Composites Science and Technology最新文献

{"title":"Study on mechanical properties degradation of CFRP under laser irradiation","authors":"Mingzhe Li ,&nbsp;Xinyu Jia ,&nbsp;Lihong Gao ,&nbsp;Zhuang Ma ,&nbsp;Jiawei Wang","doi":"10.1016/j.compscitech.2025.111253","DOIUrl":"10.1016/j.compscitech.2025.111253","url":null,"abstract":"<div><div>With the continuous development of laser technology, carbon fiber reinforced polymer (CFRP) used as structural materials for components may increasingly be exposed to the risk of laser irradiation. This study systematically studies the mechanical properties degradation of CFRP under different laser conditions, focusing on its tensile properties and fracture behavior. The research initially investigates the influence of laser irradiation under varying irradiation times, power densities, and coverage areas on the degradation of tensile strength and modulus in CFRP. Utilizing digital image correlation (DIC) technology and fracture morphology analysis, the study delves into the gradual damage process and failure mechanisms of CFRP during loading. Furthermore, a thermo-mechanical coupled numerical model of CFRP is established to explore the degradation of mechanical properties under laser irradiation, effectively capturing the stress-strain variation patterns of both the resin and fiber phases within the CFRP. The results show that the residual strength of CFRP decreases significantly with increasing laser irradiation time, while the trend of residual modulus is not obvious. However, both strength and modulus decrease significantly with increasing laser power density. When laser irradiation and mechanical loading are applied simultaneously, the failure time of CFRP is significantly reduced. Under laser irradiation at 350 W/cm², CFRP with 20–30 % preload tensile strength fails in just 0.6–0.8 s. This study provides valuable insights and theoretical support to enhance the safety of CFRP in high-intensity laser environments.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"269 ","pages":"Article 111253"},"PeriodicalIF":8.3,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144196250","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":"Mechano-electrochemical analysis of lithiation-induced deformation of composite electrodes using carbon fibre as current collector","authors":"Rui Mao ,&nbsp;Sheng Feng ,&nbsp;Zhenkun Lei ,&nbsp;Ruixiang Bai ,&nbsp;Wei Tan","doi":"10.1016/j.compscitech.2025.111251","DOIUrl":"10.1016/j.compscitech.2025.111251","url":null,"abstract":"<div><div>Composite structure batteries often use carbon fibres (CFs) as current collectors. CFs with active materials to form composite electrodes introduces complexity in understanding their role during electrochemical reactions, as the CFs used as current collectors also undergo lithium-ion intercalation, leading to volume expansion and deformation. This study investigates the relationship between lithiation potential and deflection for anode and cathode, graphite-carbon fibre bilayer electrodes (GCBE) and lithium iron phosphate-carbon fibre bilayer electrodes (LCBE), using an in-situ electrochemical cell measurement device. Experimental results indicate that, for the same thickness ratio, during the lithiation the deflection of LCBE is only 13.3 % of that of GCBE. The CFs in LCBE primarily function as current collectors for electron transport and have minimal impact on the potential. In contrast, the CFs in GCBE not only serve as current collectors for electron transport but also participate in partial electrochemical reactions, altering the discharge curve and reducing the electrode potential. A numerical model incorporating mechanical stress (MS) between composite electrode particles and current collector lithiation of composite electrodes was developed. Numerical simulation results reveal that MS in composite electrodes inhibits the concentration, lithiation rate and surface stress of active materials, but promotes them of the current collector, altering the lithium ions distribution especially in the CFs of the LCBE. Additionally, the thickness ratio between the graphite layer and CFs in the GCBE significantly impacts the diffusion rate and the deflection trend during lithiation. When the graphite layer thickness exceeds the CF thickness, the deflection curve shows a monotonically increasing trend. Conversely, when the graphite thickness is less than the CF thickness, the deflection curve exhibits an initial increase followed by a decrease.