@article{41515, author = {{Pramanik, Sudipta and Tasche, Lennart and Hoyer, Kay-Peter and Schaper, Mirko}}, issn = {{2214-8604}}, journal = {{Additive Manufacturing}}, keywords = {{Industrial and Manufacturing Engineering, Engineering (miscellaneous), General Materials Science, Biomedical Engineering}}, publisher = {{Elsevier BV}}, title = {{{Investigating the microstructure of an additively manufactured FeCo alloy: an electron microscopy study}}}, doi = {{10.1016/j.addma.2021.102087}}, volume = {{46}}, year = {{2021}}, } @article{46009, author = {{Hu, Jie and Jiang, Daochuan and Weng, Zhaoyue and Pan, Ying and Li, Zhongjun and Du, Haiwei and Yuan, Yupeng}}, issn = {{1385-8947}}, journal = {{Chemical Engineering Journal}}, keywords = {{Industrial and Manufacturing Engineering, General Chemical Engineering, Environmental Chemistry, General Chemistry}}, publisher = {{Elsevier BV}}, title = {{{A universal electrochemical activation enabling lattice oxygen activation in nickel-based catalyst for efficient water oxidation}}}, doi = {{10.1016/j.cej.2021.132736}}, volume = {{430}}, year = {{2021}}, } @article{51199, abstract = {{AbstractRecent developments in automotive and aircraft industry towards a multi-material design pose challenges for modern joining technologies due to different mechanical properties and material compositions of various materials such as composites and metals. Therefore, mechanical joining technologies like clinching are in the focus of current research activities. For multi-material joints of metals and thermoplastic composites thermally assisted clinching processes with advanced tool concepts are well developed. The material-specific properties of fibre-reinforced thermoplastics have a significant influence on the joining process and the resulting material structure in the joining zone. For this reason, it is important to investigate these influences in detail and to understand the phenomena occurring during the joining process. Additionally, this provides the basis for a validation of a numerical simulation of such joining processes. In this paper, the material structure in a joint resulting from a thermally assisted clinching process is investigated. The joining partners are an aluminium sheet and a thermoplastic composite (organo sheet). Using computed tomography enables a three-dimensional investigation that allows a detailed analysis of the phenomena in different joining stages and in the material structure of the finished joint. Consequently, this study provides a more detailed understanding of the material behavior of thermoplastic composites during thermally assisted clinching.}}, author = {{Gröger, Benjamin and Köhler, Daniel and Vorderbrüggen, Julian and Troschitz, Juliane and Kupfer, Robert and Meschut, Gerson and Gude, Maik}}, issn = {{0944-6524}}, journal = {{Production Engineering}}, keywords = {{Industrial and Manufacturing Engineering, Mechanical Engineering}}, number = {{2-3}}, pages = {{203--212}}, publisher = {{Springer Science and Business Media LLC}}, title = {{{Computed tomography investigation of the material structure in clinch joints in aluminium fibre-reinforced thermoplastic sheets}}}, doi = {{10.1007/s11740-021-01091-x}}, volume = {{16}}, year = {{2021}}, } @phdthesis{21209, abstract = {{Die additive Fertigung mittels Laser Powderbed Fusion Verfahren (L-PBF) von Metallen wird zunehmend genutzt, um Funktionsbauteile endkonturnah zu fertigen. Die in der vor-liegenden Arbeit untersuchte Parameter- und Prozessoptimierung liefert einen Beitrag zur wirtschaftlichen Nutzung des L-PBF und zeigt, dass höhere Aufbauraten bei der ganzheit-lichen Betrachtung des Prozesses realisierbar sind. Die Parameter- und Prozessoptimierung erfordert eine Untersuchung des Einflusses der Fertigungs- und Nachbearbeitungsparameter auf das erzeugte Volumen sowie auf die Mikrostruktur und die resultierenden Materialeigenschaften. Das Ziel der vorliegenden Arbeit ist die Entwicklung einer optimierten Prozessführung mit abschließender Bewer-tung der Wirtschaftlichkeit. Mit dem entwickelten Gesamtprozess wird eine um den Faktor 1,6 höhere Aufbaurate erzielt. Des Weiteren wird die Methodik zur Erarbeitung des opti-mierten Prozessfensters beschrieben, sodass die Herangehensweise auf weitere Werk-stoffe angewendet werden kann. Die mechanischen Eigenschaften werden für den stati-schen und dynamischen Lastfall untersucht und mit der Mikrostruktur korreliert. Abschlie-ßend wird die Prozessoptimierung zur Fertigung eines Demonstrators eingesetzt und wirtschaftlich validiert. Die Ergebnisse zeigen, dass durch das hier angewendete Vorge-hen eine Prozesszeitreduktion von 22,5% und eine Kostenreduktion von 11% realisiert werden kann.