【新文速递】2026年4月16日固体力学SCI期刊最新文章

今日更新：Composite Structures 6 篇，Composites Part A: Applied Science and Manufacturing 3 篇，Composites Part B: Engineering 2 篇，Composites Science and Technology 1 篇Composite StructuresMultistable energy harvesting from hybrid bistable symmetric laminatesPaulomi Mukherjee, A. Arockiarajan, Shaikh Faruque Alidoi:10.1016/j.compstruct.2026.120294混合双稳态对称层压板的多稳态能量收集This study investigates the energy harvesting potential of hybrid bistable symmetric laminates (HBSL). Here, aluminium (Al) and bi-directional (BD) glass fibre layers are integrated as a hybrid material with a unidirectional carbon prepreg and termed as HBSL and m-HBSL, respectively. These laminates are modelled as a single-degree-of-freedom (SDoF) system by combining the finite element ana lysis and the first-mode approximation an alysis. Inertial nonlinearity is also considered by imposing the inextensible condition on the laminate length. In addition, Experiments are conducted on the fabricated HBSL in a bimorph configuration. The laminates show periodic and chaotic intra-well and inter-well oscillations, harvesting maximum voltage during inter-well vibration. The frequency sweep response of the harvested voltage obtained from SDoF an alysis closely matches the experimental results. m-HBSL harvests energy through a broader frequency and amplitude range compared to HBSL due to the change in the potential well characteristics in terms of multiple stable states and energy barriers between wells. In addition, a substantial enhancement in harvested maximum power density from 170 mW/cm 3 to 365 mW/cm3 is observed upon replacing the hybrid material from Al to BD glass fibre. Consequently, this study highlights the effectiveness of material-specific multistability in improving energy harvesting performance, enabling efficient power generation for real-life applications.本文研究了混合双稳态对称层压板（HBSL）的能量收集潜力。在这里，铝（Al）和双向（BD）玻璃纤维层作为混合材料与单向碳预浸料集成，分别称为HBSL和m-HBSL。采用有限元分析和一模态近似分析相结合的方法，将这些层压板建模为单自由度系统。通过对层板长度施加不可扩展条件，考虑了惯性非线性。此外，还对制备的双晶型HBSL进行了实验。层压板表现出周期性和混沌的井内和井间振荡，在井间振动时收获最大电压。SDoF分析所得电压的扫频响应与实验结果吻合较好。与HBSL相比，m-HBSL通过更宽的频率和幅度范围收集能量，这是由于井间的多个稳定状态和能量屏障等潜在井特性的变化。此外，最大收获功率密度从170毫瓦/立方厘米大幅提高至365毫瓦/立方厘米。在将杂化材料由Al替换为BD玻璃纤维时观察到。因此，本研究强调了特定材料的多稳定性在提高能量收集性能方面的有效性，从而使实际应用中的高效发电成为可能。Structural safety assess ment of bolted joint laminate using multi-sensor detectionYi Gong, Xiangli Li, Rui Zhou, Miao Li, Sheng Liudoi:10.1016/j.compstruct.2026.120297基于多传感器检测的螺栓连接层合板结构安全性评价Bolted joints are widely used to joint and secure carbon fiber reinforced polymer laminates in aerostructures. However, the structure is susceptible to failure due to bolt loosening or bearing damage to the laminate. Currently, few studies achieve accurate detection of external loads as well as the assess ment of the failure state. In this study, we propose a method that combines multi-sensor detection with damage calculation for the safety assess ment of bolted joint laminate. Specifically, an annular strain sensor is developed to detect the strain distribution around the hole. The results are used to predict the magnitude and direction of tensile loads