Composites Part C Open Access最新文献_第3页

A review on the yarn pull-out behavior of high-performance woven fabrics for impact resistance 高性能机织物抗冲击拔纱性能研究进展

IF 7 Q2 MATERIALS SCIENCE, COMPOSITES

Composites Part C Open Access

Pub Date : 2025-10-01 DOI: 10.1016/j.jcomc.2025.100658

Hanyuan Pan , Jinzheng Liu , Jiang Xie , Zhenyu Feng

High-performance woven fabrics have been widely used in transportation, military, and so on, due to their low density and superior mechanical properties. These structures are commonly exposed to impact loading, including bullets, fragments and blast waves. Yarn interaction is one of the key affecting the impact resistance of fabrics, and methods and results of aramid and ultra-high molecular weight polyethylene yarn pull-out test are mainly reviewed. The factors, including fabric configuration, pull-out speed, inter-yarn friction and so on, affecting the peak pull-out force (PPF) of yarn are summarized in detail. Moreover, the influencing mechanisms of these factors are discussed and revealed by comparison of previous studies. The results indicate that most factors have unified conclusions on the influence of PPF. However, Few conclusions still exist differences, such as whether the relationship of number of pulled yarns and PPF is liner or non-liner, but have been clarified in this paper. Furthermore, the influencing mechanism has become clearer after discussion, but so far, it still remains at the qualitative level. In future research, further standardization of yarn pull-out test is needed to obtain more comparable data. In addition, it is recommended to conduct more yarn pull-out research on the influencing results and mechanisms of these factors under dynamic loading.

高性能机织物以其低密度和优越的机械性能，在交通运输、军事等领域得到了广泛的应用。这些结构通常暴露在冲击载荷下，包括子弹、碎片和冲击波。纱线相互作用是影响织物抗冲击性能的关键之一，本文主要综述了芳纶和超高分子量聚乙烯纱线的拉拔试验方法和结果。详细总结了织物形态、抽拔速度、纱线间摩擦等因素对纱线最大抽拔力（PPF）的影响。并通过与前人研究的比较，探讨和揭示了这些因素的影响机制。结果表明，大多数因素对PPF的影响有统一的结论。然而，关于拉纱数与PPF的关系是线性关系还是非线性关系等少数结论仍存在分歧，本文对此进行了澄清。此外，经过讨论，其影响机制也更加清晰，但目前仍停留在定性层面。在今后的研究中，需要进一步规范抽纱试验，以获得更多可比较的数据。此外，建议对这些因素在动载下的影响结果和机理进行更多的拔纱研究。

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引用次数: 0

Eigenmode-based inverse identification and multi-parameter sensitivity analysis of flax/Elium® laminates from unidirectional to cross-ply configurations validation 基于特征模型的亚麻/Elium®层压板从单向到交叉配置验证的反识别和多参数灵敏度分析

IF 7 Q2 MATERIALS SCIENCE, COMPOSITES

Composites Part C Open Access

Pub Date : 2025-10-01 DOI: 10.1016/j.jcomc.2025.100682

Ameny Ketata , Zouhaier Jendli , Mondher Haggui , Abderrahim El Mahi , Anas Bouguecha , Mohamed Haddar

This article presents an extended validation of a previously developed inverse identification method, initially applied to unidirectional (UD) flax/Elium® laminates. The study aims to (i) confirm the robustness of the ply-level inverse approach under more complex cross-ply configurations and (ii) identify the dominant mechanical parameters influencing the vibration behavior of biocomposites beyond UD layouts. A comprehensive sensitivity analysis is conducted to assess the influence of material and geometrical parameters on the first seven vibration modes. While E1 and G12 predominantly govern the dynamic response in UD laminates, cross-ply configurations reveal additional influences from the transverse modulus E2 and interlaminar shear modulus G13. Enhanced coupling effects involving G12 are also observed. Structural variability is considered through parameters such as thickness and density, which reflect the heterogeneous nature of bio-based materials. A compensation mechanism is highlighted: increased thickness raises stiffness but also adds mass, partially offsetting frequency gains. The study demonstrates a progressive transition in dominant mechanical parameters across modes: lower modes (f1, f2) are controlled by E1, while higher modes become increasingly sensitive to G12, G13, and, to a lesser extent, E2. The proposed inverse method shows excellent agreement between simulated and experimental modal responses for both 4-ply and 8-ply laminates. The genetic algorithm converges toward realistic values—thickness between 3,03 mm and 3,17 mm and density around 1292 kg/m³—confirming the robustness of the approach. By accounting for both material variability and process-induced dispersion, the method contributes to more reliable modeling and optimized design of natural fiber composites.

