低速冲击下不连续CFRP层合板的冲击响应及损伤机制探讨,Polymer Composites

当前位置： X-MOL 学术 › Polym. Compos. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

低速冲击下不连续CFRP层合板的冲击响应及损伤机制探讨
Polymer Composites ( IF 4.8 ) Pub Date : 2023-07-14 , DOI: 10.1002/pc.27561
Lin Xiao _{1,

2,

3} , Chunrui Lu ₄ , Xiaodan Li _{1,

2} , Nuo Xu ₃ , Ting Zheng ₅ , Guanhui Wang _{1,

2} , Xiaodong Wang ₅ , Dongxing Zhang ₃

Affiliation

碳纤维增强聚合物复合材料（CFRP）因其优异的机械性能而被广泛应用于许多领域；然而，它们对低速冲击非常敏感。设计和制造了一种新型仿生结构，该结构具有软体动物贝壳珍珠质的“砖块和砂浆”排列，以增强碳纤维增强塑料的抗冲击性。还研究了该结构的冲击响应和冲击能量的吸收。基于表面和内部形貌分析了仿生结构的冲击损伤形式。结果表明，仿生结构可以降低碳纤维复合材料的冲击损伤。在相对较高的冲击能量下，观察到仿生结构的两种损伤行为。不连续结构通过较小的第一次损伤载荷和较大的第二次损伤变形来减少损伤，从而提高了CFRP的抗冲击能力。不连续结构在一定程度上抑制了纵向裂纹扩展，有效减少了碳纤维复合材料的损伤面积。因此，所提出的结构可以将材料的强度保留率提高约5%。此外，对三种结构的碳纤维复合材料冲击后压缩损伤模式进行了原创性的总结和分类。所提出的结构可以使材料的强度保留率提高约5%。此外，对三种结构的碳纤维复合材料冲击后压缩损伤模式进行了原创性的总结和分类。所提出的结构可以使材料的强度保留率提高约5%。此外，对三种结构的碳纤维复合材料冲击后压缩损伤模式进行了原创性的总结和分类。

"点击查看英文标题和摘要"

Exploration of impact response and damage mechanism of discontinuous CFRP laminates subjected to low velocity impact

Carbon fiber-reinforced polymer composites (CFRPs) are widely used in many fields because of their excellent mechanical properties; however, they are very sensitive to low velocity impact. A new-type biomimetic structure, which has a “bricks-and-mortar” arrangement of nacre from mollusk shells, was designed and manufactured for enhancing the impact resistance of the CFRPs. The impact response and absorption of impact energy of this structure were also investigated. Impact damage forms of the biomimetic structure were analyzed based on the surface and internal morphologies. The results indicate that biomimetic structure can decrease the impact damage of the CFRPs. Two damage behaviors of the biomimetic structure were observed under relatively higher impact energy. The discontinuous structure reduces the damage using a smaller load for the first damage and a larger deformation for the second damage, which improves the impact resistance of the CFRPs. The discontinuous structure restrains longitudinal crack propagation to a certain extent, effectively reducing the damaged area of the CFRPs. Thus, the proposed structure can increase the strength retention rate of the material by about 5%. In addition, the compression after impact damage modes of CFRPs with three types of structure are summarized and classified originally.

更新日期：2023-07-14

点击分享查看原文

点击收藏

阅读更多本刊新发论文本刊介绍/投稿指南