Composites Science and Technology最新文献_第3页

Effects of the inclusion shape, arrangement, and volume fraction on effective elastic moduli of two-dimensional two-phase composites 包合物形状、排列和体积分数对二维两相复合材料有效弹性模量的影响

IF 8.3 1区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composites Science and Technology

Pub Date : 2024-11-06 DOI: 10.1016/j.compscitech.2024.110953

Xuqian Liu , Hui Li , Shaobo Sun

The spatial arrangement and shape of inclusions can have a major impact on two-phase composites' mechanical properties. Few studies consider the coupling effects of these two factors on the effective elastic moduli of two-phase composites. This study introduces the circularity of inclusions to modify the three-point approximation (TPA) for quantitatively predicting the coupling effects of inclusion planar arrangement and shape. Two-dimensional particle packing structures of monosized particles are generated with polygons, superellipses, and superovals of different circularities and volume fractions via the ordered arrangement approach or the discrete element method. Then, the lattice model is conducted on the particle packing structures to verify the reliability of the modified TPA. The comparison between the theoretical calculation and the numerical simulation indicates that our modified TPA can predict the effects of planar arrangement, shape, and volume fraction of inclusions on the effective moduli. The proposed modified TPA offers fresh perspectives on comprehending intricate relationships between the macro-property and composition of composites.

夹杂物的空间排列和形状会对两相复合材料的机械性能产生重大影响。很少有研究考虑这两个因素对两相复合材料有效弹性模量的耦合效应。本研究引入了夹杂物的圆度来修正三点近似（TPA），以定量预测夹杂物平面布置和形状的耦合效应。通过有序排列法或离散元法，用不同圆度和体积分数的多边形、超椭球形和超椭球形生成单尺寸颗粒的二维颗粒堆积结构。然后，对颗粒堆积结构进行晶格模型计算，以验证修正 TPA 的可靠性。理论计算与数值模拟的比较表明，我们的改进型 TPA 可以预测夹杂物的平面布置、形状和体积分数对有效模量的影响。所提出的改进型 TPA 为理解复合材料宏观性能与成分之间的复杂关系提供了新的视角。

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引用次数: 0

Concurrent optimization of continuous carbon fiber-reinforced composites with multi-scale components considering the manufacturing constraint 考虑制造约束条件的多尺度连续碳纤维增强复合材料的并行优化

IF 8.3 1区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composites Science and Technology

Pub Date : 2024-11-06 DOI: 10.1016/j.compscitech.2024.110942

Bing Sun , Yue Xing , Pengyu Lv , Jin Zhou , Chunqi Liu , Huiling Duan , Xiubing Liang

This paper proposed a multi-scale components topology optimization method and a continuous printing paths planning strategy to satisfy the manufacturing constraint of continuous carbon fiber-reinforced composites. The optimal design was performed with a cantilever beam to demonstrate the effectiveness of the proposed method. The optimization result obtained by the proposed optimization method showed that the fiber orientation was consistent within each component, facilitating the subsequent manufacturing process. For comparative analysis, the optimal structures were also obtained by density-based topology optimization methods with traditional printing path strategies. The results of the comparison experiment showed that, compared with the specimens optimized by the solid orthotropic material with penalization (SOMP) method with off-set paths and the solid isotropic material with penalization (SIMP) method with zig-zag paths, the stiffness of the optimal specimens obtained by proposed multi-scale components optimization method with continuous printing paths was increased by 26.39% and 64.67%, respectively, and the peak load was increased by 50.45% and 37.53%, respectively. In addition, the proposed continuous printing paths planning strategy significantly reduced the defects during the manufacturing process to enhance the mechanical properties of the fabricated structures.

