Composites Science and Technology最新文献

{"title":"Transfer learning-guided generative laminate design framework with limited data availability","authors":"Siyuan Chen,&nbsp;Zhixing Li,&nbsp;Jinzhao Huang,&nbsp;Tiantian Yang,&nbsp;Yunpeng Gao,&nbsp;Jia Hu,&nbsp;Guang Yang,&nbsp;Licheng Guo","doi":"10.1016/j.compscitech.2025.111292","DOIUrl":"10.1016/j.compscitech.2025.111292","url":null,"abstract":"<div><div>Fiber-reinforced composites offer significant tailoring potential, but extensive design parameters and the need to explore new design spaces pose substantial challenges in laminate designs. This paper presents a Transfer learning-guided Generative Laminate Design Framework (TGLDF) to efficiently extend design spaces with limited data availability. A generator in the TGLDF rapidly produces design parameters bounded within design ranges through a data scaling method, along with a neural network-based discriminator fine-tuned with small datasets to predict mechanical properties within new design spaces. Customized generation losses are incorporated to enable the generations to achieve design objectives, such as desired strength and torsional stiffness in this paper. Two examples were used to validate the TGLDF under different new design spaces. These examples include notched laminates under uniaxial tension and composite tubes subjected to coupled internal pressure and axial compression, involving new materials, ply numbers, and loading conditions. The results show that only small datasets are needed to perform inverse design in these new design spaces. A comparative analysis with finite element simulations and Genetic Algorithms (GAs) demonstrates the effectiveness and superiority of the TGLDF, which outperforms GAs by integrating random noise to learn the distribution of optimal solutions. In addition, the concatenating of one-hot encodings and continuous parameters enables the TGLDF to extend to other design scenarios easily.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"270 ","pages":"Article 111292"},"PeriodicalIF":8.3,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144633434","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":"Investigating the interchangeability of low-velocity impact and quasi-static indentation Tests: Effects on the residual strength of hybrid aluminum/CFRP laminates","authors":"Musthafa Akbar ,&nbsp;Satoshi Kobayashi","doi":"10.1016/j.compscitech.2025.111293","DOIUrl":"10.1016/j.compscitech.2025.111293","url":null,"abstract":"<div><div>This study uses numerical methods, validated through laboratory experiments, to compare the mechanical behavior of hybrid aluminum/CFRP laminates under low-velocity impact (LVI) and quasi-static indentation (QSI) loading conditions. The study demonstrates that although both loading types show comparable force-displacement responses within a limited range, the divergence increases at higher LVI energy levels. Oscillations in the LVI force-displacement curve become more pronounced due to inertia and damage formation. In terms of damage, intralaminar failure in CFRP layers occurs under both loading conditions, but delamination is more pronounced under LVI loading. The study also finds that QSI produces more visible contact traces on the specimen surface compared to LVI, with smaller indenters resulting in clearer damage patterns. Simulations of tensile strength after impact reveal that LVI leads to lower residual tensile strength compared to QSI. Based on these findings, we conclude that QSI can be used as a substitute for LVI testing under certain conditions, particularly for low-impact energies (5–15 J), where delamination does not occur. However, for higher impact energies (20–30 J), significant differences in damage mechanisms indicate that the two methods should not be considered interchangeable for all applications. Further research is needed to establish clear criteria for using quasi-static tests as substitutes for low-velocity impact tests, especially for specific material configurations and conditions.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"270 ","pages":"Article 111293"},"PeriodicalIF":8.3,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144633433","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":"Reactive atomistic molecular dynamics simulations of interfacial damage phenomena in graphene/epoxy nanocomposites","authors":"Jin-Ho Bae ,&nbsp;Taegeon Kil ,&nbsp;Seoyoung Moon ,&nbsp;Min Wook Lee ,&nbsp;Beomjoo Yang","doi":"10.1016/j.compscitech.2025.111289","DOIUrl":"10.1016/j.compscitech.2025.111289","url":null,"abstract":"<div><div>The mechanical behavior of graphene/epoxy nanocomposites is governed by their constituents and interfacial interactions, making atomistic simulations essential for understanding interfacial damage. In this study, reactive molecular dynamics (MD) simulations utilizing a reactive force field (ReaxFF) are employed to examine the interfacial properties of graphene/epoxy nanocomposites. The ReaxFF framework, which calculates the total system energy as a function