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Studie der Einflussparameter an mit unidirektional geflochtener Carbonfaser verstärkten Kunststoffen In diesem Beitrag wird eine Methodik zur Charakterisierung der mechanischen Eigenschaften von unidirektional (UD) geflochtenen CFK-Laminaten in Abhängigkeit deren Fertigungsparameter beschrieben. Kernpunkt der Untersuchung bilden mit unterschiedlichen Prozessparameter geflochtene Proben, welche über deren vertikalen Faserondulation im Textil sowie im ausgehärteten Laminat charakterisiert wurden. Durch die Korrelation der Faserarchitektur mit den gemessenen Druckfestigkeiten und Zugsteifigkeiten konnte eine grundlegende Formulierung zur Bestimmung der mechanischen Eigenschaften im Rahmen des Prozessfensters aufgestellt werden. Key parameter study on unidirectional braided carbon fiber reinforced composite laminates In this study a methodic for the characterization of the process depending mechanical properties of unidirectional braided CFRP laminates is presented. The key approach base on braided coupon specimens, which were characterized respectively the fiber architecture in textile and in CFRP state. The correlation of the undulation angles with the corresponding compression strength and tensile modulus is the basis for a mathematically formulation to define the process depending properties.

The Solid Oxide Fuel Cell (SOFC) offers major benefits, namely electrical efficiency and fuel versatility, for hybrid-electric aircraft propulsion. The combined development of novel SOFC concepts and corresponding manufacturing processes are regarded as key objectives for the SOFC activities at Airbus Central Research and Technology. Airbus is designing, manufacturing and testing SOFC concepts with the aim to achieve highest gravimetric power densities. Novel manufacturing technologies for metallic and ceramic materials have the potential to enable lighter functional layers for SOFCs with increased intrinsic mechanical stability and surface area. Different cell concepts with an optimized current collection are currently under development at Airbus. The micro-tubular and monolithic SOFC are seen as the most promising concepts, whereas around 2 kW/kg on a cell level has recently been achieved in a performance test at Airbus.