Mechanical characterization of brushite and hydroxyapatite cements
Mechanical characterization of brushite and hydroxyapatite cements
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DOI：
10.1016/s0142-9612(01)00041-2
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发表时间：
2001-11-01
期刊：
影响因子：
14
通讯作者：
Zysset, P
中科院分区：
文献类型：
--
作者：
Charrière, E;Terrazzoni, S;Zysset, P
设计并完成了透钙磷石和沉淀羟基磷灰石水泥在潮湿条件下的压缩、拉伸和扭转试验。测量这三种载荷情况下的弹性和强度特性。对于每种水泥，全套强度数据拟合各向同性蔡武标准和相关系数确定。由于压缩杨氏模量比拉伸模量大约10%，因此将每种水泥的全部弹性数据拟合为圆锥形线性弹性模型。还观察到应力-应变曲线的滞后，表明这些水泥微观结构内的耗散机制。测量的力学性能与人类松质骨的比较证实了透钙磷石作为骨填充材料的适应症和羟基磷灰石骨水泥作为结构生物材料的潜力。(C)2001爱思唯尔科技有限公司版权所有。
Compression, tension and torsion tests were designed and completed successfully on a brushite and a precipitated hydroxyapatite cement in moist condition. Elastic and strength properties were measured for these three loading cases. For each cement, the full set of strength data was fitted to an isotropic Tsai-Wu criterion and the associated coefficients identified. Since the compressive Young's moduli were about 10% larger than the tensile moduli, the full set of elastic data of each cement was fitted to a conewise linear elastic model. Hysteresis of the stress-strain curves was also observed, indicating dissipation mechanisms within these cement microstructures. A comparison of the measured mechanical properties with human cancellous bone confirmed the indication of brushite as a bone filling material and the potential of the hydroxyapatite cement as a structural biomaterial. (C) 2001 Elsevier Science Ltd. All rights reserved.