Effect of rheological transitions in matrix resin on flow mechanism of carbon Fiber/Epoxy prepreg
| Autor: | Anoush Poursartip, Masaki Hojo, Yuta Naito, Masaaki Nishikawa, Naoki Matsuda, Christophe Mobuchon |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
Dynamic mechanical analysis Epoxy Condensed Matter::Soft Condensed Matter Physics::Fluid Dynamics Shear modulus Shear (sheet metal) Rheology Flow (mathematics) Mechanics of Materials Percolation visual_art Ceramics and Composites visual_art.visual_art_medium Composite material Shear flow |
| Zdroj: | Composites Part A: Applied Science and Manufacturing. 151:106612 |
| ISSN: | 1359-835X |
| Popis: | There are two types of flow mechanism in prepreg processing: shear flow, in which resin and fibers flow together, and percolation flow, in which resin flows out of the gaps between fibers. In this study, we experimentally evaluated how these flow mechanisms change during cure including the gelation stage. Results of compression tests at various initial degree of cure at the start of compression showed that the maximum amount of shear flow is almost constant before matrix gelation. In the gelation region of matrix resin, shear flow still occurs at the gel point whilst percolation flow has completely stopped. Furthermore, it was suggested that the limit of the shear flow in the gelation stage can be described by the combined effects of the shear modulus of the fiber-bed and the shear storage modulus of matrix resin. |
| Databáze: | OpenAIRE |
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