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"269 ","pages":"Article 111251"},"PeriodicalIF":8.3,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144196252","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-based analysis of damage mechanisms in 3D angle-interlock woven composites under variable impact conditions","authors":"Huajun Ding ,&nbsp;Wenjing Cao ,&nbsp;Bohong Gu ,&nbsp;Ruiyun Zhang ,&nbsp;Baozhong Sun","doi":"10.1016/j.compscitech.2025.111224","DOIUrl":"10.1016/j.compscitech.2025.111224","url":null,"abstract":"<div><div>This study presents an innovative method to improve deep learning segmentation of warp and weft yarns in composites, overcoming the shortcomings of existing deep learning techniques in accurately defining yarns. The method entails threshold screening of yarn area and aspect ratio, combined with morphological opening operations and an improved watershed algorithm to enhance the segmentation map’s accuracy. The findings indicate significant improvements in both continuity and accuracy. An examination of failure modes across various impact energy levels indicates that weft yarns mainly absorb energy and support loads; however, weak interfacial adhesion between yarns and resin leads to debonding, which is the main failure mode. At increased impact energies, cracks develop within the composite components rather than at interfaces. This implies that improving the interfacial bond between yarns and resin could strengthen impact resistance. Based on these observations, the study suggests utilizing resin with superior bonding characteristics to enhance the material’s impact resistance and longevity.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"269 ","pages":"Article 111224"},"PeriodicalIF":8.3,"publicationDate":"2025-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144137702","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":"Modelling the tensile behaviour of aligned discontinuous carbon fibre thermoplastic matrix composites under processing conditions","authors":"Burak Ogun Yavuz ,&nbsp;Ian Hamerton ,&nbsp;Marco L Longana ,&nbsp;Jonathan P-H Belnoue","doi":"10.1016/j.compscitech.2025.111252","DOIUrl":"10.1016/j.compscitech.2025.111252","url":null,"abstract":"<div><div>This study aims to develop a predictive tool for simulating the forming process of aligned discontinuous fibre reinforced composites (ADFRCs). Poly(L-lactic acid) (PLA) reinforced with discontinuous carbon fibres is used to form HiPerDiF tapes. An analytical micromechanical model is developed to predict the tensile stress of the tape as a function of tensile strain rate, incorporating the viscoelastic properties of the PLA matrix and the microstructural characteristics of the tape. The model uses a Maxwell approach for the viscoelastic behaviour of PLA and assumes tensile load transfer between fibres <em>via</em> matrix shearing. Additionally, a degree of crystallisation is integrated to account for a small amount of crystallisation that develops in the PLA whilst brought to temperature. This parameter is determined by fitting experimental data prior to validation. Hence, the model's predictions at temperatures at which the tape was not originally characterised and for non-monotonic deformation speeds fell within the 95 % confidence interval of a new set of experimental data. This work offers a pragmatic approach for optimising the forming of ADFRCs from the knowledge of known microstructural characteristics of the tape (i.e., fibre length, radius and volume fraction and resin viscosity and storage modulus).</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"269 ","pages":"Article 111252"},"PeriodicalIF":8.3,"publicationDate":"2025-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144155187","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":"Magnetic flexible metastructures: developing smart shape-morphing capabilities at extremely low-temperatures","authors":"Wenheng Han ,&nbsp;Wei Gao ,&nbsp;Xingzhe Wang","doi":"10.1016/j.compscitech.2025.111242","DOIUrl":"10.1016/j.compscitech.2025.111242","url":null,"abstract":"<div><div>Achieving intelligent actuation and durability in deformable structures for extreme environments, such as deep space and cryogenic medicine, presents a significant challenge, underscoring the urgent need for advanced materials and innovative designs. Among stimuli-responsive materials, magnetically actuated metastructures stand out for their distinctive magnetomechanical properties and superior actuation performance, providing effective solutions to these challenges. However, research on magnetic smart materials in extremely low-temperature, multi-field environments remains scarce. This study presents magnetically-responsive flexible metastructures, inspired by traditional origami and paper-cutting, capable of non-contact actuation, rapid and reversible responses, and large deformations, at both ambient and cryogenic temperatures (−196 °C). By harnessing the exceptional thermal stability of polyimide (PI) and programmed 3D printing of magnetic domains, the metastructures exhibit remarkable magnetically-driven deformation behavior, achieving up to 40 % shrinkage even under liquid nitrogen conditions. Furthermore, these metastructures demonstrate impressive crawling, grasping, and self-assembly capabilities at extreme low temperatures. Additionally, a magnetically-controlled superconducting flexible antenna is designed, enabling reconfiguration of its operating frequency through magnetically-driven deformation. This work provides a novel approach for realizing smart material functionalities and applications in extreme environments.