Composites Part B: Engineering最新文献

{"title":"Lithium storage properties of MOF-on-MOF derived In2O3/Co3O4 heterojunction with ‘‘chocolate-bar’’ structure","authors":"Min Jian ,&nbsp;Yuhua Wang ,&nbsp;Haijun Zhang ,&nbsp;Yao Guo ,&nbsp;Yinghui Xue","doi":"10.1016/j.compositesb.2025.112833","DOIUrl":"10.1016/j.compositesb.2025.112833","url":null,"abstract":"<div><div>Lithium-ion batteries (LIBs) have become indispensable in modern society, powering a wide range of portable electronics and electric vehicles. Nevertheless, the development of high-performance anode materials remains hindered by challenges such as limited capacity and severe volume fluctuations during lithiation/delithiation. Here, we report a rationally designed MOF-on-MOF derived In₂O₃/Co₃O₄ heterojunction featuring a unique hollow “chocolate-bar” architecture. This structure not only offers a high specific surface area of 1174 m²/g and abundant electroactive sites, but also effectively accommodates volume changes and preserves structural integrity during cycling. Benefiting from the strong synergistic coupling at the In₂O₃–Co₃O₄ interface, as confirmed by DFT calculations, the heterojunction exhibits enhanced electronic conductivity and reduced lithium-ion diffusion barriers. As a result, the In₂O₃/Co₃O₄ electrode delivers a high reversible capacity of 920.5 mAh/g at 0.5C and retains 710.85 mAh/g at 1C with the CE exceeding 99.45 % over 500 cycles. By combining practical and theoretical design techniques, this study demonstrates the prospective of MOF-on-MOF derived heterostructures as a viable platform for creating next generation LIB anodes.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"306 ","pages":"Article 112833"},"PeriodicalIF":12.7,"publicationDate":"2025-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144679863","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Modeling and experimental investigation of nonlinear behaviors for CF/PEEK thermoplastic laminated strips with perforated holes","authors":"Bin Yu ,&nbsp;Liping Xiao ,&nbsp;Yana Wang ,&nbsp;Chunrong Jiao ,&nbsp;Haifeng Zhao ,&nbsp;Jian Jiao","doi":"10.1016/j.compositesb.2025.112821","DOIUrl":"10.1016/j.compositesb.2025.112821","url":null,"abstract":"<div><div>In this work, the effects of various notch-distribution parameters on the mechanical behavior of CF/PEEK laminates are systematically investigated to inform the design of perforated thermoplastic composite structures. A three-dimensional continuum damage model, incorporating the nonlinear shear response of thermoplastic composites, is developed. Distinct damage modes and morphology of fracture surface are investigated by experimental observation. Progressive damage evolution under tensile loading is characterized via high-fidelity numerical simulations and validated against experimental measurements using digital image correlation. The key design variables, including width to diameter ratio, hole amount in transverse direction and longitudinal direction, uniformity coefficient in longitudinal direction and layup angle—are all examined using a three-level parametric study. Numerical and experimental implementations of the proposed approach enabled the influence of load-carrying capacities and damage mechanisms. The comparison of experimental and simulated results demonstrates a good agreement. Moreover, the significant stress-shielding effects are conducted from the observation of the damage initiation around the outermost and isolated holes. The relevance of this influence is related to geometry and arrangement parameters. These insights offer practical guidance for the rationalization of open-hole layouts in lightweight high-performance composite structures.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"306 ","pages":"Article 112821"},"PeriodicalIF":12.7,"publicationDate":"2025-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144694459","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Aligned triboelectric all-nanofiber generator as self-powered sensors for message cryptography","authors":"Fujun Han ,&nbsp;Tianyu Wang ,&nbsp;Ying Chen ,&nbsp;Xiuyan Ren ,&nbsp;Zhihao Peng ,&nbsp;Xulong Zheng ,&nbsp;Kairui Wang ,&nbsp;Yiyan Gao ,&nbsp;Ya Cheng ,&nbsp;Guanghui Gao","doi":"10.1016/j.compositesb.2025.112835","DOIUrl":"10.1016/j.compositesb.2025.112835","url":null,"abstract":"<div><div>As a self-powered device, triboelectric fiber-generators (TEFGs) have garnered considerable attention over the past decade, overcoming the limitations of conventional power sources. Significantly, while both structures function, the aligned nanofiber film demonstrably outperforms the random nanofiber film in triboelectric output performance. Hence, a triboelectric all-nanofiber generator with an aligned structure is investigated, consisting of the co-electrospun polyacrylonitrile (PAN)/thermoplastic polyurethane (TPU) nanofiber positive triboelectric layer and polyvinylidene fluoride (PVDF)/polydimethylsiloxane (PDMS) nanofiber negative triboelectric layer. After the optimization of structure, triboelectric fiber-generators with aligned (A-TEFG) exhibited peak-to-peak voltage, current output, and transient power density values of 55 V, 0.8 μA, and 33.6 mW/m², respectively, which could efficiently harvest mechanical energy to power light-emitting diodes (LEDs). Furthermore, A-TEFG was used as self-powered sensors for human movement monitoring and transmitting encrypted information followed Morse code principles. Based on the simple and scalable fabrication methods, A-TEFG makes a promising candidate to developing practical, flexible, and self-powered wearable electronic devices.