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首页> 外文期刊>Review of Agricultural Entomology >Impact behavior of sandwich structures made of flax/epoxy face sheets and agglomerated cork
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Impact behavior of sandwich structures made of flax/epoxy face sheets and agglomerated cork

机译：亚麻/环氧面板和凝聚软木器夹层结构的冲击行为

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摘要

The unremitting quest of natural and renewable materials able to replace their synthetic counterparts in high-performance applications has involved also sandwich structures. In this regard, the aim of this work is to characterize the impact response, in both high- and low-velocity conditions, of green sandwich structures made of agglomerated cork as core and flax/epoxy laminates as face sheets. Both bare cork, flax skins, and complete sandwich structures were subjected to impacts at three different energy levels representing the 25%, 50%, and 75% of the respective perforation thresholds. A gas gun was instead used to assess the high-velocity impact behavior of these green sandwich structures and evaluate their ballistic limit. This study shows that the buckling of cell walls of agglomerated cork enables to tailor the damage extension through-the-thickness in low-velocity impacts compared to traditional synthetic foams coupled with a considerable amount of energy absorption.
机译：无法在高性能应用中更换其合成对应物的自然和可再生材料的不懈寻求也涉及三明治结构。在这方面，这项工作的目的是在高速和低速条件下表征凝聚和低速条件的影响响应，其由聚集软木制成的绿色夹层结构作为核心和亚麻/环氧树脂层叠片作为面料片。裸木桶，亚麻皮和完全夹心结构受到三种不同能量水平的影响，表示相应穿孔阈值的25％，50％和75％。相反，燃气枪用于评估这些绿色三明治结构的高速冲击行为，并评估它们的弹道极限。本研究表明，与传统的合成泡沫相比，凝聚的软木塞的细胞壁的屈曲使得凝聚的软木塞的细胞壁能够根据具有相当大量的能量吸收的传统的合成泡沫来定制低速冲击的损坏延伸厚度。

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