【新文速递】2025年6月19日固体力学SCI期刊最新文章

今日更新：Composite Structures 5 篇，Composites Part A: Applied Science and Manufacturing 5 篇，Composites Part B: Engineering 2 篇Composite StructuresHierarchically engineered Sandwich-Structured h-MXene/ANF hybrid films with tunable electromagnetic interference shielding and exceptional environmental resilienceFan Xie, Qiaoling Liu, Longhai Zhuo, Haitao Wei, Yuxuan Shang, Tao Liu, Zhaoqing Ludoi:10.1016/j.compstruct.2025.119248 分层设计的三明治结构h-MXene/ANF混合薄膜具有可调谐的电磁干扰屏蔽和卓越的环境弹性High-performance electromagnetic interference (EMI) shielding materials with lightweight, multi-resistant properties and superior, tunable EMI shielding performance are urgently needed for next-generation integrated electronic and communication systems, particularly in portable smart devices and artificial intelligence applications. In this work, hollow h-MXene/ANF backbones with a continuous shielding network were fabricated using a facile vacuum-assisted filtration process combined with a sacrificial template method. The structurally engineered h-MXene/ANF hybrid films achieved outstanding EMI shielding effectiveness (EMI SE) of 78.9 dB and EMI specific shielding effectiveness per unit thickness (SSE/t) of 15703 dB·cm2·g–1. These exceptional properties are attributed to high ohmic losses, multiple internal reflections, polarization relaxation, and efficient losses in the hollow MXene conductive layer, facilitated by impedance mismatches within the sandwich structure. Notably, the EMI SE performance can be tuned by adjusting the content of hollow MXene microspheres. In addition, extensive hydrogen-bonding interactions between the high-performance ANF and MXene contribute to enhanced mechanical properties, including tensile strength of up to 37 MPa, as well as excellent thermal stability and self-cleaning capabilities. Overall, the sandwich-structured h-MXene/ANF hybrid films exhibit superior mechanical strength, multi-resistant properties, and ultra-high, tunable EMI shielding performance, making them promising candidates for advanced EMI shielding in next-generation portable smart electronic devices.下一代集成电子和通信系统，特别是便携式智能设备和人工智能应用，迫切需要具有轻质，多电阻特性和卓越，可调谐EMI屏蔽性能的高性能电磁干扰（EMI）屏蔽材料。本文采用简单的真空辅助过滤工艺结合牺牲模板法制备了具有连续屏蔽网络的中空h-MXene/ANF骨架。结构工程的h-MXene/ANF杂化膜具有出色的EMI屏蔽效能（EMI SE）为78.9 dB，单位厚度的EMI特定屏蔽效能（SSE/t）为15703 dB·cm2·g-1。这些优异的性能归因于高欧姆损耗、多次内部反射、极化弛豫和中空MXene导电层的高效损耗，以及夹层结构内阻抗不匹配的促进。值得注意的是，可以通过调整空心MXene微球的含量来调节EMI SE性能。此外，高性能ANF和MXene之间广泛的氢键相互作用有助于增强机械性能，包括高达37 MPa的抗拉强度，以及出色的热稳定性和自清洁能力。总体而言，三明治结构的h-MXene/ANF混合薄膜具有卓越的机械强度，多重耐性能和超高可调EMI屏蔽性能，使其成为下一代便携式智能电子设备中高级EMI屏蔽的有希望的候选者。Hierarchical material-structure optimization of composite laminates based on BESO method and lamination parametersXubo Zhang, Yiyi Zhou, Yi Min Xie, Minger Wu, Yue Lidoi:10.1016/j.compstruct.2025.119251基于BESO方法和层合参数的复合材料层合板材料结构分层优化This study first presents a concurrent material-structure optimization scheme for constant stiffness composite laminates, using the bi-directional evolutionary structural optimization (BESO) and the lamination parameters. Both in-plane and out-of-plane loading scenarios are considered to enhance the applicability. Numerical studies demonstrate the effectiveness of the proposed concurrent scheme by comparing its results with those from a sequential optimization approach (where lamination parameters are optimized first and then followed by topology). Then, recognizing the large computational costs of overall concurrent schemes that limit their practical implementation, this