Journal of the Korean Society of Manufacturing Process Engineers (한국기계가공학회지)

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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Enhancing the Mechanical Properties of Z-Spring by Implementing CF&GF Hybrid Prepreg Lamination Patterns

CF&GF Hybrid Prepreg 적층 패턴에 따른 Z-Spring의 기계적 물성 향상에 관한 연구

  • Kim, Jeong-Keun (Department of Carbon Convergence Engineering, JEONJU UNIV.) ;
  • Choi, Sun-Ho (Department of Carbon Convergence Engineering, JEONJU UNIV.) ;
  • Kim, Young-Keun (S-Motors Co., Ltd) ;
  • Kim, Hong-Gun (Department of Carbon Convergence Engineering, JEONJU UNIV.) ;
  • Kwac, Lee-Gu (Department of Carbon Convergence Engineering, JEONJU UNIV.)
  • 김정근 (전주대학교 탄소융합공학과) ;
  • 최선호 (전주대학교 탄소융합공학과) ;
  • 김영근 ((주) 에스모터스) ;
  • 김홍건 (전주대학교 탄소융합공학과) ;
  • 곽이구 (전주대학교 탄소융합공학과)
  • Received : 2020.12.11
  • Accepted : 2021.01.01
  • Published : 2021.03.31
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Abstract

In vibration-free vehicles such as limousine buses, the vibration is minimized by installing an air spring instead of the leaf spring used in the existing freight cars to prevent the damage to the loaded cargo from shocks generated during movement. In the existing vehicles, steel structures support the air spring system. This study was aimed at replacing the steel structures used in the Z-spring by carbon fiber and glass fiber reinforced plastics. In addition, the mechanical properties (elastic modulus, tensile strength, and shear strength) of carbon fiber and glass fiber prepreg were derived using specimens molded with the corresponding prepreg. The final goal was to develop a material lighter than the conventional steel material but with enhanced mechanical properties. Although the CF prepreg exhibited excellent mechanical properties, the production cost was extremely high. To overcome this limitation, hybrid composites with GF prepreg were examined, which are expected to be promising future materials.

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References

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