Composites Part B: Engineering最新文献

{"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}

{"title":"Thermally insulating composite granules by co-granulation of wood pulp fibre and polymer microsphere","authors":"Praveen Wilson ,&nbsp;Avik De ,&nbsp;Sara Wallsten ,&nbsp;Magnus Jonsson ,&nbsp;Farid Akhtar","doi":"10.1016/j.compositesb.2025.112826","DOIUrl":"10.1016/j.compositesb.2025.112826","url":null,"abstract":"<div><div>Thermal insulation of buildings is a critical area of interest for reducing the energy load required for heating and cooling. In this, retrofitting older buildings with modern and sustainable thermal insulation materials is gaining importance rapidly. Herein, we report a novel, bio-based, low-density (0.038–0.095 g cm⁻³) composite granules by high-shear co-granulation of wood pulp fibre and polymer microsphere using chitosan as a bio-based binder. The process parameters such as binder concentration, composition, and chopper speed were optimized to obtain composite granules in the size range of 4–8 mm. The optimized composite granules exhibited adequate compressive strength in the range of 106.05–155.78 kPa at 20 % strain and good pumpability. The steady-state effective thermal conductivity of the granules was determined to be in the range of 43.4–50.7 mW m^-1 K^-1. The study shows that lightweight and pumpable composite granules can offer a sustainable alternative to conventional fossil-based granular insulation materials, especially in the refurbishment of expired insulations in old structures.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"306 ","pages":"Article 112826"},"PeriodicalIF":12.7,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144711044","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":"In-situ quantitative characterization of uniformity evolution in additively manufactured SiC composites","authors":"Wenjie Hao ,&nbsp;Li Wang ,&nbsp;Kang Du ,&nbsp;Feixiang Wang ,&nbsp;Ke Li ,&nbsp;Jie Yin ,&nbsp;Zhengren Huang ,&nbsp;Tiqiao Xiao","doi":"10.1016/j.compositesb.2025.112784","DOIUrl":"10.1016/j.compositesb.2025.112784","url":null,"abstract":"<div><div>Over the past few years, silicon carbide (SiC) composites have gained significant industrial attention owing to their exceptional mechanical properties, chemical inertness, and favorable strength-to-weight ratio. Selective laser sintering (SLS) has emerged as an efficient approach for manufacturing SiC composites, offering unprecedented geometric flexibility. However, the layer-wise manufacturing process involved in this approach often results in microstructural non-uniformity across interlayers. In this study, we propose a non-destructive methodology that integrates phase-contrast micro-computed tomography with grayscale entropy index (GEI) analysis to quantitatively evaluate microstructural uniformity in SLS-fabricated SiC composites. The results indicated that the SLS process introduces significant periodic fluctuations in the microstructural uniformity of the composites during the green body and debinded body stages. These fluctuations exhibit a spatial period closely matching the powder layer thickness, with the GEI values effectively capturing both the uniformity and variability of the composite microstructure. Following silicon infiltration, the sintered ceramic stage shows a marked reduction in these fluctuations, resulting in a highly cohesive and uniform microstructure that improves the overall structural integrity of the additively manufactured SiC composites. The insights gained from this study will facilitate systematic optimization of process parameters in the additive manufacturing of SiC composites for industrial applications.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"306 ","pages":"Article 112784"},"PeriodicalIF":12.7,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144685883","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":"Nano-Fe3O4 modified carbon fiber reinforced polymer composites with friction self-healing and excellent wear resistant functionalities","authors":"Chang Li ,&nbsp;Jie Fei ,&nbsp;Jifeng Yan ,&nbsp;Tengyang Zhang ,&nbsp;Lehua Qi","doi":"10.1016/j.compositesb.2025.112812","DOIUrl":"10.1016/j.compositesb.2025.112812","url":null,"abstract":"<div><div>The interfacial bonding strength between carbon fibers and the resin matrix of carbon fiber-reinforced resin-based composites (CFRC), as well as the formation of friction films, play a decisive role in determining the tribological properties of CFRC. Effective design to construct the interfacial microstructures is crucial yet remains highly challenging for higher friction coefficient (μ_d) while improving the wear resistant of composites. Herein, this