本文提出了一种多尺度构件拓扑优化方法和连续印刷路径规划策略，以满足连续碳纤维增强复合材料的制造约束。通过悬臂梁进行优化设计，证明了所提方法的有效性。所提出的优化方法得到的优化结果表明，每个组件内的纤维取向一致，有利于后续制造过程。为了进行对比分析，还采用了基于密度的拓扑优化方法和传统的印刷路径策略来获得最佳结构。对比实验结果表明，与采用偏移路径的各向同性固体材料优化法（SOMP）和采用之字形路径的各向同性固体材料优化法（SIMP）优化的试样相比，采用连续印刷路径的多尺度构件优化法优化的试样刚度分别提高了 26.39% 和 64.67%，峰值载荷分别提高了 50.45% 和 37.53%。此外，所提出的连续印刷路径规划策略大大减少了制造过程中的缺陷，从而提高了制造结构的力学性能。

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引用次数: 0

Symmetric sandwich–like rubber composites for “green” electromagnetic interference shielding and thermal insulation 用于 "绿色 "电磁干扰屏蔽和隔热的对称三明治夹芯橡胶复合材料

IF 8.3 1区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composites Science and Technology

Pub Date : 2024-11-06 DOI: 10.1016/j.compscitech.2024.110960

Zijian Wei , Yu Cheng , Yanran Sun , Yanhu Zhan , Yanyan Meng , Yuchao Li , Hesheng Xia , Xiancai Jiang

Electromagnetic interference (EMI) shielding rubber composites with thermally insulating properties are necessary for some specific sealing fields, but their fabrication is challenging because it is difficult to realize a balance between high electrical conductivity and low thermal conductivity. Herein, symmetric sandwich–like rubber composites composed of an unfoamed core sandwiched by two foamed layers were prepared using a layer-by-layer vulcanization procedure. Importantly, a segregated Fe₃O₄@carbon nanotube (Fe₃O₄@CNT) network was constructed within the entire composite. This structure improved the shielding effectiveness (SE) and decreased the thermal conductivity of Fe₃O₄@CNT/rubber composites. When the density of the foamed layers was 0.60 g/cm³, the thermal conductivity, electrical conductivity, and SE of the resultant composites were 0.14 W/m K, 21.5 S/m, and 40.7 dB, respectively, and their green index (g_s) was 2.13, implying that the prepared materials were “green” EMI-shielding composites. This study provides directions on fabricating EMI shielding materials with thermally insulating performance.

某些特定密封领域需要具有热绝缘性能的电磁干扰（EMI）屏蔽橡胶复合材料，但由于很难在高导电率和低导热率之间实现平衡，因此其制造具有挑战性。在此，我们采用逐层硫化法制备了对称的三明治状橡胶复合材料，该复合材料由一个未发泡芯材和两个发泡层组成。重要的是，在整个复合材料中构建了分离的 Fe3O4@碳纳米管（Fe3O4@CNT）网络。这种结构提高了屏蔽效果（SE），降低了 Fe3O4@CNT/ 橡胶复合材料的热导率。当发泡层的密度为 0.60 g/cm3 时，所得复合材料的热导率、电导率和 SE 分别为 0.14 W/mK、21.5 S/m 和 40.7 dB，绿色指数（gs）为 2.13，这意味着所制备的材料是 "绿色 "电磁干扰屏蔽复合材料。这项研究为制造具有热绝缘性能的 EMI 屏蔽材料指明了方向。

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引用次数: 0

A novel Taguchi-based approach for optimizing neural network architectures: Application to elastic short fiber composites 基于田口的优化神经网络架构新方法：应用于弹性短纤维复合材料

IF 8.3 1区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composites Science and Technology

