Korean Journal of Applied Biomechanics (한국운동역학회지)

Korean Society of Applied Biomechanics (한국운동역학회)
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The Comparative Analysis on Mechanical Property Test of Carbon Nanotube-based Shock Absorbers

탄소나노튜브를 기반으로 하는 충격흡수제의 물리적 특성 비교분석

  • Kim, Jong-Woo (Department of Physical Education, Graduate School of Education, Kyungpook National University) ;
  • Chae, Woen-Sik (Department of Physical Education, College of Education, Kyungpook National University)
  • 김종우 (경북대학교 교육대학원 체육학과) ;
  • 채원식 (경북대학교 사범대학 체육교육과)
  • Received : 2012.04.30
  • Accepted : 2012.06.10
  • Published : 2012.06.30
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Abstract

The purpose of this study was (a) to develop carbon nanotube-based shock absorbers for reducing potentially harmful impact forces and excessive foot pronation, and (b) to briefly determine how the effects of carbon nanotube-based shock absorbers on biomechanical variance during drop landing. A university student(age: 24.0 yrs, height: 176.2 cm, weight: 679.5 N) who has no musculoskeletal disorder was recruited as the subject. Hardness, specific gravity, tensile strength, elongation, 100% modulus, tear strength, split tear strength, compression set, resilience, vertical GRF, and loading rate were determined for each material. For each dependent variable, a descriptive statistics was used for different conditions. The property test results showed that tensile strength, tear strength, split tear strength, compression set, and resilience in carbon nanotube-based shock absorbers were greater than general Ethylene Vinyl Acetate(EVA). These indicated that resistance against variable strength in developed carbon nanotube-based shock absorbers were greater than general EVA. In vertical GRF of CNTC was less than those of EVA during drop landing and loading rate of CNTC was greater than EVA. It seems that the use of CNT can be a effective way of reducing and controlling shock from impact.

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References

  1. Bobbert, M. F., Huijing, P. A., & van Ingen Schenau, G. J.(1987). Drop jumping II. The influence of dropping height on the biomechanics of drop jumping. Medicine and Science in Sports and Exercise, 19, 339-346.
  2. Byrne, M. T., & Gun'ko, Y. K.(2010). Recent on carbon nanotube-polymer composites. Advanced Materials, 22, (13), 1672-1688. https://doi.org/10.1002/adma.200901545
  3. Cao, A., Dickrell, P. L., Sawyer, W. G., Ghasemi-Nejhad, M. N., & Ajayan, P. M.(2005). Super-compressible foamlike carbon nanotube films. Science, 310, 1307-1310. https://doi.org/10.1126/science.1118957
  4. Gibson, L. J.(2000). Mechanical behavior of metallic foams Annual Review of Materials. Science, 30, 191-227.
  5. Jo, S. C.(1999). Biomechanical analysis of bare foot landing and shod foot landing in dropJump. International Journal of Human Movement Science, 38(3), 715-725.
  6. Lees, A.(1981). Methods of impact absorption when landing from a jump. Engineering in Medicine, 10(4), 207-211. Worthington, OH: Bertec Corporation. https://doi.org/10.1243/EMED_JOUR_1981_010_055_02
  7. Nigg, B. M., & Bobbert, M.(1990). On the potential of various approach in load analysis to reduce the frequency of sports injuries. Journal of Biomechanics, 23, 3-12. https://doi.org/10.1016/0021-9290(90)90036-3
  8. Stacoff, A., Kaelin, X., & Stuessi, E.(1988). The impact in landing after a volleyball block. In: Biomechanics XI-B. Amsterdam, the Netherlands: Free University Press. 694-700.
  9. Suhr, O., Koratkar, N., Keblinski, P., & Ajayan, P.(2005). Viscoelasticity in carbon nanotube composites. Journal of Nature Materials, 4, 134-137. https://doi.org/10.1038/nmat1293
  10. Zhao, B., Wang, J., Li, Z. J., Liu, P., Chen, D., & Zhang, Y.(2008). Mechanical strength improvement of polypropylene threads modified by PVA/CNT composite coatings. Materials Letters, 62, 4380-4382. https://doi.org/10.1016/j.matlet.2008.07.037

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