Effect of fiber orientation on depth sensing intra-laminar failure of unidirectional CFRP under nano-scratching
Effect of fiber orientation on depth sensing intra-laminar failure of unidirectional CFRP under nano-scratching
复制标题
纳米划痕下纤维取向对单向CFRP深度传感层内失效的影响
DOI：
10.1016/j.compositesb.2021.109211
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发表时间：
2021-11
期刊：
影响因子：
--
通讯作者：
Tao Sun
中科院分区：
文献类型：
--
作者：
La Han;Junjie Zhang;Yuan Liu;Tao Sun
层内破坏行为在控制碳纤维增强聚合物（CFRP）复合材料的可加工性方面发挥着重要作用，具有很强的复杂性和多样性。在目前的工作中，我们阐明了层内失效机制的单向CFRP下变载荷纳米划痕试验的微观力学有限元模拟和相应的实验验证。模拟和实验结果揭示了纤维失效的多种断裂模式，以及它们与划痕力和表面完整性的相关性。此外，建立了一个微观力学分析模型，定量表征纳米划痕下的纤维偏转和亚表面损伤。最后，划痕深度和纤维取向的动态层内失效模式的转变的耦合效应进行了评估。研究结果为合理选择工艺参数提高CFRP复合材料的可加工性提供了理论依据。
Intra-laminar failure behavior, which plays an essential role in governing the machinability of carbon fiber reinforced polymer (CFRP) composites, exhibits strong complexity and variety. In the present work, we elucidate the intra-laminar failure mechanisms of unidirectional CFRP under varying-load nano-scratching tests by micromechanical finite element simulations and corresponding experimental validation. Simulation and experimental results reveal the multi-fracture modes of fiber failure, as well as their correlations with scratching force and surface integrity. Moreover, a micromechanical analytical model is established to quantitatively characterize fiber deflection and subsurface damage under nano-scratching. Finally, the coupled effect of scratching depth and fiber orientation on the dynamic transition of intra-laminar failure modes is evaluated. Current findings provide a theoretical basis for the rational selection of processing parameters for enhancing the machinability of CFRP composites.
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影响因子：
9.1
作者：
L. Mishnaevsky;P. Brøndsted
通讯作者：
L. Mishnaevsky;P. Brøndsted
影响因子：
9.1
作者：
Cheng, Hui;Gao, Jiaying;Liu, Wing Kam
通讯作者：
Liu, Wing Kam
影响因子：
9.1
作者：
Lasri, L.;Nouari, M.;El Mansori, M.
通讯作者：
El Mansori, M.
影响因子：
6.3
作者：
P. Sreejith;R. Krishnamurthy;S. K. Malhotra;K. Narayanasamy
通讯作者：
P. Sreejith;R. Krishnamurthy;S. K. Malhotra;K. Narayanasamy
DOI：
10.1080/00222346708212358
发表时间：
1967
期刊：
Journal of Macromolecular Science, Part B
影响因子：
--
作者：
L. Soffer;R. Molho
通讯作者：
L. Soffer;R. Molho