Pub Date : 2024-11-05 DOI: 10.1016/j.compscitech.2024.110951

Mohammad Hossein Nikzad , Mohammad Heidari-Rarani , Mohsen Mirkhalaf

This study presents an innovative application of the Taguchi design of experiment method to optimize the structure of an Artificial Neural Network (ANN) model for the prediction of elastic properties of short fiber reinforced composites. The main goal is to minimize the computational effort required for hyperparameter optimization while enhancing the prediction accuracy. By utilizing a robust experimental design framework, the structure of an ANN model is optimized. This approach involves identifying a combination of hyperparameters that provides optimal predictive accuracy with the fewest algorithmic runs, thereby significantly reducing the required computational effort. The results suggested that the Taguchi-based developed ANN model with three hidden layers, 20 neurons in each hidden layer, elu activation function, Adam optimizer, and a learning rate of 0.001 can predict the anisotropic elastic properties of short fiber reinforced composites with a prediction accuracy of 97.71 %. Then, external validation of the proposed ANN model was done using experimental data, and differences of less than 10 % were obtained, indicating an appropriate predictive performance of the proposed ANN algorithm. Our findings demonstrate that the Taguchi method not only streamlines the hyperparameter tuning process but also substantially improves the algorithm's performance. These results highlight the potential of the Taguchi method as a powerful tool for optimizing machine learning algorithms, especially in scenarios where computational resources are limited. The implications of this study are far-reaching, offering insights for future research in the optimization of different algorithms for improved accuracies and computational efficiencies.

本研究创新性地应用了田口试验设计法来优化人工神经网络（ANN）模型的结构，以预测短纤维增强复合材料的弹性特性。主要目标是在提高预测精度的同时，最大限度地减少超参数优化所需的计算量。通过利用稳健的实验设计框架，可以优化 ANN 模型的结构。这种方法包括确定超参数组合，以最少的算法运行次数获得最佳预测精度，从而大大减少所需的计算工作量。结果表明，基于田口方法开发的具有三个隐层、每个隐层 20 个神经元、elu 激活函数、Adam 优化器和 0.001 学习率的方差分析网络模型可以预测短纤维增强复合材料的各向异性弹性特性，预测准确率达 97.71%。然后，利用实验数据对所提出的方差网络模型进行了外部验证，得到的差异小于 10%，表明所提出的方差网络算法具有适当的预测性能。我们的研究结果表明，田口方法不仅简化了超参数调整过程，还大大提高了算法的性能。这些结果凸显了田口方法作为优化机器学习算法的强大工具的潜力，尤其是在计算资源有限的情况下。这项研究意义深远，为今后优化不同算法以提高精确度和计算效率的研究提供了启示。

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引用次数: 0

Internal shear damage evolution of CFRP laminates ranging from −100 °C to 100 °C using in-situ X-ray computed tomography 利用原位 X 射线计算机断层扫描分析 -100 ℃ 至 100 ℃ CFRP 层压板的内部剪切损伤演变情况

IF 8.3 1区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composites Science and Technology

Pub Date : 2024-11-05 DOI: 10.1016/j.compscitech.2024.110959

Yingxue Bai, Zeang Zhao, Shengyu Duan, Panding Wang, Yuanchen Li, Hongshuai Lei

Carbon Fiber Reinforced Polymer (CFRP) composites have been widely used in aerospace due to their high specific stiffness, strength, and fatigue properties. However, the ambient temperature significantly influences CFRP's mechanical properties and damage evolution, deriving from the temperature effect on the microstructural behavior and the mesoscopic damage evolution. In this study, the temperature-dependent in-plane shear failure behavior of CFRP composites was investigated. In-situ X-ray Computed tomography (CT) tensile experiments of laminates ([45°/-45°]_2s) at RT, −100 °C, and 100 °C were carried out to study the in-plane shear failure mechanisms. The 3D fracture morphology was extracted with internal damage evolution process estimated and quantified. The in-situ 3D deformation fields of critical regions were acquired using the Digital Volume Correlation (DVC) method. The effect of temperature on strain field and the correlation between the high-strain region and the fracture location were analyzed. The results revealed the temperature correlations and failure mechanisms of CFRP's mechanical characteristics and internal damage evolution process. Compared to room temperature (RT), the delamination damage area of the sample increased by 80 % at 100 °C. Meanwhile, the shear modulus of CFRP decreases by 78.4 % from −100 °C to 100 °C, and the fracture strain increases by 95 % from RT to 100 °C. The DVC results indicated a dispersion of high-strain regions at −100 °C, reflecting the brittle damage characteristics, while an extensive ductile deformation region was captured at 100 °C. Fiber-matrix debonding is the dominant failure mode of composites under shear loading, whereas significant matrix cracking was observed at −100 °C and partial fiber pullout occurred at 100 °C.