of bond-order-dependent potentials, enables the modeling of chemical reactions and bond failure. Initially, graphene/epoxy interface models are constructed to systematically evaluate the influence of key parameters, including the number of graphene layers (1, 2, 3, or 4 layers), interlayer spacing (50, 100, or 200 Å), and pull-out loading rate (0.001, 0.01, or 0.1 Å/fs), on interfacial properties. Subsequently, a representative interface model is used in reactive MD simulations to predict interfacial behavior and evaluate interfacial damage under both normal and shear pull-out modes. The simulation results show that changes in the interlayer spacing distance lead to significant variations in the elastic modulus of the interface, ranging from 3.3 % to 273.8 %. A lower pull-out loading rate results in a stiffer interfacial response. The simulations reveal that interfacial damage is induced by the stretching of entangled epoxy chains and the failure of epoxy chain components, such as ethylene linkages and hydroxyl and amino groups. Moreover, these epoxy chain failures correspond to the initiation and propagation of cracks at the interface, providing a detailed mechanism for mechanical degradation of graphene/epoxy nanocomposites.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"270 ","pages":"Article 111289"},"PeriodicalIF":8.3,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144633432","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":"An anisotropic multi-phase field model for damage of fiber reinforced composites","authors":"Yuanfeng Yu ,&nbsp;Chi Hou","doi":"10.1016/j.compscitech.2025.111288","DOIUrl":"10.1016/j.compscitech.2025.111288","url":null,"abstract":"<div><div>In this paper, an anisotropic multi phase field variables model is proposed for the failure of fiber reinforced composites. In composites, to calculate the strain field at different fiber orientations, the strain in the global coordinate system can be converted to strain in local one by means of a coordinate transformation matrix. Inspired by this idea, a coordinate transformation matrix for the phase field variable is proposed. Based on the coordinate transformation, an anisotropic crack density function capable of describing different fiber orientations is constructed. Secondly, the phase field distribution function and crack bandwidths corresponding to the new crack density function are derived, the influence of different model parameter on the fracture properties are further analyzed, and the reasonable value ranges of these parameters are determined. In order to characterize the effects of different properties of fiber and matrix on the damage evolution of the structure, a mixed mode driving force is proposed. Meanwhile, based on the driving force, the fiber and matrix damage initiation criteria are derived, and the Hashin failure criteria of different dimensions corresponding to the fiber and matrix under tensile conditions are obtained, thus determining the damage evolution laws of fibers and matrix. Finally, the presented model is validated by some examples. The numerical results indicate that the new model can be effectively adopted to study the interlaminar and interface damage of composites under different modes, showing the validity of the proposed model.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"270 ","pages":"Article 111288"},"PeriodicalIF":8.3,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144604862","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 energy storage performances in multilayer composites via spatial structure design","authors":"Qixiong Zhang,&nbsp;Zhibiao Zhu,&nbsp;Jiujun Zhu,&nbsp;Hai Jiang,&nbsp;Yafei Hou,&nbsp;Jing Cuan,&nbsp;Weiping Li","doi":"10.1016/j.compscitech.2025.111286","DOIUrl":"10.1016/j.compscitech.2025.111286","url":null,"abstract":"<div><div>The growing demand for renewable energy storage has highlighted the demand of dielectric capacitors with high performances. While multilayer composites show promise by combining insulation layers and polarization layers, their performance optimization remains challenging due to complex layers number and insulation/polarization volume content dependent behaviors. This work presents an optimized multilayer composite via spatial structure design that strategically combines the Ni(OH)₂@PDI/P(VDF-HFP) (NPP) insulation layers and Ni(OH)₂/P(VDF-HFP) (NP) polarization layers. Through precise regulation of layers number and NPP volume content within the multilayer composite, the optimized interlayer interfacial effects, the coupling effects of insulation and polarization layers, as well as the related intralayer contributions result in a significantly discharged enhanced energy storage density of 32.1 J/cm³ and a high charge-discharge efficiency of 80.7 % at 705.7 MV/m for the 4 layers 62.5 vol% NPP/NP composite. Our findings provide both fundamental insights into multilayer dielectric design and a practical strategy for developing high-capacity energy storage dielectrics for renewable energy storage applications.