Composites Part B: Engineering最新文献

{"title":"Pulsed laser engineering of composite submicron particles in colloidal systems: A high-performance catalyst for ethanol fuel cells","authors":"Mohammad Sadegh Shakeri ,&nbsp;Oliwia Polit ,&nbsp;Tatiana Itina ,&nbsp;Jacek Gurgul ,&nbsp;Joanna Depciuch ,&nbsp;Magdalena Parlinska-Wojtan ,&nbsp;Tomasz Roman Tarnawski ,&nbsp;Andrzej Dziedzic ,&nbsp;Olga Adamczyk ,&nbsp;Naoto Koshizaki ,&nbsp;Shota Sakaki ,&nbsp;Marcin Zając ,&nbsp;Krzysztof Matlak ,&nbsp;Zaneta Swiatkowska-Warkocka","doi":"10.1016/j.compositesb.2025.112457","DOIUrl":"10.1016/j.compositesb.2025.112457","url":null,"abstract":"<div><div>Nanoparticles are widely regarded as optimal for catalytic reactions; however, larger particles with highly active surfaces may offer an intriguing alternative for advancing catalytic technologies. This study employs pulsed laser melting to transform colloidal copper/magnetite nanoparticles into surface-active submicron Cu_xFe_3-xO₄-Cu_yO-Cu_zFe_1-z composite particles, tailored for ethanol oxidation fuel cells. The findings reveal that colloidal particles tend to cluster into either homogeneous or heterogeneous aggregates, mediated by the surrounding liquid. This clustering aids the formation of desired phases during pulsed laser processing. Temperature-dependent thermodynamic phase transitions, combined with pulse-driven heating-cooling dynamics, promote copper oxidation and magnetite reduction, achieving both compositional control and microstructural surface activation. The synthesized heterostructures demonstrated excellent performance in ethanol oxidation, both as primary catalytic materials and as activity-enhancing supports for platinum. Oxidation state analysis post electrocatalysis indicated a reduction in graphite bonds and an increase in oxygen bonds, attributed to the high oxygen content of the catalysts’ surface. The electrocatalysis ethanol oxidation process generated potent oxidizing agents, including ozone, oxygen and hydroxyl radicals, with the ability of degrading the sp² hybrid structure of graphite. Despite their submicron size, the kinetically activated composite particles exhibited exceptional surface activity, positioning them as cost-effective alternatives to the conventional catalysts for fuel cell technologies.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"299 ","pages":"Article 112457"},"PeriodicalIF":12.7,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143737930","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":"Multifunctional composite ionogel-based sensors for chronic disease surveillance and health monitoring","authors":"Yufang Liao ,&nbsp;Longzhang Niu ,&nbsp;Jinghan Song ,&nbsp;Xiaoli Liang ,&nbsp;Didi Wen ,&nbsp;Yuqi Li ,&nbsp;Lina Niu ,&nbsp;Yongkang Bai","doi":"10.1016/j.compositesb.2025.112450","DOIUrl":"10.1016/j.compositesb.2025.112450","url":null,"abstract":"<div><div>Flexible sensors for real-time health monitoring are vital for early detection and long-term management of chronic diseases. Despite the valuable insights provided by existing health monitoring systems, they are often limited by functionality, dependence on external power sources, and challenges related to portability and user comfort. Herein, we presented a self-powered flexible sensor fabricated from a polyvinylidene fluoride (PVDF) composite ionogel that offers frost resistance, high strength, antibacterial properties, and biocompatibility. As both the friction and conductive layers in a triboelectric nanogenerator-based sensor, the composite ionogel's output performance is significantly enhanced by the synergistic effects of Cu(NO₃)₂ and multi-walled carbon nanotubes (MWCNTs), resulting in a 4.23-fold increase in output voltage. The developed pressure sensor exhibits a sensitivity of 2.66 V kPa⁻¹ within a range of 0.32–1.69 kPa, enabling effective monitoring of human motion and applications such as sign language recognition and chronic disease monitoring, including obstructive sleep apnea hypopnea syndrome (OSAHS). Furthermore, the incorporation of MWCNTs imparts exceptional thermal sensitivity (0.456 % °C⁻¹) to the sensor, allowing accurate real-time body temperature monitoring. These versatile ionogel sensors, which integrate real-time physiological signal tracking, have significant potential to advance wearable medical technologies and personalized healthcare solutions.