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Fabrication and Characterization of 3D Woven Textile Reinforced Thermoplastic Composites  

홍순곤 (한국기계연구원 재료기술연구소 복합재료그룹)
변준형 (한국기계연구원 재료기술연구소 복합재료그룹)
이상관 (한국기계연구원 재료기술연구소 복합재료그룹)
Publication Information
Composites Research / v.16, no.2, 2003 , pp. 33-40 More about this Journal
Abstract
In order to overcome one of the most pronounced shortcomings of conventional laminated composites, such as the low damage tolerance due to delamination, the thermoplastic materials and 3D (three-dimensional) preforms have been utilized in the manufacture of composite materials. From the newly developed process termed as the co-braiding, hybrid yarns of the thermoplastic fibers (PEEK) and reinforcing fibers (carbon) have been fabricated. In order to further enhance the delamination suppression, through thickness fibers have been introduced by way of 3D weaving technique in the fabrication of textile preforms. The preforms have been thermoformed to make composite materials. Complete impregnation of the PEEK into the carbon fiber bundles has been confirmed. For the comparison of mechanical performance of 3D woven composites, quasi-isotropic laminates using APC-2/AS4 tapes have been fabricated. Tensile and compressive properties of both the composites have been determined. Furthermore. the open hole, impact and CAI(Compression After Impact) tests were also carried out to assess the applicability of 3D woven textile reinforced thermoplastic composites in aerospace structures.
Keywords
3D Textile Preform; Braiding; Hybrid Yarn; CAI Test;
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