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"306 ","pages":"Article 112835"},"PeriodicalIF":12.7,"publicationDate":"2025-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144679864","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Deep learning for traction field prediction in delaminations with large-scale bridging","authors":"Riccardo Grosselle ,&nbsp;Esben Lindgaard ,&nbsp;Andreas Kühne Larsen ,&nbsp;Sergio Escalera ,&nbsp;Brian Lau Verndal Bak","doi":"10.1016/j.compositesb.2025.112778","DOIUrl":"10.1016/j.compositesb.2025.112778","url":null,"abstract":"<div><div>Accurate modelling of delamination interfaces in fibrous laminated composites is computationally expensive, particularly when large-scale bridging zones form. Smeared-out approaches fail to capture the localised nature of the bridging fibres, while models that discretise the bridging ligaments become computationally intractable. Consequently, high-fidelity interface modelling approaches cannot be applied to large structures, limiting the full potential of laminated composites. This paper proposes a proof-of-concept for a hybrid approach that replaces the delamination interface with a physics-aware convolutional neural network structured as a modified U-Net architecture. The machine learning model is trained using data generated from a high-fidelity physics-based mechanical model. It takes as inputs the deformation field of each crack face and maps it to the corresponding discrete traction field of the bridging zone. Two models are compared: a physics-guided model, whose loss function minimises the mean squared error of the traction field, and a physics-informed model, in which the loss function is augmented by the J-integral of the region of interest. The evaluation shows that both models accurately capture the bridging tractions pattern and the global physical response of the region of interest, with an average J-integral error of less than 3.3% relative to the maximum J-integral value in the dataset. The physics-informed model demonstrates superior performance in capturing the underlying mechanics, providing accurate J-integral results even when the bridging pattern is poorly predicted. Once trained, both models can generate predictions across all simulation time steps in 1.5 s, potentially enabling new possibilities in the design of large composite structures.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"306 ","pages":"Article 112778"},"PeriodicalIF":12.7,"publicationDate":"2025-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144704447","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Coaxial Al4C3/Al2O3@Cf composite with tunable core–shell architecture for synergistic electromagnetic absorption and thermal insulation","authors":"Junjie Zhou ,&nbsp;Yike Zhang ,&nbsp;Xinyu Wang ,&nbsp;Yanan Yang ,&nbsp;Xin Wu ,&nbsp;Jin Hu ,&nbsp;Long Xia","doi":"10.1016/j.compositesb.2025.112830","DOIUrl":"10.1016/j.compositesb.2025.112830","url":null,"abstract":"<div><div>Impedance mismatch and high-temperature oxidation are two main factors that limit the practical application of carbon-based absorbing materials. Although micro/nano-structured composites have been explored to alleviate these issues, they often suffer from dispersion instability and structural fragility. In this work, a coaxial composite fiber microwave absorber (Al₄C₃/Al₂O₃@C_f) is fabricated using carbon fiber (C_f) as a template and conductive core, with an Al₄C₃/Al₂O₃ ceramic shell grown in situ via a vapor–solid reaction. Compared to pristine C_f, which exhibits negligible absorption, the optimized composite achieves a minimum reflection loss of −49.27 dB, attributed to interfacial polarization and a built-in capacitor-like structure. Meanwhile, the material also features excellent oxidation resistance and thermal insulation (0.0567 W m⁻¹ K⁻¹ at 100 °C). This study presents a structurally controllable, thermally robust absorber design that overcomes key limitations of traditional carbon-based materials, offering a promising solution for next-generation electromagnetic protection in aerospace and harsh environments.