}}, author = {{Ahlers, Dominik}}, isbn = {{978-3844074246}}, keywords = {{Additive Manufacturing, SLM}}, pages = {{137}}, publisher = {{Shaker}}, title = {{{Parameter- und Prozessoptimierung für den additiven Fertigungsprozess im Pulverbett am Beispiel der Legierung Ti6Al4V }}}, volume = {{19}}, year = {{2020}}, } @article{34115, author = {{Haake, Claus-Jochen and Trockel, Walter}}, issn = {{0943-0180}}, journal = {{Homo Oeconomicus}}, keywords = {{Industrial and Manufacturing Engineering, Environmental Engineering}}, number = {{1-2}}, pages = {{1--6}}, publisher = {{Springer Science and Business Media LLC}}, title = {{{Introduction to the Special Issue “Bargaining”}}}, doi = {{10.1007/s41412-020-00104-x}}, volume = {{37}}, year = {{2020}}, } @article{35580, author = {{Schulze Darup, Moritz}}, issn = {{1049-8923}}, journal = {{International Journal of Robust and Nonlinear Control}}, keywords = {{Electrical and Electronic Engineering, Industrial and Manufacturing Engineering, Mechanical Engineering, Aerospace Engineering, Biomedical Engineering, General Chemical Engineering, Control and Systems Engineering}}, number = {{11}}, pages = {{4168--4187}}, publisher = {{Wiley}}, title = {{{Encrypted polynomial control based on tailored two‐party computation}}}, doi = {{10.1002/rnc.5003}}, volume = {{30}}, year = {{2020}}, } @article{35585, author = {{Lu, Jingyi and Leong, Alex S. and Quevedo, Daniel E.}}, issn = {{1049-8923}}, journal = {{International Journal of Robust and Nonlinear Control}}, keywords = {{Electrical and Electronic Engineering, Industrial and Manufacturing Engineering, Mechanical Engineering, Aerospace Engineering, Biomedical Engineering, General Chemical Engineering, Control and Systems Engineering}}, number = {{11}}, pages = {{4205--4224}}, publisher = {{Wiley}}, title = {{{Optimal event‐triggered transmission scheduling for privacy‐preserving wireless state estimation}}}, doi = {{10.1002/rnc.4910}}, volume = {{30}}, year = {{2020}}, } @article{47579, abstract = {{AbstractDie chemische Industrie sieht sich mit gravierenden Herausforderungen konfrontiert: Die Einhaltung der Klimaschutzziele, die Auswirkungen der Energiewende und die zunehmende Bedeutung der Kreislaufwirtschaft treffen die gesamte Wertschöpfungskette. Lösungsansätze von der Prozess‐ über die Apparateebene bis hin zum Einzelphänomen sind notwendig, um die Wettbewerbsfähigkeit dieses zentralen Industriezweigs zu erhalten. In diesem Beitrag werden aktuelle Entwicklungen und zukünftige Handlungsfelder in der Trenntechnik, die für diese Herausforderungen wertvolle Beiträge leisten können, dargestellt.}}, author = {{Riese, Julia and Hoff, Andreas and Stock, Jürgen and Górak, Andrzej and Grünewald, Marcus}}, issn = {{0009-286X}}, journal = {{Chemie Ingenieur Technik}}, keywords = {{Industrial and Manufacturing Engineering, General Chemical Engineering, General Chemistry}}, number = {{7}}, pages = {{818--830}}, publisher = {{Wiley}}, title = {{{Separation Units 4.0 – Trennapparate heute und morgen}}}, doi = {{10.1002/cite.202000032}}, volume = {{92}}, year = {{2020}}, } @article{47572, abstract = {{AbstractDue to high energy‐intensive processes and a dependence on carbon‐based materials, the process industry plays a major role in climate change. Therefore, the substitution of fossil resources by bio‐based resources is indispensable. This leads to challenges arising from accompanying changes of the type, amount and location of resources. At the same time, transformable production systems are currently in the focus of research addressing the required flexibility. These systems which consist of modular production and logistics units offer the possibility to adapt flexibly in volatile conditions within dynamic supply chains. Hence, this work compiles elements for environmental sustainability, which minimize the carbon footprint in the process industry: transformable production systems, the utilization of bio‐based resources, carbon dioxide and renewable energy as well as the application of these elements in decentral production networks. Finally, possible use cases are determined based on the combination of these elements through a multi‐criteria analysis.