study employed hydrothermal and solvothermal methods to in-situ synthesize magnetic nano-Fe₃O₄ with diverse morphologies and sizes on the surface of carbon fibers, significantly improving the wear resistance of composites and endowing the composites with friction self-healing function. The results demonstrated that the successful growth of nano-Fe₃O₄ significantly increased the surface roughness and wettability of the carbon fibers, thereby contributing to the enhancement of the interfacial bonding strength of the composites. Owing to the nano-pinning effect exerted by nano-Fe₃O₄ on the resin matrix after its in-situ growth on the surface of CFs, the tensile strength and bending strength are increased by 39.4 % and 27.7 % respectively. Experimental data revealed that the μ_d of Fe₃O₄-Ⅲ modified composite was 0.2048, representing a 24.0 % increase compared to the unmodified material. In addition, owing to the strong magnetism of nano-Fe₃O₄, the magnetic wear debris generated during the friction process can be adsorbed onto the friction surface or filled into surface pores. This facilitates the continuous formation of a friction film during the continuous friction processes, thereby enabling the self-healing function and significantly enhancing the wear resistance of the composites. Based on the formation of the hard friction film, the wear rate of the modified composite was reduced by 65.4 %. This study offers novel insights into the surface modification of carbon fibers and the design of interfacial structures for functional polymer-based composites, which is conducive to obtaining superior wear resistance and provides great potential for applications in transmission and braking systems.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"306 ","pages":"Article 112812"},"PeriodicalIF":12.7,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144653887","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":"Non-destructive inspection of composite bonded repair: integrating morphology analysis, pulsed thermography and phased array ultrasonic","authors":"Guowen Wang ,&nbsp;Shuang Hu ,&nbsp;Yubo Zhao ,&nbsp;Tailang Zhao ,&nbsp;Hailong Yang ,&nbsp;Shanyong Xuan ,&nbsp;Xuefeng Yao","doi":"10.1016/j.compositesb.2025.112781","DOIUrl":"10.1016/j.compositesb.2025.112781","url":null,"abstract":"<div><div>The process monitoring and quality evaluation of composite scarf/step repair structures are of significant importance. In this paper, a method for rapid in-situ evaluation of the morphology and internal defects of the composite bonded repair structures is proposed by integrating digital image correlation (DIC), pulsed thermography (PT), and phased array ultrasonic (PAU) C-scan. For grinding process evaluation, a speckle-free three-dimensional digital image correlation (3D-DIC) method is employed, achieving quantitative morphology evaluation with a precision of around 50 μm. For the evaluation of bonded repaired structures, DIC-based morphology analysis, pulsed thermography and phased array ultrasonics equipped with a proposed three-dimensional reconstruction algorithm is applied. A specimen with preset multi-type defects is used to testing the non-destructive testing (NDT) methods. This study is of great significance for the development of low-cost, high-efficiency and in-situ NDT methods in engineering applications for composite bonded repair monitoring.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"306 ","pages":"Article 112781"},"PeriodicalIF":12.7,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144662868","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":"Dual fluorinated modification of 3D continuous interface and fluorinated graphite within nickel foam-PTFE interpenetrating phase composites","authors":"Yujie Su ,&nbsp;Yunxia Wang ,&nbsp;Yunfeng Yan ,&nbsp;Hao Liu ,&nbsp;Jianzhang Wang ,&nbsp;Qiangliang Yu","doi":"10.1016/j.compositesb.2025.112816","DOIUrl":"10.1016/j.compositesb.2025.112816","url":null,"abstract":"<div><div>Interpenetrating phase composites (IPCs) composed of metal and polymer have received extensive attention because of their hybrid structure and multiple properties, which are largely influenced by the 3D heterogeneous metal-polymer interface and bonding strength with functional fillers dispersed in the polymer matrix. Herein, a dual modification of reticulate nickel foam (NF) skeleton via fluorosilane and continuous PTFE matrix by compositing fluorinated graphite (FGr) microsheets is reported. NF-PTFE IPCs with enhanced 2D and 3D interfaces reveal multi-dimensional increases in thermal transfer efficiency, mechanical strength and wear resistance. Compared with that of the PTFE matrix, the thermal conductivity of the developed IPC increases by up to ∼299 %. The further incorporation of FGr helps decrease the wear rate by ∼90.7 %, owing to the enhanced load transfer, strain distribution at the interfaces and transfer film formation composed of multiple components. This dual-modification strategy effectively enhances the performance of metal-polymer IPCs by promoting load and heat transfer at internal 2D-3D interfaces and friction transfer at the friction interface.