Journal of the Korean Society of Mechanical Technology (한국기계기술학회지)

Korean Society of Mechanical Technology (한국기계기술학회)
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Evaluation on Strength and Durability of Tensile Specimens of CFRP and Metal with Notches

노치를 지닌 CFRP와 금속 인장 시험편들의 강도 및 내구성 평가

  • Lee, Jung-Ho (Mechanical Engineering Dept. Graduate School, Kongju National University) ;
  • Cho, Jae-Ung (Division of Mechanical & Automotive Engineering, Kongju National University)
  • Received : 2016.10.04
  • Accepted : 2016.12.13
  • Published : 2016.12.30
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Abstract

The composite material has the strong durability and light weight as inhomogeneous material. Nowadays, CFRP composite has been noticed as the light weight, high strength and long fatigue life. This study has been carried actively. In this study, the properties of tensile strengths of CFRP, stainless steel are analyzed, and compared each other. In order to secure the data, the tensile specimens with notches of same size by using CFRP, and stainless steel are manufactured and experimented. When the forced displacement of about 11.5 mm proceeds in case of stainless steel specimen, the maximum load of 31000 N is shown simultaneously with the fracture of specimen. When the forced displacement of about 6 mm proceeds in case of CFRP specimen, the maximum load of 16000 N is shown. So, the structural safety becomes highest at CFRP specimen among these specimens. In this study, the finite element analysis is carried out in order to compare with the experimental results. It is verified that the experimental and analysis results are similarly shown each other. Through the result of this study, it is thought that the simulation analysis data with no experiments are trustworthy at using as the real tensile experimental data.

Keywords

Acknowledgement

Supported by : 한국연구재단

References

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