study leverages on the evolutionary properties of the BESO method to further develop a simplified and efficient approach. Numerical investigations suggest optimizing the lamination parameters 5 or 6 times at regular intervals throughout the topology optimization process until the target volume is achieved, effectively balancing accuracy and efficiency. Verification results show that the simplified hierarchical scheme yields comparable results to the overall concurrent optimization, surpasses the sequential approach, and significantly reduces computational costs. The simplified approach is straightforward, efficient, and easy to implement, potentially supporting the application of hierarchical material-structure optimization in practice.本研究首先提出了一种基于双向进化结构优化（BESO）和层合参数的恒刚度复合材料层合板材料-结构并行优化方案。考虑了面内和面外载荷情况，增强了适用性。数值研究通过与顺序优化方法（先优化层合参数后优化拓扑结构）的结果对比，验证了并行优化方案的有效性。然后，认识到整体并发方案的大量计算成本限制了它们的实际实现，本研究利用BESO方法的进化特性进一步开发了一种简化和高效的方法。数值研究表明，在整个拓扑优化过程中，每隔一段时间优化5或6次层压参数，直到达到目标体积，有效地平衡了精度和效率。验证结果表明，简化的分层优化方案与整体并行优化方案效果相当，优于顺序优化方案，并显著降低了计算成本。简化的方法简单、高效、易于实现，有可能支持分层材料结构优化在实践中的应用。Nonlinear vibration suppression of complex boundary multimodal rigid-flexible coupled irregular-shaped composite thin-walled panelZhi-Jian Wang, Jian Zang, Yang Li, Zhen Zhang, Xu-Yuan Song, Ye-Wei Zhang, Li-Qun Chendoi:10.1016/j.compstruct.2025.119233复杂边界多模态刚柔耦合异形复合薄壁板的非线性振动抑制This paper presents a passive nonlinear control scheme for instrument-equipped aerospace composite laminated thin-walled panels using nickel-titanium shape memory alloy wires. Higher-order dynamic analysis is performed on rigid-flexible coupled structures, examining vibration modes under irregular boundary conditions. The equations are decoupled to derive analytical solutions for multimodal nonlinear vibration suppression. An experimental platform is developed for specimen fabrication, modal testing, and vibration suppression. Results confirm broadband nonlinear damping under variable temperatures and multidirectional excitations. A novel method utilizing fast-slow and dwell sweeps is introduced to characterize the structure’s nonlinear dynamic behavior. Findings indicate that increased external excitation leads to more evident nonlinear hardening effects in the panel, while the passive control strategy effectively mitigates nonlinear resonance amplitude. This study confirms Nitinol-SMA’s capability to suppress complex nonlinear vibrations and highlights its potential for future aerospace applications.提出了一种采用镍钛形状记忆合金导线的航空航天复合材料薄壁板的被动非线性控制方案。对刚柔耦合结构进行了高阶动力分析，考察了不规则边界条件下的振动模态。解耦得到了多模态非线性振动抑制的解析解。建立了一个用于试件制作、模态测试和振动抑制的实验平台。结果证实了变温度和多向激励下的宽带非线性阻尼。介绍了一种利用快慢扫描和驻留扫描来表征结构非线性动力特性的新方法。结果表明，外部激励的增加会导致面板的非线性硬化效应更加明显，而被动控制策略可以有效地减轻非线性共振幅度。这项研究证实了Nitinol-SMA抑制复杂非线性振动的能力，并强调了其在未来航空航天应用中的潜力。A novel mesoscopic modeling method of triaxial woven fabric composites considering yarn-yarn contact geometryHonghua Zhang, Renbo Su, Xinyang He, Chengzu Li, Yifan Zhi, Wei Lidoi:10.1016/j.compstruct.2025.119247一种考虑纱线-纱线接触几何的三轴机织物复合材料细观建模方法This paper presents a high-fidelity mesoscopic triaxial woven fabric composites model with realistic contact surface morphology is designed parametrically from the contact region at the yarn interweaving position for avoiding volumetric interpenetration of the yarns. Additionally, the geometry of yarn-yarn contact is parametrically characterized. The geometrical features of the model are validated by the results extracted from micro-CT reconstruction. The introduction of experimental methodology