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"269 ","pages":"Article 111242"},"PeriodicalIF":8.3,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144137703","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 bulletproof composite structure with broadband radar absorbing performance","authors":"Yunyi Wang ,&nbsp;Qian Luo ,&nbsp;Weibang Lyu ,&nbsp;Lichen Wang ,&nbsp;Mingji Chen","doi":"10.1016/j.compscitech.2025.111222","DOIUrl":"10.1016/j.compscitech.2025.111222","url":null,"abstract":"<div><div>Lightweight composite armor and radar absorbing composites (RAC) are two typical applications of advanced composites. However, due to their different requirements in the performance of component materials, the design of a multi-functional structure for both radar absorbing and ballistic protection becomes challenging. This paper reports a multifunctional bulletproof and radar absorbing composite structure (MBRACS) constructed from ultra-high molecular weight polyethylene (UHMWPE), aramid fiber reinforced composites (AFRC), carbon fiber reinforced composites (CFRC), and bulletproof SiC ceramics. Through interfacial impedance design as well as matched design of the flexible and hard materials, the compatibility of broadband radar absorbing performance and efficient bulletproof performance is realized. An innovative method for designing the patterned resistive films (PRFs) as interfacial absorbents by using the hyperelliptic equation has been proposed, which was combined with the genetic algorithm to optimize the patterns of PRFs together with the structural geometric and material parameters of the outer radar absorbing panel (RAP). Meanwhile, the layer thickness ratio of bulletproof SiC ceramics to UHMWPE backplate was optimized under a similar total surface density. The bullet action time and strike position on SiC ceramics, as well as the role of SiC ceramics and UHMWPE backplate in ballistic performance were analyzed. The experimental results show that the proposed MBRACS is capable of efficient radar absorption with −10dB reflectivity in the frequency range of 3.5 GHz–35GHz, and effective protection against three rounds of armor-piercing bullets is also demonstrated.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"269 ","pages":"Article 111222"},"PeriodicalIF":8.3,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144196251","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":"Triboelectric mechanism enhances piezoelectric performance of polyimide composite nanofibrous membrane","authors":"Haodong Lin ,&nbsp;Xu Zhang ,&nbsp;Bilin Zhang ,&nbsp;Liangkang Huang ,&nbsp;Jun Fang ,&nbsp;Xinhai He ,&nbsp;Jianwei Li","doi":"10.1016/j.compscitech.2025.111231","DOIUrl":"10.1016/j.compscitech.2025.111231","url":null,"abstract":"<div><div>Flexible piezoelectric sensor demonstrates significant advancements in wearable electronics. However, the development of piezoelectric materials capable of operating under extreme conditions with exceptional thermal stability remains a critical challenge. Herein, FPI/PAN nanofibrous composite membrane was fabricated via a co-electrospinning technique, achieving a synergistic integration of piezoelectric and triboelectric effects. The synergistic interaction enhances mechanical-to-electrical conversion efficiency through charge superposition and interfacial polarization. The as-prepared sensor demonstrates favorable piezoelectric voltage output of 8 V and rapid response and recovery times (12 ms and 14 ms, respectively). The piezoelectric output remains stable after 10,000 cycles at 15 Hz/10 N, demonstrating excellent durability. In addition, the sensor has the ability to accurately detect diverse human motions, such as joint flexion, eye-blinking, and dynamic impacts. Notably, the FPI/PAN membrane maintains structural stability before 500 °C. Furthermore, it is found that the membrane exhibits a low dielectric constant (1.62–1.67) and smaller dielectric loss (0.0008–0.0024) within the range of 0–1 MHz. This study represents a new path for design and development of self-powered nanofibrous wearable sensors.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"269 ","pages":"Article 111231"},"PeriodicalIF":8.3,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144155185","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 self-poled output performance of flexible and mechanically robust in situ synthesized ZnO/PVDF hybrid piezoelectric composite films for human motion monitoring","authors":"Fan Kang,&nbsp;Hui He,&nbsp;Fangrong Guan,&nbsp;Hongyu Zhai,&nbsp;Cheng Zhang,&nbsp;Yujia Liu,&nbsp;Yue Shen,&nbsp;Luyun Han","doi":"10.1016/j.compscitech.2025.111232","DOIUrl":"10.1016/j.compscitech.2025.111232","url":null,"abstract":"<div><div>Piezoelectric nanogenerator (PENG) has been a promising mechanical energy harvester for portable electronic and wearable devices in recent years, yet polymer-based piezoelectric composites with high flexibility and expansibility remain challenging. Herein, an enhanced self-poled strategy for the flexible AgMo@ZnO/PVDF hybrid piezoelectric composite film fabricated via the casting process is coming up to obtain the high-performance PENG. Attributed to the noncovalent crosslinking network formed with modified MoS₂ (g-MoS₂), high-aspect-ratio silver nanowires (AgNWs) and in-situ synthesized ZnO, the AgMo_0.1@ZnO_6.5/PVDF composite film is induced to crystallize and its tensile strength is as high as 62.8 MPa with the assistance of post-annealing treatment. Notably, the electroactive polar β-phase in the composite film is further stimulated to nucleate, where the relative fraction (F(β)) is increased to 83.4 %. Moreover, the composite film is endowed with ultra-high piezoelectric output (22.65V), which is about 16.5 times higher than that of neat PVDF film benefitting from the hybrid networks of enhanced induced charge and β-phase transfer. Taking the above advantages, the AgNWs-TCFs/PENG assembled with AgNWs@SiO₂NPs-TCF exhibited rapid response time, high sensitivity, outstanding reliability, and stability, which can accurately monitor the plane and bending human motions. We believe this work provides a simple and feasible design idea for creating high-performance PENGs, driving the development of PVDF-based flexible piezoelectric devices.