@inproceedings{48585,
abstract = {{The use of stainless steel with high strain hardening as material for self-piercing rivets is a promising approach to shorten the manufacturing process. Due to the corrosion resistance of the material and the achieved high strength within the forming process, the heat treatment and the coating can be omitted. As the strength within the rivet material is achieved by cold forming, the strength distribution within the rivet remains intact after the manufacturing process. The aim of the contribution presented is the exploitation of the potential of this strength distribution to improve the performance of the self-piercing rivets. Therefore, the scope of the examination is on the analysis of the influence of the local strength on the deformation behaviour of the rivet during joining. While it is unfeasible to manufacture rivets with any desired strength distribution, numerical simulation offers an efficient opportunity to study the effects of varying local strengths. By using a definable true strain distribution within the rivet as presetting for the simulation, different strength distributions can be modelled. Through the simulation of the joining process, the deformation behaviour of the rivet can be examined. Based on the insights of this analysis, a strength distribution is created that supports the joining of challenging material combinations consisting of high strength steel and aluminium. Finally, the approach is verified by experimental joining tests.}},
author = {{Uhe, Benedikt and Kuball, Clara-Maria and Merklein, Marion and Meschut, Gerson}},
booktitle = {{Proceedings of the 14th International Conference on the Technology of Plasticity - Current Trends in the Technology of Plasticity.}},
editor = {{Mocellin, Katia and Bouchard, Pierre-Olivier and Bigot, Régis and Balan, Tudor}},
pages = {{64--71}},
publisher = {{Springer}},
title = {{{Controlled Rivet Deformation During Self-piercing Riveting Through a Tailored Strength Distribution Within the Rivet Material}}},
doi = {{10.1007/978-3-031-41341-4_8}},
volume = {{3}},
year = {{2023}},
}
@article{48584,
abstract = {{The sustainability of the manufacturing industry is of special importance to increase the protection of the environment. The production of fasteners like self-piercing rivets, however, is costly, time-consuming and energy-intensive. The heat treatment and the coating, which are mandatory in conventional self-piercing rivets to achieve adequate strength, ductility and corrosion resistance, are especially crucial in this respect. Within this paper, an approach for an increase in the sustainability in fastener production is presented. The use of alternative, high strain hardening stainless steels as rivet material enables a shortening of the process chain, because post treatment of the rivets after they are formed can be omitted. As the change in rivet material and processing causes some issues along the process chain, the focus of this paper is on the holistic evaluation of the challenges within the forming of high strain hardening steel and the impact of the changed rivet properties on the joining result.}},
author = {{Uhe, Benedikt and Kuball, Clara-Maria and Merklein, Marion and Meschut, Gerson}},
issn = {{2504-4494}},
journal = {{Journal of Manufacturing and Materials Processing}},
keywords = {{Industrial and Manufacturing Engineering, Mechanical Engineering, Mechanics of Materials}},
number = {{6}},
publisher = {{MDPI AG}},
title = {{{Increased Sustainability in Fastener Production with the Example of Self-Piercing Rivets}}},
doi = {{10.3390/jmmp7060193}},
volume = {{7}},
year = {{2023}},
}
@inproceedings{44220,
abstract = {{With regard to environmental protection, the sustainability of production processes is decisive. Mechanical joining technologies like self-piercing riveting are of special importance with regard to realising lightweight constructions in the automotive industry. However, the production of self-piercing rivets is costly, time-consuming and energy-intensive, as the rivets conventionally must be heat treated and coated in order to ensure an adequate strength, ductility and corrosion resistance. Within this paper, it is shown by the example of a newly established rivet manufacturing process how the sustainability of fastener production can be increased. The general approach in this context is the use of alternative, high strain hardening stainless steels as rivet material, which allows the omission of the post treatment of the rivets after forming. The shortening of the process chain enables a more sustainable rivet production. Thus, not only the energy consumption is reduced, but also costs, which is why the novel manufacturing process is also of interest from an economic point of view.}},
author = {{Uhe, Benedikt and Kuball, Clara-Maria and Merklein, Marion and Meschut, Gerson}},
location = {{Nürnberg}},
publisher = {{Materials Research Proceedings}},
title = {{{Approach for a sustainable process chain in manufacturing of fasteners for mechanical joining}}},
doi = {{10.21741/9781644902417-49}},
year = {{2023}},
}
@inproceedings{51117,
author = {{Scheidemann, Claus and Hemsel, Tobias and Friesen, Olga and Claes, Leander and Sextro, Walter}},