for the direct observation of the actual contact surface morphology has validated the parametric characterization of the contact geometry. A Python script is developed to automate the addition of periodic boundary conditions and the accuracy of the elastic property prediction is evaluated experimentally. The results demonstrate that triaxial woven fabric composites modeling approach achieves fine mesoscale characterization and high elastic property prediction accuracy. The comparison results of two different contact surface morphology models highlight the significance of yarn-yarn contact morphology features in textile structure modeling.本文从纱线交织处的接触区域出发，参数化地设计了具有真实接触面形态的高保真介观三轴机织物复合材料模型，以避免纱线的体积互穿。此外，纱线接触的几何形状参数化表征。利用微ct重构结果验证了模型的几何特征。引入直接观察实际接触表面形貌的实验方法，验证了接触几何的参数化表征。开发了Python脚本实现周期边界条件的自动添加，并通过实验对弹性特性预测的准确性进行了评价。结果表明，三轴机织物复合材料建模方法具有较好的中尺度表征和较高的弹性性能预测精度。两种不同接触表面形态模型的对比结果突出了纱线接触形态特征在纺织品结构建模中的重要意义。Flexible radar-infrared compatible stealth skin metastructure based on multi-scale optimization designJian Ma, Xinxin Shen, Zhimin An, Jiayun Wang, Boyi Yao, Junping Duan, Binzhen Zhangdoi:10.1016/j.compstruct.2025.119249基于多尺度优化设计的柔性雷达红外兼容隐身蒙皮元结构In order to meet the requirements of efficient flight over wide airspace and at high speeds, morphing aircraft have been gradually emerging as a new avenue for innovative developments in aeronautical systems. With the steady progress in multi-target detection capabilities, the development of radar-infrared multi-spectral stealth-compatibility flexible skinning has become essential to ensure optimum flight performance for morphing aircraft. In this context, the study proposes a novel multi-layered design for optimization, integrating micro-structure and macro-structure. Several electromagnetic wave attenuation mechanisms have been developed by embedding nanoparticles in a PDMS matrix combined with frequency selective metasurfaces. This approach has resulted in a flexible sandwich matrix with extraordinary mechanical properties (1.66 MPa tensile strength) and an ultra-wide absorption bandwidth (25.28 GHz, Reflection loss (RL) < −10 dB). In addition, by integrating the infrared shield layer (IRSL), radar-infrared compatible stealth was achieved with an emissivity as low as 0.26. The developed multi-layer composite structure not only solves the incompatibility of radar and infrared stealth, but also demonstrates excellent flexibility in the conformations. This research provides both the theoretical basis and the technical support for the innovative development of high-speed morphing aircraft.为了满足大空域高速高效飞行的要求，变形飞机已逐渐成为航空系统创新发展的新途径。随着多目标探测能力的不断提高，雷达-红外多光谱隐身兼容柔性蒙皮的开发已成为保证变形飞行器最佳飞行性能的必要条件。在此背景下，本研究提出了一种新颖的多层优化设计，将微观结构与宏观结构相结合。通过将纳米颗粒嵌入PDMS矩阵并结合频率选择性超表面，开发了几种电磁波衰减机制。这种方法产生了具有非凡机械性能（1.66 MPa抗拉强度）和超宽吸收带宽（25.28 GHz，反射损耗(RL) < - 10 dB）的柔性夹层矩阵。此外，通过集成红外屏蔽层（IRSL），实现了雷达-红外兼容隐身，发射率低至0.26。所研制的多层复合结构不仅解决了雷达隐身与红外隐身的不兼容问题，而且在构象上具有良好的灵活性。该研究为高速变形飞行器的创新发展提供了理论基础和技术支撑。Composites Part A: Applied Science and ManufacturingSuperior compressive performance of a novel plate-added X-lattice core sandwich structure at elevated temperaturesZhi-jia Zhang, Jian-qiang Wang, Yong-jing Wang, Qian-cheng Zhang, Jian-kai Jiao, Jian-hua Liu, Ya-guang Sui, Xin Weidoi:10.1016/j.compositesa.2025.108992一种新型加板x晶格芯夹层结构在高温下的优越压缩性能Due to its orthotropic and three-dimensionally open-pored characteristic, the lattice sandwich structure having double-functionally load support and thermal management is considered one of the most typical and promising