based on a detection model, which shows high accuracy (error is less than 14.53% and 8.33%, respectively). Then, the bolt axial force is monitored using a s mart bolt, and used to evaluate joint failure modes such as loosening or over-tightening. The detection results of multi-sensor are used for damage calculation utilizing numerical modeling. The results indicate that the coupling effect of axial force and tensile load significantly influences the damage initiation and distribution.螺栓连接广泛应用于航空结构中碳纤维增强聚合物层压板的连接和固定。然而，由于螺栓松动或轴承损坏，结构容易失效。目前，很少有研究能够准确地检测外载荷和评估失效状态。本文提出了一种多传感器检测与损伤计算相结合的螺栓连接层合板安全评估方法。具体来说，设计了一种环形应变传感器来检测孔周围的应变分布。将结果用于基于检测模型的拉伸载荷大小和方向预测，该模型具有较高的精度（误差分别小于14.53%和8.33%）。然后，使用智能螺栓监测螺栓轴向力，并用于评估连接的破坏模式，如松动或过紧。采用数值模拟方法，将多传感器检测结果用于损伤计算。结果表明，轴向力和拉伸载荷的耦合作用对损伤的起裂和分布有显著影响。Deformation and load-bearing of flexible skin based on jujube core shaped double-layer deformable honeycombChang Zhao, Li Zhou, Tao Qiudoi:10.1016/j.compstruct.2026.120300基于枣芯状双层可变形蜂窝的柔性皮肤变形与承载A flexible skin structure based on jujube core shaped double-layer deformable honeycomb is proposed, which consists of jujube core shaped double-layer deformable honeycomb and flexible panel. Structural performance of flexible skin mainly depends on the deformable honeycomb, and flexible panel is used to maintain the s moothness and flatness of skin surface. Jujube core shaped double-layer deformable honeycomb is formed by staggered bending connection of curved plates at two different layers, which can simultaneously possess good in-plane uniaxial, biaxial and shear deformation capability, realizing various shape changes of morphing wing and adapting to multiple mission requirements. Mechanical properties of this double-layer deformable honeycomb were compared with single-layer ones. The results show that jujube core shaped double-layer deformable honeycomb has better in-plane deformability, while maintaining high out-of-plane stiffness, having more superior mechanical properties. In-plane deformation and out-of-plane bending resistance of jujube core shaped double-layer deformable honeycomb were studied. Theoretical model of the structure was established and verified by simulation and experiment, and influence of geometric parameters on in-plane and out-of-plane capabilities was an alyzed. Surface deformation characteristic of the flexible skin was also studied. Relationship between local deformation of flexible panel in honeycomb pore and parameters of the flexible skin was derived. A flexible filling scheme is proposed to further improve local out-of-plane load-bearing capacity of the flexible skin. By filling honeycomb pores with silica gel foam, the foamed silica gel and the silica gel panel are connected into a whole to obtain a flexible skin with s mooth surface.提出了一种基于红枣芯状双层可变形蜂窝的柔性皮肤结构，该结构由红枣芯状双层可变形蜂窝和柔性面板组成。柔性蒙皮的结构性能主要依靠可变形的蜂窝状结构，采用柔性面板来保持蒙皮表面的光洁度和平整度。枣芯型双层可变形蜂窝是由两层弯曲板交错弯曲连接而成，可同时具有良好的面内单轴、双轴和剪切变形能力，可实现变形翼的多种形状变化，适应多种任务要求。对双层可变形蜂窝的力学性能与单层蜂窝进行了比较。结果表明：枣芯型双层变形蜂窝具有较好的面内变形能力，同时保持较高的面外刚度，具有更优越的力学性能；研究了枣芯型双层可变形蜂窝的面内变形和面外抗弯性能。建立了结构的理论模型，并通过仿真和实验进行了验证，分析了几何参数对结构面内、面外性能的影响。研究了柔性蒙皮的表面变形特性。推导了蜂窝孔中柔性板的局部变形与柔性皮参数的关系。