碳纳米管增强CFRTP非线性力学性能的多尺度研究：碳纳米管接枝界面相与碳纳米管分散基体增强效果的比较

IF 14.2 1区材料科学 Q1 ENGINEERING, MULTIDISCIPLINARY

Composites Part B: Engineering Pub Date : 2025-06-13 DOI:10.1016/j.compositesb.2025.112720

Yasutomo Uetsuji , Yusei Fujiwara , Fumiya Araki , Kotomi Onishi , Koshi Iwata , Yuki Murakami , Chao Luo , Kazuto Tanaka

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引用次数: 0

摘要

研究了碳纳米管（CNT）作为碳纤维增强热塑性塑料（CFRTP）二次增强材料的效果，CFRTP广泛应用于汽车、飞机等领域。采用渐近均匀化理论进行尺度耦合，构建了层次多尺度有限元分析格式。首先，采用化学气相沉积法对表面接枝CNTs的CF进行单纤维拔出试验，并对接枝CNTs CF的有限元模型进行验证。其次，在多尺度有限元分析的基础上，系统比较了CNTs接枝增强CF与基体界面相和CNTs分散在基体中的情况下的力学性能。结果表明，当碳纳米管含量为2.0 vol%或更低时，接枝碳纳米管界面相对横向纤维和面外剪切性能是有效的。当碳纳米管含量大于等于3.0 vol%时，碳纳米管分散基体对CFRTP的面内和面外剪切性能都有影响，这为碳纳米管增强CFRTP的设计提供了重要的指导。

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Multiscale study on nonlinear mechanical properties of CNT-reinforced CFRTP: Comparison of reinforcing effects of CNT-grafted interphase and CNT-dispersed matrix

The effect of carbon nanotube (CNT) as a secondary reinforcement material for carbon fiber reinforced thermoplastics (CFRTP), which are used in a wide range of fields such as automobiles and aircrafts, was examined. An asymptotic homogenization theory was adopted for scale coupling, and a hierarchical multiscale finite element analysis (FEA) scheme was constructed. First, single fiber pull-out tests were performed on CF with CNTs grafted on its surface by chemical vapor deposition, and the FEA model of CNT-grafted CF was verified. Next, based on the multiscale FEA, the mechanical properties of the case where the interfacial phase between the CF and the matrix was reinforced by CNTs grafting and the case where CNTs were dispersed in the matrix were systematically compared. As a result, the computation revealed that the CNT-grafted interfacial phase was effective for the transverse fiber and out-of-plane shear properties when the CNT content was 2.0 vol% or less. It also revealed that the CNT-dispersed matrix was effective for the in-plane and out-of-plane shear properties when the CNT content was 3.0 vol% or more, providing an important design guideline for CNT-reinforced CFRTP.

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来源期刊

Composites Part B: Engineering 工程技术-材料科学：复合

CiteScore

24.40

自引率

11.50%

发文量

784

审稿时长

21 days

期刊介绍： Composites Part B: Engineering is a journal that publishes impactful research of high quality on composite materials. This research is supported by fundamental mechanics and materials science and engineering approaches. The targeted research can cover a wide range of length scales, ranging from nano to micro and meso, and even to the full product and structure level. The journal specifically focuses on engineering applications that involve high performance composites. These applications can range from low volume and high cost to high volume and low cost composite development. The main goal of the journal is to provide a platform for the prompt publication of original and high quality research. The emphasis is on design, development, modeling, validation, and manufacturing of engineering details and concepts. The journal welcomes both basic research papers and proposals for review articles. Authors are encouraged to address challenges across various application areas. These areas include, but are not limited to, aerospace, automotive, and other surface transportation. The journal also covers energy-related applications, with a focus on renewable energy. Other application areas include infrastructure, off-shore and maritime projects, health care technology, and recreational products.