本文提出了先前开发的反识别方法的扩展验证，最初应用于单向（UD）亚麻/Elium®层压板。该研究旨在(i)确认在更复杂的交叉铺层结构下铺层级逆方法的鲁棒性，以及（ii）确定在UD布局之外影响生物复合材料振动行为的主要力学参数。对材料和几何参数对前7种振型的影响进行了综合灵敏度分析。虽然E1和G12主导着UD层合板的动态响应，但横向模量E2和层间剪切模量G13对交叉层合板的动态响应有额外的影响。还观察到涉及G12的增强耦合效应。结构变异性是通过厚度和密度等参数来考虑的，这些参数反映了生物基材料的异质性。一个补偿机制被强调：增加的厚度提高了刚度，但也增加了质量，部分抵消了频率增益。研究表明，各模态的主要力学参数呈渐进式转变：较低的模态（f1, f2）受E1控制，而较高的模态对G12， G13越来越敏感，E2在较小程度上也越来越敏感。所提出的反方法表明，4层和8层复合材料的模拟模态响应与实验模态响应非常吻合。遗传算法收敛于实际值-厚度在3.03 mm和3.17 mm之间，密度在1292 kg/m³左右-证实了该方法的鲁棒性。该方法考虑了材料的可变性和工艺引起的分散，有助于更可靠的天然纤维复合材料建模和优化设计。

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引用次数: 0

A critical review on laser-assisted paint removal from carbon fibre-reinforced polymer: Insights into process parameters, material integrity, and numerical modelling 激光辅助去除碳纤维增强聚合物的油漆：对工艺参数、材料完整性和数值模拟的见解

IF 7 Q2 MATERIALS SCIENCE, COMPOSITES

Composites Part C Open Access

Pub Date : 2025-10-01 DOI: 10.1016/j.jcomc.2025.100654

Shiyao Zhu , Jojibabu Panta , Richard (Chunhui) Yang , Lin Ye , Y.X. Zhang

Laser-based paint stripping has emerged as a precise, efficient, and environmentally sustainable technique for removing paints/coatings from carbon fibre-reinforced polymer (CFRP) composites. This review presents a comprehensive analysis of laser-material interaction mechanisms that govern paint removal, including thermal ablation, thermally induced interfacial failure, plasma shock wave generation, and photochemical bond disruption. The influences of thermal and optical properties of CFRP and paint on interaction dynamics and removal behaviours are critically examined. The key laser processing parameters are systematically analysed in relation to stripping efficiency, substrate preservation, and thermal loading. Experimental methods used for monitoring process response and evaluating removal quality are also reviewed. Numerical modelling approaches based on the finite element method are discussed, with a focus on simulating transient heat transfer, interfacial stresses, and coupled effects. Limitations of current models in capturing the complexity of pulsed laser interaction with multilayered paint-composite structure are addressed. The review highlights that while laser stripping offers selective, damage-free paint removal, challenges remain in managing thermal effects, ensuring layer-specific selectivity, and achieving process scalability. Addressing these challenges is essential for translating laser-based stripping into reliable maintenance solutions for aerospace, defence, renewable energy, and automotive industries.