为了进一步提高柔性蒙皮的局部面外承载能力，提出了一种柔性填充方案。通过用硅胶泡沫填充蜂窝孔，将发泡的硅胶与硅胶板连接成一个整体，从而获得表面光滑的柔性皮肤。Development of a light-weight hybrid concrete-fibre reinforced polymer pedestrian bridge girder with nonlinear load-displacement responseDarshana Rathnayaka Mudiyanselage, Dilum Fernando, Fergus Cuthill, Sergio Lopez Dubon, Edward D. McCarthy, José Sena-Cruzdoi:10.1016/j.compstruct.2026.120302具有非线性荷载-位移响应的轻型混合混凝土-纤维增强聚合物人行桥梁的研制Fibre-reinforced polymer (FRP) bridge systems are becoming increasingly popular amongst bridge engineering due to their many advantages, including lightweight and high durability. While FRP bridge systems possess many advantages over traditional bridge systems, they demonstrate almost linear load–displacement response followed by brittle failure modes, which is seen as an unfavourable behaviour for bridge structures. Attempting to solve the above issue, this paper presents the development of an innovative lightweight hybrid concrete-FRP composite bridge girder for pedestrian bridges, which is capable of providing a nonlinear load–displacement response. Composite girders consist of a top concrete layer as a compression element, a bottom Carbon FRP (CFRP) laminate as tensile reinforcement, FRP box and C sections as main shear elements, a thick web to avoid web buckling, and steel shear keys to provide load transfer between concrete and the web. The nonlinear load–displacement behavior was achieved by ensuring that failure initiated within the steel shear keys, which constitutes a primary innovation of the proposed composite girder system. Two types of composite girders were conceived: (i) a medium-scale composite girder, with a length of 2000 mm, was designed, fabricated and tested to validate the design hypothesis. Failure initiated and propagated within the concrete-web interface, and a nonlinear load–displacement response was obtained, validating the design hypothesis; (ii) based on the learnings from the medium-scale girder, two large-scale girders with a length of 5500 mm were designed, fabricated, and tested. One large-scale girder used CFRP, while the other used GFRP for the C and box sections. FE models were also developed to accurately capture the behaviour of the proposed girders. The experimental results confirmed that the proposed girders exhibit a nonlinear load–displacement response and exceed the serviceability and ultimate limit state requirements specified in current design codes for pedestrian bridges. The proposed FE modelling approach was shown to accurately predict the behaviour of the composite girders纤维增强聚合物（FRP）桥梁体系由于其轻量化和高耐久性等优点，在桥梁工程中越来越受欢迎。虽然玻璃钢桥梁系统比传统桥梁系统具有许多优点，但它们表现出几乎线性的荷载-位移响应，随后是脆性破坏模式，这被认为是桥梁结构的不利行为。为了解决上述问题，本文提出了一种创新的轻型混合混凝土- frp复合人行桥主梁的开发，该主梁能够提供非线性荷载-位移响应。复合梁由顶部混凝土层作为压缩单元，底部碳纤维复合材料（CFRP）层压作为抗拉钢筋，FRP箱和C截面作为主要剪切单元，厚腹板避免腹板屈曲，钢剪切键在混凝土和腹板之间提供荷载传递。非线性荷载-位移行为是通过确保破坏在钢剪力键内开始实现的，这是所提出的组合梁系统的主要创新。设计了两种类型的组合梁：(i)设计、制造和测试了长度为2000 mm的中型组合梁，以验证设计假设。破坏在混凝土-腹板界面内开始并传播，得到了非线性荷载-位移响应，验证了设计假设；（ii）在中型梁的基础上，设计、制作并测试了两根长度为5500 mm的大型梁。一个大型梁采用碳纤维布，而另一个C和箱形截面采用碳纤维布。还开发了有限元模型，以准确地捕捉所建议的梁的行为。试验结果证实，所建议的梁表现出非线性荷载-位移响应，并且超过了现行人行桥梁设计规范中规定的使用能力和极限状态要求。