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Investigation on Mechanical Behavior of Biodegradable Iron Foams under Different Compression Test Conditions

机译：不同压缩试验条件下可生物降解铁泡沫的力学行为研究

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Biodegradable metal foams have been studied as potential materials for bone scaffolds. Their mechanical properties largely depend on the relative density and micro-structural geometry. In this work, mechanical behavior of iron foams with different cell sizes was investigated under various compression tests in dry and wet conditions and after subjected to degradation in Hanks’ solution. Statistical analysis was performed using hypothesis and non-parametric tests. The deformation behavior of the foams under compression was also evaluated. Results show that the mechanical properties of the foams under dry compression tests had a “V-type” variation, which is explained as a function of different geometrical properties by using a simple tabular method. The wet environment did not change the compression behavior of the iron foams significantly while degradation decreased the elastic modulus, yield and compression strengths and the energy absorbability of the specimens. The deformation of open cell iron foams under compression is viewed as a complex phenomenon which could be the product of multiple mechanism such as bending, buckling and torsion.
机译：已经研究了可生物降解的金属泡沫作为骨支架的潜在材料。它们的机械性能主要取决于相对密度和微观结构的几何形状。在这项工作中，研究了在干燥和潮湿条件下以及在汉克斯溶液中降解后，在各种压缩试验下，不同泡孔尺寸的铁泡沫的机械性能。使用假设和非参数检验进行统计分析。还评估了泡沫在压缩下的变形行为。结果表明，泡沫在干压缩试验下的机械性能具有“ V型”变化，这可以通过使用简单的表格方法解释为不同几何特性的函数。湿润的环境并没有明显改变泡沫铁的压缩行为，而降解降低了弹性模量，屈服强度和压缩强度以及样品的能量吸收能力。开孔铁泡沫在压缩状态下的变形被认为是一个复杂的现象，可能是弯曲，屈曲和扭转等多种机理的产物。

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