STF 浸渍凯夫拉纤维涂层 GFRP 复合材料结构在弹丸高速冲击下的能量吸收特性

IF 5 2区材料科学 Q1 MATERIALS SCIENCE, CHARACTERIZATION & TESTING

Polymer Testing Pub Date : 2024-09-25 DOI:10.1016/j.polymertesting.2024.108596

Enling Tang, Jiameng Hou, Ruizhi Wang, Yafei Han, Chuang Chen, Mengzhou Chang, Kai Guo, Liping He

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引用次数: 0

摘要

将 STF（剪切增稠液）浸渍凯夫拉纤维织物和玻璃纤维增强聚合物（GFRP）结合在一起而得到的新型 STF 浸渍凯夫拉纤维织物涂覆 GFRP（玻璃纤维增强聚合物）复合材料结构，与两种单独的结构相比，具有重量轻、能量吸收能力强的特点，因此具有很强的抗冲击能力。与两种单独的结构相比，STF（剪切增稠液）浸渍凯夫拉纤维和 GFRP 可获得较强的能量吸收能力，且重量轻，因此具有较强的抗冲击性。本文分别对 STF 浸渍凯夫拉纤维、GFRP 层压板和 STF 浸渍凯夫拉纤维涂覆 GFRP 层压结构进行了实验。基于可靠的数值模拟，分析了 STF 浸渍凯夫拉纤维织物、GFRP 层压板和 STF 浸渍凯夫拉纤维织物涂层 GFRP 层压结构中相同材料的宏观损伤和能量吸收特性。结果表明，STF 浸渍凯夫拉纤维涂层 GFRP 层压结构中的 GFRP 层压板和后部凯夫拉纤维比单独的 GFRP 层压板和 STF 浸渍凯夫拉纤维的损伤面积更大，在冲击过程中产生的挠度也更大。层压板前后凯夫拉纤维层数的增加和层压板厚度的增加使凯夫拉纤维吸收了更多的能量。如果要提高 GFRP 层压材料的能量吸收能力，可以减少前面凯夫拉纤维的层数，增加层压材料的厚度，并在层压材料的前层添加强度更大的材料。不过，增加玻璃纤维增强塑料层压板的厚度会降低层压结构的轻质要求。

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Energy absorption characteristics of STF impregnated Kevlar fabric coating GFRP composite structure by projectile high-velocity impact

The new STF impregnated Kevlar fabric coated GFRP (glass fiber reinforced polymer) composite structure obtained by combining STF（shear thickening fluid） impregnated Kevlar fabric and GFRP can obtain strong energy absorption capacity with light weight compared with two separate structures, so it has strong impact resistance. In this paper, the experiments of STF impregnated Kevlar fabric, GFRP laminated plate and STF impregnated Kevlar fabric coating GFRP laminated structure were carried out, respectively. Based on reliable numerical simulation, the macroscopic damage and energy absorption characteristics of the same material in STF impregnated Kevlar fabric, GFRP laminated plate and STF impregnated Kevlar fabric coating GFRP laminated structure were analyzed. The results show that the GFRP laminate and the rear Kevlar fabric in the STF-impregnated Kevlar fabric coating GFRP laminate structure show a larger damage area than that of GFRP laminate and STF impregnated Kevlar fabric alone, and a larger deflection is generated during the process of impact. The increase of the number of layers of Kevlar fabric in the front and back of the laminate and the increase of the thickness of the laminate make the Kevlar fabric absorb more energy. If the energy absorption capacity of GFRP laminates is increased, the number of layers of the front Kevlar fabric can be reduced, the thickness of the laminates can be increased, and materials with greater strength can be added to the front ply of the laminates. However, increasing the thickness of GFRP laminates will reduce the lightweight requirements of laminated structures.

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来源期刊

Polymer Testing 工程技术-材料科学：表征与测试

CiteScore

10.70

自引率

5.90%

发文量

328

审稿时长

44 days

期刊介绍： Polymer Testing focuses on the testing, analysis and characterization of polymer materials, including both synthetic and natural or biobased polymers. Novel testing methods and the testing of novel polymeric materials in bulk, solution and dispersion is covered. In addition, we welcome the submission of the testing of polymeric materials for a wide range of applications and industrial products as well as nanoscale characterization. The scope includes but is not limited to the following main topics: Novel testing methods and Chemical analysis • mechanical, thermal, electrical, chemical, imaging, spectroscopy, scattering and rheology Physical properties and behaviour of novel polymer systems • nanoscale properties, morphology, transport properties Degradation and recycling of polymeric materials when combined with novel testing or characterization methods • degradation, biodegradation, ageing and fire retardancy Modelling and Simulation work will be only considered when it is linked to new or previously published experimental results.