}}, author = {{Pannok, Maik and Finkbeiner, Marco and Fasel, Henrik and Riese, Julia and Lier, Stefan}}, issn = {{2196-9744}}, journal = {{ChemBioEng Reviews}}, keywords = {{Industrial and Manufacturing Engineering, Filtration and Separation, Process Chemistry and Technology, Biochemistry, Chemical Engineering (miscellaneous), Bioengineering}}, number = {{6}}, pages = {{216--228}}, publisher = {{Wiley}}, title = {{{Transformable Decentral Production for Local Economies with Minimized Carbon Footprint}}}, doi = {{10.1002/cben.202000008}}, volume = {{7}}, year = {{2020}}, } @article{47578, abstract = {{AbstractThe change in process industry from fossil resources to alternative feedstock is indispensable due to the scarcity of resources and global warming. This leads to new challenges for the production systems. On the market side, rapid innovation is accompanied by shorter product life cycles leading to an increasing uncertainty of demand in terms of product type, volume and location. Therefore, the following five elements are combined into a concept to address these challenges: transformable production systems, local bio‐based resources, CO2 as feedstock, renewable energy and decentral production network with local economies.}}, author = {{Finkbeiner, Marco and Pannok, Maik and Fasel, Henrik and Riese, Julia and Lier, Stefan}}, issn = {{0009-286X}}, journal = {{Chemie Ingenieur Technik}}, keywords = {{Industrial and Manufacturing Engineering, General Chemical Engineering, General Chemistry}}, number = {{12}}, pages = {{2041--2045}}, publisher = {{Wiley}}, title = {{{Modular Production with Bio‐Based Resources in a Decentral Production Network}}}, doi = {{10.1002/cite.202000072}}, volume = {{92}}, year = {{2020}}, } @article{47574, abstract = {{AbstractIn this paper, a newly designed distillation column consisting of a wetted wall with a rectangular cross section is analyzed and compared with a conventional packed column with regard to the operating range of both apparatuses. As expected, the pressure drop is considerably lower in the wetted‐wall column and, therefore, it offers a higher range of operation. However, in the wetted‐wall column, the separation efficiency decreases rapidly with increasing F factors. This effect can be overcome by the serial connection of two wetted‐wall columns.}}, author = {{Reitze, Arnulf and Grünewald, Marcus and Riese, Julia}}, issn = {{0009-286X}}, journal = {{Chemie Ingenieur Technik}}, keywords = {{Industrial and Manufacturing Engineering, General Chemical Engineering, General Chemistry}}, number = {{12}}, pages = {{1968--1975}}, publisher = {{Wiley}}, title = {{{Comparison of the Operating Range of a Wetted‐Wall Column with a Packed Column for Distillation}}}, doi = {{10.1002/cite.202000065}}, volume = {{92}}, year = {{2020}}, } @article{47577, abstract = {{AbstractThis study presents a new and innovative sieve tray design for a more flexible operation of separation columns in terms of possible throughput. The advantage of this new tray design is to ensure an optimal operation for varying feed flow rates and constant separation efficiencies for different load ranges. The aim of this work is to give a short introduction and an outlook to the investigation of the functionality of the designed trays. Moreover, the general design of the new trays, first results for CFD simulations of the dry pressure drop and the experimental setup are presented.}}, author = {{Fasel, Henrik and Grünewald, Marcus and Riese, Julia}}, issn = {{0009-286X}}, journal = {{Chemie Ingenieur Technik}}, keywords = {{Industrial and Manufacturing Engineering, General Chemical Engineering, General Chemistry}}, number = {{12}}, pages = {{2035--2040}}, publisher = {{Wiley}}, title = {{{New Column Design to Enhance Flexibility: Concept for Hydrodynamic Characterization}}}, doi = {{10.1002/cite.202000055}}, volume = {{92}}, year = {{2020}}, } @article{47575, abstract = {{AbstractDue to the increasing share of renewable energies in the power sector, the need for energy storage and flexible performance is rising. This study provides an in‐depth investigation of the flexibility of a Power‐to‐Gas plant for the production of synthetic natural gas. Model‐based analysis is conducted for the individual technologies PEM electrolysis, MEA absorption and fixed‐bed methanation as well as for the continuously operated process. This study reveals that the Power‐to‐Gas plant offers a capacity flexibility of 87–125 %, corresponding to 4.79–6.88 MW electrical input power.