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Dynamic Property Evaluation of Four-Harness Satin Woven Glass/epoxy Composites for a Composite Bogie Frame

복합소재 대차프레임용 4매 주자직 유리섬유/에폭시 복합소재의 진동특성평가

  • Kim, Il Kyeom (New Transportation Systems Research Center, Korea Railroad Research Institute) ;
  • Kim, Jung Seok (New Transportation Systems Research Center, Korea Railroad Research Institute) ;
  • Seo, Sung Il (Emerging Transportation Technology Research Division Korea Railroad Research Institute) ;
  • Lee, Woo Geun (Railway System Engineering, University of Science and Technology)
  • Received : 2012.08.22
  • Accepted : 2012.09.17
  • Published : 2013.02.28

Abstract

In this study, the natural frequency and damping ratio of a four-harness satin woven glass/epoxy composite material are evaluated by means of modal tests and a finite element analysis. To achieve this goal, glass/epoxy beam specimens with different lengths and thicknesses were manufactured via autoclave curing. In the test, the maximum damping ratio was found to occur at the lowest test frequency. As the test frequency increased, the damping ratio decreased exponentially to a critical value. After that value, the damping ratio increased gradually to the maximum test frequency.

References

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  3. J.S. Kim, W.G. Lee (2012) Manufacturing and structural behavior evaluation of composite side beams using autoclave curing and resin transfer moulding method, International Journal of Precision Engineering Manufacturing, 13, pp. 723-730. https://doi.org/10.1007/s12541-012-0094-3
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