Junjie Xu , Xiaolong Hao , Shangkun Huang , Chuanfu Chen , Qi Fan , Lichao Sun , Rongxian Ou , Qingwen Wang
{"title":"Synergistic Improvement of Mechanical, Creep, and Dimensional Stability in Ultra-Highly Filled Wood Fiber/Polyethylene Composites Using Multimodal Alloy Matrices","authors":"Junjie Xu , Xiaolong Hao , Shangkun Huang , Chuanfu Chen , Qi Fan , Lichao Sun , Rongxian Ou , Qingwen Wang","doi":"10.1016/j.compositesa.2025.108830","DOIUrl":"10.1016/j.compositesa.2025.108830","url":null,"abstract":"<div><div>Enhancing the mechanical properties and dimensional stability of ultra-highly filled wood-plastic composites (UH-WPCs) presents significant challenges. This study developed UH-WPCs with 70–90 wt% loading using six binary alloy matrices with multimodal and unimodal distributions. FTIR spectroscopy and thermogravimetric analysis revealed an average MAPE esterification rate of 11.9% at 80 wt% loading. Density, morphology, and dynamic mechanical analysis revealed that multimodal high molecular weight alloys significantly improved uniformity and interfacial adhesion compared to unimodal alloys. This increased tensile, flexural, and impact strengths by 30.1%, 22.7%, and 61.8%, respectively, while reducing thermal expansion, creep, and water absorption by 14.0%, 17.1%, and 13.1%. The low molecular weight fraction of multimodal HDPE facilitated miscibility with MAPE, promoted esterification, and minimized fiber damage, while the high molecular weight fraction enhanced composite integrity and cohesiveness. Notably, chain entanglement within the alloy was more critical than esterification rate in improving the mechanical and dimensional stability of UH-WPCs.</div></div>","PeriodicalId":282,"journal":{"name":"Composites Part A: Applied Science and Manufacturing","volume":"193 ","pages":"Article 108830"},"PeriodicalIF":8.1,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143520271","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Shiyanova Kseniya , Torkunov Mikhail , Gudkov Maksim , Gulin Alexander , Knyazeva Alina , Ryvkina Natalia , Khashirov Azamat , Rabchinskii Maxim , Chmutin Igor , Melnikov Valery
{"title":"Surface modification of polyamide by SWCNTs for application in SLS 3D printing","authors":"Shiyanova Kseniya , Torkunov Mikhail , Gudkov Maksim , Gulin Alexander , Knyazeva Alina , Ryvkina Natalia , Khashirov Azamat , Rabchinskii Maxim , Chmutin Igor , Melnikov Valery","doi":"10.1016/j.compositesa.2025.108829","DOIUrl":"10.1016/j.compositesa.2025.108829","url":null,"abstract":"<div><div>The development of approaches to the creation of new materials with functional properties is one of the main directions for progress of their application in various fields. This work proposes an approach to surface modification of polyamide-12 (PA) powder with single-walled carbon nanotubes (SWCNTs) to impart electrical conductivity and create a material suitable for selective laser sintering (SLS) 3D printing. A previously unknown transition in the conductivity character change with increasing SWCNTs content on the surface of polymer powder particles, demonstrating a change in the state of the electrically conductive network from quasi-planar to spatial, was discovered. The main parameters of the resulting powders were also studied, which determine the possibility of their use for the SLS method: flowability, compactability, transmittance and morphology. As a result, a simple method of new materials obtaining based on PA/SWCNTs with high electrical conductivity was proposed, which are suitable for application in 3D printing.</div></div>","PeriodicalId":282,"journal":{"name":"Composites Part A: Applied Science and Manufacturing","volume":"193 ","pages":"Article 108829"},"PeriodicalIF":8.1,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143526680","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jordi Farjas , Daniel Sanchez-Rodriguez , Sihem Zaidi , Didina-Ramona-Casandra Cârstea , Ahmed Mohamed Saleh Abd Elfatah , Andrei Rotaru , Josep Costa
