@article{60040,
author = {{Pfeffer, Nina and Jäger, Stefanie Nicole and Kaiser, Maximilian Alexander and Meyer, Thomas and Stark, Andreas and Höppel, Heinz Werner}},
issn = {{0921-5093}},
journal = {{Materials Science and Engineering: A}},
publisher = {{Elsevier BV}},
title = {{{Enhancing mechanical strength of Ti-6Al-4V sheet material by short-time sub-β-transus solution heat treatment and additional short-time annealing}}},
doi = {{10.1016/j.msea.2025.147787}},
volume = {{926}},
year = {{2025}},
}
@phdthesis{59908,
author = {{Gevers, Karina}},
isbn = {{978-3-8440-9978-2 }},
keywords = {{Infrarotschweißen, Zeitfestigkeit, Polyamide}},
pages = {{216}},
publisher = {{Shaker Verlag}},
title = {{{Zeitfestigkeit von infrarotgeschweißten gefüllten Polyamiden }}},
year = {{2025}},
}
@article{60081,
author = {{Naumann, Marius and Ostermann, Moritz and Buchenau, Nadja and Oetzel, Jannik and Schlosser, Florian and Meschede, Henning and Tröster, Thomas}},
issn = {{0196-8904}},
journal = {{Energy Conversion and Management}},
publisher = {{Elsevier BV}},
title = {{{Energy efficiency improvement for decarbonization in manufacturing industry: A review}}},
doi = {{10.1016/j.enconman.2025.119763}},
volume = {{338}},
year = {{2025}},
}
@article{63440,
author = {{Moritzer, Elmar and Brandes, Philipp and Westphal, Max Siegfried and Claes, Leander and Wippermann, Mareen and Düchting, Julia and Henning, Bernd}},
journal = {{WAK Jahresmagazin}},
keywords = {{Faser-Kunststoff-Verbunde (FKV), Faserverstärkte Kunststoffe (FVK), Organobleche, Ultraschall}},
pages = {{26–29}},
title = {{{ZERSTÖRUNGSFREIE ULTRASCHALLPRÜFUNG VON ORGANOBLECHEN}}},
volume = {{2025}},
year = {{2025}},
}
@article{60017,
author = {{Skolik, Alexander Marcus and zur Heiden, Philipp and Donner, Johannes Aurelius Tamino and Priefer, Jennifer}},
journal = {{ECIS 2025 Proceedings}},
location = {{Amman, Jordan}},
title = {{{Igniting Knowledge Management for Assistance Systems in Maintenance: A Method for Knowledge Gathering}}},
volume = {{2}},
year = {{2025}},
}
@inproceedings{63437,
author = {{Beckmann, Johanna and Bachmann, Andre and Brandes, Philipp and Marten, Thorsten and Tröster, Thomas and Moritzer, Elmar}},
booktitle = {{24th International Conference on Composite Materials (ICCM24)}},
keywords = {{Faser-Kunststoff-Verbunde (FKV), Faserverstärkte Kunststoffe (FVK), Organobleche}},
publisher = {{The University of Delaware}},
title = {{{Validation of Possible Applications of Flake Laminates for Recycling of PA6-CF Production Scrap}}},
doi = {{https://doi.org/10.5281/zenodo.18597865}},
year = {{2025}},
}
@article{58163,
abstract = {{Fibre-reinforced polymers are increasingly used due to their high specific strength, making them suitable for local sheet metal reinforcement. This allows improved overall mechanical properties with reduced wall thickness of the sheet metal part and, thus, lower weight of the components. One of the main focuses of research into such hybrid structures is on the adhesive properties and the respective failure behaviour of the interfaces. Generally, the failure behaviour under the influence of mechanical loads can be divided into adhesive, cohesive and mixed-mode failure. The correlation between observed failure behaviour and adhesion properties of the hybrid composite materials is analysed in detail in this work. The hybrid composite consists of an aluminium sheet of the alloy EN AW‑6082 T6 and thermoset carbon fibre-reinforced plastic (CFRP) prepreg. The aluminium sheet was laser pretreated before hybrid production to improve the adhesion properties. The specimens studied were produced by the prepreg pressing process, in which the components are cured and joined simultaneously. The influences of the thickness of the CFRP part, the layup, the fibre orientation at the boundary layer, and the laser pretreatment parameters on the properties of the hybrid joints were investigated.}},
author = {{Wu, Shuang and Delp, Alexander and Freund, Jonathan and Walther, Frank and Haubrich, Jan and Löbbecke, Miriam and Tröster, Thomas}},
issn = {{0021-8464}},
journal = {{The Journal of Adhesion}},
keywords = {{Prepreg pressing process, hybrid joints, laser surface pretreatment, intrinsic manufacturing, CFRP, aluminium, materials engineering}},
pages = {{1--26}},
publisher = {{Informa UK Limited}},
title = {{{Correlation between interlaminar shear strength of CFRP and joint strength of aluminium-CFRP hybrid joints}}},
doi = {{10.1080/00218464.2024.2439956}},
year = {{2025}},
}
@article{59872,
