Abstract

Cyclic compression tests were conducted on 2.5-μm-diameter nanolaminated graphene-aluminum (Al) composite pillars. The composite possessed three times higher damping coefficient than its pure Al counterpart, which was rationalized by the enhanced dislocation hindrance at the graphene/Al interfaces in the composites. Moreover, the cyclic compression of micro-pillars produced similar damping coefficients as the corresponding bulk sample, providing a novel and convenient approach to assess the cyclic deformation behavior and damping properties of structural materials.

中文翻译：

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压缩循环载荷下石墨烯-铝纳米层压复合材料柱的增强阻尼能力

摘要

循环压缩试验在2.5进行μ米直径的纳米层压石墨烯-铝（Al）的拼合柱。该复合材料的阻尼系数是其纯Al的三倍，这是由于复合材料中石墨烯/ Al界面处位错的增强所致。此外，微柱的循环压缩产生的阻尼系数与相应的大块样品相似，为评估结构材料的循环变形行为和阻尼特性提供了一种新颖而便捷的方法。