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"299 ","pages":"Article 112450"},"PeriodicalIF":12.7,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143737929","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":"High-velocity impact response of shear thickening fluid-filled sandwich lattice panels","authors":"Z.P. Gu ,&nbsp;J.Z. Yue ,&nbsp;C.G. Huang ,&nbsp;X.Q. Wu","doi":"10.1016/j.compositesb.2025.112449","DOIUrl":"10.1016/j.compositesb.2025.112449","url":null,"abstract":"<div><div>This study investigates the impact response of sandwich panels with lattice truss cores (SPLTC), filled with shear-thickening fluids (STF), under various impact velocities using fluid-structure interaction (FSI) simulations. A constitutive model for STF, which accounts for bulk compressibility and nonlinear, strain-rate-dependent viscosity at high strain rates, is developed and validated through laser-shock experiments. The shock response of SPLTC with different fillers at impact velocities ranging from 50 to 200 m/s is analyzed using FSI simulations. The results show that STF-filled SPLTC (SPLTC-STF) significantly improves shock resistance and energy dissipation, absorbing 1.6 times more energy than the empty SPLTC. Additionally, the effect of STF thickening properties on the shock behavior of SPLTC-STF is analyzed, revealing that higher STF viscosity reduces deformation, enhances energy absorption, and increases buckling resistance. A two-stage energy dissipation process is identified, consisting of the shock wave attenuation stage and the FSI dissipation stage. While the specific energy absorption (SEA) increases with STF viscosity, it decreases beyond a critical viscosity threshold due to reduced fluidity and weaker FSI effects. These findings underscore the potential of SPLTC-STF for impact-protection applications and highlight the importance of optimizing STF parameters for maximum energy absorption.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"299 ","pages":"Article 112449"},"PeriodicalIF":12.7,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143725839","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":"Enhanced tensile properties of 3D printed soft–hard composites due to Poisson’s ratio mismatch: Experimental and numerical study","authors":"Peijie Sun ,&nbsp;Weizhu Yang ,&nbsp;Yu Zhang ,&nbsp;Baiyu Zhang ,&nbsp;Zheming Fan ,&nbsp;Lei Li","doi":"10.1016/j.compositesb.2025.112413","DOIUrl":"10.1016/j.compositesb.2025.112413","url":null,"abstract":"<div><div>A novel design of soft–hard integrated composite is proposed by embedding hard lattices with controllable Poisson’s ratio (PR) at large deformation into the soft matrix. Extensive numerical simulations of the hard lattices with controllable PR (HLCPR) and the designed hard lattice reinforced soft matrix (HLRSM) are conducted based on constitutive parameters of the soft and hard materials obtained from standard material tests. PolyJet 3D printing technique is employed to fabricate the studied HLCPR and HLRSM samples with lattice of PR from -0.8 to 0.8, and tensile tests were conducted with the help of DIC method to obtain their mechanical properties and capture the fracture behaviors. Numerical results agree well with the test results in terms of effective Young’s modulus, strength and fracture behaviors. Results show that coupling between the soft matrix and the HLCPR due to deformation mismatch leads to significant enhancement of mechanical properties, and such coupling effect varies with the PR of the HLCPR. The HLCPR of PR -0.8 leads to the strongest coupling effect, while that of PR 0.4 exhibits the weakest. The soft matrix delays fracture initiation in the HLCPR and transforms the fracture mode from sudden rupture to a progressive failure. Results also demonstrate that HLRSM with HLCPR of -0.8 exhibits superior performance compared to that with an uncontrollable PR or breaking hard lattices. A theoretical model was also carried out to further interpret the deformation mismatch induced coupling effect. This study offers helpful guidance for developing high-performance composite materials and structures.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"299 ","pages":"Article 112413"},"PeriodicalIF":12.7,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143704293","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":"Corrigendum to “Elastic recovery induced strengthening effect in copper/multilayer-graphene interface regions revealed by instrumental nanoindentation” [Compos Part B 216 (2021) 108832]","authors":"Xueliang Wang ,&nbsp;Yang Su ,&nbsp;Songyang Han ,&nbsp;Martin A. Crimp ,&nbsp;Yaping Wang ,&nbsp;Yu Wang","doi":"10.1016/j.compositesb.2025.112417","DOIUrl":"10.1016/j.compositesb.2025.112417","url":null,"abstract":"","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"297 ","pages":"Article 112417"},"PeriodicalIF":12.7,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143706307","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"In