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- Title
Modeling meso-scale-void formation during through-thickness flow in liquid composite molding.
- Authors
Yang, B.; Bi, F. Y.; Wang, S. L.; Ma, C.; Wang, S. B.; Li, S.
- Abstract
Void formation during in-plane flow has been widely researched, while the void prediction method for throughthickness flow has not been reported, which restricts the effective quality control for through-thickness permeating type liquid composite molding (LCM). In this paper, the structural morphology and connectivity of mesopores in multi-layer woven fabrics have been studied, the difference between intra-yarn and inter-yarn flow paths during through-thickness permeating has been analyzed, and the air entrapment processes in different types of mesopores have been revealed. Based on the modeling of micro and meso through-thickness flow, a mathematical model to predict the formation and size of mesoscale- void has been established, the variation of intra-yarn flow path under different compaction conditions has been analyzed to guarantee the precision of the model. Experimental method has been designed to measure the size of meso-scale-void formed during through-thickness LCM, comparisons between prediction and experimental results have demonstrated the correctness of the above model.
- Subjects
YARN; QUALITY control; MESOPORES; COMPACTING
- Publication
Express Polymer Letters, 2020, Vol 14, Issue 1, p77
- ISSN
1788-618X
- Publication type
Article
- DOI
10.3144/expresspolymlett.2020.7