Abstract

In this paper, we study the properties and destruction mechanisms of ultra-high molecular weight polyethylene (UHMWPE) fiber and composite material (CM) based on it with a rigid and flexible matrix at the low-speed impact by the “impact break” (IB) method. A significant difference in the deformation behavior and destruction mechanisms upon impact of Dyneema®SK-75 UHMWPE fiber and the CM based on this fiber was experimentally found. The impact was found to have little effect on the properties of an isotropic UHMWPE fiber, while the properties of a fiber without a matrix under impact loading are several times higher than the properties of the CM based on this fiber. Upon impact, interaction occurs between the components of the CM, and such CM is an anisotropic material in which, from the first moment of impact loading to the CM destruction, a stepwise deformation mechanism is implemented: the so-called “stepwise ladder of deformation.” Step deformation is the main mechanism of deformation and destruction of anisotropic composite materials upon impact.

中文翻译：

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对纤维及基于它的复合材料的影响

摘要

在本文中，我们研究了超高分子量聚乙烯（UHMWPE）纤维和基于它的具有刚性和柔性基体的复合材料（CM）在低速冲击下通过“冲击断裂”的性能和破坏机制（ IB) 方法。实验发现，Dyneema®SK-75 UHMWPE 纤维和基于该纤维的 CM 在冲击时的变形行为和破坏机制存在显着差异。发现这种冲击对各向同性 UHMWPE 纤维的性能几乎没有影响，而在冲击载荷下没有基体的纤维的性能比基于这种纤维的 CM 的性能高几倍。在撞击时，CM 的组件之间会发生相互作用，这种 CM 是一种各向异性材料，其中从冲击载荷的第一时刻到 CM 破坏，实现了逐步变形机制：所谓的“变形阶梯”。阶跃变形是各向异性复合材料受冲击变形破坏的主要机制。