situ multi-metal alloying in laser-based additive manufacturing: A concise review","authors":"Dingmeng Xu ,&nbsp;Wuxin Yang ,&nbsp;Peng Cao","doi":"10.1016/j.compositesb.2025.112443","DOIUrl":"10.1016/j.compositesb.2025.112443","url":null,"abstract":"<div><div>Additive manufacturing (AM) has increasingly been employed for in situ alloying, facilitating the production of multi-metallic components, often referred to as multi-metal AM (MMAM). This approach enables the design of intricate, functional, and highly customized products with superior mechanical performance. Although the advancements in MMAM in-situ alloying have lagged behind those in single-metal AM, notable progress has been achieved in this emerging field. This concise review examines in situ alloying in laser-based AM alloys over the past decade, with a particular focus on titanium (Ti)-based MMAM and other metal systems. It systematically synthesizes current insights, addressing pre-processing preparations (e.g., powder feedstock preparation and modification), in-process adjustments (e.g., alternations in alloy chemistry and parameters optimization), and numerical simulations. These elements collectively exert a profound influence on the microstructural characteristics and mechanical performance of MMAM products.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"299 ","pages":"Article 112443"},"PeriodicalIF":12.7,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143725840","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Rapid estimation of residual stress in composite laminates using a deep operator network","authors":"Seung-Woo Lee ,&nbsp;Teubes Christiaan Smit ,&nbsp;Kyusoon Jung ,&nbsp;Robert Grant Reid ,&nbsp;Do-Nyun Kim","doi":"10.1016/j.compositesb.2025.112409","DOIUrl":"10.1016/j.compositesb.2025.112409","url":null,"abstract":"<div><div>A deep operator network (DeepONet) is designed and developed for rapid estimation of residual stress in composite laminates, which traditionally requires intensive finite element method (FEM) calculations to calibrate the incremental hole-drilling (IHD) method used in measuring residual stresses. The proposed DeepONet model incorporates graph convolution, trigonometric series expansion, and Monte Carlo dropout to effectively learn the relationship between residual stress distribution and the corresponding deformation observed in the IHD procedure. This learning is based on FEM data from various symmetric composite laminate configurations, which are composed of eight layers of fiber-reinforced plates with possible ply orientations at <span><math><mrow><mo>−</mo><mn>45</mn><mo>°</mo></mrow></math></span>, <span><math><mrow><mn>0</mn><mo>°</mo></mrow></math></span>, <span><math><mrow><mn>45</mn><mo>°</mo></mrow></math></span>, and <span><math><mrow><mn>90</mn><mo>°</mo></mrow></math></span>. Trained on 30 configurations, the proposed model exhibits strong generalization capabilities over an additional 40 unseen configurations, achieving a forward strain prediction error of 1.59% and an inverse stress calculation error of 3.92%. These errors are within the range of experimental noise and corresponding stress uncertainty levels commonly encountered in real experiments. The performance of the model suggests the potential for establishing a comprehensive database for the IHD method as applied to composite materials, filling a significant gap in resources when compared to those available for metallic materials.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"299 ","pages":"Article 112409"},"PeriodicalIF":12.7,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143697588","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":"Innovative strategy to reduce autogenous shrinkage in alkali-activated slag using hydrophilic carbon nanotube sponge","authors":"Xinming Wang ,&nbsp;Jing Zhong ,&nbsp;Yubo Sun","doi":"10.1016/j.compositesb.2025.112447","DOIUrl":"10.1016/j.compositesb.2025.112447","url":null,"abstract":"<div><div>Alkali-activated slag (AAS) cement is recognized as a sustainable alternative to Portland cement (PC) binders. However, its practical application in construction is hindered by significant autogenous shrinkage. This study presents an innovative internal curing strategy by incorporating a hydrophilic carbon nanotube sponge (H-CNTSP) into the AAS paste. Due to the high stiffness of the CNT framework, H-CNTSP exhibits remarkable absorption capacities for activator and pore solution, reaching 74 g/g and 67 g/g, respectively—236 % higher than that of conventional superabsorbent polymer (SAP). The addition of just 0.08 <em>wt</em>% H-CNTSP effectively reduces autogenous shrinkage by 71 %, attributed to the sustained liquid release, as confirmed by the monitoring of internal relative humidity. Moreover, the loss in mechanical properties typically associated with internal curing agents is significantly minimized, thanks to the formation of a CNT/reaction product nanocomposite layer with enhanced stiffness. This study offers a promising solution to address the limitations of the AAS system, paving the way for its broader implementation in engineering applications.