Textile Science and Engineering (한국섬유공학회지)

The Korean Fiber Society (한국섬유공학회)
권호 표지
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Mechanical Properties of Composites According to Weft Types of Unidirectional Aramid Fabrics

일방향 아라미드 직물의 위사 종류에 따른 복합재료의 기계적 물성

  • Bak, Su Young (Department of Organic Material Science and Engineering, Pusan National University) ;
  • Baek, Young Mee (Cultural Heritage Preservation Research Institute, Pusan National University) ;
  • Kim, Yong (Korea Dyeing and Finishing Technology Institute (DYETEC)) ;
  • An, Seung Kook (Department of Organic Material Science and Engineering, Pusan National University)
  • 박수영 (부산대학교 유기소재시스템공학과) ;
  • 백영미 (부산대학교 문화유산보존연구소) ;
  • 김용 (다이텍연구원) ;
  • 안승국 (부산대학교 유기소재시스템공학과)
  • Received : 2020.01.12
  • Accepted : 2020.02.24
  • Published : 2020.02.29
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Abstract

As fiber-reinforced composite materials are lightweight, easy to install and excellent in performance, these are used for repairing civil engineering structures. In particular, structural reinforcement by aramid has advantages such as high strength, high elasticity, durability, electrical insulation, construct ability, costs and so on. In this study, aramid fibers were used for the warp yarns, and glass fiber coated with LMF (Low Melting Fiber) and silk blended with LMF were used for the weft yarns. Using this, the unidirectional aramid fabric for structural reinforcement was woven. Composite materials were prepared by using epoxy resin and their mechanical properties were tested. In addition, the impact resistance of the multi-ply laminate aramid composite by external impact was tested, and according to lamination method, the mechanical properties of the aramid composite were comparatively analyzed. The performance of aramid specimens using glass fiber coated with LMF as weft yarns was superior in all performances such as tensile properties, flexural properties, and impact strength. Even when silk/LMF weft yarn was used, it showed similarly high mechanical properties. The strength of the three types of laminated patterns was compared. The strength was the best at 0 °/0 °/0 °, and similar at 0 °/45 °/90 °, and the strength at 0 °/90 °/0 ° decreased by more than 26%. The applicability of silk as a industrial fiber was tested, and the mechanical properties of unidirectional aramid fabrics were analyzed.

Keywords

Acknowledgement

이 과제는 부산대학교 기본연구지원사업(2년)에 의하여 연구되었음.

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