@misc{RoeschSeidlitzPfeiferetal., author = {R{\"o}sch, Janina J. and Seidlitz, Holger and Pfeifer, Robin and Burlefinger, Hubert and Maurer, Thomas}, title = {Preform joints in embroidered fabrics - influence on the mechanical properties}, series = {Advanced Composite Materials}, journal = {Advanced Composite Materials}, pages = {1 -- 16}, abstract = {Preforms with large complex geometry, for example, body parts for the automotive industry, are consisted into multiple elements - so-called sub-preforms. Hereby the sub-preforms can be adjusted to different local load cases but joining of these sub-preforms also raises challenges. The preform joints are decisive to the mechanical properties of the final component. The state-of-the-art joint, a single lap, results in a variation of wall thickness with local redirection of fibre orientation. In this paper, the influence of alternative joints of embroidered fabrics is analysed regarding the resulting mechanical properties of the part. The built test specimen contains different preform joints with different process-relevant parameters. Such as gaps between the sub-preforms, to analyse the influence on the mechanical performance. To reveal the various defects like voids, air pockets and to validate the fibre orientation, computer tomography (CT) investigation was performed on the built plates. In addition, the influence in mechanical properties was also analysed. The overlapping is analysed with tensile strength test according to DIN EN ISO 527-4.}, language = {en} } @phdthesis{Roesch, author = {R{\"o}sch, Janina J.}, title = {Flexible werkstoff- und prozessgerechte Preforms f{\"u}r hochbeanspruchte Faserverbund-Komponenten im Automobilbau}, publisher = {Verlag Dr. Hut}, address = {M{\"u}nchen}, isbn = {978-3-8439-4706-0}, pages = {209}, abstract = {In der Automobilindustrie spielt bei der Herstellung von schalenf{\"o}rmigen Faserverbundkomponenten mit komplexer Geometrie das Resin-Transfer- Moulding-Verfahren (RTM) eine bedeutende Rolle. Um Verschnitt sowie Umformgrad zu reduzieren werden geometrisch komplexe, großfl{\"a}chige Strukturen aus einzelnen Sub-Preforms zusammengesetzt. W{\"a}hrend der Preform-Montage entstehen im {\"U}berlappungsbereich des Bauteils Wanddickenspr{\"u}nge sowie lokale Abweichungen vom gestreckten Faserwinkel. Der textile F{\"u}gebereich der Sub-Preforms ist nicht nur f{\"u}r die mechanischen Eigenschaften eines Bauteils ausschlaggebend, sondern hat auch direkten Einfluss auf das F{\"u}llverhalten bei der Bauteilherstellung im RTM-Prozess. Ziel dieser Arbeit ist die Entwicklung flexibler, werkstoff- und prozessgerechter Preforms f{\"u}r hochbeanspruchte Faserverbund-Komponenten im Automobilbau. Textilien welche mit dem TFP-Verfahren hergestellt werden erf{\"u}llen die Anforderungen der Großserie bei Gew{\"a}hrleistung der Richtungsflexibilit{\"a}t. Diese Arbeit bietet L{\"o}sungen f{\"u}r eine gekoppelte Drapier- und F{\"u}llsimulation von lastpfadgerechten technischen Gesticken, sowie einen Abgleich mit experimentell gewonnenen Erkenntnissen. Prozessrelevante Parameter, wie Spaltabst{\"a}nde und {\"U}berlappl{\"a}ngen werden analysiert, bewertet und gegen{\"u}bergestellt. Erkenntnisse bzgl. dem Einfluss von Drapierprozessen auf das F{\"u}llverhalten werden ermittelt und mit den Auswirkungen dieser {\"U}berlappungen auf die mechanischen Eigenschaften verkn{\"u}pft.}, language = {de} } @misc{KuepperRoeschWinkler, author = {K{\"u}pper, Christoph and R{\"o}sch, Janina J. and Winkler, Herwig}, title = {Empirical findings for the usage of 5G as a basis for real time locating systems (RTLS) in the automotive industry}, series = {Procedia CIRP}, volume = {107}, journal = {Procedia CIRP}, issn = {2212-8271}, doi = {10.1016/j.procir.2022.05.146}, pages = {1287 -- 1292}, language = {en} } @misc{KuepperRoeschWinkler, author = {K{\"u}pper, Christoph and R{\"o}sch, Janina J. and Winkler, Herwig}, title = {Use of real time localization systems (RTLS) in the automotive production and the prospects of 5G - A literature review}, series = {Journal for Production \& Manufacturing}, volume = {10}, journal = {Journal for Production \& Manufacturing}, number = {1}, issn = {2169-3277}, doi = {10.1080/21693277.2022.2144522}, pages = {840 -- 874}, abstract = {Numerous challenges in automotive production lead to an increased need for transparency and optimization. Real-Time-Location-Systems (RTLS) is a key tool for achieving this goal. They enable intelligent and automated production processes. Existing solutions such as Ultra-Wideband, Bluetooth-Low-Energy, or Radio-Frequency-Identification have drawbacks in costs, range, or accuracy. 