abstract = {{Lightweight design is a driving concept in modern automotive engineering to minimize resource consumption over a vehicle's lifecycle through multi-material design, which relies on the use of joining techniques in car body fabrication. Multi-material design and the increasing trend towards producing large structural components using the megacasting process pose considerable challenges, particularly in the mechanical joining of aluminium-silicon (AlSi) castings. These castings typically exhibit low ductility and are prone to cracking when mechanically joined. Based on the excellent castability of hypoeutectic AlSi alloys, these are applied in sand casting and die casting as well as in megacasting. With a silicon content between 7 wt% and 12 wt%, these AlSi-alloys have a plate-like silicon phase that initiates cracks during mechanical joining. To enhance the joinability of castings, the research hypothesis is that improved solidification conditions enable a significant modification in the microstructure and therefore, increase the mechanical properties. During the manufacture of the castings using the sand casting process, the solidification conditions within the structural elements are varied to modify the microstructure to obtain castings with graded microstructure. The castings are evaluated using mechanical, microstructural and joining testing methods and finally, a microstructure-joinability correlation is established.}},
author = {{Neuser, Moritz and Schlichter, Malte Christian and Hoyer, Kay-Peter and Bobbert, Mathias and Meschut, Gerson and Schaper, Mirko}},
journal = {{44th Conference of the International Deep Drawing Research Group (IDDRG 2025)}},
keywords = {{Joining, Casting, Self-pierce riveting, Aluminium casting alloy}},
location = {{Lissabon (Portugal)}},
title = {{{Mechanical joinability of microstructurally graded structural components manufactured from hypoeutectic aluminium casting alloys}}},
doi = {{10.1051/matecconf/202540801081}},
volume = {{408}},
year = {{2025}},
}
@inproceedings{59441,
abstract = {{Abstract. Accurate Finite Element Modeling (FEM) of joints is essential in the design of complex mechanical systems such as automotive body-in-white (BIW) structures, as it plays a critical role in evaluating their performance. Although well-established techniques exist for modeling rotationally symmetric joints, there remains a significant gap in effectively modeling non-rotationally symmetric joints. These joints are particularly relevant in the automotive BIW, where they can better accommodate anisotropic loading conditions. In this study, strategies for modeling non-rotationally symmetric joints were explored using finite element simulations in LS-DYNA. The findings demonstrate that discrete beam elements can capture the anisotropic characteristics of such joints. Two models were tested: a single-beam model for stiffness periodicity every 90°, and a three-beam model for stiffness periodicity every 120°. Force responses, stress distribution, and sheet bending behaviors were analyzed, confirming that discrete beam elements can accurately represent direction-dependent stiffness. These results establish a foundation for developing advanced joint modeling strategies in complex mechanical systems.}},
author = {{Devulapally, Deekshith Reddy and Tröster, Thomas}},
booktitle = {{Materials Research Proceedings}},
issn = {{2474-395X}},
location = {{Paderborn}},
publisher = {{Materials Research Forum LLC}},
title = {{{Modelling strategies for non-rotationally symmetric joints}}},
doi = {{10.21741/9781644903551-21}},
volume = {{52}},
year = {{2025}},
}
@article{58807,
abstract = {{One of the most important strategies for reducing CO2 emissions in the mobility sector is lightweight construction. In particular, the car body offers several opportunities for weight reduction. Multi-material designs are increasingly being applied to select the most suitable material for the respective load and ultimately achieve synergy effects. For example, aluminium castings are used at the nodes of a spaceframe body. Subsequently, these are joined with profiles to form the bodyshell. To join different materials mechanical joining techniques, such as semi-tubular self-piercing riveting, are deployed. According to the current state of the art, cracks occur in the aluminium castings during the mechanical joining process as a result of the high degree of deformation. Although the aluminium casting alloys of the AlSi-system exhibit low ductility, these alloys reveal excellent castability. In particular, the ability to cast thin structural parts is enabled by the low liquidus point of the near eutectic aluminium casting alloys.
