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http://dx.doi.org/10.14775/ksmpe.2021.20.03.053

Enhancing the Mechanical Properties of Z-Spring by Implementing CF&GF Hybrid Prepreg Lamination Patterns  

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.)
Publication Information
Journal of the Korean Society of Manufacturing Process Engineers / v.20, no.3, 2021 , pp. 53-59 More about this Journal
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.
Keywords
Hybrid Composites; Uni-Directional Prepreg; Lamination Pattern; Mechanical Properties; Vibration-Free;
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