Intercrossed Microstructures of Hydroxyapatite Sheets of Tibia Bone
The observation of Scanning Electron Microscope (SEM) shows that a tibia bone is a kind of bioceramic composite consisting of hydroxyapatite layers and collagen protein matrix. All the hydroxyapatite layers are parallel with the surface of the bone and consist of numerous hydroxyapatite sheets. The observation also shows that there is a kind of intercrossed micro-structure of the hydroxyapatite sheets. In this kind of microstructure, the hydroxyapatite sheets in an arbitrary hydroxyapatite layer make a large intercrossed angle with the hydroxyapatite sheets in their adjacent hydroxyapatite layers. The maximum pullout force of the intercrossed microstructure, which is closely related to the fracture toughness of the bone, is investigated and compared with that of the parallel microstructure of the sheets through their representative models. The result of the investigation indicates that the maximum pullout force of the intercrossed microstructure is markedly larger than that of the parallel microstructure, which is experimentally verified.
tibia bone hydroxyapatite sheets intercrossed microstructure maximum pullout force
Bin Chen Quan Yuan Ji Luo Jinghong Fan
Department of Engineering Mechanics,College of Resource and Environment Science,Chongqing University Department of Engineering Mechanics,College of Resource and Environment Science,Chongqing University Department of Engineering Mechanics, College of Resource and Environment Science,Chongqing Universit Department of Engineering Mechanics,College of Resource and Environment Science,Chongqing University
国际会议
The 3rd International Conference of Bionic Engineering(第三届国际仿生工程会议ICBE10)
珠海
英文
77-81
2010-09-14（万方平台首次上网日期，不代表论文的发表时间）