location = {{Jeju, Korea}},
title = {{{Influence of Temperature and Pre-Stress on the Piezoelectric Material Behavior of Ring-Shaped Ceramics}}},
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}},
}
@techreport{62687,
author = {{Gräßler, Iris and Pottebaum, Jens and Wiechel, Dominik and Rarbach, Sven and Jacobs, Georg and Höpfner, Gregor and Menninger, Bastian and Schmitz, Jan Niklas and Holland, Martin and Zeifang, Rainer and Trautheim-Hofmann, Andreas and Grasedieck, Paul and Gentili, Christian and Lüßen, Florian and Muggeo, Christian and Pfeiffer, Till and Holzer, Boris and Wendler, Svenja and Winter, Eckert and Kowalke, Daniel and Anger, Karsten and Eckert, Simon}},
publisher = {{LibreCat University}},
title = {{{ImPaKT - IKT-befähigte modellbasierte Auswirkungsanalyse in der Produktentwicklung : Schlussbericht zum BMBF-Vorhaben}}},
doi = {{10.2314/KXP:1928342884}},
year = {{2023}},
}
@inproceedings{46490,
author = {{Gräßler, Iris and Tusek, Alena Marie and Özcan, Deniz}},
booktitle = {{Automation 2023}},
isbn = {{9783181024195}},
location = {{Baden-Baden}},
pages = {{863 -- 874}},
publisher = {{VDI Verlag}},
title = {{{Entwicklung zukunftsfähiger Geschäftsmodelle in der Automatisierungstechnik anhand von Megatrends}}},
doi = {{10.51202/9783181024195-863}},
volume = {{2419}},
year = {{2023}},
}
@article{56627,
abstract = {{Pillow-plate heat exchangers (PPHEs) represent a suitable alternative to conventional shell-and-tube and plate heat exchangers. The inherent waviness of their channels promotes fluid mixing in the boundary layers and facilitates heat transfer. The overall thermo-hydraulic performance of PPHEs can further be enhanced by applying secondary surface structuring, thus increasing their competitiveness against conventional heat exchangers. In this work, various secondary structures applied on the PPHE surface were studied numerically to explore their potential to enhance near-wall mixing. Computational fluid dynamics (CFD) simulations of single-phase turbulent flow in the outer PPHE channel were performed and pressure drop, heat transfer coefficients, and overall thermo-hydraulic efficiency were determined. The simulation results clearly demonstrate a positive impact of secondary structuring on heat transfer in PPHEs.}},
author = {{Afsahnoudeh, Reza and Wortmeier, Andreas and Holzmüller, Maik and Gong, Yi and Homberg, Werner and Kenig, Eugeny}},
issn = {{1996-1073}},
journal = {{Energies}},
number = {{21}},
publisher = {{MDPI AG}},
title = {{{Thermo-Hydraulic Performance of Pillow-Plate Heat Exchangers with Secondary Structuring: A Numerical Analysis}}},
doi = {{10.3390/en16217284}},
volume = {{16}},
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}},
}
@inproceedings{46802,
author = {{Gräßler, Iris and Roesmann, Daniel and Unverzagt, Marc and Pottebaum, Jens}},
booktitle = {{Sensor and Measurement Science International (SMSI 2023)}},
location = {{Nürnberg}},
publisher = {{AMA Service}},
title = {{{Virtual Test Scenarios for Human-Centered Design with Virtual Measurement Systems}}},
doi = {{10.5162/smsi2023/p70}},
year = {{2023}},
}
@inproceedings{50742,
abstract = {{The nickel-based alloy Inconel 718, which is used in aerospace technology, poses a great
challenge to conventional machining due to its high strain hardening and toughness. Here, the laser
powder bed fusion process (LPBF) offers an alternative with potential savings if sufficiently high
productivity can be achieved. Based on the parameter study carried out, starting from the SLM
Solutions standard parameters for the manufacturing of components, exposure parameters could be
developed to realize manufacturing with 120 μm and 150 μm layer thickness, with almost the same
geometric accuracy. For this purpose, the process parameters of laser power, focus diameter, hatch
distance and scan speed were varied. The negative defocusing of the laser showed a positive effect
on the density of the parts, realizing densities ≥ 99.94 %, with high dimensional stability and good
mechanical properties. Considering the reduced manufacturing time of up to 61 %, a significant
increase in productivity was achieved.}},
author = {{Bödger, Christian and Gnaase, Stefan and Lehnert, Dennis and Tröster, Thomas}},
booktitle = {{Proceedings of the 34th Annual International Solid Freeform Fabrication Symposium – An Additive Manufacturing Conference}},
location = {{Austin}},
title = {{{Investigation of the influence of process parameters on productivity in the LPBF process for the material Inconel 718}}},
year = {{2023}},
}
@article{37200,