}}, author = {{Herrmann, Felix and Grünewald, Marcus and Riese, Julia}}, issn = {{0009-286X}}, journal = {{Chemie Ingenieur Technik}}, keywords = {{Industrial and Manufacturing Engineering, General Chemical Engineering, General Chemistry}}, number = {{12}}, pages = {{1983--1991}}, publisher = {{Wiley}}, title = {{{Flexibility of Power‐to‐Gas Plants: A Case Study}}}, doi = {{10.1002/cite.202000063}}, volume = {{92}}, year = {{2020}}, } @article{47573, abstract = {{AbstractFlexibility receives increased interest in chemical engineering and is discussed as one measure to deal with upcoming challenges for the chemical industry. In this paper, different types of flexibility are presented, and flexibility needs are illustrated. The focus is on the evaluation and classification of available solutions to enhance flexibility. Solutions and future challenges across all length scales of chemical engineering are discussed: from tailored catalyst properties to decoupling of processes by means of storage.}}, author = {{Riese, Julia and Grünewald, Marcus}}, issn = {{0009-286X}}, journal = {{Chemie Ingenieur Technik}}, keywords = {{Industrial and Manufacturing Engineering, General Chemical Engineering, General Chemistry}}, number = {{12}}, pages = {{1887--1897}}, publisher = {{Wiley}}, title = {{{Challenges and Opportunities to Enhance Flexibility in Design and Operation of Chemical Processes}}}, doi = {{10.1002/cite.202000057}}, volume = {{92}}, year = {{2020}}, } @article{47576, abstract = {{AbstractA method is proposed to evaluate capacity potentials in continuously operated chemical processes. In the main part of the analysis, the operating windows of the equipment are examined based on detailed steady‐state simulations. The method is applied to a case study of the production process of ethylene oxide as a large‐scale commodity chemical. Results show the limitations continuously operated processes are confronted with. However, opportunities to enlarge or shift the operating window of apparatuses applied are determined.}}, author = {{Bruns, Bastian and Grünewald, Marcus and Riese, Julia}}, issn = {{0009-286X}}, journal = {{Chemie Ingenieur Technik}}, keywords = {{Industrial and Manufacturing Engineering, General Chemical Engineering, General Chemistry}}, number = {{12}}, pages = {{2005--2015}}, publisher = {{Wiley}}, title = {{{Analysis of Capacity Potentials in Continuously Operated Chemical Processes}}}, doi = {{10.1002/cite.202000053}}, volume = {{92}}, year = {{2020}}, } @article{32490, author = {{Gonchikzhapov, Munko and Kasper, Tina}}, issn = {{0888-5885}}, journal = {{Industrial & Engineering Chemistry Research}}, keywords = {{Industrial and Manufacturing Engineering, General Chemical Engineering, General Chemistry}}, number = {{18}}, pages = {{8551--8561}}, publisher = {{American Chemical Society (ACS)}}, title = {{{Decomposition Reactions of Fe(CO)5, Fe(C5H5)2, and TTIP as Precursors for the Spray-Flame Synthesis of Nanoparticles in Partial Spray Evaporation at Low Temperatures}}}, doi = {{10.1021/acs.iecr.9b06667}}, volume = {{59}}, year = {{2020}}, } @article{46008, author = {{Pan, Ying and Ren, Hangjuan and Chen, Ruizhe and Wu, Yanfang and Chu, Dewei}}, issn = {{1385-8947}}, journal = {{Chemical Engineering Journal}}, keywords = {{Industrial and Manufacturing Engineering, General Chemical Engineering, Environmental Chemistry, General Chemistry}}, publisher = {{Elsevier BV}}, title = {{{Enhanced electrocatalytic oxygen evolution by manipulation of electron transfer through cobalt-phosphorous bridging}}}, doi = {{10.1016/j.cej.2020.125660}}, volume = {{398}}, year = {{2020}}, } @phdthesis{24753, abstract = {{Polymer Laser Sintering (LS) is one of the most used Additive Manufacturing (AM) technologies for the tool-less production of polymer parts. The raw material