所提出的有限元建模方法能够准确地预测组合梁的性能Thermo-mechanical behavior and design of a hybrid glass fiber composite support for liquid hydrogen insulated vesselJia-le Che, Young-Rock Lee, Seung-Hwan Changdoi:10.1016/j.compstruct.2026.120305液氢绝缘容器用混合玻璃纤维复合材料支架的热力学性能及设计To address the conflicting requirements of high structural stiffness and low thermal conductivity in a mobile liquid hydrogen (LH2) insulated vessel, this study proposes a comprehensive thermal protection system integrating high-vacuum multi-layer insulation (MLI) with hybrid support architecture. The support comprises a stainless-steel core reinforced with glass fiber reinforced epoxy (G-10CR), where the volume fraction of the composite phase was determined using the rule of mixtures to achieve a balance between thermal resistance and mechanical rigidity. A coupled thermo-mechanical an alysis was performed to evaluate the vessel’s performance under realistic driving conditions, explicitly accounting for the cryogenic hardening of G-10CR and stainless-steel, and the stress concentration induced by the ΔT=278K (20 K-298 K) temperature gradient. The thermal an alysis results demonstrate that the synergy between the selected 25 mm thick MLI-vacuum insulation and the hybrid support effectively suppress heat leakage, achieving a boil-off rate (BOR) between 0.21% and 0.25% per day, which is significantly below the commercial limit. Structural validation further confirms that the hybrid supports maintain interfacial integrity under dynamic operating conditions and thermal contraction. And the modal an alysis verified that the structure’s natural frequencies avoid resonance with vehicle excitations. The combination of hybrid support, and the MLI system offers an effective solution for mobile LH2 vessels, ensuring both thermal efficiency and structural safety.针对移动液态氢（LH2）隔热容器对高结构刚度和低导热系数的矛盾要求，本研究提出了一种高真空多层隔热（MLI）与混合支撑结构相结合的综合热防护系统。支架由玻璃纤维增强环氧树脂（G-10CR）增强的不锈钢芯组成，其中复合相的体积分数是使用混合规则确定的，以实现热阻和机械刚度之间的平衡。在考虑了G-10CR和不锈钢的低温硬化以及由高温高温引起的应力集中的情况下，采用热-力耦合分析方法评估了该容器在实际驾驶条件下的性能 ΔT=278K（20 K-298 K）温度梯度。热分析结果表明，所选择的25 mm厚的mli -真空绝热材料与混合支架之间的协同作用有效地抑制了热泄漏，实现了每天0.21%至0.25%的蒸发率（BOR），显著低于商业极限。结构验证进一步证实，混合支撑在动态操作条件和热收缩条件下保持界面完整性。模态分析验证了该结构的固有频率能避免与车辆激励产生共振。混合支撑和MLI系统的结合为移动LH2容器提供了有效的解决方案，确保了热效率和结构安全性。A comparative and data-driven assess ment of damage tolerance in composite laminates and honeycomb sandwich structuresWei Zhao, Qun Yan, Zeyuan Chen, Weizheng Song, Chenchen Lian, Jiu-Tao Hangdoi:10.1016/j.compstruct.2026.120308复合材料层合板和蜂窝夹层结构损伤容限的比较和数据驱动评估Fiber-reinforced laminates and honeycomb sandwich structures are widely employed in lightweight aerospace due to their high specific strength and stiffness, yet they remain susceptible to low-velocity impacts during service. Such impacts can induce Barely Visible Impact Damage (BVID), resulting in a marked reduction in residual strength and a consequent risk to structural integrity. Laminate panels and honeycomb sandwich structures represent two typical configurations, exhibiting distinctly different damage mechanis ms and residual strength decay laws. However, few researchers have been able to draw on any systematic research into