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Journal of Bionic Engineering

, Volume 5, Supplement 1, pp 9–13 | Cite as

Hydroxyapatite-Sheet Parallel Microstructure of Shinbone

  • Bin ChenEmail author
  • Xiang-he Peng
  • Shi-tao Sun
  • Jing-hong Fan
Article

Abstract

Bone is a natural biomaterial. It behaves favorable strength, stiffness and fracture toughness, which are closely related to its eximious microstructure. Scanning Electron Microscope (SEM) observation on a shinbone showed that the bone is a bioceramic composite consisting of laminated hydroxyapatite and collagen matrix. The hydroxyapatite layers are parallel with the surface of the bone and consist of long and thin hydroxyapatite sheets. The observation also showed that the hydroxyapatite sheets in different hydroxyapatite layers also parallel with each other, which composes a hydroxyapatite-sheet parallel microstructure. The maximum pullout energy of the parallel microstructure was investigated based on its representative model. It was shown that the long and thin shape of the hydroxyapatite sheets in the parallel microstructure is profitable to increase the maximum pullout energy and enhance the fracture toughness of the bone.

Keywords

shinbone hydroxyapatite sheets parallel microstructure maximum pullout energy fracture toughness 

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Copyright information

© Jilin University 2008

Authors and Affiliations

  • Bin Chen
    • 1
    Email author
  • Xiang-he Peng
    • 1
  • Shi-tao Sun
    • 1
  • Jing-hong Fan
    • 1
  1. 1.Department of Engineering Mechanics, College of Resource and Environment ScienceChongqing UniversityChongqingP. R. China

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