{"title":"Analytical prediction of the thermal overheating in curing thick layers of fibre-reinforced thermosets","authors":"Jordi Farjas , Daniel Sanchez-Rodriguez , Sihem Zaidi , Didina-Ramona-Casandra Cârstea , Ahmed Mohamed Saleh Abd Elfatah , Andrei Rotaru , Josep Costa","doi":"10.1016/j.compositesa.2025.108815","DOIUrl":"10.1016/j.compositesa.2025.108815","url":null,"abstract":"<div><div>A recurring problem when curing thick specimen carbon-fibre-reinforced polymers is the formation of thermal gradients. Thermal gradients can lead to heterogeneous properties, overcuring and, in some cases, matrix degradation. To address this problem, we have developed a general-purpose analytical solution that allows one to predict the maximum temperature difference within a specimen when the curing reaction takes place under isothermal conditions. The analytical solution is specifically tailored to deal with standard conditions in the manufacture of composites and can be applied to different resins and prepregs. In addition, it allows one to determine the conditions for when a thermal runaway will occur. The analytical solution was validated by comparing the analytical predictions with numerical and experimental results.</div></div>","PeriodicalId":282,"journal":{"name":"Composites Part A: Applied Science and Manufacturing","volume":"193 ","pages":"Article 108815"},"PeriodicalIF":8.1,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143526681","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Kaixin Xia , Fengrui Liu , Yu Gong , Xinxin Qi , Linjuan Wang , Libin Zhao , Ning Hu
{"title":"Analytical modeling for four-point asymmetric end-notched flexure delamination test of composite laminates considering interlaminar friction","authors":"Kaixin Xia , Fengrui Liu , Yu Gong , Xinxin Qi , Linjuan Wang , Libin Zhao , Ning Hu","doi":"10.1016/j.compositesa.2025.108824","DOIUrl":"10.1016/j.compositesa.2025.108824","url":null,"abstract":"<div><div>The four-point asymmetric end-notched flexure (4AENF) test under shear loading often involves a mode I component, making it a representative mixed-mode I/II delamination problem. The 4AENF configuration reflects the general delamination behavior in defective laminates, emphasizing the need to characterize interlaminar fracture toughness. Despite its importance, research on 4AENF is limited, and existing models overlook interlaminar friction. This study develops a theoretical model based on Timoshenko beam theory and a two-point friction assumption, enabling analytical calculation of total strain energy release rate (SERR) for any 4AENF configuration, explicitly considering interlaminar friction. Experimental tests and finite element method (FEM) analyses validate the model, using unidirectional (UD) symmetric, UD asymmetric, and multidirectional (MD) asymmetric laminates. Theoretical predictions, experimental results, and FEM analyses are compared, confirming the model’s applicability and highlighting the effects of interlaminar friction.</div></div>","PeriodicalId":282,"journal":{"name":"Composites Part A: Applied Science and Manufacturing","volume":"193 ","pages":"Article 108824"},"PeriodicalIF":8.1,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143520270","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Fengdong Teng, Na Li, Ying Yuan, Junrong Yu, Yan Wang, Zuming Hu
{"title":"Efficient preparation and multifunctional application of low shrinkage para aramid aerogels","authors":"Fengdong Teng, Na Li, Ying Yuan, Junrong Yu, Yan Wang, Zuming Hu","doi":"10.1016/j.compositesa.2025.108826","DOIUrl":"10.1016/j.compositesa.2025.108826","url":null,"abstract":"<div><div>The complex preparation process and high shrinkage of poly(p-phenylene terephthalamide) (PPTA) aerogel limit its wider application. Herein, PPTA and heterocyclic aramid (HPPTA) prepolymer were secondary polymerized to obtain Block-PPTA (BPPTA) with both rigid and flexible segments in the molecular chain. The rigid and flexible segments in molecular chain under non-solvent enable the rapid transformation of BPPTA solutions into well-shaped BPPTA gels. The BPPTA aerogel exhibits the advantages of low shrinkage, high thermal insulation, and high mechanical strength. Then, a small amount of MXene and AgNWs were attached to the surface of BPPTA aerogels by layer-by-layer spraying method, which not only enhanced the flame retardancy capability of the aerogels, but also made organic aerogels possible to be applied in the fields of electromagnetic interference shielding and thermoelectric conversion. This work provides an ideal strategy for the efficient preparation of low shrinkage para aramid aerogels and expands the application areas of aerogels.</div></div>","PeriodicalId":282,"journal":{"name":"Composites Part A: Applied Science and Manufacturing","volume":"193 ","pages":"Article 108826"},"PeriodicalIF":8.1,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143508861","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Umeir Khan , Vincent K. Maes , Robert Hughes , Jon Wright , Petar Zivkovic , Turlough McMahon , James Kratz