碳纤维增强聚合物（CFRP）复合材料具有很高的比刚度、强度和疲劳性能，因此被广泛应用于航空航天领域。然而，环境温度对 CFRP 的机械性能和损伤演化有很大影响，这源于温度对微观结构行为和中观损伤演化的影响。本研究调查了 CFRP 复合材料随温度变化的面内剪切破坏行为。为了研究面内剪切破坏机理，研究人员对层压板（[45°/-45°]2s）在 RT、-100 ℃ 和 100 ℃ 下进行了原位 X 射线计算机断层扫描（CT）拉伸实验。提取了三维断裂形态，并对内部损伤演变过程进行了估计和量化。使用数字体积相关（DVC）方法获取了临界区域的原位三维变形场。分析了温度对应变场的影响以及高应变区域与断裂位置之间的相关性。结果揭示了 CFRP 机械特性和内部损伤演变过程的温度相关性和破坏机制。与室温（RT）相比，100 °C时样品的分层损伤面积增加了80%。同时，从-100 °C到100 °C，CFRP的剪切模量降低了78.4%，断裂应变从室温到100 °C增加了95%。DVC 结果表明，在-100 °C时，高应变区域分散，反映了脆性破坏特征，而在100 °C时，则捕捉到了广泛的韧性变形区域。纤维-基体脱粘是复合材料在剪切加载下的主要破坏模式，而在-100 °C时观察到明显的基体开裂，100 °C时出现部分纤维拉断。

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引用次数: 0

Expanded graphite encapsulation of nitrates for enhanced thermal transport: Mechanism insight and component screening 膨胀石墨封装硝酸盐以增强热传输：机理洞察与成分筛选

IF 8.3 1区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composites Science and Technology

Pub Date : 2024-11-05 DOI: 10.1016/j.compscitech.2024.110957

Kening Yan , Lin Qiu , Haimo Li, Ning Cao, Yanhui Feng

The efficient improvement of the heat transfer capability of high-temperature molten salts and the accurate measurement within the operating temperature range is vital for improving the efficiency of concentrating solar power devices. Through theoretical investigation, this paper explores different thermal properties including thermal conductivity, phase transition properties and interfacial interactions using a range of expanded graphite/nitrates (EG/nitrates). Molecular dynamics simulations reveal that the EG/eutectic salt (ES) exhibits optimal comprehensive properties. Experimentally prepared EG/ES composite phase change materials (PCMs), coupled with theoretical predictions, demonstrate exceptional thermal conductivity (2.2 W m⁻¹ K⁻¹) and a significant latent heat of phase change (>80 J g⁻¹). The calculation results of the interaction energy between the host-guest indicate that the strong interaction of the EG to ES restricts the molecule movement, leading to a weak temperature dependence of the thermal conductivity of the EG/ES composite PCM. This contrasts with the conventional understanding of PCM thermal conductivity, which typically exhibits a sharp change during the phase transition from solid state to liquid state. Additionally, the thermal response of 15 wt% EG/ES is increased by 27.2 % compared to pure ES, which effectively helps alleviate local overheating in practical applications. The progress made so far sheds light on the mechanism behind the improved heat transfer and storage performance of nitrate from a microscopic view, offering valuable theoretical insight for developing high-efficient nitrate PCMs in solar thermal power generation systems.