abstract = {{(1) This work answers the question of whether and to what extent there is a significant difference in mechanical properties when different additive manufacturing processes are applied to the material 1.2709. The Laser-Powder-Bed-Fusion (L-PBF) and Laser-Metal-Deposition (LMD) processes are considered, as they differ fundamentally in the way a part is manufactured. (2) Known process parameters for low-porosity parts were used to fabricate tensile strength specimens. Half of the specimens were heat-treated, and all specimens were tested for mechanical properties in a quasi-static tensile test. In addition, the material hardness was determined. (3) It was found that, firstly, heat treatment resulted in a sharp increase in mechanical properties such as hardness, elastic modulus, yield strength and ultimate strength. In addition to the increase in these properties, the elongation at break also decreases significantly after heat treatment. The choice of process, on the other hand, does not give either process a clear advantage in terms of mechanical properties but shows that it is necessary to consider the essential mechanical properties for a desired application.}},
author = {{Gnaase, Stefan and Niggemeyer, Dennis and Lehnert, Dennis and Bödger, Christian and Tröster, Thomas}},
issn = {{2073-4352}},
journal = {{Crystals}},
keywords = {{Inorganic Chemistry, Condensed Matter Physics, General Materials Science, General Chemical Engineering}},
number = {{2}},
publisher = {{MDPI AG}},
title = {{{Comparative Study of the Influence of Heat Treatment and Additive Manufacturing Process (LMD & L-PBF) on the Mechanical Properties of Specimens Manufactured from 1.2709}}},
doi = {{10.3390/cryst13020157}},
volume = {{13}},
year = {{2023}},
}
@article{53079,
author = {{Bierkandt, Thomas and Hemberger, Patrick and Oßwald, Patrick and Gaiser, Nina and Hoener, Martin and Krüger, Dominik and Kasper, Tina and Köhler, Markus}},
issn = {{1540-7489}},
journal = {{Proceedings of the Combustion Institute}},
keywords = {{Physical and Theoretical Chemistry, Mechanical Engineering, General Chemical Engineering}},
number = {{2}},
pages = {{1699--1708}},
publisher = {{Elsevier BV}},
title = {{{A combustion chemistry study of tetramethylethylene in a laminar premixed low-pressure hydrogen flame}}},
doi = {{10.1016/j.proci.2022.07.205}},
volume = {{39}},
year = {{2023}},
}
@article{53077,
abstract = {{Flame spray pyrolysis is intensively developing as a promising method of nanoparticle synthesis. The experimentally measured chemical and thermal structure of the spray flame is critically needed as a validation target for simulations of the synthesis of nanoparticles in these spray flames. This paper presents an experimental study of the chemical and thermal structure of the flame produced by the SpraySyn burner. The spatial distribution of the main species is obtained by microprobe sampling in combination with orthogonal time-of-flight mass spectrometry. The temperature distribution is obtained by a micro-thermocouple technique. The presented species and temperature data are discussed in the context of their experimental uncertainties and the plausibility of the flame structure.}},
author = {{Gonchikzhapov, Munko and Kasper, Tina}},
journal = {{Applications in Engery and Combustion Science}},
title = {{{Thermal and chemical structure of ethanol and 2-ethylhexanoic acid/ethanol SpraySyn flames}}},
doi = {{10.1016/j.jaecs.2023.100174}},
volume = {{15}},
year = {{2023}},
}
@inproceedings{46500,
abstract = {{The security of Industrial Control Systems is relevant both for reliable production system operations and for high-quality throughput in terms of manufactured products. Security measures are designed, operated and maintained by different roles along product and production system lifecycles. Defense-in-Depth as a paradigm builds upon the assumption that breaches are unavoidable. The paper at hand provides an analysis of roles, corresponding Human Factors and their relevance for data theft and sabotage attacks. The resulting taxonomy is reflected by an example related to Additive Manufacturing. The results assist in both designing and redesigning Industrial Control System as part of an entire production system so that Defense-in-Depth with regard to Human Factors is built in by design.}},
author = {{Pottebaum, Jens and Rossel, Jost and Somorovsky, Juraj and Acar, Yasemin and Fahr, René and Arias Cabarcos, Patricia and Bodden, Eric and Gräßler, Iris}},
booktitle = {{2023 IEEE European Symposium on Security and Privacy Workshops (EuroS&PW)}},
keywords = {{Defense-in-Depth, Human Factors, Production Engineering, Product Design, Systems Engineering}},
location = {{Delft, Netherlands}},
pages = {{379--385}},
publisher = {{IEEE}},
title = {{{Re-Envisioning Industrial Control Systems Security by Considering Human Factors as a Core Element of Defense-in-Depth}}},
doi = {{10.1109/eurospw59978.2023.00048}},
year = {{2023}},
}
@inbook{45360,
author = {{Haase, Michael and Bieber, Maximilian and Tasche, Frederik and Schaper, Mirko and Hoyer, Kay-Peter and Ponik, Bernd and Magyar, Balázs}},
booktitle = {{Proceedings of the 19th Rapid.Tech 3D Conference Erfurt, Germany, 9–11 May 2023}},
editor = {{Kynast, Michael and Eichmann, Michael and Witt, Gerd}},
isbn = {{978-3-446-47941-8}},
publisher = {{Carl Hanser Verlag GmbH & Co. KG}},
title = {{{Umsetzung einer optimierten Oberflächenschlitzung zur Wirbelstromverlustreduktion auf der Oberfläche eines additiv gefertigten Permanentmagnet-Rotors}}},
doi = {{https://doi.org/10.3139/9783446479425.001 }},
year = {{2023}},
}
@misc{52427,
author = {{Schlüter, Alexander}},
publisher = {{Marcus Nettelbeck}},
title = {{{2050 - The Future Podcast, Folge The Energy Systems of the Future}}},
year = {{2023}},
}