}}, pages = {{89--112}}, publisher = {{Stauffenburg}}, title = {{{„4 THe BoYZ“ – Widmungen im Szene-Graffiti aus konstruktionsgrammatischer Perspektive. Eine multimodale Relator-Konstruktion als grammatische Musterbildung im Horizont des Textes}}}, year = {{2024}}, } @inproceedings{55431, author = {{Gräßler, Iris and Özcan, Deniz}}, booktitle = {{Automation 2024}}, isbn = {{9783181024379}}, pages = {{363–374}}, publisher = {{VDI Verlag}}, title = {{{Anwendungspotenziale von Künstlicher Intelligenz im Model-Based Systems Engineering für automatisierte Systeme}}}, doi = {{10.51202/9783181024379-363}}, volume = {{2437}}, year = {{2024}}, } @inproceedings{55944, author = {{Sylvi, Mauermeister and Julia, Brose and Bettina, Langfeldt and Isabel, Steinhardt and Nicolai, Götze}}, location = {{Frankfurt/Main}}, pages = {{193--208}}, title = {{{Evaluieren und Publizieren?}}}, doi = {{10.36197/DUZOPEN.031}}, year = {{2024}}, } @inbook{56001, author = {{Brennecken, Dominik and Rösler, Margit}}, booktitle = {{Women in Analysis and PDE}}, editor = {{Chatzakou, Marianna and Ruzhansky, Michael and Stoeva, Diana}}, isbn = {{978-3-031-57004-9}}, pages = {{425}}, publisher = {{Birkhäuser Cham}}, title = {{{The Laplace transform in Dunkl theory}}}, volume = {{5}}, year = {{2024}}, } @article{56022, author = {{Häsel-Weide, Uta and Wallner, Melina}}, journal = {{Journal für Mathematik-Didaktik}}, number = {{2}}, title = {{{Achsensymmetrisch?! Praktiken, soziale und sozio-mathematische Normen der Begründung der Achsensymmetrie ebener Figuren in der Grundschule}}}, doi = {{https://doi.org/10.1007/s13138-024-00241-9}}, volume = {{45}}, year = {{2024}}, } @inproceedings{54522, abstract = {{The importance of extreme weather situations is increasing due to their number and, above all, their impact on stakeholders in emergency response. They are characterized by cascading effects with global and local interdependencies. Extreme data must be included as a basis for decision-making. The impact in emergency response depends on diverse, multidisciplinary competencies required to interpret information. Scenarios are used in various forms of preparation: in exercises, but also for the design of information systems and validation. Based on literature, this article brings together different types of scenarios and related work in the field of Model-Based Systems Engineering. Using an exemplary case relating to possible pluvial urban floods, the added value resulting from a focus on the impact of innovative solutions is discussed. It is shown that the use of scenarios helps to make the desired impact assessable for decision-makers in all phases of research and development projects.}}, author = {{Pottebaum, Jens and Ebel, Marcel and Gräßler, Iris}}, booktitle = {{Proceedings of the 21st ISCRAM Conference (ISCRAM 2024)}}, editor = {{Penkert, Berthold and Hellingrath, Bernd and Rode, Monika and Widera, Adam and Middelhoff, Michael and Boersma, Kees and Kalthöner, Matthias}}, location = {{Münster}}, publisher = {{ISCRAM}}, title = {{{Uncovering Impact of Innovation: Continuous Stakeholder Engagement through Scenario-based Systems Engineering}}}, doi = {{10.5281/ZENODO.11298332}}, year = {{2024}}, } @inproceedings{56072, abstract = {{Weather-induced emergencies are characterized by underlying weather phenomena, their evolution in time and space as well as their impact on the environment including people, nature and infrastructure. Typically, simulations are used to consider a variety of potential extreme weather scenarios in preparedness phases. Due to required computing power, duration and high efforts in parameterizing such tools are hardly used within response situations. Enhanced simulation models and surrogate models based on machine learning technologies carry potentials to overcome these challenges. An approach is presented that adopts simulation for the case of flooding events. It considers all phases from demand situation in command posts through advanced parameter space exploration to advanced visualization of simulation results in Augmented Reality. Initial evaluation results are presented, complemented by conclusions on incorporated technologies. The results contribute to future adoption of simulation even in time-critical response situations.}}, author = {{Pottebaum, Jens and Ebel, Marcel and Gräßler, Iris}}, booktitle = {{Mensch und Computer 2024 - Workshopband}}, keywords = {{extreme weather, emergency response, simulation, Augmented Reality}}, location = {{Karlsruhe}}, publisher = {{Gesellschaft für Informatik e.V.