This study addresses the mechanical joining properties of the near eutectic aluminium casting alloy AlSi12, depending on different microstructures. These are achieved by annealing processes and modifying agents. Through an adapted heat treatment, the previously lamellar morphology can be transformed into a globular morphology, which leads to increased ductility and prevents the formation of cracks during the self-piercing riveting (SPR). The joinability is investigated using different die geometries, whereas the joint formation is analysed regarding crack initiation. To evaluate the increased ductility, microstructural and mechanical tests are performed and finally, a microstructure-joinability correlation is established.}},
author = {{Neuser, Moritz and Holtkamp, Pia Katharina and Hoyer, Kay-Peter and Kappe, Fabian and Yildiz, Safak and Bobbert, Mathias and Meschut, Gerson and Schaper, Mirko}},
journal = {{The Journal of Materials: Design and Applications, Part L}},
keywords = {{aluminium, casting, microstructure, joinability, self-piercing riveting}},
location = {{Porto, Portugal}},
publisher = {{Sage Publications}},
title = {{{Mechanical properties and joinability of the near-eutectic aluminium casting alloy AlSi12}}},
doi = {{10.1177/14644207251319922}},
year = {{2025}},
}
@article{59130,
author = {{Kleinschmidt, Dennis and Brüning, Florian}},
journal = {{KGK Kautschuk Gummi Kunststoffe}},
keywords = {{Rheologie, Viskosität, Wandgleiten}},
title = {{{Influence of pre-shearing on the rheological properties of filled rubber compounds}}},
year = {{2025}},
}
@phdthesis{60286,
author = {{Austermeier, Laura}},
title = {{{Vorhersagemodell zum ortsaufgelösten Energieeintrag in dichtkämmenden Gleichdrall-Doppelschneckenextrudern}}},
year = {{2025}},
}
@phdthesis{60287,
author = {{Scholle, Maximilian}},
title = {{{Die verarbeitungsinduzierte Glasfaserschädigung von Bulk Molding Compounds}}},
year = {{2025}},
}
@article{60851,
author = {{Ghosh, Koustav and Milaege, Dennis and Steinmeier, Paul and Schaper, Mirko and Hoyer, Kay-Peter and Pramanik, Sudipta}},
issn = {{1059-9495}},
journal = {{Journal of Materials Engineering and Performance}},
publisher = {{Springer Science and Business Media LLC}},
title = {{{Effect of Strain Rate on the Deformation Behavior and Energy Absorption Characteristics of LPBF-Processed Ti2448 Microarchitectured Lattice Structures}}},
doi = {{10.1007/s11665-025-11669-6}},
year = {{2025}},
}
@article{60885,
abstract = {{To reduce transport-related environmental impacts, innovative mobility system approaches such as on-demand services are being developed. These can include operating vehicles that differ regarding their characteristics and application profile from privately owned cars in motorized individual transport. Studies on life cycle assessment and life cycle engineering of vehicle lightweight structures are mainly limited to these privately owned cars and the impact category of climate change. In this paper, a method for life cycle assessment-based engineering of lightweight structures in vehicles for various mobility system applications, including on-demand mobility services, is developed. The method enables the holistic life cycle assessment of lightweight structures in different mobility system applications considering parameter changes at the upstream products, component, subsystem, vehicle and mobility system levels, as well as the integration of results into