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首页> 外文期刊>International journal of design engineering >A novel manufacturing strategy for bio-inspired cellular structures
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A novel manufacturing strategy for bio-inspired cellular structures

机译：生物启发的细胞结构的新型制造策略

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摘要

This paper presents a novel manufacturing method for cellular materials with a graded porosity distribution. The motivation for creating a gradient of porosity in materials has been inspired by nature and aspires to mimic natural structures so their intrinsic advantages (e.g., optimised mechanical properties) can be exploited. Many engineering applications (e.g., thermal, acoustics, mechanical, structural and tissue engineering) require porosity tailored structures. However, current manufacturing processes are currently unable to mass-produce these foams. In this work, low power-low frequency ultrasonic irradiation has been used to excite polymeric foaming melts that, once solidified, contained different porosity distributions throughout in their solid matrix. This was possible by controlling the amount of energy imposed on the samples. The generation of porosity gradients that resembles those of natural cellular structures (e.g., bones, stems) opens up new opportunities in the design and manufacture of bio-inspired materials that can solve challenging technological problems.
机译：本文提出了一种具有梯度孔隙分布的新型多孔材料制造方法。在自然界中激发在材料中形成孔隙率梯度的动机并希望模仿自然结构，以便可以利用它们的固有优势（例如，优化的机械性能）。许多工程应用（例如，热，声学，机械，结构和组织工程）需要孔隙率定制的结构。但是，当前的制造工艺目前无法大量生产这些泡沫。在这项工作中，低功率-低频超声辐射已被用于激发聚合物发泡熔体，该熔体一旦固化，在其固体基质中始终具有不同的孔隙度分布。这可以通过控制施加在样品上的能量来实现。类似于天然细胞结构（例如骨头，茎）的孔隙度梯度的产生为设计和制造可解决挑战性技术问题的生物启发材料提供了新的机会。

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