Mechanism of High Fracture Strength of Bone

摘要：

Scanning electron microscope (SEM) observation showed that femur bone is a kind of bioceramic composite consisting of hydroxyapatite layers and protein matters. The hydroxyapatite layers are further composed of hydroxyapatite fiber sheets. The observation also showed that the hydroxyapatite fiber sheets possess very thin fiber shape. The thickness of the hydroxyapatite fiber sheets is within nanometer scale. The mechanism of the high fracture strength of the bone was investigated based on the microstructural characteristics of the hydroxyapatite fiber sheets and the theory of fracture mechanics. The result reveals that the thin fiber shape of the hydroxyapatite fiber sheets endows the bone with high fracture strength.

关键词： Femur bone composite hydroxyapatite fiber sheets nanometer scale fracture strength

作者: Bin CHEN Dagang YIN Quan YUAN Ji LUO Jinghong FAN

作者单位: College of Resource and Environment Science, Chongqing University, Chongqing 400044, China Key Labor College of Resource and Environment Science, Chongqing University, Chongqing 400044, China Division of Mechanical Engineering, Alfred University, Alfred, N Y 14802, USA

会议类型: 国际会议

会议名称: 11th IUMRS International Conference in Asia(第十一届国际材联亚洲材料大会 IUMRS-ICA 2010)

会议地点: 青岛

会议语种:英文

页码: 379-383

在线出版日期: 2010-09-25（万方平台首次上网日期，不代表论文的发表时间）