{"title":"In-plane waviness parameterisation from in-factory photographs of non-crimp fabrics","authors":"Umeir Khan , Vincent K. Maes , Robert Hughes , Jon Wright , Petar Zivkovic , Turlough McMahon , James Kratz","doi":"10.1016/j.compositesa.2025.108822","DOIUrl":"10.1016/j.compositesa.2025.108822","url":null,"abstract":"<div><div>Applying a Deep Learning-based framework has enabled macroscale waviness of Non-Crimp Fabric preforms to be quantified through analysis of in-factory photographs in a fast (∼45 s total processing time per photo) and straightforward way. Historically, image processing techniques, i.e. 2D Fast Fourier Transforms have been used to trace waviness. However, these approaches show shortcomings when applied to visually-complex surfaces, i.e. stitched preforms. In this study, a U-Net model was trained to segment tow and gap regions from in-factory photographs. Applying the model enabled waviness tracings that were then numerically parameterisation. Further stress-testing of the technique was used to interrogate the waviness in (a) visually-similar photographs, and (b) those obtained with compromised imaging conditions. The key finding from this study is that Deep Learning has shown potential in enabling a rapid and cost-effective form of quantitative inspection.</div></div>","PeriodicalId":282,"journal":{"name":"Composites Part A: Applied Science and Manufacturing","volume":"193 ","pages":"Article 108822"},"PeriodicalIF":8.1,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143511929","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Impact damage detection on carbon fiber reinforced polymer tube by a mutual differential Bobbin probe","authors":"Wei Guo , Lihua Guo , Hao Xu , Weijun Zhu , Shejuan Xie , Zhenmao Chen , Toshiyuki Takagi , Tetsuya Uchimoto","doi":"10.1016/j.compositesa.2025.108806","DOIUrl":"10.1016/j.compositesa.2025.108806","url":null,"abstract":"<div><div>Carbon fiber reinforced polymer (CFRP) tube is utilized in large aperture deployable space antennas for its superior material properties. Impact damages on CFRP tube can significantly impair the load-bearing capacity of the tubes. Efficient and convenient non-destructive evaluation method of impact damage in CFRP tubes is essential. This study develops a high-frequency eddy current testing (HF ECT) finite element analysis method that accounts for both the dielectric properties and anisotropic conductivity of CFRP, and establishes a fiber bundle model that explains the operating mechanism of displacement current and eddy currents in CFRP, offering guidance for predicting HF ECT signals in CFRP. A high signal-to-noise ratio mutual differential Bobbin probe is developed specifically for detecting impact damage in CFRP tubes. A HF ECT experiment system is constructed and validated using impact damages induced by a force hammer, demonstrating the effectiveness of method and probe, and the invisible impact defect is detected successfully.</div></div>","PeriodicalId":282,"journal":{"name":"Composites Part A: Applied Science and Manufacturing","volume":"193 ","pages":"Article 108806"},"PeriodicalIF":8.1,"publicationDate":"2025-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143511928","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Keith D. Humfeld , Geun Young Kim , Ji Ho Jeon , John Hoffman , Allison Brown , Jonathan Colton , Shreyes Melkote , Vinh Nguyen
{"title":"Co-training of multiple neural networks for simultaneous optimization and training of physics-informed neural networks for composite curing","authors":"Keith D. Humfeld , Geun Young Kim , Ji Ho Jeon , John Hoffman , Allison Brown , Jonathan Colton , Shreyes Melkote , Vinh Nguyen","doi":"10.1016/j.compositesa.2025.108820","DOIUrl":"10.1016/j.compositesa.2025.108820","url":null,"abstract":"<div><div>This paper introduces a Physics-Informed Neural Network (PINN) technique that co-trains neural networks (NNs) that represent each function in a system of equations to simultaneously solve equations representing an out-of-autoclave (OOA) cure process while conducting optimization in adherence to process requirements. Specifically, this co-training approach benefits from using NNs to represent OOA inputs (air temperature profile) and outputs (part and tool temperature profiles and degree of cure). Production requirements can then be levied on the inputs, such as maximum air temperature and minimum cure cycle, and simultaneously on the outputs, such as degree of cure, maximum part temperature, and part temperature rate limits. Co-training the NNs results in an optimized input producing outputs that meet all OOA process requirements. The technique is validated with finite element (FE) simulations and physical experiments for curing a Toray T830H-6 K/3900-2D composite panel. Hence, this novel approach efficiently models and optimizes the OOA cure process.