Journal of the Korean Recycled Construction Resources Institute (한국건설순환자원학회논문집)

Korean Recycled Construction Resources Institute (한국건설순환자원학회)
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Impact Resistance Properties of High Strength Fiber-Reinforced Composites According to Types and Amounts of Fibers

섬유 종류 및 혼입량에 따른 고강도 섬유보강 복합재료의 충돌 저항 성능

  • Choi, Jeong-Il (Biohousing Research Center, Chonnam National University) ;
  • Park, Se-Eon (School of Architecture, Chonnam National University) ;
  • Kim, Gyu-Yong (Department of Architectural Engineering, Chungnam National University) ;
  • Lee, Sang-Kyu (Department of Architectural Engineering, Chungnam National University) ;
  • Lee, Bang Yeon (School of Architecture, Chonnam National University)
  • Received : 2020.08.19
  • Accepted : 2020.09.21
  • Published : 2020.09.30
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Abstract

The purpose of this study is to investigate the effects of types and amounts of fibers on the compressive strength and tensile behavior high strength fiber-reinforced composites under a static load and impact resistance properties of composites under a high-velocity projectile impact load. Three kinds of mixtures were designed and specimens were manufactured. compressive strength, uniaxial tension, and high velocity projectile impact load tests were performed. Test results showed that the amount of fiber has a greater effect on the tensile strength an d tensile strain capacity than the compressive strength, an d the tensile strain capacity was improved by using hybrid fibers. It was also found that the amount of steel fiber had a great influence on the impact resistance capacity of panels. Although the impact resistance capacity of panels could be improved by using hybrid fibers, the difference of impact resistance capacity between specimens was found to be larger than the case of use of single fiber.

이 연구의 목적은 섬유의 혼입량과 종류에 따른 고강도 섬유보강 복합재료의 정적하중에서의 압축강도 및 인장거동과 비상체 하중 하에서의 충격 저항성을 조사하고자 한다. 이를 위하여 3가지 배합을 설계하였고, 압축강도, 직접인장, 그리고 고속 비상체 충돌 실험을 수행하였다. 실험결과 섬유의 혼입량은 압축강도에 비하여 인장강도에 큰 영향을 미치며, 하이브리드 섬유 사용으로 인장변형성능이 향상되는 것으로 나타났다. 강섬유의 혼입량은 충격 저항성에 큰 영향을 미치는 것으로 나타났다. 하이브리드 섬유를 사용하면 충격 저항성이 더욱 향상되는 것으로 나타났다. 다만, 단일 섬유 사용에 비하여 실험체별성능 차이가 크게 발생하는 것으로 나타났다.

Keywords

References

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