有效提高高温熔盐的传热能力并在工作温度范围内进行精确测量，对于提高聚光太阳能发电设备的效率至关重要。通过理论研究，本文利用一系列膨胀石墨/硝酸盐（EG/硝酸盐）探索了不同的热特性，包括热导率、相变特性和界面相互作用。分子动力学模拟显示，EG/共晶盐（ES）具有最佳的综合性能。实验制备的 EG/ES 复合相变材料（PCM）与理论预测相结合，显示出卓越的热导率（2.2 W m-1 K-1）和显著的相变潜热（80 J g-1）。主客体之间相互作用能的计算结果表明，EG 与 ES 之间的强相互作用限制了分子的运动，从而导致 EG/ES 复合 PCM 的热导率与温度关系不大。这与人们对 PCM 热导率的传统理解形成了鲜明对比，后者通常在从固态到液态的相变过程中表现出急剧变化。此外，与纯 ES 相比，15 wt% EG/ES 的热响应提高了 27.2%，这有助于有效缓解实际应用中的局部过热问题。目前取得的进展从微观角度揭示了硝酸盐改善传热和储热性能背后的机理，为在太阳能热发电系统中开发高效硝酸盐 PCM 提供了宝贵的理论依据。

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引用次数: 0

The critical role of size effect on internal damage and mechanical properties of flax fiber reinforced composites 尺寸效应对亚麻纤维增强复合材料内部损伤和机械性能的关键作用

IF 8.3 1区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composites Science and Technology

Pub Date : 2024-11-05 DOI: 10.1016/j.compscitech.2024.110958

Lulu Lei , Yiqiao Zhao , Zefei Cheng , Jieyu Chen , Sixian Yang , Tao Yu , Jinhong Fan , Yan Li , Jianzhuang Xiao

The effect of the size on the strength of laminated artificial fiber reinforced composites has been extensive discussed during the design of large composites structure. With the trial as the structures in aerospace, civil engineering, automobile industry, the scaling of the properties of plant fiber reinforced composite should be studied. In this paper, the size effect and failure mechanism of tensile and impact properties of flax fiber reinforced composites were valuated. The effects of different area, thickness and volume on the tensile properties of composites were explored. Additionally, the failure mechanism of size effect on tensile specimens was proposed through the damage morphologies of composites. It is found that the twist of fiber bundle plays an important role in the size effect of composite thickness. Besides, the relationship between impact properties and size effect of composites was conducted, including the size of hammer, different impact energy and sample size. The curves of different types of impact samples were normalized to verify the linear rule in response stage. The crack length after impact was measured and the size effect of crack length was discussed. The size effect of crack area was studied by calculating the crack area with ultrasonic C-scan. Different “size effects” between flax fibers and artificial fibers were explored. The results are expected to provide a theoretical basis for the structural design of plant fiber reinforced composites.

在大型复合材料结构设计过程中，尺寸对层状人工纤维增强复合材料强度的影响已被广泛讨论。随着航空航天、土木工程、汽车工业等领域结构的试制，植物纤维增强复合材料的性能缩放问题亟待研究。本文对亚麻纤维增强复合材料拉伸和冲击性能的尺寸效应和失效机理进行了评估。探讨了不同面积、厚度和体积对复合材料拉伸性能的影响。此外，还通过复合材料的损伤形态，提出了尺寸效应对拉伸试样的破坏机理。研究发现，纤维束的捻度在复合材料厚度的尺寸效应中起着重要作用。此外，还研究了复合材料冲击性能与尺寸效应之间的关系，包括冲击锤尺寸、不同冲击能量和试样尺寸。对不同类型冲击样品的曲线进行归一化处理，以验证响应阶段的线性规律。测量了冲击后的裂纹长度，并讨论了裂纹长度的尺寸效应。通过超声波 C 扫描计算裂纹面积，研究了裂纹面积的尺寸效应。探讨了亚麻纤维和人造纤维的不同 "尺寸效应"。研究结果有望为植物纤维增强复合材料的结构设计提供理论依据。