comparative and quantitative an alyses of damage tolerance within the same material system. Therefore, a multi-method approach that combines experiments, simulations, and machine learning to establish quantitative correlations between damage and residual strength was employed in this paper. Multidimensional damage characteristics were characterized through systematic post-impact compression experiments and finite element modeling. Subsequently, a Bayesian random forest model was used to establish a precise mapping relationship from damage to residual strength. The results indicate that laminate strength is primarily influenced by indentation depth. In contrast, honeycomb sandwich structures exhibit a relatively balanced feature importance, a consequence of their complex, multi-stage damage progression. These findings elucidate the configuration-dependent regulation of damage tolerance from a data-driven perspective, providing a scientific basis for the selection, design, and development of damage-tolerant systems in aerospace applications.纤维增强层压板和蜂窝夹层结构由于具有高比强度和刚度而广泛应用于轻量化航空航天领域，但在使用过程中仍容易受到低速冲击。这种冲击会引起几乎不可见的冲击损伤（BVID），导致残余强度显著降低，从而对结构完整性造成威胁。层压板和蜂窝夹层结构是两种典型的结构形式，表现出明显不同的损伤机制和残余强度衰减规律。然而，很少有研究人员能够对同一材料系统内损伤容限的比较和定量分析进行系统研究。因此，本文采用了一种结合实验、模拟和机器学习的多方法方法来建立损伤与残余强度之间的定量相关性。通过系统的冲击后压缩实验和有限元建模，表征了损伤的多维特征。随后，采用贝叶斯随机森林模型建立损伤与残余强度之间的精确映射关系。结果表明，压痕深度是影响层压强度的主要因素。相比之下，蜂窝夹层结构表现出相对平衡的特征重要性，这是其复杂的多阶段损伤过程的结果。这些发现从数据驱动的角度阐明了损伤容限的构型依赖规律，为航空航天应用中损伤容限系统的选择、设计和开发提供了科学依据。Composites Part A: Applied Science and ManufacturingPressure-induced ultrahigh-aspect-ratio boron nitride nanosheets via combustion synthesis: enabling high orientation and enhanced in-plane thermal conductivity of flexible heat spreadersWan Wang, Boda Zhu, Yue Qin, Yue Ren, Qing Meng, Xiao Yang, Yunqing Hao, Chuxin Li, Jiangtao Li, Jinhong Yu, Yong Lidoi:10.1016/j.compositesa.2026.109790燃烧合成压力诱导的超高长径比氮化硼纳米片：实现柔性散热器的高取向和增强的面内导热性The rapid advancement of high-power-density integrated circuits and electronic devices demands thermally conductive yet electrically insulating composites to effectively mitigate “hot spot” issues. Hexagonal boron nitride nanosheets (BNNS) are promising fillers for dielectric polymer composites to enhance their thermal conductivity. However, constructing high thermal conduction networks and scalably, efficiently synthesizing BNNS remain challenging, which seriously hinders further improvements in the thermal conductivity of BNNS/polymer composites. Herein, we report the preparation of highly thermally conductive and electrically insulating BNNS/cellulose nanofiber (CNF) composite films via vacuum-assisted filtration followed by cold-pressing, in which highly crystalline and ultrahigh-aspect-ratio BNNS were fabricated by a combustion synthesis method. The subsequent cold-pressing step further improved the BNNS orientation and established closer contact between BNNS, forming an interconnected thermal “expressway”. The composite exhibits a high in-plane thermal conductivity of 74.97 W m−1 K−1. As a heat spreader in high-power LED modules, it demonstrates effective cooling performance (A sharp drop of 28.4 ℃ in LED temperature and a reduction of 5.06 ℃ in the practical computer application). These findings provide an alternative route for producing high-quality BNNS and thermally conductive polymer composites, with promising applications in thermal management for modern electronics.