is a polymer powder which is melted layerwise by the use of laser energy. Especially for the production of single parts, small series, individualized and complex structures, the technology is yet established in few branches. However, inhomogeneous and hardly controllable thermal effects during manufacturing limit the build reproducibility. The present work focuses on temperatures within so-called part cakes, their time dependency and their influence on process quality. Therefore, a temperature measurement system is implemented into a commercial laser sintering machine. Based on the experimental data a model to simulate heat transfer within part cakes is set up. Individual thermal histories during processing are successfully correlated with position dependent powder ageing effects. Another focus is on the analysis of a recycling optimized material. First results of correlations between thermal histories and part properties are shown in order to provide an outlook to further research. The data and knowledge gained through this work can be used to understand thermal effects in greater depth and to increase the process quality via optimizations.}}, author = {{Josupeit, Stefan}}, isbn = {{978-3-8440-6720-0}}, keywords = {{Additive Manufacturing, Polymer Laser Sintering, Polymer Science}}, pages = {{178}}, publisher = {{Shaker Verlag GmbH}}, title = {{{On the Influence of Thermal Histories within Part Cakes on the Polymer Laser Sintering Process}}}, volume = {{11}}, year = {{2019}}, } @inproceedings{9270, abstract = {{As 5G and network function virtualization (NFV) are maturing, it becomes crucial to demonstrate their feasibility and benefits by means of vertical scenarios. While 5GPPP has identified smart manufacturing as one of the most important vertical industries, there is still a lack of specific, practical use cases. Using the experience from a large-scale manufacturing company, Weidm{\"u}ller Group, we present a detailed use case that reflects the needs of real-world manufacturers. We also propose an architecture with specific network services and virtual network functions (VNFs) that realize the use case in practice. As a proof of concept, we implement the required services and deploy them on an emulation-based prototyping platform. Our experimental results indicate that a fully virtualized smart manufacturing use case is not only feasible but also reduces machine interconnection and configuration time and thus improves productivity by orders of magnitude.}}, author = {{Schneider, Stefan Balthasar and Peuster, Manuel and Behnke, Daniel and Marcel, Müller and Bök, Patrick-Benjamin and Karl, Holger}}, booktitle = {{European Conference on Networks and Communications (EuCNC)}}, keywords = {{5g, vertical, smart manufacturing, nfv}}, publisher = {{IEEE}}, title = {{{Putting 5G into Production: Realizing a Smart Manufacturing Vertical Scenario}}}, doi = {{10.1109/eucnc.2019.8802016}}, year = {{2019}}, } @inproceedings{13292, abstract = {{Building on 5G and network function virtualization (NFV), smart manufacturing has the potential to drastically increase productivity, reduce cost, and introduce novel, flexible manufacturing services. Current work mostly focuses on high-level scenarios or emulation-based prototype deployments. Extending our previous work, we showcase one of the first cloud-native 5G verticals focusing on the deployment of smart manufacturing use cases on production infrastructure. In particular, we use the 5GTANGO service platform to deploy our developed network services on Kubernetes. For this demo, we implemented a series of cloud-native virtualized network functions (VNFs) and created suitable service descriptors. Their light-weight, stateless deployment on Kubernetes enables quick instantiation, scalability, and robustness.}}, author = {{Schneider, Stefan Balthasar and Peuster, Manuel and Hannemann, Kai and Behnke, Daniel and Müller, Marcel and Bök, Patrick-Benjamin and Karl, Holger}}, booktitle = {{IEEE Conference on Network Function Virtualization and Software Defined Networks (NFV-SDN) Demo Track}}, keywords = {{5G, NFV, Smart Manufacturing, Cloud-Native, Kubernetes}}, location = {{Dallas, TX, USA}}, publisher = {{IEEE}}, title = {{{"Producing Cloud-Native": Smart Manufacturing Use Cases on Kubernetes}}}, year = {{2019}}, }