Compressibility and Relaxation Characteristics of Bindered Non-Crimp-Fabrics Under Temperature and Injection Fluid Influence
Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
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Proceedings of the Munich Symposium on Lightweight Design 2021: Tagungsband zum Münchner Leichtbauseminar 2021. 1. ed. Heidelberg: Springer Vieweg, 2022. p. 44-58.
Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
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TY - GEN
T1 - Compressibility and Relaxation Characteristics of Bindered Non-Crimp-Fabrics Under Temperature and Injection Fluid Influence
AU - Bender, Marcel
AU - Fauster, Ewald
PY - 2022/8/29
Y1 - 2022/8/29
N2 - 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.
AB - 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.
KW - Composites
KW - Compaction Behaviour
KW - RTM
U2 - https://doi.org/10.1007/978-3-662-65216-9
DO - https://doi.org/10.1007/978-3-662-65216-9
M3 - Conference contribution
SN - 978-3-662-65215-2
SP - 44
EP - 58
BT - Proceedings of the Munich Symposium on Lightweight Design 2021
PB - Springer Vieweg
CY - Heidelberg
ER -