structures. However, a single core topology that concurrently excels in both mechanical and thermal performance remains a significant challenge. To address this issue, this paper employs a hybrid concept to design a novel plate-added X-lattice core sandwich structure (PX) with concurrent thermal and mechanical load-bearing capabilities. The compressive properties of PX, fabricated by Selective Laser Melting (SLM) technique, are comprehensively investigated by combining experimental, theoretical, and numerical methods at 25∼800 °C.The results indicate that the compressive strength of PX decreases by approximately 41.6 % as the temperature increases from 25 °C to 800 °C. During the compression process, there exists a mutual restraint effect between the struts of the X-lattice and the plate. Due to the limited plasticity of the printed Ni718 alloy, after yielding, the specimens exhibit catastrophic failure, leading to suboptimal energy absorption performance at varied temperatures. Additionally, systematic parameter studies quantitatively demonstrate the influence of specific parameters on the specified strength of the proposed structure. Compared with competing cellular materials, PX demonstrates superiority in specific strength on the material selection map.具有载荷支撑和热管理双重功能的晶格夹层结构由于其正交异性和三维开孔的特性，被认为是最典型和最有前途的结构之一。然而，单核拓扑结构在机械和热性能上同时表现优异仍然是一个重大挑战。为了解决这一问题，本文采用混合概念设计了一种具有热、机械双重承载能力的新型加板x晶格核心夹层结构（PX）。采用选择性激光熔化（SLM）技术制备的PX在25 ~ 800 °C下的压缩性能，通过实验、理论和数值方法进行了全面研究。结果表明：当温度从25 °C升高到800 °C时，PX的抗压强度降低了约41.6 %；在压缩过程中，x -晶格的支板与板之间存在相互约束作用。由于Ni718合金的塑性有限，在屈服后，试样会出现灾难性的破坏，导致在不同温度下的能量吸收性能不理想。此外，系统的参数研究定量地证明了特定参数对所提出结构的指定强度的影响。与竞争的细胞材料相比，在材料选择图上，PX在比强度上表现出优势。Intermolecular hydrogen bonding enabling mechanically robust, thermally stable, and solvent-resistance bio-based polyimine networksHongliang Ding, Jue Wang, Chuanshen Wang, Lini Wu, Wei Zhang, Lu Liu, Yun Lei, Na Sun, Keqing Zhou, Bin Yudoi:10.1016/j.compositesa.2025.109006分子间氢键使机械坚固，热稳定，耐溶剂的生物基聚酰亚胺网络With the increasing awareness of environmental protection and the concept of sustainable development, covalent adaptable networks are receiving growing attention due to their intelligent functionalities and sustainability. However, they still face challenges, including how to balance comprehensive performance, dynamic features and high flammability. Herein, lignin-derived vanillin was used as a precursor to synthesize the bio-based polyimine (TMP-IPDA-Si) with excellent comprehensive performance and certain fire safety properties. The molecular dynamics simulations showed that the introduction of hydrazide structures and the formed acylhydrazone bonds enhanced the intermolecular hydrogen bonding interactions between the polymer networks, resulting in polyimine materials with outstanding mechanical properties (tensile strength of 85.7 MPa) and high Tg (201.4°C). The TMP-IPDA-Si exhibited excellent solvent resistance, retaining over 90 % of its mechanical properties after 72 h in aqueous solutions. It also showed outstanding thermal stability and high char yield (over 46 %), surpassing many previously reported polyimine. In MCC tests, the TMP-IPDA-Si displayed low THR (8.5 kJ g−1) and PHRR (170.5 W g−1) value. This study lays the scientific groundwork for designing bio-based polyimines with superior mechanical properties and high Tg , offering potential for broader applications in fire-safe and sustainable materials.随着人们环保意识和可持续发展理念的增强，共价自适应网络因其智能化和可持续性而受到越来越多的关注。然而，它们仍然面临着挑战，包括如何平衡综合性能，动态特性和高可燃性。