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"306 ","pages":"Article 112816"},"PeriodicalIF":12.7,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144634323","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":"In situ biaxial tensile testing of composites: coupling X-ray computed tomography and digital volume correlation with finite element simulations","authors":"Salaheddine E. Madi ,&nbsp;Thanasis Chatziathanasiou ,&nbsp;Johan Vanhulst ,&nbsp;Guillaume Bravais ,&nbsp;Barbara Fayard ,&nbsp;Martine Wevers ,&nbsp;Yentl Swolfs ,&nbsp;Jeroen Soete","doi":"10.1016/j.compositesb.2025.112815","DOIUrl":"10.1016/j.compositesb.2025.112815","url":null,"abstract":"<div><div>The mechanical behaviour of fibre-reinforced composites under multiaxial loading is critical for their structural performance but remains challenging to characterise at the microscale. This study introduces a novel biaxial loading rig designed for in situ X-ray Computed Tomography (XCT) characterisation of fibre-reinforced composites. The rig enables controlled biaxial stress states while maintaining compatibility with high-resolution XCT imaging. Digital Volume Correlation (DVC) is employed to obtain full-field, three-dimensional strain measurements at the microscale, and Finite Element (FE) simulations are compared with the DVC results. The methodology is demonstrated on an E-glass/epoxy composite, highlighting its capability to capture complex deformation mechanisms under biaxial loading. The simulations qualitatively agreed with the experimental results in predicting the locations of strain concentrations and failure initiation, supporting the validity of the in situ experimental approach. This alignment not only reinforces confidence in the experimental outcomes but also paves the way for the use of these results to refine and calibrate micromechanical models in future studies. This work establishes a proof of concept for integrating in situ XCT, DVC, and numerical modelling to characterise the strain evolution in fibre-reinforced composites under multiaxial loading. Future research will focus on a detailed characterisation of microscale damage mechanisms. This work lays the foundation for improving the understanding and predictive modelling of composite material behaviour in structural applications.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"306 ","pages":"Article 112815"},"PeriodicalIF":12.7,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144634322","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":"Nacre-like gradient cementitious composites for effective crack resistance and ultra-broadband microwave absorption","authors":"Yihao Xiao ,&nbsp;Yahui Xue","doi":"10.1016/j.compositesb.2025.112813","DOIUrl":"10.1016/j.compositesb.2025.112813","url":null,"abstract":"<div><div>Cement-based materials serve as the cornerstone of modern construction and building engineering. Their abundance, low cost, and long service life position them as promising candidates for electromagnetic wave absorption (EMA). However, inherent brittleness and low electrical conductivity limit their effectiveness in this domain. Here, inspired by the hierarchical architectures of natural materials, such as nacre and antler, we develop nacre-like gradient structural cementitious composites (NGSCs) with enhanced toughness and crack resistance. The layered structure with a conductivity gradient further endows NGSCs with superior ultra-broadband EMA performance. Composed of millimeter-scale cement tablets bonded by ethylene-vinyl acetate (EVA) interfaces and reinforced with a gradient distribution of carbon nanotubes (CNTs), NGSCs enhance ductility and damage tolerance through stress delocalization and process zone toughening induced by tablet sliding. Extrinsic mechanisms—such as crack deflection and interface bridging—concurrently inhibit crack propagation. Compared to traditional hardened cement paste, NGSCs show a 299.7-fold increase in ductility, a 145.9-fold improvement in flexural toughness, and a 20.0-fold enhancement in fracture toughness. Furthermore, the multilayered gradient structure enhances electromagnetic wave (EMW) capture via tailored impedance matching, while maintaining an extended absorption path and strong EM energy attenuation. As a result, NGSCs achieve efficient EMA across both high (13–20 GHz) and low (3.8–5.2 GHz) frequency bands—outperforming previously reported cement-based EM absorbers at equivalent thicknesses. By integrating blade coating, pre-grooving, and layer-by-layer assembly techniques, we propose a scalable fabrication strategy for multifunctional, high-performance cementitious composites, advancing the practical application of structural EM absorbers in engineering.