Composites Research

The Korean Society for Composite Materials (한국복합재료학회)
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The Anisotropic and Viscoelastic Properties of Bone Tissue

근골격계의 골조직이 가지는 이방성 및 점탄성 특성

  • 김진성 (한국항공대학교 항공우주 및 기계공학과) ;
  • 권정식 (한국항공대학교 항공우주 및 기계공학과) ;
  • 노진호 (한국항공대학교 항공우주 및 기계공학과) ;
  • 이수용 (한국항공대학교 항공우주 및 기계공학과)
  • Published : 2012.02.28
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Abstract

In this research, biomechanical characteristics of the bone tissue are experimentally investigated. By using specimens of the bovine bone, the mechanical properties are obtained through tension and shear tests. In experiments, non-homogeneous and anisotropic properties with respect to longitudinal and transversal directions are observed. Moreover, the viscoelastic behavior in which modulus and strength properties are dependent on strain rates is analyzed. It is expected that a numerical damage model of the bone be efficiently established based on the results.

본 연구에서는 외부 충격에 의한 인체의 손상 정도를 수치적으로 예측하기 위한 인체의 근골격계 해석 모델을 제안하기에 앞서 골 조직이 가지는 기본적인 기계적 특성을 실험적으로 살펴보았다. 기계적 물성 시험의 결과, 골 조직의 위치에 따라 기계적 특성이 변화하는 비균질성을 확인하였다. 축 방향이 횡 방향에 비해 강도와 탄성계수가 2배 정도 높게 나타남을 통해 이방성 특성을 확인하였다. 점탄성 특성을 살펴보기 위해 시험 속도를 다르게 하여 시험을 수행한 결과 변형률 속도가 증가 할수록 강도 및 탄성계수가 높게 나타나는 결과를 확인하였다.

Keywords

References

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