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引用次数: 0

Open source tool for Micro-CT aided meso-scale modeling and meshing of complex textile composite structures 用于复杂纺织复合材料结构的微计算机断层扫描辅助中尺度建模和网格划分的开源工具

IF 8.3 1区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composites Science and Technology

Pub Date : 2024-11-05 DOI: 10.1016/j.compscitech.2024.110940

Bin Yang , Yuwei Feng , Cédric Béguin , Philippe Causse , Jihui Wang

Volumetric image-based modeling of textile reinforcements and composites is favored over ideal geometric modeling because of its ability to represent complex structures in sufficient detail. Although several approaches were devised, there is still a scarcity of dedicated tools capable of effectively transferring pertinent information from images to high-fidelity models. This work presents the open source project, PolyTex, a Python-based object-oriented application that establishes a streamlined and reproducible workflow for such tasks. Dual kriging serves as the foundational theory for the parametric approach developed to represent, simplify, and approximate the morphology and topology of fiber tows. The code takes two types of input, either an explicit representation of tow geometry using point clouds or implicit representations, such as image masks representing fiber tows separately with grayscale values. Tailored APIs allow for smooth integration between PolyTex’s modeling capabilities and the simulation environments offered by OpenFOAM and Abaqus. Case studies on virtual testing of textile permeability were presented to demonstrate this capability. The modular and object-oriented design makes PolyTex a highly reusable and extensible tool that allows users to create a customized pipeline.

与理想的几何建模相比，基于体积图像的纺织加固材料和复合材料建模更受青睐，因为它能够充分展现复杂结构的细节。尽管已经设计出了多种方法，但能够有效地将相关信息从图像转移到高保真模型的专用工具仍然十分匮乏。本作品介绍了开源项目 PolyTex，这是一个基于 Python 的面向对象应用程序，它为此类任务建立了一个简化且可重复的工作流程。双克里金法是参数方法的基础理论，用于表示、简化和近似纤维束的形态和拓扑结构。代码接受两种类型的输入，一种是使用点云对纤维束几何形状进行显式表示，另一种是隐式表示，如用灰度值分别表示纤维束的图像掩膜。定制的应用程序接口（API）允许将 PolyTex 的建模功能与 OpenFOAM 和 Abaqus 提供的仿真环境顺利集成。为展示这一功能，演示了纺织品透气性虚拟测试的案例研究。模块化和面向对象的设计使 PolyTex 成为一种高度可重用和可扩展的工具，允许用户创建自定义管道。

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引用次数: 0

Ultra-high strength and flame retardant carbon aerogel composites with efficient electromagnetic interference shielding and superior thermal insulation via nano-repairing route 通过纳米修复途径实现具有高效电磁干扰屏蔽和优异隔热性能的超高强度阻燃碳气凝胶复合材料

IF 8.3 1区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composites Science and Technology

Pub Date : 2024-11-05 DOI: 10.1016/j.compscitech.2024.110949

Wei Wang , Chong Ren , Jiaxin Zheng , He Huang , Can Wu , Xiangyu Jin , Changqing Hong , Xinghong Zhang

Carbon aerogel composites (CAs) have received numerous attention for protection of aircraft due to their unique properties. However, the shrinkage mismatch between rigid fibers and carbon sources during carbonization dramatically weakens the performance of CAs, and no significant breakthroughs have been made. We propose a vacuum impregnation assisted nano-repairing (VINR) strategy to fabricate crack-free carbon fiber reinforced carbon aerogel (C_f/CA) composites with high strength, electromagnetic interference shielding and thermal insulation. The cross-confined, overlapping nano-CA particles greatly limits the shrinkage of the carbon source, conferring excellent mechanical properties to C_f/CA, and its compressive strength and modulus reaches 3.93 MPa and 69.96 MPa in XY direction and 2.03 MPa and 40.67 MPa in Z direction, respectively, at 5 % strain. In addition, C_f/CA exhibits significant thermal insulation (0.054 W/(m·K) at 25 °C under air condition) and superior electromagnetic interference shielding properties (EMI SE is ∼48.52 dB at a thickness of ∼2 mm). Herein, the structurally optimized C_f/CA provides a promising solution for multi-effect protection for critical electronic devices of aircraft in special service environments.

