Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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Characterization and Fatigue Life Evaluation of Rubber/Clay Nanocomposites

고무-점토 나노복합체 물성 및 피로내구성 평가

  • 우창수 (한국기계연구원 나노융합시스템연구본부) ;
  • 박현성 (한국기계연구원 나노융합시스템연구본부) ;
  • 조득환 ((주)금강알텍) ;
  • 전영식 ((주)금강알텍)
  • Received : 2011.04.08
  • Accepted : 2011.06.07
  • Published : 2011.10.01
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Abstract

Nanocomposites were prepared through the compounding of rubber and clay. Measurements of the static and dynamic mechanical properties of different compositions over a temperature range $70-100^{\circ}C$ showed that the mechanical properties of these rubber/clay nanocomposites are superior to those of existing rubber materials. In this study, by using the parameter of the maximum Green.Lagrange strain appearing at certain locations, the relationship between fatigue life and maximum Green.Lagrange strain, and the correlations between test-piece tests and bench tests of actual rubber components are proved. In order to predict the fatigue life of rubber components at the design stage, a simple procedure of life prediction is suggested. The predicted fatigue lives of the rubber engine mounts agree fairly well with the fatigue lives determined experimentally.

실리게이트의 층간에 나노충진제를 삽입하여 합성한 고무-점토 나노복합체에 대해 $70-100^{\circ}C$의 고온상태에서 정적 및 동적시험을 수행하여 기존 고무소재보다 기계적 물성이 우수함을 확인하였다. 또한, 본 연구에서는 부품의 취약부위에서 발생하는 최대 그린-라그랑지 변형률을 피로손상변수로 하여 설계 초기단계에서도 짧은 기간에 고무부품의 피로수명을 예측할 수 있는 방법을 개발하여 피로내구성을 평가한 결과, 실제 엔진마운트에 대한 피로시험을 통해 얻어진 피로수명과 예측수명이 비교적 정확하게 예측됨을 확인하였다.

Keywords

References

  1. Gent, A. N. and Lake, G. J., 1992, "Engineering with Rubber," Hanser publication.
  2. Woo, C. S., Choi, S. S. and Lee, S. B., 2010, "Useful Lifetime Prediction of Rubber Components Using Accelerated Testing," IEEE Transaction, Vol. 59, No. 1, pp. 11-17.
  3. Kirchhoff, M., Specht, U. and Veser, G., 2004, "Synthesis and Charactericzation of Novel High-Temperature Stable Nanocomposite Catalysts," Nanotech, Vol. 3, pp. 268-271.
  4. Ochsner, A., Ahmed, W. and Ali, N., 2009, "Nanocomposite Coatings and Nanocomposite Materials," Material Science Foundations, Vol. 54-55, pp. 402.
  5. Kawasumi, M., Hasegawa, M., Kato, A. and Usuki, A., 1997, "Preparation and Mechanical Properties of Polypropylene-Clay Hybrids," Macromolecules, Vol.30, No.20, pp. 6333-6338. https://doi.org/10.1021/ma961786h
  6. Brown, R.P., 1990, "Physical testing of rubber elastic" 3rd ed., Chapman & Hill,
  7. Woo, C. S., Kim, W. D. and Kwon, J. D., 2008, " A Study on the Material Properties and Fatigue Life Prediction of Natural Rubber Component," Materials Science and Engineering, Vol. 483-484, pp. 376-381. https://doi.org/10.1016/j.msea.2006.09.189