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

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Abstract

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.

Details

OriginalspracheEnglisch
TitelProceedings of the Munich Symposium on Lightweight Design 2021
UntertitelTagungsband zum Münchner Leichtbauseminar 2021
ErscheinungsortHeidelberg
Herausgeber (Verlag)Springer Vieweg
Seiten44-58
Seitenumfang14
Auflage1
ISBN (elektronisch)978-3-662-65216-9
ISBN (Print)978-3-662-65215-2
DOIs
StatusVeröffentlicht - 29 Aug 2022