激光脱漆技术是一种精确、高效、环保的碳纤维增强聚合物（CFRP）复合材料脱漆技术。本文综述了影响涂料去除的激光与材料相互作用机制的综合分析，包括热烧蚀、热诱导界面破坏、等离子体冲击波产生和光化学键破坏。CFRP和涂料的热学和光学性质对相互作用动力学和去除行为的影响进行了严格的检查。系统地分析了激光加工的关键参数与剥离效率、衬底保存和热载荷的关系。本文还综述了用于监测过程响应和评价去除质量的实验方法。讨论了基于有限元方法的数值模拟方法，重点是模拟瞬态传热、界面应力和耦合效应。解决了当前模型在捕捉脉冲激光与多层涂料-复合材料结构相互作用的复杂性方面的局限性。该综述强调，虽然激光剥离提供了选择性、无损伤的油漆去除，但在管理热效应、确保层特异性选择性和实现工艺可扩展性方面仍然存在挑战。解决这些挑战对于将激光剥离转化为航空航天、国防、可再生能源和汽车行业的可靠维护解决方案至关重要。

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引用次数: 0

Quasi-static crushing analysis of doubly-curved sandwich shells with microlattice core: 3D-numerical simulation 微点阵双弯曲夹层壳的准静态破碎分析：三维数值模拟

IF 7 Q2 MATERIALS SCIENCE, COMPOSITES

Composites Part C Open Access

Pub Date : 2025-10-01 DOI: 10.1016/j.jcomc.2025.100672

Hosna Mahdavinia , Shahabeddin Hatami , Mojtaba Gorji Azandariani , Abbas Niknejad

Lightweight sandwich structures with microlattice cores have emerged as promising candidates for aerospace and automotive applications due to their high stiffness-to-weight ratio and superior energy-absorption capability. However, most previous studies have focused on flat configurations, and the mechanical response of doubly-curved sandwich shells with microlattice cores remains insufficiently explored. This study presents a numerical investigation into the quasi-static crushing behavior of flat and doubly-curved sandwich shells incorporating microlattice cores. The investigated structure consists of two metallic face-sheets bonded to a lightweight microlattice core with a body-centered cubic (BCC) topology, designed to enhance stiffness-to-weight ratio and energy absorption efficiency. Using finite element modeling with ABAQUS, nine distinct panel configurations were analyzed, varying in face-sheet thickness and curvature. The microlattice core was modeled using body-centered cubic (BCC) unit cells with both solid and beam elements, validated against experimental data. Results show that both curvature and face-sheet thickness significantly influence structural performance. Increased face-sheet thickness improves peak load capacity and stiffness, while doubly-curved panels exhibit enhanced load-bearing capacity compared to flat panels due to curvature-induced membrane stresses. The study establishes that doubly-curved sandwich shells with microlattice cores offer mechanical advantages over flat counterparts, especially when optimized for face-sheet thickness and curvature.

具有微晶格核心的轻质夹层结构由于其高刚度重量比和优异的能量吸收能力，已成为航空航天和汽车应用的有希望的候选者。然而，以往的研究大多集中在平面构型上，对微晶格核双弯曲夹层壳的力学响应研究尚不充分。本文对含有微点阵核的平面和双弯曲夹层壳的准静态破碎行为进行了数值研究。所研究的结构由两个金属面片连接到具有体心立方（BCC）拓扑的轻质微晶格核心组成，旨在提高刚度重量比和能量吸收效率。利用ABAQUS进行有限元建模，分析了9种不同的面板结构，它们的面板厚度和曲率都不同。微点阵核心采用体心立方（BCC）单元，采用实体单元和梁单元进行建模，并根据实验数据进行验证。结果表明，曲率和面板厚度对结构性能均有显著影响。增加的面板厚度提高了峰值载荷能力和刚度，而由于曲率引起的膜应力，双弯曲面板与平面面板相比具有更高的承载能力。该研究表明，与平面外壳相比，带有微晶格芯的双弯曲夹层外壳具有机械优势，特别是在对面板厚度和曲率进行优化时。

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引用次数: 0

Analysis of the compaction behavior of textile reinforcements in low-resolution in-situ CT scans via machine-learning and descriptor-based methods 基于机器学习和描述符的方法分析纺织品增强材料在低分辨率原位CT扫描中的压实行为