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"270 ","pages":"Article 111286"},"PeriodicalIF":8.3,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144596073","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 constructing carbon nanotube/carbon fiber-based composite: synergistic effect, multifunctional performances and versatility","authors":"Qingqing Wang ,&nbsp;Tieliang Zhang ,&nbsp;Ping Ma ,&nbsp;Jianjun Li ,&nbsp;Yicheng Yu ,&nbsp;Cong Wang ,&nbsp;Haibao Lu","doi":"10.1016/j.compscitech.2025.111284","DOIUrl":"10.1016/j.compscitech.2025.111284","url":null,"abstract":"<div><div>A green, environmentally friendly, and low-cost method is used to grow carbon nanotubes on the surface of carbon fibers, resulting in CNTs/CF composites. The mechanical properties, thermal conductivity, microwave absorption performance and ablation resistant behaviour of the prepared composites are investigated. Similar with effect of ‘lying on a bed of nails’, CNTs/CF composite exhibits low density (0.55 g/cm³) and can withstand loads up to 2000 times their own weight while maintaining structural integrity. The prepared composite not only exhibits enhanced heat transfer compared with copper, but also demonstrates electromagnetic wave absorption capabilities and ablation resistance. Remarkable improvement in electromagnetic wave absorption has been demonstrated with introduction of reduced graphene oxide (rGO), which confirms the “versatility” of the composting process in such reaction system. Correspondingly, the maximum reflection loss of the composite material can reach −54.6 dB. For ablation resistance, CNTs/CF composite can withstand high temperatures up to about 1200 °C without any changes in macroscopic morphology. These integrated characteristics make CNTs/CF composite a promising lightweight structural material for aerospace, military, and other industries.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"270 ","pages":"Article 111284"},"PeriodicalIF":8.3,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144596069","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":"Hybrid effect in multi-directional carbon/glass composites","authors":"Guillermo Idarraga ,&nbsp;J. David Acosta ,&nbsp;Meisam Jalalvand ,&nbsp;Juan Meza ,&nbsp;Michael R. Wisnom","doi":"10.1016/j.compscitech.2025.111285","DOIUrl":"10.1016/j.compscitech.2025.111285","url":null,"abstract":"<div><div>The hybrid effect is the enhancement in the failure strain of the low strain material in a hybrid composite compared with the failure strain of the same material in a non-hybrid composite. It has been well established that in unidirectional carbon/glass composites under tension with the carbon layer as the low strain material, the hybrid effect depends mainly on the carbon layer thickness. In this work, experimental and numerical results are presented to show that in multidirectional composite laminates with two separated 0° carbon plies, the interaction between the 0° carbon layers and the presence of matrix cracking in the adjacent layers can significantly change the carbon layer fragmentation strain and consequently modify the observed hybrid effect. The interaction between 0° carbon plies is analysed using the induced strain increment after the fragmentation of one of the 0° carbon plies. The results show that the layups with lower interaction between the two 0° carbon plies and those with no matrix cracking in the neighbouring layers have a higher hybrid effect.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"270 ","pages":"Article 111285"},"PeriodicalIF":8.3,"publicationDate":"2025-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144596074","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":"Raman spectroscopic stress mapping of carbon nanotube coated single high modulus carbon fibres in compression","authors":"Cameron G. Woodgate ,&nbsp;David B. Anthony ,&nbsp;Richard S. Trask ,&nbsp;Milo S.P. Shaffer ,&nbsp;Stephen J. Eichhorn","doi":"10.1016/j.compscitech.2025.111283","DOIUrl":"10.1016/j.compscitech.2025.111283","url":null,"abstract":"<div><div>Single walled carbon nanotubes (SWCNTs) can be introduced onto the surface of carbon fibres to modulate stress transfer, introduce functionality, or act as local mechanical sensors. This study explores the effects of such a coating on the micromechanics of single fibre epoxy composites, under compression, using <em>in situ</em> Raman spectroscopy to obtain local and spatial stress maps. These maps can be analysed to quantify interfacial shear stress and show that the introduction of the SWCNTs increases the maximum interfacial shear stress of this carbon fibre epoxy system (M55/M46-DGEBA) from 23 MPa to 45 MPa. There is a corresponding decrease in the critical stress transfer length (from 420 μm to 252 μm), verified by optically measuring mean fragment lengths. The use of SWCNTs as a means to enhance the compressive properties of bulk carbon fibre-based composites is discussed, in the light of these new micromechanics results.