Abstract This work aims to quantify the effect of a diamond-like carbon coating (DLC) treatment of aramid fibres and to reveal the conversion of a fibre-level performance leap on the macroscale mechanical behaviour. The DLC-based coating is applied directly to the reinforcement and laminates are infused with an epoxy matrix. After characterisation of the coated surfaces, the performance of the composite is analysed via interlaminar shear testing, fatigue testing and damage tolerance testing, microbond tests, and 3D finite element simulation using a cohesive zone model of the interface. The results show that the coating treatment improves the fatigue life and the S-N curve slope for the laminates, while the residual strength after impact damage and environmental conditioning (water immersion at 60 °C) remains high. The scaling factor to convert the performance on macroscale was determined to be 0.17–0.39 for the DLC-based fibre treatment.

中文翻译：

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DLC 处理的芳纶纤维复合材料：为宏观性能定制纳米涂层

摘要 这项工作旨在量化芳纶纤维类金刚石碳涂层 (DLC) 处理的效果，并揭示纤维级性能飞跃对宏观力学行为的转化。基于 DLC 的涂层直接应用于增强材料，层压板注入环氧树脂基体。在对涂层表面进行表征后，通过层间剪切测试、疲劳测试和损伤容限测试、微结合测试和使用界面内聚区模型的 3D 有限元模拟来分析复合材料的性能。结果表明，涂​​层处理提高了层压板的疲劳寿命和SN曲线斜率，而冲击损伤和环境调节（60°C水浸）后的残余强度仍然很高。