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力学与实践 ›› 2008, Vol. 30 ›› Issue (6): 77-80.doi: 10.6052/1000-0992-2007-536

• 应用研究 • 上一篇    下一篇

皮下组织对羟基磷灰石力学性质的影响

赵巍 侯振德 任朝峰 毕平   

  1. 天津大学机械工程学院力学系
  • 收稿日期:2007-12-10 修回日期:1900-01-01 出版日期:2008-12-08 发布日期:2008-12-08

INFLUENCE OF SUBCUTANEOUS TISSUE ON MECHANICAL PROPERTIES OF HYDROXYAPATITE

  • Received:2007-12-10 Revised:1900-01-01 Online:2008-12-08 Published:2008-12-08

摘要: 将羟基磷灰石试样植入大白鼠的皮下组织20\,d后取出,然后采用数字图像 相关方法研究纤维组织对人造羟基磷灰石的力学性质的影响. 测量了两种试样:植入大白鼠 皮下组织的羟基磷灰石试样和未经植入的羟基磷灰石试样. 得到了羟基磷灰石完整的应力- 应变曲线;还测量了压缩极限应力. 实验结果表明羟基磷灰石的应力-应变曲线在断裂前呈良 好的线性关系;皮下纤维组织能使羟基磷灰石材料的弹性模量和强度增加, 20\,d后使羟基磷 灰石的弹性模量增加了29.06{\%}, 压缩极限应力增加了28.71%.

关键词: 骨替代材料,羟基磷灰石,组织纤维,骨细胞,力学性质, 图像相关

Abstract: The mechanical properties of hydroxyapatites under the influence of subcutaneous tissues are tested using digital image correlation technique (DIC). Two groups of samples are tested. They are made of hydroxyapatite and hydroxyapatite implanted in rat subcutaneous for 20 days. The stress strain curves, without treatment of the all samples of the two groups are obtained. Both the Young's moduli and Poisson ratios are measured by DIC, and ultimate compressive stresses are also measured. The test results show that all samples of the two group give a linear stress strain relationship. The results also show that subcutaneous tissues increase Young's modului and compressive strength of hydroxyaptite by 29.06{\%} and 28.71{\%}, respectively.

Key words: bone substitute materials, hydroxyapatite, subcutaneous