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"270 ","pages":"Article 111283"},"PeriodicalIF":8.3,"publicationDate":"2025-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144596068","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":"Integrated experimental and computational approach to analyse and design multiphase nanocomposites for broadband reflection loss","authors":"A. Phanendra Kumar ,&nbsp;Rishi Raj ,&nbsp;Dineshkumar Harursampath ,&nbsp;Sathiskumar Anusuya Ponnusami","doi":"10.1016/j.compscitech.2025.111281","DOIUrl":"10.1016/j.compscitech.2025.111281","url":null,"abstract":"<div><div>This study presents an integrated experimental and computational methodology for analysing multiphase composites with ceramic (BaTiO<span><math><msub><mrow></mrow><mrow><mn>3</mn></mrow></msub></math></span>, CoFe<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span>O<span><math><msub><mrow></mrow><mrow><mn>4</mn></mrow></msub></math></span>) inclusions and carbon-based inclusions (MWCNTs) aimed at broadband electromagnetic (EM) reflection loss (RL) applications. Characterisation techniques (SEM, TGA, and X-ray 3-D tomography) were employed to analyse the nanocomposite. Fabricated nanocomposites were tested using a two-port VNA, and the EM properties of the composites were derived using the Nicolson-Ross-Weir (NRW) algorithm. An in-house optimisation tool is used to extract the EM properties of individual nanoparticles and later validate them using the experimental results. The RL spectrum in the frequency range is attained using the in-house Transfer Matrix Method (TMM)-based tool, which is validated using the scattering parameters obtained from the two-port VNA. Later, parametric studies are carried out using the validated in-house tools by varying the influencing parameters. Results have shown that composites with high BaTiO<span><math><msub><mrow></mrow><mrow><mn>3</mn></mrow></msub></math></span> or MWCNT contents exhibited impedance mismatches, leading to immediate EM reflection upon interaction with the nanocomposite surface. In contrast, CoFe<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span>O<span><math><msub><mrow></mrow><mrow><mn>4</mn></mrow></msub></math></span>-dominant composites achieved broadband RL (<span><math><mo>&lt;</mo></math></span> -10 dB) over a bandwidth of 4.4 GHz across different thicknesses even at higher loading due to improved impedance matching. Incident transverse magnetic (TM) polarised EM waves provided broadband RL up to 80° incidence. In contrast, transverse electric (TE) polarised EM waves showed broadband RL at angles up to 40° due to different field interactions. The proposed generalised approach offers a versatile framework for designing nanocomposites tailored for specific broadband or frequency-selective RL applications.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"270 ","pages":"Article 111281"},"PeriodicalIF":8.3,"publicationDate":"2025-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144580937","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":"Vanillin-based imine curing agent for high-strength, recyclable, aging-resistant, and anticorrosive epoxy composite coatings","authors":"Shaoheng Yang ,&nbsp;Haohao Hu ,&nbsp;Zhengbang Tong ,&nbsp;Haojun Lin ,&nbsp;Hongbo Zeng ,&nbsp;Yang Hu ,&nbsp;Zhuohong Yang","doi":"10.1016/j.compscitech.2025.111282","DOIUrl":"10.1016/j.compscitech.2025.111282","url":null,"abstract":"<div><div>Epoxy coatings are widely and promisingly used as anticorrosive coatings matrix for marine equipment and engineering protection because of their excellent strength and anti-corrosive performance. However, the intrinsic characteristic of traditional epoxy thermosets causes the resulting coating with unrecyclability, inadequate outdoor aging resistance and poor reprocessable performance. To address the limitations of traditional epoxy coatings, this research used polyether amine D230 and bio-based vanillin to create an amine curing agent (VAN-D230) containing imine bonds. This curing agent was subsequently combined with modified graphene oxide and epoxy resin to produce the composite coatings, which achieved tensile strength, bending strength, storage modulus at room temperature, and a glass transition temperature of 63.43 MPa, 114.97 MPa, 3799 MPa, and 96.2 °C, respectively. Furthermore, the composite material exhibited excellent stress relaxation properties, allowing physical restoration at 190 °C and 20 MPa, with a recovery rate exceeding 89 %. The cured samples also demonstrated outstanding aging resistance for 40 days and anti-corrosion behavior lasting 100 days. Taken together, this work offers a promising procedure to develop a sustainable vanillin-based imine curing agent for epoxy coatings with excellent mechanical strength, recyclability, aging resistance, reprocessability and anti-corrosion.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"270 ","pages":"Article 111282"},"PeriodicalIF":8.3,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144535459","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}