Composites Part B: Engineering最新文献

{"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":"Structural performance of sustainable concrete columns using industrial wastes and natural fibres","authors":"A. Manikandan ,&nbsp;K. Murali","doi":"10.1016/j.compositesb.2025.112832","DOIUrl":"10.1016/j.compositesb.2025.112832","url":null,"abstract":"<div><div>Sustainable construction is crucial to mitigating the environmental impact of resource depletion, especially the excessive use of natural river sand. This study investigates the feasibility of using industrial by-products, Waste Foundry Sand (WFS) and Manufactured Sand (M-sand), as partial replacements for fine aggregate in concrete. The experimental program involved replacing fine aggregate with WFS at 0 % and 70 %, and M-sand at 30 % and 100 %, along with 10 % metakaolin as a cement substitute and a constant 0.5 % addition of banana fibre. The resulting concrete mixtures' mechanical and structural performance was assessed. Among the combinations, the F70S30MB mix, comprising 70 % WFS, 30 % M-sand, 10 % metakaolin, and 0.5 % banana fibre, demonstrated comparable properties to conventional concrete. The findings suggest that integrating WFS, M-sand, metakaolin, and banana fibre contributes to sustainable concrete production without compromising performance, offering an environmentally responsible solution for the construction industry.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"304 ","pages":"Article 112832"},"PeriodicalIF":12.7,"publicationDate":"2025-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144713198","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":"MOF-based interfacial phase inhibiting structural damage of carbon fiber reinforced polymer composites derived from high-energy irradiation","authors":"Yue Yin ,&nbsp;Shengkai Liu ,&nbsp;Xianyan Wu ,&nbsp;Dong Liu ,&nbsp;Amna Siddique ,&nbsp;Muhammad Umair ,&nbsp;Chunying Min ,&nbsp;Xinke Zhou ,&nbsp;Lei Chen ,&nbsp;Chuanbin Yu ,&nbsp;Zhiwei Xu","doi":"10.1016/j.compositesb.2025.112817","DOIUrl":"10.1016/j.compositesb.2025.112817","url":null,"abstract":"<div><div>Metal-organic frameworks (MOFs) were strategically integrated into the interfacial region of carbon fiber reinforced polymer (CFRP) composites to investigate their mitigation effects on γ-ray irradiation-induced microstructural degradation. Systematic irradiation experiments were conducted at doses of 0, 250, 500 and 1000 kGy under ambient conditions. Scanning electron microscopy (SEM) results demonstrate that significant debonding and cracking of interfaces exposed to air media at irradiation doses of 500–1000 kGy, concomitant with an increase in oxygen content in the interfacial region is revealed by Energy Dispersive Spectroscopy (EDS). Oxygen permeation along the cracked interfaces into the CFRP interior, driven by irradiation, leading to an increase in the modulus and thickness of the “internal interface” as characterised by nanoindentation tests. In contrast, the MOF-modified composites effectively mitigated interfacial cracking, reducing the expansion of the interfacial layer thickness due to oxygen diffusion from 50 % (pristine) to 33 % (MOF-modified). Nanoscale infrared spectroscopy (nano-IR) demonstrated the MOF modification reduced the radiation-induced carbonyl and amide groups in the near-interface region, confirming suppressed oxidative degradation. Finally, three-point bending tests validated the macroscopic relevance, showing that MOF modification reduced the flexural strength loss from 12.3 % (unmodified) to 7.5 % after 1000 kGy irradiation. This work provides microscopic scale insights into interfacial radiation damage mechanisms and establishes a MOF-based interfacial engineering strategy to simultaneously block oxidative pathways and neutralize radiation species, advancing the design of radiation-resistant CFRPs for extreme environments.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"306 ","pages":"Article 112817"},"PeriodicalIF":12.7,"publicationDate":"2025-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144711045","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}