Comparison of tensile properties of co-woven-knitted and multi-layered biaxial weft-knitted fabric reinforced composites |
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Authors: | Yanhua Xu Xinlin Yuan Ni Wang |
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Institution: | 11006. College of Textiles, Key Laboratory of High Performance Fibres and Products, Ministry of Education, Donghua University, Shanghai, 201620, China 21006. School of Arts & Garments Engineering, Changshu Institute of Technology, Changshu, 215500, China
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Abstract: | The co-woven-knitted (CWK) fabric and multi-layered biaxial weft-knitted (MBWK) fabric were produced using glass filaments as warp and weft inserted yarns and high tenacity polyester as stitched yarns. Vacuum Assisted Resin Transfer Molding process was used to produce the two composites. Tensile tests were carried out in the course, wale and slanting directions of the composites, respectively. Specific stress-strain curves and failure modes of the two composites were investigated and compared. Results reveal that tensile strengths and elastic moduli of the two composites in the course and wale directions are better than those in the bias direction. All the composite samples fracture in the brittle damage mode. Furthermore, the buckling due to different inserted ways of the warp and weft yarns has a few influences on the tensile properties of the two composites. This research may lay a foundation for the establishment of the process windows for the co-woven-knitted reinforced composites. |
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