5G is a newly developing standard, recently including high-accuracy positioning. It is unclear, however, if 5G positioning has reached industrial maturity. This contribution aims to determine the state-of-the-art of 5G positioning by performing a systematic literature review and comparing its findings to industrial positioning requirements. 143 articles were analyzed and categorized as: the fundamentals of radio-frequency positioning, an overview of existing solutions, the state-of-the-art, and the maturity of 5G as an industrial positioning system. Results show that, theoretically, centimeter-level accuracies are pursued. However, practical tests are rarely conducted. Concluding, 5G positioning shows great potential, but industrial pilots are required to validate the theoretical characteristics.}, language = {en} } @misc{BledzkiSeidlitzGoracyetal., author = {Bledzki, Andrzej K. and Seidlitz, Holger and Goracy, Krzysztof and Urbaniak, Magdalena and R{\"o}sch, Janina J.}, title = {Recycling of Carbon Fiber Reinforced Composite Polymers—Review—Part 1: Volume of Production, Recycling Technologies, Legislative Aspects}, series = {Polymers}, volume = {13}, journal = {Polymers}, number = {2}, issn = {2073-4360}, doi = {10.3390/polym13020300}, language = {en} } @misc{BledzkiSeidlitzKrenzetal., author = {Bledzki, Andrzej K. and Seidlitz, Holger and Krenz, Jonas and Goracy, Krzysztof and Urbaniak, Magdalena and R{\"o}sch, Janina J.}, title = {Recycling of Carbon Fiber Reinforced Composite Polymers—Review—Part 2: Recovery and Application of Recycled Carbon Fibers}, series = {Polymers}, volume = {12}, journal = {Polymers}, number = {12}, issn = {2073-4360}, doi = {10.3390/polym12123003}, language = {en} } @misc{KuepperRoeschPoradaetal., author = {K{\"u}pper, Christoph and R{\"o}sch, Janina and Porada, Andreas and Loidl, Karin and Seitz, Jochen and Winkler, Herwig}, title = {Use Case Driven Feasibility Study on the Technical Capabilities of 5G Indoor Positioning in the Automotive Production}, series = {13th International Conference on Indoor Positioning and Indoor Navigation (IPIN-WiP 2023), September 25 - 28, 2023, Nuremberg, Germany}, journal = {13th International Conference on Indoor Positioning and Indoor Navigation (IPIN-WiP 2023), September 25 - 28, 2023, Nuremberg, Germany}, editor = {Kaiser, Susanna and Franke, Norbert and Mutschler, Christopher}, publisher = {RWTH}, address = {Aachen}, issn = {1613-0073}, url = {http://nbn-resolving.de/urn:nbn:de:0074-3581-3}, abstract = {The digitalization and automation of processes are essential for successful industrial production systems. Real-time positioning data is crucial for intelligent, automated, and quality-assured production. However, the lack of standardization in current real-time locating systems leads to high costs, inoperability, and limited multi-vendor availability. On the other hand, 5G technology offers in theory opportunities for high-accuracy positioning beyond mobile communication. Local 5G networks in industrial settings could leverage existing infrastructure for positioning. Although previous research demonstrates the theoretical capabilities of 5G positioning, practical trials cannot be performed due to hardware still being in early research developmental stages. This research aims to close the gap between research and industrial use by assessing the technical feasibility of 5G indoor positioning in an automotive production environment. To achieve this, use cases from research and industry are categorized into different scenarios based on distinct requirements. Representative use cases are analyzed considering system requirements and their feasibility. For this, first the overall concept of 5G positioning is tested in a research lab, followed by simulations of 5G positioning in an industrial environment. This is performed to determine the technical capability and expected accuracy. The simulations show that sub-meter accuracies can be achieved when combining 5G positioning with line� of-sight filtering. This study highlights the promising role of 5G as a real-time locating system in industrial settings. However, further research is needed to evaluate its accuracy and reliability in complex practical scenarios. Real industrial piloting will contribute to the validation and optimization of 5G positioning systems, facilitating widespread adoption across industries.}, language = {en} }