}}, title = {{{Extending the application of simulation from preparedness to response use cases in weather-induced emergencies}}}, doi = {{10.18420/muc2024-mci-ws13-209}}, year = {{2024}}, } @inproceedings{56087, author = {{Beule, Felix and Teutenberg, Dominik and Meschut, Gerson}}, booktitle = {{The 16th International Conference on the Science and Technology of Adhesion and Adhesives}}, location = {{Oxford, UK}}, title = {{{Numerical modelling of the influence of viscous fingering on the mechanical properties of structural adhesive joints}}}, year = {{2024}}, } @article{56212, abstract = {{AbstractTo increase the quality of computational results for heterogeneous materials like fiber‐reinforced composites with Prandtl–Reuss‐type material laws, goal‐oriented measures of the adaptive finite element method coupled to model adaptivity is established. The former is an adaptive mesh refinement on the macroscale, which allows to control the spatial discretization errors. The latter is an efficient combination of a numerically low cost nonuniform transformation field analysis (NTFA) and numerically high cost full‐field elasto‐plastic homogenization methods on the microscale. The present contribution deals with the application of the concept of downwind and upwind approximations to a goal‐oriented a posteriori error estimator based on duality techniques by means of reduced order homogenization schemes like NTFA, and with accuracy and numerical efficiency of the proposed goal‐oriented adaptive framework. NTFA consists of an offline phase and an online phase. During the offline phase, some relevant information of the micro system under consideration is precomputed allowing a reduced set of equations to be solved in the online phase. Thus, NTFA leads to a quite efficient homogenization method but less accurate compared to the full‐field homogenization method which is characterized with a high computational demand for accounting nonlinear microstructural mechanisms. Due to nonlinearities and time‐dependency of plasticity, the estimation of error transport and error generation are 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. Several numerical examples illustrate the effectiveness of the proposed adaptive approach based on downwind and upwind approximations.}}, author = {{Tchomgue Simeu, Arnold and Mahnken, Rolf}}, issn = {{1617-7061}}, journal = {{PAMM}}, publisher = {{Wiley}}, title = {{{Mesh‐ and model adaptivity for NTFA and full‐field elasto‐plastic homogenization based on downwind and upwind approximations}}}, doi = {{10.1002/pamm.202400074}}, year = {{2024}}, } @inproceedings{56194, author = {{Afsahnoudeh, Reza and Riese, Julia and Kenig, Eugeny Y.}}, booktitle = {{World Congress on Mechanical, Chemical, and Material Engineering}}, issn = {{2369-8136}}, location = {{Barcelona}}, publisher = {{Avestia Publishing}}, title = {{{A Numerical Analysis of Thermo-Hydraulic Performance of Pillow-Plate Heat Exchangers with Ellipsoidal Secondary Structures}}}, doi = {{10.11159/htff24.145}}, year = {{2024}}, } @inproceedings{56207, abstract = {{We present a data acquisition and visualization pipeline that allows experts to monitor additive manufacturing processes, in particular laser metal deposition with wire (LMD-w) processes, in immersive virtual reality. Our virtual environment consists of a digital shadow of the LMD-w production site enriched with additional measurement data shown on both static as well as handheld virtual displays. Users can explore the production site by enhanced teleportation capabilities that enable them to change their scale as well as their elevation above the ground plane. In an exploratory user study with 22 participants, we demonstrate that our system is generally suitable for the supervision of LMD-w processes while generating low task load and cybersickness. Therefore, it serves as a first promising step towards the successful application of virtual reality technology in the comparatively young field of additive manufacturing.}}, author = {{Rupp, Daniel and Kuhlen, Torsten W. and Rarbach, Sven and Wiechel, Dominik and Pottebaum, Jens and Weidemann, Tizia and Tran, Duc Thanh and Day, Robin and Zielinski, Jonas and König, Valentina and Bremer, Jan and Kosche, Thomas and Grimm, Andreas and Bergs, Thomas and Gräßler, Iris and Weissker, Tim}}, booktitle = {{Proceedings of the GI VR/AR Workshop 2024}}, location = {{Hamburg}}, publisher = {{Gesellschaft für Informatik e.V.}}, title = {{{Virtual Reality as a Tool for Monitoring Additive Manufacturing Processes via Digital Shadows}}}, doi = {{10.18420/vrar2024_0006}}, year = {{2024}}, } @inproceedings{56108, abstract = {{AbstractEngineering projects for complex technical systems such as automobiles demand extensive requirement specifications and corresponding hierarchy levels in system architectures. Especially when considering emergent phenomena, such as total weight or aerodynamics, a closely networked collaboration of discipline‐specific and cross‐disciplinary roles is required. Further, in large organizations with a group structure, resulting functional and non‐functional contents need to be managed by distinct Systems Engineering roles. For example, the role “property manager” takes care of achieving overarching product properties, such as weight or aerodynamics, which cannot be directly fixed, but result from many specifications. This paper proposes new Systems Engineering roles and their application in a German Original Equipment Manufacturer (OEM). For validation, the roles have already been applied in everyday engineering projects at the OEM. The concept proved to be indispensable and transferable to other Systems Engineering projects.