Composites Part C Open Access最新文献

Addressing structural certification challenges with FEM analysis in electric seaplane CFRP wing

IF 5.3

Composites Part C Open Access Pub Date : 2025-03-14 DOI: 10.1016/j.jcomc.2025.100584

Jonathan Tapullima, Bjørn Haugen

{"title":"Addressing structural certification challenges with FEM analysis in electric seaplane CFRP wing","authors":"Jonathan Tapullima, Bjørn Haugen","doi":"10.1016/j.jcomc.2025.100584","DOIUrl":"10.1016/j.jcomc.2025.100584","url":null,"abstract":"<div><div>This study explores the structural certification challenges and business objectives for an electric seaplane in the general aviation category, emphasizing the verification of the composite structure under EASA CS-23. Sandwich structures and bonded joints offer significant weight reduction and structural efficiency advantages, crucial for electric aircraft. However, a fatigue damage and tolerance evaluation under CS-23 Level 4 increase these challenges, requiring exhaustive testing, analysis, and documentation to meet stringent regulatory standards. Certification complexities are further intensified by the differences in passenger capacity constraints between Level 3 and Level 4 aircraft, suggesting pursuing Level 3 certification and impacting on the business case of the emerging sustainable aviation. To evaluate the impact on the weight penalties, this study conducts a comprehensive FEM validation and comparison of two different CFRP wing structural analyses: one to comply with Level 3 certification using a monocoque sandwich structure with a bonded assembly, and the other to comply with Level 4 certification using semi-monocoque with a mechanically fastened assembly. The use of different strain allowable values for both levels defined the current strain constraints range for the composite wings, where the monocoque structure analysis showed a mass reduction of up to 19 % on average.</div></div>","PeriodicalId":34525,"journal":{"name":"Composites Part C Open Access","volume":"17 ","pages":"Article 100584"},"PeriodicalIF":5.3,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143685727","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Origami-inspired self-sensing foldable composite structures: Experiments and modeling

IF 5.3

Composites Part C Open Access Pub Date : 2025-03-08 DOI: 10.1016/j.jcomc.2025.100583

Israr Ud Din , Adnan Ahmed , Kamran A. Khan

{"title":"Origami-inspired self-sensing foldable composite structures: Experiments and modeling","authors":"Israr Ud Din , Adnan Ahmed , Kamran A. Khan","doi":"10.1016/j.jcomc.2025.100583","DOIUrl":"10.1016/j.jcomc.2025.100583","url":null,"abstract":"<div><div>Origami-inspired self-sensing foldable structures made from fiber-reinforced polymer composites (FRPCs) can be created using piezoresistive fabric laminates. These foldable structures enable real-time monitoring of the state of folds throughout the folding and unfolding processes. This study develops a simplified finite element (FE) modeling framework to predict the piezoresistive-mechanical response of the origami-inspired foldable structures. The model, implemented via UMATHT in ABAQUS®, leverages the analogy between electrical conduction and steady-state heat conduction. The piezoresistive-mechanical response of a simple folding hinge was predicted using the model and compared with the electromechanical folding experimental results. For this purpose, the hinge was manufactured by embedding rGO-coated fabric as a substrate for prepreg patches, which were consolidated using hot compression molding with varying sizes of the folding regions (3, 6, 9, and 12 mm). The folding tests revealed that the moment (M) and curvature (k) during bending depend on the fold region size (b), which in turn affects piezoresistivity, quantified as the fractional change in resistance (FCR). An inverse relationship was observed between moment, curvature, and piezoresistivity as the fold region size varied. Finally, the model was applied to predict piezoresistivity in two structures: a waterbomb base structure and an auxetic structure. We concluded that this modeling framework can be effectively used to predict the electromechanical response of full-scale foldable structures, calibrated with the experimental results of a simple folding hinge with a specific folding size.</div></div>","PeriodicalId":34525,"journal":{"name":"Composites Part C Open Access","volume":"17 ","pages":"Article 100583"},"PeriodicalIF":5.3,"publicationDate":"2025-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143610166","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Large-area high thermal conductivity graphite-carboxymethylcellulose film easily produced by mechanical exfoliation of natural graphite using a three-roll mill

IF 5.3

Composites Part C Open Access Pub Date : 2025-03-04 DOI: 10.1016/j.jcomc.2025.100580

