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Development and Durability Evaluation of a Bimaterial Composite Frame by Pultrusion Process

인발성형 공정을 통한 이종재료 복합소재 프레임 개발 및 내구성 평가

  • Lee, Haksung (Korea Institute of Carbon Convergence Technology, Advanced Material Research Division) ;
  • Kang, Shinjae (Korea Institute of Carbon Convergence Technology, Advanced Material Research Division)
  • Received : 2014.02.26
  • Accepted : 2014.04.08
  • Published : 2014.04.15

Abstract

Recently, the growing demand for weight reduction and improved structure durabilityfor commercial vehicles has led to active research into the development and application of suitablecomposite materials. This studysuggests abimaterial composite frame produced by apultrusion process to replace steel frames. We focused on the development of a composite frameconsisting of two types of materialsby mixing anorthotropic material with anisotropic material. The inside layer consisted of an aluminum pipe, and the outside layer was composed of a glass fiber pipe. To determine the strength and failure mechanisms of the composite material, tensile tests, shear tests, and three-point bending tests were conducted, followed by fatigue tests. After static testing, the fatigue tests were conducted at a load frequency of 5 Hz, a stress ratio (R) of 0.1, and an endurance limit of $10^6$ for the S-N curve. The resultsshowed that the failure modes were related to both the core design and the laminating conditions.

Keywords

References

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