IF 7 Q2 MATERIALS SCIENCE, COMPOSITES

Composites Part C Open Access

Pub Date : 2025-10-01 DOI: 10.1016/j.jcomc.2025.100662

Christian Düreth , Jan Condé-Wolter , Marek Danczak , Karsten Tittmann , Jörn Jaschinski , Andreas Hornig , Maik Gude

A detailed understanding of material structure across multiple scales is essential for predictive modeling of textile-reinforced composites. Nesting — characterized by the interlocking of adjacent fabric layers through local interpenetration and misalignment of yarns — plays a critical role in defining mechanical properties such as stiffness, permeability, and damage tolerance. This study presents a framework to quantify nesting behavior in dry textile reinforcements under compaction using low-resolution computed tomography (CT). In-situ compaction experiments were conducted on various stacking configurations, with CT scans acquired at 20.22 µm per voxel resolution. A tailored 3D-UNet enabled semantic segmentation of matrix, weft, and fill phases across compaction stages corresponding to fiber volume contents of 50 % to 60 %. The model achieved a minimum mean Intersection-over-Union of 0.822 and an

F 1

score of 0.902. Spatial structure was subsequently analyzed using the two-point correlation function

S_{2}

, allowing for probabilistic extraction of average layer thickness and nesting degree. The results show strong agreement with micrograph-based validation. This methodology provides a robust approach for extracting key geometrical features from industrially relevant CT data and establishes a foundation for reverse modeling and descriptor-based structural analysis of composite preforms.

跨多个尺度的材料结构的详细了解是至关重要的纺织增强复合材料的预测建模。嵌套——其特点是相邻织物层通过纱线的局部穿插和错位而互锁——在确定机械性能（如刚度、渗透性和损伤容忍度）方面起着关键作用。本研究提出了一个框架来量化在低分辨率计算机断层扫描（CT）压实下干纺织增强材料的嵌套行为。在不同堆叠配置下进行了现场压实实验，CT扫描分辨率为20.22µm /体素。量身定制的3D-UNet可以在纤维体积含量为50%至60%的压实阶段对基质、纬纱和填充阶段进行语义分割。该模型的最小平均交复并度为0.822，F1得分为0.902。随后，利用两点相关函数S2对空间结构进行分析，从而实现平均层厚和嵌套度的概率提取。结果与基于显微照片的验证结果一致。该方法为从工业相关CT数据中提取关键几何特征提供了一种强大的方法，并为复合材料预成型的反向建模和基于描述符的结构分析奠定了基础。

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引用次数: 0

A hybrid approach for predicting fatigue life of fiber-reinforced polypropylene composite (PPGF40): Integrating micromechanical modelling 纤维增强聚丙烯复合材料（PPGF40）疲劳寿命预测的混合方法：集成微观力学模型

IF 7 Q2 MATERIALS SCIENCE, COMPOSITES

Composites Part C Open Access

Pub Date : 2025-10-01 DOI: 10.1016/j.jcomc.2025.100660

Mohammadali Shirinbayan , Samia Nouira , Jihed Zghal , Joseph Fitoussi

This paper presents a hybrid approach for predicting the fatigue life of PPGF40. The approach combines micromechanical modeling with empirical techniques, based on an intrinsic relationship. Micromechanical modeling is used to analyze the material's monotonic behavior. The study presents a micromechanical model, based on Mori and Tanaka's approach, for simulating damage at the fiber-matrix interface. The model incorporates a local criterion and linearizes the plastic behavior of the matrix using the secant modulus method. The model parameters are identified by comparing them with experimental stiffness reduction results, and S-N curves for different modeled orientations (0°, 45°, and 90°) are presented. The study concludes by establishing the Tsai-Wu fatigue failure criterion based on hybrid modeling results, demonstrating its usefulness in designing structures such as tailgates. The versatility of the micromechanical model extends to other microstructures upon validation. This methodology provides a framework for linking process, microstructure, and properties, and can be coupled in the future with microstructure prediction tools, such as Moldflow, to support fatigue optimization in PPGF40 and similar materials.

