Macromolecular Research

The Polymer Society of Korea (한국고분자학회)
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Mechanical Properties and Failure Mechanism of the Polymer Composite with 3-Dimensionally Stitched Woven Fabric

  • Lee, Geon-Woong (Polymer Hybrid Research Center, Korea Institute of Science and Technology) ;
  • Park, Joong-Sik (Polymer Hybrid Research Center, Korea Institute of Science and Technology) ;
  • Lee, Sang-Soo (Polymer Hybrid Research Center, Korea Institute of Science and Technology) ;
  • Park, Min (Polymer Hybrid Research Center, Korea Institute of Science and Technology) ;
  • Kim, Junkyung (Polymer Hybrid Research Center, Korea Institute of Science and Technology) ;
  • Choe, Chul-Rim (Polymer Hybrid Research Center, Korea Institute of Science and Technology) ;
  • Soonho Lim (Polymer Hybrid Research Center, Korea Institute of Science and Technology)
  • Published : 2003.04.01
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Abstract

The mechanical properties and failure mechanisms of through-the-thickness stitched plain weave glass fabric/polyurethane foam/epoxy composites were studied. Hybrid composites were fabricated using resin infusion process (RIP). Stitched sandwich composite increased drastically the flexural properties as compared with the unstitched fabrics. The breaking of stitching yarns was observed during the flexural test and this failure mode yielded relatively high flexural properties. Composites with stitched sandwich structure improved the mechanical properties with increasing the number of stitching yarns. From this study, it was concluded that proper combination of stitching density and types of stitching fiber is important factor for through-the-thickness stitched composite panels.

Keywords

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