碳气凝胶复合材料（CA）因其独特的性能在飞机保护方面受到广泛关注。然而，碳化过程中刚性纤维与碳源之间的收缩不匹配极大地削弱了 CA 的性能，目前尚未取得重大突破。我们提出了一种真空浸渍辅助纳米修补（VINR）策略，用于制造具有高强度、电磁干扰屏蔽和隔热性能的无裂纹碳纤维增强碳气凝胶（Cf/CA）复合材料。在应变为 5% 时，Cf/CA 在 XY 方向的抗压强度和模量分别达到 3.93 兆帕和 69.96 兆帕，在 Z 方向的抗压强度和模量分别达到 2.03 兆帕和 40.67 兆帕。此外，Cf/CA 还具有显著的隔热性能（空气条件下 25 °C 时为 0.054 W/(m-K)）和优异的电磁干扰屏蔽性能（厚度为 2 mm 时 EMI SE 为 48.52 dB）。因此，结构优化的 Cf/CA 为特殊服务环境下飞机关键电子设备的多效应保护提供了一种可行的解决方案。

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引用次数: 0

Bioinspired ultra-fine hybrid nanocoating for improving strength and damage tolerance of composite fan blades in flexible manufacturing 生物启发超精细混合纳米涂层用于提高柔性制造中复合材料风扇叶片的强度和耐损伤性

IF 8.3 1区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composites Science and Technology

Pub Date : 2024-11-04 DOI: 10.1016/j.compscitech.2024.110956

Xianhe Cheng , Qigang Han , Yuzhang Huang , Mingdi Shi , Hexuan Shi , Mengxue Ji , Chuncai Yang

The ultrafine mineral bridges/bio-polymer hybrid structure inspired by nacreous is applied to the interface structure design of composite, aiming to address the high brittleness and low damage tolerance problems of carbon fiber composite fan blades (CFCFB). Herein, we present a simple and efficient approach, called the "cationic copolymer-mono micelle-mediated" method, to translate the nacre-inspired structure for developing micelles/ZnO hybrid nanocoating. The hybrid nanocoating was demonstrated to have remarkable characteristics such as ultrafine ZnO sizes, monodispersity, uniformity, and core-shell structure (diameters: ≈45 nm). Additionally, the coating process is simple, solvent-free, and seamlessly integrates with scalable carbon fiber manufacturing. Based on the nacre-inspired interface structure, the CFCFB exhibits high interlaminar strength (99.3 MPa), high stiffness (79 GPa), and high toughness (41.2 MPa m^1/2). This study provides a blueprint for bioinspired ultrafine nanostructure design in composites and inspires advanced manufacturing strategies for other promising engineering materials.

将受珍珠质启发的超细矿物桥/生物聚合物混合结构应用于复合材料的界面结构设计，旨在解决碳纤维复合材料风扇叶片（CFCFB）的高脆性和低损伤耐受性问题。在此，我们提出了一种简单高效的方法，即 "阳离子共聚物-单胶束介导 "法，将珍珠质启发结构转化为胶束/氧化锌混合纳米涂层的开发。结果表明，这种混合纳米涂层具有超细氧化锌尺寸、单分散性、均匀性和核-壳结构（直径：≈45 nm）等显著特点。此外，该涂层工艺简单、无溶剂，可与可扩展的碳纤维制造工艺无缝集成。基于珍珠光泽启发的界面结构，CFCFB 表现出高层间强度（99.3 兆帕）、高刚度（79 千兆帕）和高韧性（41.2 兆帕 m1/2）。这项研究为复合材料中的生物启发超精细纳米结构设计提供了蓝图，并为其他有前途的工程材料的先进制造策略提供了灵感。

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引用次数: 0