提出了一种预测PPGF40疲劳寿命的混合方法。该方法结合了基于内在关系的微观力学建模和经验技术。采用微观力学模型分析材料的单调行为。该研究提出了一个基于Mori和Tanaka方法的微观力学模型，用于模拟纤维-基质界面的损伤。该模型采用局部准则，并采用割线模量法线性化了矩阵的塑性行为。通过与试验刚度折减结果的对比，确定了模型参数，并给出了不同建模方向（0°、45°和90°）下的S-N曲线。最后，在混合模型的基础上建立了Tsai-Wu疲劳破坏准则，证明了其在尾板等结构设计中的有效性。微力学模型的多功能性在验证后扩展到其他微观结构。该方法为连接工艺、微观结构和性能提供了一个框架，并且可以在未来与微观结构预测工具（如Moldflow）相结合，以支持PPGF40和类似材料的疲劳优化。

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引用次数: 0

A local cohesive fatigue model for delamination growth: Model development and mode I investigations 分层生长的局部内聚疲劳模型：模型开发和模型I研究

IF 7 Q2 MATERIALS SCIENCE, COMPOSITES

Composites Part C Open Access

Pub Date : 2025-10-01 DOI: 10.1016/j.jcomc.2025.100664

James G. Finlay , Anthony M. Waas , Jonathan Bartley-Cho , Nav Muraliraj

A cohesive damage model for the simulation of fatigue driven delamination is presented and verified through analysis of a standard fatigue fracture test. The local model, which operates within the cohesive formulation of Nguyen and Waas, is based on the assumption that cyclic loading degrades fundamental cohesive properties resulting in the evolution of traction-separation laws with fatigue cycles. The evolution of cohesive properties is described by fatigue degradation laws, which in this work are functions of the fatigue cycle and a local equivalent separation measure. Employing the cycle-jump scheme, numerical fatigue analyses of double cantilever beam tests were performed. Mode I delamination onset and propagation rates are compared to experimental results for a carbon/epoxy composite material system. Numerical results show that the fatigue modeling methodology can reproduce experimentally observed behavior. Finally, results from sensitivity studies investigating the influence of fatigue model parameters on crack propagation rates are presented.

提出了一种用于模拟疲劳驱动分层的内聚损伤模型，并通过标准疲劳断裂试验进行了验证。该局部模型采用了Nguyen和Waas的黏性公式，其假设是循环加载会降低基本黏性，从而导致牵引-分离规律随疲劳循环而演变。黏合性能的演变是用疲劳退化规律来描述的，在这项工作中，疲劳退化规律是疲劳循环和局部等效分离测度的函数。采用循环跳变方案，对双悬臂梁试验进行了数值疲劳分析。研究了碳/环氧复合材料体系的I型分层发生速率和扩展速率。数值结果表明，疲劳建模方法可以再现实验观察到的行为。最后，给出了疲劳模型参数对裂纹扩展速率影响的敏感性研究结果。

引用次数: 0

Flax for composite reinforcement: Impact of middle lamella degradation on flax fibre bundle mechanical properties 复合增强用亚麻：中间片层降解对亚麻纤维束力学性能的影响

IF 7 Q2 MATERIALS SCIENCE, COMPOSITES

Composites Part C Open Access

Pub Date : 2025-10-01 DOI: 10.1016/j.jcomc.2025.100678

Margot Chalard , Coralie Buffet , Nicolas Brosse , Alessia Melelli , Mario Scheel , Pierre D’Arras , Alain Bourmaud , Christophe Baley

Flax fibre bundles, widely used in composite reinforcement, consist of elementary fibres bound by the middle lamella. They can be considered as unidirectional composite materials reinforced with discontinuous fibres. Their mechanical properties strongly depend on the quality of retting and subsequent treatments. This study analyses the sensitivity of bundle-scale tensile tests at two different gauge lengths to the degradation of the middle lamellae and cortical residues by comparing an under-retted (UR) and a well-retted (WR) batch with and without a chemical treatment using ethylenediaminetetraacetic acid (EDTA). Additional treatments with gamma irradiation and steam explosion were applied to evaluate their potential to improve bundles division especially in case of under-retting, without compromising the structural integrity and the mechanical properties of elementary fibres.