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"306 ","pages":"Article 112830"},"PeriodicalIF":12.7,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144665959","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comprehensive characterisation of S2-glass/PAEK composites manufactured via aqueous powder impregnation","authors":"Alireza Moradi ,&nbsp;Changze Sun ,&nbsp;David James Atkinson ,&nbsp;Zhongwei Guan","doi":"10.1016/j.compositesb.2025.112823","DOIUrl":"10.1016/j.compositesb.2025.112823","url":null,"abstract":"<div><div>This study experimentally investigates the manufacture of high-performance S2-glass fibre/Polyarylether ketone (PAEK) thermoplastic prepreg materials using an in-house aqueous wet powder impregnation method, with a focus on physical and mechanical testing to evaluate the production efficiency and material quality. The thermoplastic composite laminates produced exhibit remarkable mechanical and physical properties, with a high fibre volume content of up to 72 % and minimal void content. Processing pressure and time are shown to significantly influence the composite quality, with an optimal combination of 10.5 bar pressure and 20 min pressing time effectively eliminating most air voids. Mechanical evaluations, including interlaminar shear strength and flexural strength, provide insights into the distinctive performance characteristics of different laminate configurations. Additionally, certain composite laminates demonstrate impressive mechanical stability at elevated temperatures, with only a 15.9 % reduction in tensile strength, from 1760 MPa at room temperature to 1480 MPa at 250 °C, highlighting the potential of this material across a range of applications.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"306 ","pages":"Article 112823"},"PeriodicalIF":12.7,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144679866","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Facile transformation of graphite composites into their porous analogues with superior electrical, thermal, and EMI shielding properties","authors":"Tomas Plachy,&nbsp;Erika Pavlikova,&nbsp;Robert Moucka,&nbsp;Martin Cvek","doi":"10.1016/j.compositesb.2025.112827","DOIUrl":"10.1016/j.compositesb.2025.112827","url":null,"abstract":"<div><div>Novel porous conducting polymer composites were prepared through the direct expansion of expandable graphite within a melted polypropylene matrix. A facile <em>in-situ</em> method resulted in a remarkable reduction in the electrical percolation threshold of composites containing expanded graphite, forming an accordion-like network inside the polymer matrix compared to their non-expanded compact analogues. Despite their porosity, the expanded samples showed increased thermal conductivity, and the variation of electrical and thermal conductivity with the filler concentration adhered to the percolation theory and Lichtenecker model, respectively. Depending on the concentration, the expansion process notably enhanced the electromagnetic interference (EMI) shielding efficiency, producing a composite with shielding performance above 20 dB. The presented strategy enables a facile and cost-effective improvement of the electrical, thermal, and EMI shielding properties without affecting the weight of the composite, making it highly relevant for industrial adoption.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"306 ","pages":"Article 112827"},"PeriodicalIF":12.7,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144694458","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Gradient-based shape optimization of induction welding coil for thermoplastic composites via level-set method","authors":"Jaeyub Hyun ,&nbsp;Darun Barazanchy ,&nbsp;Jaspreet Pandher ,&nbsp;Michel van Tooren ,&nbsp;H. Alicia Kim","doi":"10.1016/j.compositesb.2025.112824","DOIUrl":"10.1016/j.compositesb.2025.112824","url":null,"abstract":"<div><div>One of the advantages of thermoplastic over thermoset-based polymer composites is the ability to join parts by locally melting and re-solidifying the polymer to form cohesive bonds, alternatively to mechanical fasteners or adhesives. Interest in thermoplastic composites for use in primary structures of aircraft has grown exponentially in the past decade, thanks to the advancements in cohesive joining technologies to reduce structural weight, airframe cost, and enable high-rate production. One of the cohesive joining technologies of interest for thermoplastic composite is welding based on induction heating using an alternating EM field created by running an alternating current through a coil. The best coil design depends on the material to be welded, especially on the type of thermoplastic material and the laminate stacking sequence used and the geometry of the joint. This study focuses on shape optimization of induction welding coils, which are a critical factor in a welding process. A hybrid boundary element/edge-based finite element method is used to solve the Maxwell equations and resolve eddy currents induced in thermoplastic composite laminates. Level-set method is employed for the parameterization of the induction coil design. The coil shape is updated based on the shape sensitivities calculated through the adjoint variable method. To demonstrate the effectiveness of the proposed optimization framework, several numerical studies are performed, and some important geometric characteristics of the optimized coils are observed.