高功率密度集成电路和电子器件的快速发展需要导热绝缘复合材料来有效地缓解“热点”问题。六方氮化硼纳米片（BNNS）是一种很有前途的介质聚合物复合材料填料。然而，构建高导热网络和大规模、高效地合成BNNS仍然是一个挑战，这严重阻碍了BNNS/聚合物复合材料导热性能的进一步提高。本文报道了采用燃烧合成的方法，通过真空辅助过滤和冷压，制备了高结晶性和超高宽高比的BNNS/纤维素纳米纤维（CNF）复合膜。随后的冷压步骤进一步改善了BNNS的取向，使BNNS之间的接触更加紧密，形成了一条相互连接的热“高速公路”。复合材料的面内导热系数为74.97 W m−1 K−1。作为大功率LED模块的散热片，具有有效的散热性能（在实际计算机应用中，LED温度急剧下降28.4℃，降低5.06℃）。这些发现为生产高质量的BNNS和导热聚合物复合材料提供了另一种途径，在现代电子产品的热管理方面具有广阔的应用前景。Water-induced robust MXene-bridged reduced graphene oxide composite films for enhanced electromagnetic interference shielding and thermal managementQiulong Li, Xiaoxiao Ding, Yuyao Wang, Lei Zhang, Tianle Xu, Huili Fu, Guang Xiao, Yongbao Fengdoi:10.1016/j.compositesa.2026.109789 水诱导坚固的mxene桥接还原氧化石墨烯复合膜，增强电磁干扰屏蔽和热管理Two-dimensional (2D) graphene and Maxine have significant research values in the fields of electromagnetic interference (EMI) shielding and thermal management due to their prominent electrical property. However, assembling 2D nanosheets into a planar, isotropic nanofilm with excellent mechanical, electrical and thermal properties still poses significant challenges. Herein, we successfully developed strong MXene-bridged reduced graphene oxide (rGO) composite films (MXrGY) characterized by high compactness, alignment, and in-plane isotropy. The fabrication was achieved via nanoconfined water-induced basal-plane alignment and covalent (Ti–O–C bonds), coupled with bridging effect of interlayer water. As expected, under reduction effect of HI, the M1rG1 composite film exhibits a tensile strength of 95.24 MPa and an in-plane thermal conductivity of 17.18 W m−1 K−1. The conductivity of the M3rG1 composite film is significantly enhanced to 1431 S·cm−1, thereby achieving an ultrahigh EMI SE of 59.16 dB. Furthermore, planar isotropic high-strength π-M1rG1 composite film were prepared via π-π intersheet bridging, with the in-plane tensile strength markedly increasing to 148.35 MPa. This work advances the integration of flexible and strengthened multifunctional materials in modern electronics, with potential applications in both EMI shielding and thermal management.二维（2D）石墨烯和Maxine由于其突出的电学特性，在电磁干扰（EMI）屏蔽和热管理领域具有重要的研究价值。然而，将二维纳米片组装成具有优异机械、电学和热性能的平面各向同性纳米膜仍然面临着重大挑战。在此，我们成功地开发了强mxene桥接还原氧化石墨烯（rGO）复合薄膜（MXrGY），具有高致密性、排列性和面内各向同性的特点。该材料是通过纳米水诱导基面排列和共价键（Ti-O-C键）以及层间水的桥接效应实现的。在HI的还原作用下，M1rG1复合膜的抗拉强度为95.24 MPa，面内导热系数为17.18 W m−1 K−1。M3rG1复合膜的电导率显著提高至1431 S·cm−1，从而实现了59.16 dB的超高EMI SE。通过π-π片间桥接制备了平面各向同性的高强度π- m1rg1复合膜，其面内抗拉强度显著提高至148.35 MPa。这项工作推进了柔性和强化多功能材料在现代电子产品中的集成，在电磁干扰屏蔽和热管理方面具有潜在的应用。