本文以木质素衍生的香兰素为前驱体，合成了具有优异综合性能和一定防火性能的生物基聚亚胺（TMP-IPDA-Si）。分子动力学模拟结果表明，酰腙结构的引入和酰基腙键的形成增强了聚合物网络之间的分子间氢键相互作用，使得聚酰亚胺材料具有优异的力学性能（抗拉强度为85.7 MPa）和高Tg (201.4°C)。TMP-IPDA-Si表现出优异的耐溶剂性，在水溶液中72 h后，其机械性能保持了90% %以上。它还表现出优异的热稳定性和高炭收率（超过46% %），超过许多先前报道的聚酰亚胺。在MCC测试中，TMP-IPDA-Si显示低THR（8.5 kJ g−1）和PHRR（170.5 W g−1）值。本研究为设计具有优良力学性能和高Tg的生物基聚酰亚胺材料奠定了科学基础 ，在防火安全和可持续材料方面提供了更广泛的应用潜力。Theoretical analysis of cutting mechanisms for CF/epoxy and CF/PEEK considering their elasto-plastic propertiesFuji Wang, Xiaohang Hu, Rao fu, Lianheng Ge, Pengcheng Ju, Zhenyuan Jiadoi:10.1016/j.compositesa.2025.109007考虑CF/环氧树脂和CF/PEEK弹塑性特性的切削机理理论分析Carbon fiber-reinforced plastic composites including CF/PEEK and CF/epoxy are hard-to-cut materials. Accurate modeling of their material removal behavior is essential for deep understanding and effective control of cutting process. Previous cutting models have not fully considered material plasticity, resulting in inaccurately predicting cutting process, particularly for highly plastic composites and under high-temperature conditions. This paper proposed a novel theoretical model for cutting composites considering matrix elasto-plastic properties. The model first characterized the coupled constraint relationship between fiber and matrix, and quantitatively analyzed the impact of matrix elasto-plastic properties on material removal. Comparative investigations and validations for CF/PEEK and CF/epoxy were conducted under 25 °C and 200 °C. The proposed model has improved predicting accuracy for subsurface damage, cutting force and thrust force by 13.48%, 5.49%, and 17.47%, respectively, comparing to that without considering plasticity. Moreover, the influence mechanism of matrix plasticity on the material removal process was elucidated by the model. Specifically, due to its superior ductility, CF/PEEK experienced more serious subsurface damage, especially under 200 °C, while the cutting forces were lower compared to cutting CF/epoxy.碳纤维增强塑料复合材料包括CF/PEEK和CF/环氧树脂是难以切割的材料。对其材料去除行为进行精确建模是深入理解和有效控制切削过程的必要条件。以往的切削模型没有充分考虑材料的塑性，导致对切削过程的预测不准确，特别是对于高塑性复合材料和高温条件下的切削过程。本文提出了一种考虑基体弹塑性特性的切削复合材料的理论模型。该模型首先表征了纤维与基体之间的耦合约束关系，并定量分析了基体弹塑性性能对材料去除的影响。CF/PEEK和CF/环氧树脂在25 °C和200 °C下进行了对比研究和验证。与不考虑塑性的模型相比，该模型对亚表面损伤、切削力和推力的预测精度分别提高了13.48%、5.49%和17.47%。此外，还通过模型阐明了基体塑性对材料去除过程的影响机理。具体而言，由于其优越的延展性，CF/PEEK经历了更严重的亚表面损伤，特别是在200 °C下，而切割力比切割CF/环氧树脂要低。A review of diamond composites for heat spreadersZhen Yan, Wenyi Tong, Xiangyu Wang, Desong Fandoi:10.1016/j.compositesa.2025.109008金刚石导热片复合材料研究进展Heat spreading is a crucial aspect of the electronic thermal management, effectively reducing thermal gradients and preventing the formation of hotspots. As the power density of electronic devices continues to increase, the limitations posed by low thermal conductivity have led to traditional heat spreaders, such as metals and ceramics, gradually falling short of meeting actual usage requirements. Thanks to the excellent thermal conductivity, mechanical properties and tunability of thermal expansion coefficient, diamond composites based heat spreaders have recently garnered extensive attention and research. However, systematic summary and review of advanced diamond composites heat spreaders are lacking, which is not conducive to actively promoting the development of this field. Herein, we conduct an in-depth review of advanced diamond composites with the aim of exploring its application value as heat spreaders. First, the theoretical background of diamond composites is presented. Subsequently, current mainstream preparation methods for diamond composites are introduced. Following this, advanced diamond composites are discussed, with a focus on the latest breakthroughs in improving thermal properties. Finally, reliability tests are explored to guide the practical application of diamond composites as heat spreaders. It is hoped that this review will contribute to further research on diamond composites as heat spreaders.