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"306 ","pages":"Article 112824"},"PeriodicalIF":12.7,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144679862","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of needle-punching on the internal morphology and mechanical properties of recycled non-woven carbon fiber reinforced thermoplastics with tailored anisotropic ratio","authors":"Sang Won Lim ,&nbsp;Fan Zhang ,&nbsp;Cheng Jin ,&nbsp;Haruna Maruko ,&nbsp;Yi Wan ,&nbsp;Jun Takahashi","doi":"10.1016/j.compositesb.2025.112822","DOIUrl":"10.1016/j.compositesb.2025.112822","url":null,"abstract":"<div><div>The ongoing environmental crisis and growing demand for sustainability pose significant challenges to the widespread adoption of carbon fiber composites. Regulations aimed at reducing carbon emissions emphasize the importance of incorporating recycled carbon fiber (rCF). This study investigates the internal morphology and mechanical behavior of needle-punched non-woven carbon fiber reinforced thermoplastics (NW-CFRTP) using rCF as reinforcing substrate and polyamide-6 as base matrix. NW-CFRTP offer a promising alternative to continuous composites as they enable tailoring of mechanical performance by anisotropic ratio. Needle-punching is a widely employed process to improve material handling, property stabilization, and flow deterrence – key considerations for large-scale production. However, there are concerns regarding its potential adverse effects on the high in-plane mechanical properties. The NW-CFRTP in this study utilized orientation tailored rCF to enhance directional mechanical properties, making it more suitable for structural members in automotive applications. Internal morphology was analyzed through X-ray micro-computed tomography scanning to evaluate tensorial anisotropy and flow behavior. Mechanical properties were experimentally assessed and further analyzed through multi-scale modelling approach to estimate engineering constants. Results indicate that needle-punching effectively mitigates turbulent flow while preserving fiber orientation and planarity, with minimal compromise in mechanical performance. The tailored NW-CFRTP in this study, to the best of the author's knowledge, achieved the highest reported performance for recycled discontinuous CFRTP with fiber volume fraction below 30 %, demonstrating exceptional fiber utilization efficiency. Finally, the theoretical properties derived through multi-scale modelling provide a solid foundation for finite element analysis to support adoption of the material on a larger scale.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"306 ","pages":"Article 112822"},"PeriodicalIF":12.7,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144672617","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A hybrid soft-structure interaction metastructure combining bio-inspired sandwich structure with shear stiffening gel for advanced dynamic crushing performance","authors":"Jianqiang Deng ,&nbsp;Tao Liu ,&nbsp;Liming Chen ,&nbsp;Zhaoxin Yun ,&nbsp;Xin Pan ,&nbsp;Hangyu Fan ,&nbsp;Shuyan Nie ,&nbsp;Weiguo Li","doi":"10.1016/j.compositesb.2025.112831","DOIUrl":"10.1016/j.compositesb.2025.112831","url":null,"abstract":"<div><div>Inspired by the structural feature and viscoelastic mechanism found in Cybister elytra, this study proposes a hybrid bio-inspired mechanism synergistic strategy to design the composite bio-inspired sandwich structure embedded with shear stiffening gel (CBSS-SSG). Dynamic impact tests are conducted to investigate the dynamic response of the CBSS-SSG. Meanwhile, the non-linear explicit finite element method is utilized to further explore the rate-dependent characteristics and crushing mechanisms of the CBSS-SSG. The proposed CBSS-SSG under various impact loadings simultaneously possesses a stable and high crushing force level, no obvious peak force, and high energy absorption capacity through the synergistic integration of bio-inspired structural features and viscoelastic protection mechanisms. Comparative analysis with the empty (CBSS-Empty), polymethacrylimide foam-filled (CBSS-Foam), and shear thickening fluid-filled (CBSS-STF) counterparts reveals that the CBSS-SSG exhibits good energy absorption characteristics under different crushing loadings by yielding a superior rate-sensitivity in crushing force efficiency (<em>CFE</em>) and specific energy absorption (<em>SEA</em>). The CBSS-SSG achieves a synchronous boost in <em>CFE</em> and <em>SEA</em> across the studied velocity range, with the enhancement reaching 28.28 %–365.14 % and 7.69 %–528.57 %, respectively, compared with the CBSS-Empty. Additionally, the influences of the SSG's viscoelastic material parameters and the arc-shaped core's configuration parameters on the dynamic performance of CBSS-SSG are further investigated to pinpoint the most efficient CBSS-SSG and achieve the performance-driven customization. The hybrid bio-inspired mechanism synergistic strategy provides a viable pathway toward improvable and allowable for tailoring the dynamic behavior of the protective structure.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"306 ","pages":"Article 112831"},"PeriodicalIF":12.7,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144679865","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}