engineering activities. A case study is used to show that the vehicle and mobility system application of lightweight structures can significantly influence their environmental impacts and the selection of ecologically preferable product designs. The application in vehicles for on-demand mobility services can lead to an increase in absolute use stage energy demand and environmental impacts compared to applications in privately owned vehicles for motorized individual transport. However, normalized to the transport performance provided, the lifecycle environmental impacts of structural components in vehicles for on-demand mobility services can be lower than in vehicles for motorized individual transport. The paper contributes methodically and with quantitative results to improved decision making in life cycle engineering activities for lightweight structures in mobility system applications.}},
author = {{Ostermann, Moritz and Dierkes, Eric and Marten, Thorsten and Tröster, Thomas}},
issn = {{2666-7908}},
journal = {{Cleaner Engineering and Technology}},
keywords = {{Life cycle assessment, Life cycle engineering, Lightweight design, On-demand mobility, Shared mobility, Mobility services}},
publisher = {{Elsevier BV}},
title = {{{Life cycle engineering of lightweight structures in vehicles for on-demand mobility services}}},
doi = {{10.1016/j.clet.2025.101058}},
volume = {{28}},
year = {{2025}},
}
@article{61139,
author = {{Pfeffer, Nina and Kaiser, Maximilian Alexander and Feix, Werner and Kälble, Nils and Merten, Mathias and Stark, Andreas and Haufe, Andre and Meyer, Thomas and Tröster, Thomas and Höppel, Heinz Werner}},
issn = {{0921-5093}},
journal = {{Materials Science and Engineering: A}},
publisher = {{Elsevier BV}},
title = {{{Energy- and material-efficient Ti-6Al-4V sheet part fabrication by the novel TISTRAQ-process, including resistance heating and tool-based quenching: Insights into test stand design and material potential}}},
doi = {{10.1016/j.msea.2025.149015}},
volume = {{945}},
year = {{2025}},
}
@article{61138,
author = {{Zhan, Yingjie and Caylak, Ismail and Ostwald, Richard and Barth, Enrico and Uhlmann, Eckart}},
issn = {{2520-8160}},
journal = {{Multiscale and Multidisciplinary Modeling, Experiments and Design}},
number = {{10}},
publisher = {{Springer Science and Business Media LLC}},
title = {{{Damage-incorporated four-step mean-field method for simulating CFRP machining: a novel algorithmic approach}}},
doi = {{10.1007/s41939-025-01026-4}},
volume = {{8}},
year = {{2025}},
}
@article{62166,
author = {{Prüßner, Tim and Hoyer, Kay-Peter and Buitkamp, Nadine and Vieth, Pascal and Grundmeier, Guido}},
issn = {{0254-0584}},
journal = {{Materials Chemistry and Physics}},
publisher = {{Elsevier BV}},
title = {{{Surface functionalisation of additively manufactured AlSi10Mg by organophosphonic acid and PDMS grafting}}},
doi = {{10.1016/j.matchemphys.2025.131758}},
volume = {{349}},
year = {{2025}},
}
@inproceedings{62725,
abstract = {{Aluminium-Silizium-Legierungen (AlSi) werden insbesondere bei der gießtechnischen
Herstellung von Leichtbaukomponenten für Fahrzeuge verwendet. Dieses Legierungssystem hat hervorragende
Gießeigenschaften bei gleichzeitig akzeptablen mechanischen Eigenschaften. Aufgrund des hohen
Silizium-(Si)-Gehaltes, wodurch die Volumenkontraktion im Phasenübergang von flüssig-fest nahezu
unterbunden wird, neigen AlSi-Legierungen dazu, feinere oder gröbere Si-Platten bei unterschiedlichen