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"269 ","pages":"Article 111232"},"PeriodicalIF":8.3,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144155186","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":"Green surface modification strategy: Synergistic carboxymethyl cellulose -SiO2 hybrid layer boosts interfacial and ablative properties of aramid fiber/EPDM composites","authors":"Youquan Ling ,&nbsp;Bolin Xiao ,&nbsp;Junjie Liu ,&nbsp;Shuangjiang He ,&nbsp;Luxiang Zhao ,&nbsp;Yanjiang Bai ,&nbsp;Xi Zhang ,&nbsp;Mei Liang ,&nbsp;Yang Chen ,&nbsp;Huawei Zou","doi":"10.1016/j.compscitech.2025.111241","DOIUrl":"10.1016/j.compscitech.2025.111241","url":null,"abstract":"<div><div>In this study, a hybrid interfacial phase was constructed between aramid fibers (AFs) and ethylene-propylene-diene monomer (EPDM) using carboxymethyl cellulose (CMC) and silicon dioxide (SiO₂), two environmentally-friendly materials. Specifically, CMC self-assembled into a folded interfacial layer through hydrogen bonding with hydroxyl groups on AF surfaces, while SiO₂ nanoparticles were subsequently adsorbed to generate nanoscale roughness. Low-field NMR and AFM analyses revealed that this synergistic modification significantly enhanced fiber-matrix infiltration, forming mechanical interlocking via hydrogen bonds and topological entanglement. Consequently, the tensile strength of both AFs/EPDM composites (F1414 and F12) was increased by more than 20 %. In situ SEM observations further elucidated the positive correlation between interfacial reinforcement and mechanical performance. Moreover, comparative studies on two AF types (F1414 and F12) indicated that the Si-rich interfacial layer not only improved carbonization density but also enhanced ablation resistance (mass loss reduced by 28 %) and thermal insulation (back temperature reduced by 22.4 °C). This facile and environmentally benign strategy provides a scalable approach for fabricating high-performance composites using sustainable materials.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"269 ","pages":"Article 111241"},"PeriodicalIF":8.3,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144124435","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":"Experimental and modelling of dynamic response and damage of CFRP composites under lightning strike: coupled electrical-thermal-mechanical analysis","authors":"Yuchen Zhou ,&nbsp;Kunkun Fu ,&nbsp;Bin Yang ,&nbsp;Huixin Zhu ,&nbsp;Yan Li","doi":"10.1016/j.compscitech.2025.111237","DOIUrl":"10.1016/j.compscitech.2025.111237","url":null,"abstract":"<div><div>The mechanism by which lightning strikes composite materials involves complex multi-field interactions. This study presents a coupled electrical-thermal-mechanical model designed to predict the dynamic responses and damage of carbon fiber reinforced polymer (CFRP) composites subjected to lightning strikes. Multi-field theories were drawn on and implemented into an electrical-thermal-mechanical finite element (FE) model for simulation. In its thermal analysis, the model incorporated heat absorption during resin decomposition and heat transfer via pyrolysis gas diffusion, while the filtration of pyrolysis gases was factored into the evaluation of impact-induced mechanical damage. A thermo-elastic constitutive relationship was established, including stiffness matrix degradation due to both thermal and mechanical damages. Additionally, artificial lightning strike tests were conducted, utilizing a laser sensor system to measure the dynamic response of CFRP laminates. The results indicate that FE predictions in terms of maximum dynamic displacement, damage area, and depth align closely with experimental findings, thereby demonstrating the effectiveness of the proposed electrical-thermal-mechanical FE model. The propagation of stress waves as well as the formation of pyrolysis gases and their resultant damage were discussed in detail. It was determined that resin pyrolysis and gas filtration are the primary contributors to damage induced by lightning strikes in CFRP composites, as demonstrated through our electrical-thermal-mechanical FE model. Finally, the effectiveness of our FE model especially subjected to lightning strikes with a high current peak was demonstrated.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"269 ","pages":"Article 111237"},"PeriodicalIF":8.3,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144123405","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}