Morphological and thermogravimetric analyses showed that treated bundles have a lower moisture sorption and a higher cellulose content. Mechanical results revealed a 30 % drop in stress and strain at break with increasing retting, attributed to the degradation of cortical residues and middle lamellae due to improved bundles division. Tensile tests at higher gauge lengths (75 mm) revealed a higher sensitivity to the state of the middle lamellae. In particular, steam explosion caused up to 80 % reduced stress at break at a gauge length of 75 mm, demonstrating its great potential as a complement to retting. Conversely, gamma irradiation had minimal impact on the mechanical properties and the division of the bundles. These results are relevant for optimising the properties of flax fibre bundles and composite materials.

亚麻纤维束是一种被广泛应用于复合材料增强材料的纤维束，它是由由中间薄片粘合而成的初级纤维束。它们可以看作是由不连续纤维增强的单向复合材料。它们的力学性能在很大程度上取决于固化和后续处理的质量。本研究通过比较未充分焙烧（UR）和充分焙烧（WR）批次，以及未使用乙二胺四乙酸（EDTA）进行化学处理，分析了两种不同规格长度的束级拉伸试验对中间薄片和皮质残留物降解的敏感性。在不影响初级纤维结构完整性和机械性能的情况下，采用伽马射线照射和蒸汽爆炸等附加处理方法来评估它们改善纤维束分裂的潜力，尤其是在欠固化的情况下。形态学和热重分析表明，处理后的束具有较低的吸湿性和较高的纤维素含量。力学结果显示，断裂时应力和应变下降30%，随着收缩的增加，这是由于由于束分裂的改善，皮质残留物和中间薄片的降解。在较长厚度（75毫米）下的拉伸试验显示，对中间薄片的状态有较高的敏感性。特别是，在75毫米的表长下，蒸汽爆炸使断裂时的应力降低了80%，这表明了蒸汽爆炸作为制动补充的巨大潜力。相反，伽马辐照对机械性能和束的分裂影响最小。这些结果对优化亚麻纤维束和复合材料的性能具有重要意义。

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引用次数: 0

Feather keratin hydrolysates as sustainable binders for high-density fiberboards 羽毛角蛋白水解物作为高密度纤维板的可持续粘合剂

IF 7 Q2 MATERIALS SCIENCE, COMPOSITES

Composites Part C Open Access

Pub Date : 2025-10-01 DOI: 10.1016/j.jcomc.2025.100668

Nidal Del Valle Raydan , Anita Wronka , Grzegorz Kowaluk , Eduardo Robles

This study evaluates the potential of feather keratin hydrolysates, obtained through ultrasound-assisted alkaline hydrolysis at low and high temperatures, as sustainable binders for high-density fiberboards (HDFs). The performance of keratin-based adhesives was compared with that of current binders, namely urea-formaldehyde (UF) and soy protein isolate (SPI). Adhesives were applied at a content of 12%. Additionally, a second formulation using 15% keratin hydrolysate extracted at high temperature (KHT 15) was tested to assess the influence of binder loading. The mechanical and physical properties of the HDF panels—including modulus of rupture, modulus of elasticity, internal bond strength, screw withdrawal resistance, thickness swelling, water absorption, and surface wettability—were systematically evaluated. Both keratin formulations outperformed SPI and matched or surpassed UF in key performance indicators. Among them, keratin extracted at high temperature exhibited superior mechanical strength and moisture resistance, which may be related to the formation of stronger disulfide bonds. In particular, KHT 15 increased internal bond strength by 74% compared to UF and 96% compared to SPI, and reduced 24 h water absorption by 36% and 58% respectively. Keratin-based panels also retained higher water contact angles after 60 s, demonstrating improved surface hydrophobicity. Although keratin extracted at high temperature at 12% fulfilled the EN 622-5 standard for dry-use panels, increasing the content to 15% enabled compliance with the requirements for humid conditions, with TS below 30%. These results position keratin hydrolysates, particularly at high temperature, as viable, bio-based alternatives to synthetic and food-derived adhesives in engineered wood composites aligned with circular bioeconomy principles.