热扩散是电子热管理的一个重要方面，可以有效地降低热梯度，防止热点的形成。随着电子器件功率密度的不断提高，低导热系数的限制使得传统的导热材料，如金属和陶瓷，逐渐不能满足实际使用要求。由于金刚石复合材料具有优异的导热性、力学性能和热膨胀系数的可调性，近年来得到了广泛的关注和研究。然而，对先进的金刚石复合材料导热片缺乏系统的总结和回顾，不利于积极推动该领域的发展。在此，我们对先进金刚石复合材料进行了深入的综述，旨在探索其作为散热器的应用价值。首先，介绍了金刚石复合材料的理论背景。随后介绍了目前金刚石复合材料的主流制备方法。接下来，讨论了先进的金刚石复合材料，重点介绍了在改善热性能方面的最新突破。最后，对金刚石复合材料作为导热材料的可靠性试验进行了探讨，以指导其实际应用。希望对金刚石复合材料作为导热材料的进一步研究有所贡献。Wire-based friction stir additive manufacturing of TiC reinforced Al-Cu-Mg composite: Particle refinement and dispersionZeyu Zhang, Long Wan, Qi Wen, Youlong Shi, Zhanwen Fengdoi:10.1016/j.compositesa.2025.109009 TiC增强Al-Cu-Mg复合材料丝基搅拌摩擦添加剂制备：颗粒细化与分散A dense aluminum matrix composite with uniformly dispersed nanoscale TiC particles was achieved using wire-based friction stir additive manufacturing (W-FSAM). Dual-step severe plastic deformation, featured with pre-plasticization in the screw tool and thermo-plasticized deposition by stirring pins, was proposed to drive the broken, fragmentation, and re-dispersion of the TiC particles. As a result, the TiC particles were refined from aggregation with 10 μ m in the feedstock to nanoparticles with an average size of 58 nm, achieving uniform dispersion in the matrix. Homogeneous equiaxed grains with an average size of 0.75 μm were also achieved due to the low thermal cycle, dynamic recrystallization, and Zener pinning of TiC nanoparticles. Sub-microscale equiaxed grains and TiC nanoparticles allowed for strong grain refinement and Orowan strengthening, significantly enhancing the mechanical performance. Consequently, the as-built state composite exhibited an average yield strength of 203 MPa, an ultimate tensile strength of 291 MPa, and a uniform elongation of 13.2 %. This work provides a promising insight into aluminum matrix composite with homogeneous dispersed and nanoscale reinforcement, which is critical for advanced structural applications.采用丝基搅拌摩擦增材制造技术（W-FSAM）制备了具有均匀分散纳米级TiC颗粒的致密铝基复合材料。提出了螺杆工具预塑化和搅拌销热塑化沉积的双步剧烈塑性变形驱动TiC颗粒破碎、破碎和再分散。结果表明，TiC颗粒从原料中粒径为10 μ m的团聚体细化到平均粒径为58 nm的纳米颗粒，在基体中均匀分散。通过低热循环、动态再结晶和齐纳钉扎，获得了平均尺寸为0.75 μm的均匀等轴晶粒。亚微尺度等轴晶粒和TiC纳米颗粒使晶粒细化和Orowan强化，显著提高了力学性能。结果表明，复合材料的平均屈服强度为203 MPa，极限抗拉强度为291 MPa，均匀伸长率为13.2 %。这项工作为具有均匀分散和纳米级增强的铝基复合材料提供了有希望的见解，这对高级结构应用至关重要。Composites Part B: EngineeringA transient thermal model within the laser shadow during laser-assisted automated fiber placement: Prediction of temperature at the nip point using a Lagrangian descriptionNingguo Dong, Chengcheng Niu, Xinhua Yao, Zequan Ding, Yuyang Ji, Jianzhong Fu, Congcong Luandoi:10.1016/j.compositesb.2025.112598激光辅助自动光纤放置过程中激光阴影内的瞬态热模型：利用拉格朗日描述预测夹点温度Automated fiber placement, from a material point of view, involves a transient thermal phenomenon, which introduces additional complexities due to the formation of a laser shadow zone in the optical path. In this study, a transient thermal model was developed within the laser shadow during laser-assisted automated fiber placement, incorporating velocity dependence using a Lagrangian description. This model predicted the temperature history within the laser shadow, thereby enabling