Junhao Wang , Hongsheng Lin , Jonathon D. Tanks , Yoshihiko Arao

{"title":"Large-area high thermal conductivity graphite-carboxymethylcellulose film easily produced by mechanical exfoliation of natural graphite using a three-roll mill","authors":"Junhao Wang , Hongsheng Lin , Jonathon D. Tanks , Yoshihiko Arao","doi":"10.1016/j.jcomc.2025.100580","DOIUrl":"10.1016/j.jcomc.2025.100580","url":null,"abstract":"<div><div>With the rapid development of the electronics industry, the demand for superior heat dissipation materials is increasing. Although many studies have been conducted on graphene films with high thermal conductivity, most of them are processed at high temperatures (∼3000 °C) using graphene oxide, which is environmentally harmful and consumes large amounts of energy. This paper reports a simple, low-cost, low-energy, high-efficiency method for the preparation of graphite films using only environmentally friendly materials. Composite films with a thermal conductivity of 298.5 Wm<sup>-1</sup>K<sup>-1</sup> were successfully produced by simply dispersing and exfoliating natural graphite and carboxymethylcellulose in a roll mill and depositing by blade coating. Conventional films fabricated using graphene nanoplates (GNP) exhibited a thermal conductivity of 94.6 Wm<sup>-1</sup>K<sup>-1</sup>, which is significantly lower than the graphite film produced by roll-milling. Experimental and theoretical investigations reveal the reason for this is that the mixed structure of large graphite and small graphite/GNP reduces the interfacial thermal resistance while forming a denser network of heat conduction paths.</div></div>","PeriodicalId":34525,"journal":{"name":"Composites Part C Open Access","volume":"17 ","pages":"Article 100580"},"PeriodicalIF":5.3,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143610167","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Impact of internal pressure control during manufacturing on residual stresses and safety performance of type 4 pressure vessels

IF 5.3

Composites Part C Open Access Pub Date : 2025-03-02 DOI: 10.1016/j.jcomc.2025.100581

Bartosz Popiela , Stephan Günzel , Marcus Schukar , Georg W. Mair , Katerina Krebber , Holger Seidlitz

引用次数: 0

Optimal selection of composite layup considering the fuselage crashworthiness

IF 5.3

Composites Part C Open Access Pub Date : 2025-03-01 DOI: 10.1016/j.jcomc.2025.100574

Dong Wang , Lin Chen , Shaohua Ji , Hua Cao , Meirong Xiong , Changchun Wang , Ju Qiu

{"title":"Optimal selection of composite layup considering the fuselage crashworthiness","authors":"Dong Wang , Lin Chen , Shaohua Ji , Hua Cao , Meirong Xiong , Changchun Wang , Ju Qiu","doi":"10.1016/j.jcomc.2025.100574","DOIUrl":"10.1016/j.jcomc.2025.100574","url":null,"abstract":"<div><div>This paper will introduce four main sections of content. Firstly, starting from the crashworthiness simulation analysis and test of simple columns, this paper examines the convergence of dynamic simulation models and the rationality of the selection of dynamic parameters. Secondly, after the multi-objective optimization analysis of the fuselage skin layer model, the optimal selection of skin layers is carried out. Under the condition of meeting the static working condition requirements, the Double-double (DD) layer has better dynamic characteristics and lighter mass. Thirdly, the verification of the crashworthiness analysis of the middle fuselage shows that the DD layer still has better dynamic characteristics, lighter mass, and better stability under the condition of meeting the static working condition requirements. Fourthly, by analyzing the constitutive relationship of the fuselage skin and programming analysis, the composite skin with the same quality has a higher bending-torsion stiffness and bending-torsion coupling stiffness with DD layers.</div></div>","PeriodicalId":34525,"journal":{"name":"Composites Part C Open Access","volume":"16 ","pages":"Article 100574"},"PeriodicalIF":5.3,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143527313","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Planar fibre winding for topological optimized composite structures

IF 5.3

Composites Part C Open Access Pub Date : 2025-03-01 DOI: 10.1016/j.jcomc.2024.100545

O. Döbrich, S. Steiner, P. Böhler, R. Radis

{"title":"Planar fibre winding for topological optimized composite structures","authors":"O. Döbrich, S. Steiner, P. Böhler, R. Radis","doi":"10.1016/j.jcomc.2024.100545","DOIUrl":"10.1016/j.jcomc.2024.100545","url":null,"abstract":"<div><div>Conventional manufacturing techniques for composites are constrained by the shell design realized from laminated materials. The layer-wise architecture limits their use in complex 3D geometries and leads to uneven structural performance in multi-axial load scenarios. This study introduces a novel planar fibre-winding process for manufacturing topologically optimized composite structures. The proposed method utilizes a continuous process where a carbon fibre roving is wound onto a complex 3D printed winding core. This approach enables the creation of a truss-like structure that closely follows the optimal load paths. The winding process is automated using a 3-axis gantry system, allowing precise fibre placement to form spatially complex structures. The mechanical performance of a complex wound structures was evaluated against traditionally milled aluminium parts. Tensile testing of dry rovings and composite samples provide insights into the effects of process-induced damage on the mechanical performance of the composites. Significant performance improvements compared to conventional metal component design is achieved. The composite structures showed a 55 % reduction in weight compared to milled aluminium components, while achieving a 160 % increase in specific stiffness in out-of-plane bending tests. The process also demonstrates high reproducibility and minimized material waste. The advanced fibre-winding process offers a promising composite manufacturing technique.</div></div>","PeriodicalId":34525,"journal":{"name":"Composites Part C Open Access","volume":"16 ","pages":"Article 100545"},"PeriodicalIF":5.3,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143510808","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

High elastic modulus GFRP rebar: A guide to manufacture and design of the influencing parameters

