TY - GEN A1 - Rüppel, Gernot Wilhelm A1 - Dorn, Oliver Niklas A1 - Kuke, Felix A1 - Ulke-Winter, Lars A1 - Seidlitz, Holger T1 - Optical tape detection using an IR camera to create a digital twin of rotationally symmetrical wet-wound FRP components T2 - Journal of Engineering 360 N2 - Wet-winding is used to manufacture rotationally symmetrical components such as pipes and pressure vessels, as well as non-rotationally symmetrical components like T-connectors. During this process, a resin-impregnated fiber (e.g., glass or carbon fiber) is wound around a core. The winding pattern influences the mechanical properties, including stiffness and strength of the component, and is optimized based on the expected loads. In practice, however, factors such as tape tension and resin content can cause deviations from the predefined winding pattern. This paper proposes a measuring system utilizing an IR-camera to record the winding pattern during production. The collected data is processed and converted into a digital twin for further analysis. KW - digital twin KW - wet winding KW - IR-Camera KW - optical fiber detection KW - optical tape detection Y1 - 2024 U6 - https://doi.org/10.5604/01.3001.0054.8851 SN - 3071-7507 VL - 1 (2024) IS - 1/24 SP - 46 EP - 57 PB - Index Copernicus ER - TY - GEN A1 - Ost, Lucas A1 - Seidlitz, Holger A1 - Ulke-Winter, Lars A1 - Kuke, Felix T1 - Development of a spherical high‐pressure tank for hydrogen storage in mobile and stationary applications T2 - Energy Technology N2 - In the sub‐project Mukran of the BMBF‐funded flagship project TransHyDE, spherical and nearly spherical‐shaped (isotensoids with short cylindrical spacer) high‐pressure tanks are developed for hydrogen storage. This article presents the planned work of the Chair of Polymer‐based Lightweight Design at the BTU Cottbus–Senftenberg and the research division PYCO at the Fraunhofer IAP. The research topics include the fiber‐compatible design of the liners, the rule‐based optimization of the layer structure of the load‐bearing overwrap made of carbon fiber‐reinforced plastic, the development of a fiber placement strategy, and the integration of the tanks into a frame as a mobile storage solution. KW - CFRP pressure vessel KW - hydrogen KW - pressure vessel KW - spherical pressure vessel Y1 - 2024 U6 - https://doi.org/10.1002/ente.202300942 SN - 2194-4288 PB - Wiley ER - TY - GEN A1 - Kepir, Yusuf A1 - Seidlitz, Holger A1 - Ulke-Winter, Lars A1 - Felix, Kuke T1 - Lightweight heat exchanger design using graphene-reinforced ceramics : a comparative study of dimensional and material effects T2 - Proceedings of the 4th International Online Conference on Materials, 3–6 November 2025 N2 - In high-temperature environments, heat exchangers require lightweight designs, high thermal resistance, and high effectiveness. Graphene-reinforced ceramic matrix composites (G-CMC) offer promising thermal properties for such applications. This study investigates the effectiveness changes of a block-type heat exchanger made of G-CMC, depending on the length and design, leveraging the potential of 3D printing in the production of complex geometries. KW - Ceramic matrix composite KW - Heat exchanger KW - Numerical analysis KW - Heat transfer KW - Thermal effectiveness Y1 - 2025 UR - https://sciforum.net/paper/view/25988 PB - MDPI CY - Basel ER - TY - GEN A1 - Kepir, Yusuf A1 - Seidlitz, Holger A1 - Ulke-Winter, Lars A1 - Kuke, Felix T1 - Geometric optimization and advanced material integration for enhanced thermal performance of compact cross-flow heat exchangers in high-temperature applications T2 - Proceedings of the 6th International Electronic Conference on Applied Sciences, 9–11 December 2025 N2 - Heat exchangers used in high-temperature environments require lightweight designs with high thermal resistance and efficiency. This study numerically investigates the thermal performance of a multi-channel compact cross-flow heat exchanger, focusing on geometric configurations and material selection. KW - Compact heat exchanger KW - Geometric optimization KW - Thermal performance KW - Turbulence promoters KW - Lightweight design Y1 - 2025 UR - https://sciforum.net/paper/view/27631 PB - MDPI CY - Basel ER -