Erstarrungsgeschwindigkeiten zu bilden. Um die mechanischen Eigenschaften zu verbessern, werden
dem Legierungssystem in der Schmelzphase entweder Natrium (Na) oder Strontium (Sr) zugesetzt. Dies
hat zur Folge, dass sich eine fein lamellare Si-Morphologie bei der Erstarrung ausbildet; dies kann ebenfalls
durch hohe Erstarrungsgeschwindigkeiten erreicht werden. Ein nachfolgendes Lösungsglühen bewirkt
eine Sphäroidisierung der Si-Partikel und dient der Steigerung der Duktilität. Aktuell fehlen fundierte
Erkenntnisse zur Ausprägung der Si-Morphologie in Abhängigkeit der Erstarrungsgeschwindigkeit oder
infolge einer Wärmebehandlung. Vor diesem Hintergrund werden in dieser Studie verschiedene Behandlungsparameter
in Bezug auf das Einformverhalten der Si-Partikel mit einem bildauswertenden Verfahren
evaluiert sowie unter Bezug auf verschiedene chemische Zusammensetzungen miteinander korreliert.}},
author = {{Neuser, Moritz and Cichon, Gerrit and Hoyer, Kay-Peter and Schaper, Mirko}},
booktitle = {{Bildauswertendes Verfahren zur Evaluierung der Mikrostruktur von AlSi-Systemen}},
isbn = {{978-3-88355-454-9}},
keywords = {{Bildauswertendes Verfahren, Mikrostrukturanalyse, AlSi-System, Si-Morphologie}},
location = {{Dresden}},
pages = {{454 -- 459}},
publisher = {{Deutsche Gesellschaft für Materialkunde (DGM)}},
title = {{{Bildauswertendes Verfahren zur Evaluierung der Mikrostruktur von AlSi-Systemen}}},
volume = {{43}},
year = {{2025}},
}
@article{63072,
abstract = {{Titanium alloys are widely employed for biomedical implants due to their high strength, biocompatibility, and corrosion resistance, yet their lack of intrinsic antibacterial activity remains a major limitation. Incorporating copper, an antibacterial and β-stabilising element, offers a promising strategy to enhance implant performance. This study investigates Ti-6Al-7Nb modified with 1–9 wt.% Cu via in situ alloying during metal-based laser powder bed fusion (PBF-LB/M), with the aim of assessing processability, microstructural evolution, and mechanical properties. Highly dense samples (>99.9%) were produced across all Cu levels, though chemical homogeneity strongly depended on processing parameters. Increasing Cu content promoted β-phase stabilisation, Ti2Cu precipitation, and pronounced grain refinement. Hardness and yield strength increased nearly linearly with Cu addition, while ductility decreased sharply at ≥5 wt.% Cu due to intermetallic formation, hot cracking, and brittle fracture. These results illustrate both the opportunities and constraints of rapid alloy screening via PBF-LB/M. Overall, moderate Cu additions of 1–3 wt.% provide the most favourable balance between mechanical performance, manufacturability, and potential antibacterial functionality. These findings provide a clear guideline for the design of Cu-functionalised titanium implants and demonstrate the efficiency of in situ alloy screening for accelerated materials development.}},
author = {{Steinmeier, Paul and Hoyer, Kay-Peter and Lopes Dias, Nelson Filipe and Zielke, Reiner and Tillmann, Wolfgang and Schaper, Mirko}},
issn = {{2073-4352}},
journal = {{Crystals}},
keywords = {{Biomaterial, In Situ Alloying, Titanium, Additive Manufacturing}},
number = {{12}},
publisher = {{MDPI AG}},
title = {{{In Situ Alloying of Ti-6Al-7Nb with Copper Using Laser Powder Bed Fusion}}},
doi = {{10.3390/cryst15121053}},
volume = {{15}},
year = {{2025}},
}