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Microstructure study of fractured polar bear hair for toughening, strengthening, stiffening designs via energy dissipation and crack deflection mechanisms in materials
Molecular Systems Design & Engineering ( IF 3.2 ) Pub Date : 2021-06-21 , DOI: 10.1039/d1me00066g
Urszula Stachewicz 1
Affiliation  

Polar bear hair is known for its superior thermal insulation properties protecting from frigid water and freezing weather conditions. However, this microscopy study on polar bear hair is related to the investigation of the crack stopping mechanisms within its structure following the toughening mechanism principle used by nature. The inhomogeneous structure of polar bear hair consists of fiber bundles, tubules, membranes, porous medulla, and cuticle layers. Precisely, these types of material constructions help impact energy dissipation to protect materials before the failure and save animals via its multifunctionality. The multiscale structures are the key to adopting different physical properties in distinct sizes, from thermal insulation to the toughening, strengthening, and stiffening mechanisms in material designs.

中文翻译:

通过材料中的能量耗散和裂纹偏转机制进行增韧、强化、硬化设计的断裂北极熊毛的微观结构研究

北极熊毛以其卓越的隔热性能而闻名,可抵御寒冷的水和寒冷的天气条件。然而,这项对北极熊毛发的显微镜研究与遵循自然界使用的增韧机制原理对其结构内的裂纹停止机制的研究有关。北极熊毛发的不均匀结构由纤维束、小管、膜、多孔髓质和角质层组成。确切地说,这些类型的材料结构有助于冲击能量耗散,从而在失效之前保护材料并通过以下方式拯救动物它的多功能性。多尺度结构是采用不同尺寸的不同物理特性的关键,从隔热到材料设计中的增韧、强化和硬化机制。
更新日期:2021-07-01
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