Abstract
Fabric deformation alters its local permeability characteristics which, in turn, influences the resin infusion process. This work investigates the radial permeability test method of sheared carbon fiber textile reinforcement materials for the purposes of infusion modeling. A novel experimental approach is described, which utilizes a customized Matlab video processing code to track fluid flow and calculate permeability using data from the complete flow field. Results show principal permeability values, K1 and K2, to increase and decrease, respectively, from a near isotropic state as the fabric shear angle increases, yielding a K1/K2 ratio of 3.74 at the maximum measured shear angle of 40°. Detailed statistical analysis revealed significant error for cases where fewer than 16 measurement directions were used for the permeability calculation, particularly in highly anisotropic samples.
| Original language | English |
|---|---|
| Pages (from-to) | 2287-2298 |
| Number of pages | 12 |
| Journal | Polym Compos |
| Volume | 39 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - 2018 |
| Externally published | Yes |
Keywords
- Carbon fibers Flow of fluids Testing Video signal processing Experimental approaches Fabric deformations Local permeabilities Principal permeability Radial permeability Resin infusion process Textile preforms Textile reinforcement Textiles