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首页> 外文会议>National Conference on Biomedical Engineering;International Iranian Conference on Biomedical Engineering >Effect of hydroxyapatite fiber’s shape on mechanical properties of calcium phosphate cement
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Effect of hydroxyapatite fiber’s shape on mechanical properties of calcium phosphate cement

机译：羟基磷灰石纤维形状对磷酸钙水泥力学性能的影响

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Calcium phosphate cements are one the best grafting materials in bone fracture repair. They are easily shapeable, bioactive, and biocompatible. These group of materials have lower fracture toughness and compressive strength, due to their porosity. For enhancement of some mechanical properties and reducing porosity, they are combined with materials such as hydroxyapatite fibers. This combination makes it possible to control and increase elastic modulus and compressive strength. The shape and the orientation of fibers can affect these parameters. In this study, mechanical properties of calcium phosphate cement which is enhanced by three different shaped fibers of hydroxyapatite is investigated via FEM simulation. Ratio of the fibers added in this composite cement is 10 vol.% and they are in spherical, ellipsoidal, and polyhedral shapes. Three specimens have about same elastic modulus but compressive strengths of each specimen and the stress distribution among the fibers are different.
机译：磷酸钙水泥是骨折修复中最好的接枝材料。它们易于塑造，生物活跃和生物相容性。由于它们的孔隙率，这些材料组具有较低的断裂韧性和抗压强度。为了提高一些机械性能和减少孔隙率，它们与诸如羟基磷灰石纤维的材料组合。这种组合使得可以控制和增加弹性模量和抗压强度。纤维的形状和方向可以影响这些参数。在该研究中，通过FEM模拟研究了三种不同成形纤维增强的磷酸钙水泥的力学性能。在该复合水泥中加入的纤维的比例为10体积％，它们是球形，椭圆形和多面体形状。三种样品具有截至相同的弹性模量，但每个样品的压缩强度和纤维之间的应力分布不同。

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