Composites Part B: EngineeringConcurrent multi-scale topology optimization for continuous fiber reinforced lattice structure with spatially tunable fiber morphologyChenyang Li, Shangqin Yuan, Chenyang Shi, Xiaobao Zhi, Yamin Li, Jihong Zhu, Weihong Zhangdoi:10.1016/j.composites b.2026.113644具有空间可调纤维形态的连续纤维增强晶格结构并行多尺度拓扑优化Continuous fiber-reinforced polymer (CFRP) composites manufactured via additive manufacturing (AM) offer significant potential for the design of high-performance lattice structures. However, existed design methods have not yet fully tapped the potential of gradient infill lattice with varying fiber ratio. In this work, a novel concurrent multi-scale topology optimization framework is proposed for CFRP lattice structures with spatially tunable fiber morphology, leveraging an RVE-based homogenization approach. The effective mechanical properties are evaluated by incorporating micro-scale fiber characteristics (i.e., fiber volume ratio and orientation) together with meso-scale lattice unit cell geometry. The divergence constraint based on fiber decomposition is introduced to suppress abrupt curvature transitions and guide the formation of s mooth fiber trajectories. The proposed optimization problem simultaneously considers macro-scale structural compliance as the objective and treats fiber parameters and unit cell dimensions as design variables across multiple scales. Furthermore, an enhanced wave projection method is developed to convert discrete design variable fields into printable fiber paths with multiple tows, enabling a continuous and realizable fiber layout. In general, the proposed concurrent multi-scale optimization scheme leverages spatially tunable fiber ratios to realize gradient infill within the lattice architecture, thereby offering superior load-bearing capacity and improved manufacturability over existing design methods. Overall, this framework provides a robust and manufacturable design strategy for CFRP lattice structures with customized topology and fiber morphology.通过增材制造（AM）制造的连续纤维增强聚合物（CFRP）复合材料为高性能晶格结构的设计提供了巨大的潜力。然而，现有的设计方法尚未充分挖掘出变纤维比梯度填充晶格的潜力。在这项工作中，利用基于rve的均匀化方法，为具有空间可调纤维形态的CFRP晶格结构提出了一种新的并发多尺度拓扑优化框架。通过结合微尺度纤维特性（即纤维体积比和取向）以及中尺度晶格单元几何结构来评估有效力学性能。引入基于纤维分解的发散约束来抑制曲率突变，指导光滑纤维轨迹的形成。该优化问题以宏观尺度的结构柔度为目标，以纤维参数和胞元尺寸为多尺度的设计变量。在此基础上，提出了一种增强波投影法，将离散的设计变量场转换为具有多束的可打印光纤路径，从而实现连续的、可实现的光纤布局。总的来说，所提出的并发多尺度优化方案利用空间可调光纤比例来实现晶格结构内的梯度填充，从而提供比现有设计方法更好的承载能力和更高的可制造性。总体而言，该框架为具有定制拓扑和纤维形态的CFRP晶格结构提供了稳健且可制造的设计策略。Weavable gypsum cellulose fibers with hydration driven structural fixationJingjing Yuan, Xinhai Zhu, Zhihao Zhao, Shuai Nie, Jing Wu, Weilin Xu, Kunkun Zhudoi:10.1016/j.composites b.2026.113657水化驱动结构固定的可织石膏纤维素纤维Flexible inorganic materials with post-processing structural fixation remain challenging due to the intrinsic brittleness and rapid solidification of mineral systems. Here, we design hierarchical gypsum–cellulose skin–core fibers via coaxial wet spinning, integrating deformable polymer networks with hydration-crystallization-enabled structural locking. The fibers comprise a cellulose sheath providing mechanical continuity and a calcium sulfate hemihydrate–cellulose composite core enabling hydration-driven crystallization. Systematic rheological an alysis reveals that incorporation of calcium sulfate particles induces viscoelastic network formation and strong shear-thinning behavior, defining a spinnable processing window. During hydration, nanoscale gypsum crystal growth