}}, author = {{Gräßler, Iris and Pfeifer, Jan Niklas and Hintz, Florian and Meyrl, Nicolas}}, booktitle = {{INCOSE International Symposium}}, issn = {{2334-5837}}, keywords = {{Systems Engineering roles, properties, features, emergent phenomena, automotive}}, location = {{Dublin, Ireland}}, number = {{1}}, pages = {{584--598}}, publisher = {{Wiley}}, title = {{{Systems Engineering roles to handle emergent properties and behaviors in complex technical systems}}}, doi = {{10.1002/iis2.13164}}, volume = {{34}}, year = {{2024}}, } @inbook{56135, author = {{Schröer, Franz and Reis, Oliver and Kruse, Iris and Rohlfing, Katharina}}, booktitle = {{Inklusion verstehen. Szenen aus dem Unterricht in interdisziplinärer Reflexion}}, isbn = {{9783170430259}}, pages = {{181--185}}, publisher = {{W. Kohlhammer GmbH}}, title = {{{Das Forschungsprojekt im Spiegel praxistheoretischer inklusionsbezogener Unterrichtsforschung}}}, doi = {{10.17433/978-3-17-043025-9}}, year = {{2024}}, } @article{54281, abstract = {{AbstractPolycarbonate (PC) is an amorphous polymer that is an extremely robust material with a high tenacity, and thus suitable for a lightweight construction with glass‐like transparency. Due to these advantageous properties, PC is often used in industry for example in medical devices, automotive headlamps, sporting equipment, electronics, and a variety of other products. PC is often subjected to uniaxial and biaxial loading conditions. Therefore, reliable material models have to take into account the various resulting experimental effects. For those reasons, we investigate PC specimens under uniaxial and biaxial loading by using different stretch rates and loading scenarios. In addition to that, we propose methods for optical measurement of local stretches to obtain the approximated local true stress. In future work, the displacement fields and the resulting reaction forces will be used for parameter identification of constitutive equations.}}, author = {{Hamdoun, Ayoub and Mahnken, Rolf}}, issn = {{1617-7061}}, journal = {{PAMM}}, publisher = {{Wiley}}, title = {{{Experimental investigations of uniaxial and biaxial cold stretching within PC‐films and bars using optical measurements}}}, doi = {{10.1002/pamm.202300114}}, year = {{2024}}, } @article{54279, author = {{Hamdoun, Ayoub and Mahnken, Rolf}}, issn = {{0032-3861}}, journal = {{Polymer}}, publisher = {{Elsevier BV}}, title = {{{Uniaxial and biaxial experimental investigation of glassy polymers}}}, doi = {{10.1016/j.polymer.2024.126981}}, volume = {{299}}, year = {{2024}}, } @article{54280, abstract = {{AbstractCold forming of polycarbonate films results in the formation of shear bands in the necking zone. The numerical results obtained from standard viscoplastic material models exhibit mesh size dependency, requiring mathematical regularization. For this purpose, we present in this work a large deformation gradient theory for a viscoplastic isotropic material model published before. We extend our model to a micromorphic model by introducing a new micromorphic variable as an additional degree of freedom along with its first gradient. This variable represents a microequivalent plastic strain. The relation between the macroequivalent plastic strain and the micromorphic variable is accomplished by a micromorphic coupling modulus. This coupling forces proximity between the macro- and microvariables, leading to the targeted regularization effect. The micromorphic model is implemented as a three-dimensional initial boundary value problem in an in-house finite element tool. The analysis is performed for both uniaxial and biaxial specimens. The provided numerical examples show the ability of our model to regularize shear bands within the specimens and address the issue of localization.}}, author = {{Hamdoun, Ayoub and Mahnken, Rolf}}, issn = {{0939-1533}}, journal = {{Archive of Applied Mechanics}}, number = {{5}}, pages = {{1221--1242}}, publisher = {{Springer Science and Business Media LLC}}, title = {{{A large deformation gradient theory for glassy polymers by means of micromorphic regularization}}}, doi = {{10.1007/s00419-024-02570-0}}, volume = {{94}}, year = {{2024}}, } @inbook{56299, author = {{Schultz, Andreas Maximilian and Dotzki, Fabian and Eisenbach, Thomas and Mozgova, Iryna}}, booktitle = {{Next Chapter in Mobility}}, isbn = {{9783658426460}}, location = {{Duisburg}}, publisher = {{Springer Fachmedien Wiesbaden}}, title = {{{Sicherheit bei Großveranstaltungen – Mobilitätsverhalten und Personenströme im Fokus}}}, doi = {{10.1007/978-3-658-42647-7_54}}, year = {{2024}}, }