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首页> 外文期刊>Acta biomaterialia >Mechanical characteristics of solid-freeform-fabricated porous calcium polyphosphate structures with oriented stacked layers.
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Mechanical characteristics of solid-freeform-fabricated porous calcium polyphosphate structures with oriented stacked layers.

机译：具有定向堆叠层的无固态成型多孔聚磷酸钙结构的机械特性。

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This study addresses the mechanical properties of calcium polyphosphate (CPP) structures formed by stacked layers using a powder-based solid freeform fabrication (SFF) technique. The mechanical properties of the 35% porous structures were characterized by uniaxial compression testing for compressive strength determination and diametral compression testing to determine tensile strength. Fracture cleavage surfaces were analyzed using scanning electron microscopy. The effects of the fabrication process on the microarchitecture of the CPP samples were also investigated. Results suggest that the orientation of the stacked layers has a substantial influence on the mechanical behavior of the SFF-made CPP samples. The samples with layers stacked parallel to the mechanical compressive load are 48% stronger than those with the layers stacked perpendicular to the load. However, the samples with different stacking orientations are not significantly different in tensile strength. The observed anisotropic mechanical properties were analyzed based on the physical microstructural properties of the CPP structures.
机译：这项研究解决了使用基于粉末的固体自由成型制造（SFF）技术由堆叠层形成的聚磷酸钙（CPP）结构的机械性能。通过用于确定抗压强度的单轴压缩测试和用于确定抗拉强度的径向压缩测试来表征35％多孔结构的机械性能。使用扫描电子显微镜分析断裂劈裂面。还研究了制造工艺对CPP样品微结构的影响。结果表明，堆叠层的取向对SFF制CPP样品的机械性能有很大影响。平行于机械压缩载荷堆叠的样品比垂直于载荷堆叠的样品强48％。然而，具有不同堆叠方向的样品的拉伸强度没有显着差异。基于CPP结构的物理微观结构分析了观察到的各向异性力学性能。

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