Compressibility and Relaxation Characteristics of Bindered Non-crimp-Fabrics Under Temperature and Injection Fluid Influence

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This research examines the compression, as well as short- and long-term relaxa-tion behaviour of bindered textiles at elevated temperature levels. Experiments were conducted on a carbon fibre non-crimp fabric with epoxy resin binder in a specifically designed compressibility test rig. Expanding past research activities at room temperature [1, 2] it was found in series of loading-relaxation-unloading tests, that the test temperature level significantly influences the maximum compac-tion pressure during the loading stage as well as the pressure characteristics dur-ing the relaxation stage [3]. Furthermore, a significant change in the compression behaviour, well below the specified processing temperature of the binder, was found. Also, a proof-of-concept demonstrates the “in-situ”-injection capability of a novel test-rig, reproducing RTM-like conditions in a controlled laboratory envi-ronment. The findings of this work are intended to support optimizing preform-ing and preform handling steps for liquid composite moulding processes.


TitelProceedings of the Munich Symposium on Lightweight Design 2021
UntertitelTagungsband zum Münchner Leichtbauseminar 2021
Herausgeber (Verlag)Springer Vieweg
ISBN (elektronisch)978-3-662-65216-9
ISBN (Print)978-3-662-65215-2
StatusVeröffentlicht - 29 Aug 2022