</div></div>","PeriodicalId":282,"journal":{"name":"Composites Part A: Applied Science and Manufacturing","volume":"193 ","pages":"Article 108820"},"PeriodicalIF":8.1,"publicationDate":"2025-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143487279","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Daowei Lai , Yanfei Ma , Bin Li , Zhenjun Peng , Wufang Yang , Qiangliang Yu , Xiangfei Zhao , Bo Yu , Chufeng Sun , Feng Zhou
{"title":"Superior multifunctional protecting property of novel slippery integrated thin coating balancing surface and internal design","authors":"Daowei Lai , Yanfei Ma , Bin Li , Zhenjun Peng , Wufang Yang , Qiangliang Yu , Xiangfei Zhao , Bo Yu , Chufeng Sun , Feng Zhou","doi":"10.1016/j.compositesa.2025.108774","DOIUrl":"10.1016/j.compositesa.2025.108774","url":null,"abstract":"<div><div>We developed a novel solid–liquid composite coating with a gradient distribution of liquid-like brush grafting polysilazane and well-distributed modified graphene oxide, integrating anti-corrosion and underwater anti-adhesion properties, which exhibits stale anti-fouling and drag reduction properties. The corrosion current of the coating decreases by six orders of magnitude compared to that of the substrate, and it has an extremely long salt spray lifespan of over 1440 h with the thickness approximately 20 μm. It also achieves over 97 % reduction in microbial contamination, and the maximum drag reduction rate reaches about 36 %, exhibiting outstanding antifouling and drag reduction performance. Impressively, the drag reduction rate remains very stable even after the corrosion test, followed by algae adhesion tests and after abrasion. Even the coating is worn, it can still maintain relatively stable protective performance. This work provides a novel and feasible method for the engineering application of ocean antifouling and drag reduction.</div></div>","PeriodicalId":282,"journal":{"name":"Composites Part A: Applied Science and Manufacturing","volume":"192 ","pages":"Article 108774"},"PeriodicalIF":8.1,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143463292","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Optically/thermally dual-responsive shape memory superhydrophobic surfaces with advanced multi-functionalities","authors":"Yanlong Zhan , Zhenqian Pang , Gang Tan","doi":"10.1016/j.compositesa.2025.108812","DOIUrl":"10.1016/j.compositesa.2025.108812","url":null,"abstract":"<div><div>Intelligent responsive surfaces hold immense potential for cutting-edge technological applications. In this study, we report the fabrication of optically and thermally dual-responsive shape memory superhydrophobic surfaces, achieved through the synergistic integration of 3D printing, magnetron sputtering, and chemical modification techniques. These multifunctional surfaces exhibit exceptional shape memory properties, activated by optical and thermal stimuli, enabling reversible transitions in both surface structure and wettability. Furthermore, they demonstrate superior photothermal conversion efficiency and serve as programmable, rewritable platforms for precise control over liquid directional transport and tunable wetting gradients, ranging from superhydrophobicity to superhydrophilicity. Notably, the surfaces dynamically adjust their structural color via orientation changes in the array, all while maintaining outstanding shape memory stability and durability. The versatile applications of these intelligent surfaces encompass directional fluid transport, wetting gradient manipulation, wettability switching, programmable interfaces, structural coloration, and even extend to aerospace technologies, such as foldable antennas. This work represents a significant advancement in the development of smart responsive surfaces, highlighting their broad applicability and transformative potential across diverse technological domains.</div></div>","PeriodicalId":282,"journal":{"name":"Composites Part A: Applied Science and Manufacturing","volume":"192 ","pages":"Article 108812"},"PeriodicalIF":8.1,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143454608","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}