本研究评估了在低温和高温下通过超声波辅助碱性水解获得的羽毛角蛋白水解物作为高密度纤维板（HDFs）可持续粘合剂的潜力。并与目前常用的脲醛（UF）和大豆分离蛋白（SPI）粘结剂的性能进行了比较。胶粘剂用量为12%。此外，第二种配方使用高温提取的15%角蛋白水解物（kht15）进行测试，以评估粘合剂负载的影响。系统地评估了HDF板的机械和物理性能，包括断裂模量、弹性模量、内部粘结强度、螺杆抗拔性、厚度膨胀、吸水性和表面润湿性。两种角蛋白配方都优于SPI，并在关键性能指标上匹配或超过UF。其中，高温提取的角蛋白表现出优异的机械强度和抗湿性，这可能与形成更强的二硫键有关。特别是，kht15的内部结合强度比UF提高了74%，比SPI提高了96%，24 h吸水率分别降低了36%和58%。角蛋白基板在60秒后仍保持较高的水接触角，表明表面疏水性得到改善。虽然在高温下提取12%的角蛋白符合EN 622-5干用面板的标准，但将含量增加到15%可以符合潮湿条件的要求，TS低于30%。这些结果表明，角蛋白水解物，特别是在高温下，是符合循环生物经济原则的工程木复合材料中合成和食品衍生粘合剂的可行生物基替代品。

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引用次数: 0

Stacking sequence effects on compressive failure using pin-ended buckling test 用销端屈曲试验研究堆积顺序对压缩破坏的影响

IF 7 Q2 MATERIALS SCIENCE, COMPOSITES

Composites Part C Open Access

Pub Date : 2025-10-01 DOI: 10.1016/j.jcomc.2025.100675

Tobias Bianchi , Patricia Sucarrat-Riberaygua , Joël Serra , Christophe Bouvet , Léon Ratsifandrihana

A pin-ended buckling test, inspired by the work of Wisnom (M. Wisnom, 1992), was developed to assess the influence of strain gradients on the compressive failure strain of composite laminates. Experiments were carried out on laminates manufactured with unidirectional (UD) carbon/epoxy AS4/8552 prepegs, with full-field strain measurements obtained via digital image correlation. The influence of stacking sequence on compressive failure—specifically the effects of 0° ply thickness and the adjacent ply interface—was investigated by testing a range of cross-ply and quasi-isotropic specimens. To prevent premature tensile failure, a 2024 aluminium ply was bonded to the tensile side of the 8-ply and 16-ply specimens, following the approach described in (Bianchi et al. 2025). Comparisons between the different stacking sequences were carried out by analysing the evolution of the maximum compressive strain as a function of the strain gradient. Additionally, a comparative analysis was performed between scaled specimens—32-ply, 16-ply, and 8-ply—in both cross-ply and quasi-isotropic configurations. The experimental results confirmed the nonlinear character of the strain-gradient effect on compressive failure. Furthermore, they indicated that neither the 0° ply thickness nor the adjacent ply interface exert a significant influence on the material investigated. These observations differ from earlier models that predicted such effects.

受Wisnom （M. Wisnom, 1992）工作的启发，开发了一种销端屈曲试验，以评估应变梯度对复合材料层合板压缩破坏应变的影响。以单向（UD）碳/环氧树脂AS4/8552预垫层为实验材料，通过数字图像相关获得了全场应变测量结果。通过测试一系列交叉铺层和准各向同性试件，研究了铺层顺序对压缩破坏的影响，特别是0°铺层厚度和相邻铺层界面的影响。为了防止过早的拉伸失效，按照（Bianchi et al. 2025）中描述的方法，将2024铝合金层粘合到8层和16层试样的拉伸侧。通过分析最大压缩应变随应变梯度的变化规律，对不同叠加顺序进行了比较。此外，在交叉铺层和准各向同性配置下，对32层、16层和8层的缩放样品进行了比较分析。试验结果证实了应变梯度对压缩破坏的非线性影响。此外，他们还指出，0°层厚度和相邻层界面对所研究的材料都没有显著影响。这些观察结果与早期预测此类效应的模型不同。

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引用次数: 0