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"306 ","pages":"Article 112813"},"PeriodicalIF":12.7,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144653836","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":"Fully biobased circular biocomposites for chemical recycling to monomer and fiber","authors":"Erfan Oliaei ,&nbsp;Philip Josephson ,&nbsp;Céline Montanari ,&nbsp;Lars A. Berglund ,&nbsp;Peter Olsén","doi":"10.1016/j.compositesb.2025.112814","DOIUrl":"10.1016/j.compositesb.2025.112814","url":null,"abstract":"<div><div>The cradle-to-cradle philosophy is desirable for semi-structural cellulose biocomposites. Selective chemical recycling of a thermoset matrix back to reusable monomers was realized while avoiding cellulose fiber degradation. A fully biosourced, PLA-based (polylactic acid) thermoset polymer was molecularly designed for chemical recycling and for curing in chemically heterogeneous plant fiber networks. Curing was by stepwise polymerization of 4-arm functional prepolymers of PLA in a cellulosic wood fiber network of high fiber content. FT-IR data supported covalent fiber/matrix interface bonding. These eco-friendly biocomposites showed high modulus (24 GPa) and high optical transmittance. The matrix was selectively degraded back to the initial building block, lactic acid monomer, under alkali conditions. This progressed without apparent damage to the cellulosic fibers. The green metrics of the synthesis showed strong potential for this material concept in a circular economy.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"306 ","pages":"Article 112814"},"PeriodicalIF":12.7,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144662869","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":"Multi-scale stochastic study of glass fiber sizing effects in automotive structural sheet molding compounds","authors":"William J. Henken ,&nbsp;Stephen Young ,&nbsp;Vivek Chawla ,&nbsp;Cecile A. Grubb ,&nbsp;Rebecca E. Bergee ,&nbsp;Mohamed M. Selim ,&nbsp;Jonathan McKay ,&nbsp;Hendrik Mainka ,&nbsp;Marton Kardos ,&nbsp;Dayakar Penumadu","doi":"10.1016/j.compositesb.2025.112795","DOIUrl":"10.1016/j.compositesb.2025.112795","url":null,"abstract":"<div><div>Three commercially available sizings A, B, and C were studied in this work based on their target use towards class-A, semi-structural, and general-purpose SMC formulations. Each chemical sizing treatment A, B, and C was compounded on a pilot-scale SMC line with target 55 wt% fiber content using the same paste formulation suitable for high fiber content. Compression molding and sample preparation was conducted systematically and consistently to minimize variance when comparing test results. Notable differences in wetting and sheet density of the compounded charges were observed. After compression molding one chemical sizing exhibited blister defects on the panel surfaces of approximately 1/3rd of the molded panels, indicating the entrapment of air during flow which was not observed in the other compounds. ANOVA revealed significant differences (17 %–20 %) in IFSS at the fiber-matrix interface resulting from chemical sizing. Despite these observed differences, ANOVA revealed no significant differences in quasi-static tension, shear, flexure, or compression properties of molded panels containing the different glass fiber sizings. This work concludes that chemical sizing significantly affects SMC compounding, molding, and microscale IFSS. Provided the composites can consolidate without the formation of blister defects, the overall structural performance is not observed to change statistically when considering inherent sources of variability stemming from localized effects of fiber volume and fiber orientation at the mesoscale. Outcomes of this work allow for greater confidence in producing semi-structural SMC components using generalized chemical sizing packages as long as consolidation of SMC parts is achieved through compounding and molding.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"306 ","pages":"Article 112795"},"PeriodicalIF":12.7,"publicationDate":"2025-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144653835","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}