within the fiber core generates an interlocked crystalline network, leading to significant increases in modulus and structural rigidity. The fibers exhibit tensile strains of ∼8% prior to hydration and maintain structural stability after hydration-induced stiffening. The hierarchical organic–inorganic architecture further provides intrinsic flame retardancy and thermal insulation through synergistic heat absorption, barrier formation, and multiscale porosity. Textile-scale demonstrations confirm the feasibility of weaving-based structural assembly followed by hydration-triggered consolidation. This study establishes a materials design strategy that couples fiber processing with hydration-driven crystal network formation in mineral-based composite fibers.由于矿物系统固有的脆性和快速固化，具有后处理结构固定的柔性无机材料仍然具有挑战性。在这里，我们通过同轴湿纺丝设计了分层石膏-纤维素皮芯纤维，将可变形的聚合物网络与水化结晶激活的结构锁相结合。所述纤维包括提供机械连续性的纤维素鞘和能够水化驱动结晶的半水合硫酸钙-纤维素复合芯。系统流变分析表明，硫酸钙颗粒的掺入诱导粘弹性网络形成和强剪切减薄行为，定义了可纺加工窗口。在水化过程中，纳米级石膏晶体在纤维芯内生长，形成一个互锁的晶体网络，导致模量和结构刚度显著增加。纤维在水化前表现出约8%的拉伸应变，在水化诱导硬化后保持结构稳定性。层次化的有机-无机结构通过协同吸热、屏障形成和多尺度孔隙进一步提供了内在的阻燃性和绝热性。纺织品规模的演示证实了基于编织的结构组装的可行性，然后是水化引发的固结。本研究在矿物基复合纤维中建立了一种将纤维加工与水化驱动晶体网络形成耦合的材料设计策略。Composites Science and TechnologyA Self-sensing Plant Fiber-reinforced Composites Based on Piezoelectric Effect for Damage DetectionWenquan Tong, Chunlin Fan, Lulu Lei, Zefei Cheng, Xuanye Wang, Zhibiao Wei, Tao Yudoi:10.1016/j.compscitech.2026.111630 基于压电效应的自传感植物纤维增强复合材料损伤检测Current self-sensing composites are generally incompatible with plant fiber-reinforced composites, failing to meet the requirements for their structural health monitoring. To address this issue, this study fabricated plant fiber piezoelectric composites via polyvinylidene fluoride (PVDF) functionalized matrix. By optimizing the material composition, 5% PVDF was identified as the optimal content to ensure the mechanical properties of the composites meet the service requirements. Sensing performance characterization confirmed that the composites exhibit stable self-sensing response capabilities based on the piezoelectric effect. Monitoring tests under three-point bending and impact load conditions verified that the proposed monitoring approach enables accurate localization of load-induced deformation and damage, as well as quantitative evaluation of damage severity. Finite element simulation provides theoretical validation for the monitoring mechanis m, and the constructed structural health monitoring system realizes real-time damage localization. In conclusion, the self-sensing composites and associated monitoring technology developed in this study effectively resolve the compatibility issue of structural health monitoring for PFRCs, and can provide technical guarantees and support for the large-scale application of PFRCs.现有的自传感复合材料与植物纤维增强复合材料普遍不兼容，不能满足其结构健康监测的要求。为了解决这一问题，本研究采用聚偏氟乙烯（PVDF）功能化基质制备了植物纤维压电复合材料。通过对材料组成的优化，确定了5% PVDF为复合材料力学性能满足使用要求的最佳含量。传感性能表征证实了该复合材料具有稳定的基于压电效应的自传感响应能力。三点弯曲和冲击载荷条件下的监测试验验证了所提出的监测方法能够准确定位载荷引起的变形和损伤，并对损伤严重程度进行定量评估。有限元仿真为监测机制提供了理论验证，构建的结构健康监测系统实现了损伤实时定位。综上所述，本研究开发的自传感复合材料及其相关监测技术有效解决了PFRCs结构健康监测的相容性问题，可为PFRCs的大规模应用提供技术保障和支持。来源：复合材料力学仿真Composites FEM