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"299 ","pages":"Article 112447"},"PeriodicalIF":12.7,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143685516","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Shock response of unidirectional carbon fibre-reinforced polymer composites: Influence of fibre orientation and volume fraction","authors":"Suman Shah,&nbsp;Paul J. Hazell,&nbsp;Hongxu Wang,&nbsp;Juan P. Escobedo","doi":"10.1016/j.compositesb.2025.112438","DOIUrl":"10.1016/j.compositesb.2025.112438","url":null,"abstract":"<div><div>This study investigates the shock wave propagation in unidirectional carbon fibre-reinforced polymer (UD-CFRP) composites, focusing on the effects of varying fibre orientations (0°, 30°, 45°, 60°, and 90°) and fibre volume fractions (64 % and 51 %). Through a series of plate impact experiments at approximately 400 m/s, the results revealed that longitudinal stress was highest at 0° orientation (around 3 GPa) and decreased by nearly 50 % at 90°, where the bulk response mirrored that of pure epoxy. A distinct two-wave structure, consisting of an elastic precursor and a plastic shock wave, was observed at 0° orientation and higher impact velocities, requiring a minimum stress of 3 GPa. Fibre content showed only a marginal influence on shock behaviour, with the epoxy matrix playing a dominant role at higher orientations. These findings highlight the critical role of fibre alignment and matrix properties in governing shock resistance of the composite, suggesting the need for further exploration of matrix materials and composite design optimisation.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"299 ","pages":"Article 112438"},"PeriodicalIF":12.7,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143725838","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Classification and prediction of flexural properties of bamboo slices made from flattened bamboo with a gradient structure based on GA-BP neural network model","authors":"Yuting Yang ,&nbsp;Yu Luan ,&nbsp;Jiarui Xu ,&nbsp;Chaoran Lin ,&nbsp;Yan He ,&nbsp;Qin Su ,&nbsp;Menghong Jiang ,&nbsp;Jianchang Lian ,&nbsp;Xuecai Ye ,&nbsp;Long Feng ,&nbsp;Meiling Chen ,&nbsp;Changhua Fang","doi":"10.1016/j.compositesb.2025.112446","DOIUrl":"10.1016/j.compositesb.2025.112446","url":null,"abstract":"<div><div>Bamboo slices (BS) have been successfully used in bamboo winding composites due to their excellent flexural properties. However, BS with a gradient structure is prone to breakage easily during the winding process, particularly when varying thicknesses are involved. This study investigated flexural properties and size effects of BS, as well as prediction of their flexural properties. A mathematical relationship was established between fiber content of BS and its radial position, revealing an exponential decay function with an average fit quality of 0.9. The flexural strength, flexural modulus and radius of curvature of BS increased with higher fiber content. However, for BS with a thickness of 0.7 mm, the radius of curvature exhibited an inverse relationship with fiber content when the load was applied to the side of BS with fewer vascular bundles. Analysis indicated that BS with thicknesses of 0.3 mm and 0.5 mm can be considered homogeneous materials, while BS with a thickness of 0.7 mm retained the gradient structure and properties of bamboo culm wall. Additionally, BS showed a significant size effect, where thicker BS displayed lower strength due to defect effect, variation of length-thickness ratio and hoop effect. At last, a GA-BP neural network model was developed and validated as an effective tool for predicting BS flexural properties based on their radial position, achieving an accuracy of over 95 %. This study provides valuable insights into the flexural properties and size effects of BS, providing a scientific foundation and technical support for the development of bamboo winding products.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"299 ","pages":"Article 112446"},"PeriodicalIF":12.7,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143725955","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}