control over temperature at the nip point. Experiments were conducted to validate the model by measuring temperatures using a Long Wave Infrared sensor and K-type thermocouples. A good agreement with the experimental results was achieved under various process conditions. The effects of placement speed, laser power, tooling temperature, and roller diameter were analyzed by evaluating both the model predictions and the measured data. Moreover, several composite components were fabricated, and the interlaminar shear strength was tested to characterize the effect of temperature at the nip point. Finally, a temperature at the nip point of 350.5 °C, obtained at a placement speed of 100 mm/s and a laser power of 550 W, yields a maximum value of 59.9 MPa.从材料的角度来看，自动光纤放置涉及一种瞬态热现象，由于在光路中形成激光阴影区，它引入了额外的复杂性。在这项研究中，在激光辅助自动光纤放置过程中，在激光阴影内建立了一个瞬态热模型，使用拉格朗日描述将速度依赖性纳入其中。该模型预测了激光阴影内的温度历史，从而实现了对掐点温度的控制。利用长波红外传感器和k型热电偶测量温度，对模型进行了验证。在不同的工艺条件下，所得结果与实验结果吻合较好。通过对模型预测和实测数据的评价，分析了放置速度、激光功率、模具温度和滚轮直径对加工的影响。此外，制备了几种复合材料构件，并对其进行了层间剪切强度测试，以表征夹紧点温度对层间剪切强度的影响。最后，在放置速度为100 mm/s，激光功率为550 W的情况下，夹点温度为350.5°C，产生的最大值为59.9 MPa。Constructing interfacial pulleys with branched polynaphthalamic acid polyrotaxane: a new route to superior interfacial toughness and strength in carbon fiber-reinforced compositesZhen Deng, Peiwen Yang, Long Ma, Gang Li, Yunhua Yu, Xiaoping Yangdoi:10.1016/j.compositesb.2025.112597 用支链聚萘甲酸聚轮烷构建界面滑轮：碳纤维增强复合材料界面韧性和强度的新途径Alleviating the modulus mismatch and residual stress at the interphase of carbon fiber-reinforced polymer matrix composites (CFRPs) is crucial for enhancing their interfacial and mechanical performance. In this study, interfacial pulley structures were strategically engineered through the development of branched polynaphthalamic acid-based polyrotaxane (BPP), thereby enabling simultaneous enhancement of interfacial toughness and strength in CFRPs. Molecular dynamics simulations combined with comprehensive chemical structure characterization validated the rational molecular design and successful synthesis of BPP. Comparative analysis demonstrated that the BPP-modified carbon fiber/epoxy composites (BPPCF/EP) displayed a substantially increased interphase thickness of 412.50 nm compared to unmodified CF/EP (UCF/EP), along with a gradual modulus transition and a notable 78.15% decrease in interfacial residual stress. These improvements stem from the synergistic effect of the naphthalimide anchor, which facilitates modulus gradient regulation, and the unique molecular pulley mechanism inherent to the BPP architecture. As a result, the transverse fiber bundle test strength (TFBT strength), interfacial shear strength (IFSS), and interfacial toughness of the BPPCF/EP were greatly improved by 158.57%, 103.76%, and 348.68%, respectively, compared to the UCF/EP. This investigation establishes a novel materials engineering strategy for interfacial optimization in CFRPs, offering fundamental insights into the design of multifunctional interphase modifiers for high-performance structural composites.减轻碳纤维增强聚合物基复合材料界面模量失配和界面残余应力是提高复合材料界面性能和力学性能的关键。在本研究中，通过开发支链聚萘甲酸基聚轮烷（BPP），战略性地设计了界面滑轮结构，从而同时增强了cfrp的界面韧性和强度。分子动力学模拟结合全面的化学结构表征验证了BPP的合理分子设计和成功合成。对比分析表明，与未改性的碳纤维/环氧复合材料（UCF/EP）相比，改性碳纤维/环氧复合材料（BPPCF/EP）界面厚度显著增加，达到412.50 nm，模量逐渐转变，界面残余应力显著降低78.15%。这些改进源于萘酰亚胺锚定的协同效应，它有利于模数梯度调节，以及BPP结构固有的独特分子滑轮机制。结果表明，与UCF/EP相比，BPPCF/EP的横向纤维束测试强度（TFBT强度）、界面剪切强度（IFSS）和界面韧性分别提高了158.57%、103.76%和348.68%。本研究为cfrp界面优化建立了一种新的材料工程策略，为高性能结构复合材料多功能界面改性剂的设计提供了基础见解。来源：复合材料力学仿真Composites FEM