IF 5.3

Composites Part C Open Access Pub Date : 2025-03-01 DOI: 10.1016/j.jcomc.2025.100576

Omar Alajarmeh , Allan Manalo , Dmitry Yatsenko

引用次数: 0

Comparative analysis of shear behavior in continuous low-strength RC beams strengthened with BFRP and CFRP: An experimental and numerical investigation

IF 5.3

Composites Part C Open Access Pub Date : 2025-03-01 DOI: 10.1016/j.jcomc.2025.100575

Mu'tasim Abdel-Jaber , Rawand Al-Nsour , Aseel Almahameed , Ahmed Ashteyat

{"title":"Comparative analysis of shear behavior in continuous low-strength RC beams strengthened with BFRP and CFRP: An experimental and numerical investigation","authors":"Mu'tasim Abdel-Jaber , Rawand Al-Nsour , Aseel Almahameed , Ahmed Ashteyat","doi":"10.1016/j.jcomc.2025.100575","DOIUrl":"10.1016/j.jcomc.2025.100575","url":null,"abstract":"<div><div>The integration of Basalt Fiber-Reinforced Polymer (BFRP) materials marks a significant advancement in sustainable construction. This study evaluates the impact of externally bonded BFRP and Carbon Fiber-Reinforced Polymer (CFRP) sheets and laminates on the shear strength of reinforced concrete (RC) beams with a compressive strength of 20 MPa. Seven full-scale, two-span RC beams, each four meters in length, were tested, with identical strengthening patterns applied to both BFRP and CFRP sheets to allow for a direct comparison. One beam served as a control sample to assess the effectiveness of the strengthening techniques. Results showed that CFRP improved the shear capacity of the beams by 38.3 % to 46.6 %, while BFRP provided an increase of 9.7 % to 32.5 %, demonstrating substantial gains in load-carrying capacity for both materials, though CFRP showed a higher performance boost while BFRP materials are an economical alternative for CFRP materials, and the most effective strengthening configuration for both fiber types is full side coverage, as it offers superior confinement of the concrete. These findings were well-aligned with Finite Element Modeling predictions and theoretical expectations, closely matching ACI 440.2R-08 guidelines.</div></div>","PeriodicalId":34525,"journal":{"name":"Composites Part C Open Access","volume":"16 ","pages":"Article 100575"},"PeriodicalIF":5.3,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143520750","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mechanical performance of aluminum/copper/aluminum nanocomposite at different temperatures using molecular dynamics simulation

IF 5.3

Composites Part C Open Access Pub Date : 2025-03-01 DOI: 10.1016/j.jcomc.2025.100572

Narinderjit Singh Sawaran Singh , Ali B.M. Ali , Shahram Babadoust , Rasha Abed Hussein , Soheil Salahshour , Sh. Baghaei , S. Mohammad Sajadi

{"title":"Mechanical performance of aluminum/copper/aluminum nanocomposite at different temperatures using molecular dynamics simulation","authors":"Narinderjit Singh Sawaran Singh , Ali B.M. Ali , Shahram Babadoust , Rasha Abed Hussein , Soheil Salahshour , Sh. Baghaei , S. Mohammad Sajadi","doi":"10.1016/j.jcomc.2025.100572","DOIUrl":"10.1016/j.jcomc.2025.100572","url":null,"abstract":"<div><div>With the expansion of science and technology, the application and importance of composites in various industries increased. Aluminum /copper metal layer composites are widely used for their fracture toughness, corrosion resistance, and high electrical conductivity. This research simulated an Aluminum /copper/Aluminum tri-layer nanocomposite to investigate the effects of different temperatures (T = 300, 350, 375, 400, 450, and 500 K) on its mechanical properties. The stress, strain rate, yield strength, and ultimate strength values were recorded. The results indicate that the physical stability of the sample remained unaffected as temperature increased, while the attraction force among different particles was observed. Furthermore, the simulation results suggest that the mechanical strength of aluminum/copper/aluminum tri-layer nanocomposite decreased with rising initial temperature in the computational box. Specifically, the ultimate strength and Young's modulus of nanocomposites reduced to 2.186 GPa and 12.727 GPa, respectively, at 500 K. Aluminum /copper/Aluminum tri-layer nanocomposite showed promising potential for real-world applications, particularly in sectors requiring materials with enhanced mechanical properties. It is expected that these composites will be utilized in advanced engineering fields, such as aerospace and automotive industries, where their high strength-to-weight ratio and thermal stability can significantly improve performance and efficiency.</div></div>","PeriodicalId":34525,"journal":{"name":"Composites Part C Open Access","volume":"16 ","pages":"Article 100572"},"PeriodicalIF":5.3,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143510210","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Bioinspired composite structures: A comprehensive review of natural materials, fabrication methods, and engineering applications

IF 5.3

Composites Part C Open Access Pub Date : 2025-02-27 DOI: 10.1016/j.jcomc.2025.100578

M A Shadab Siddiqui , M S Rabbi , Radif Uddin Ahmed , Fahad Alam , M A M Hossain , Shamim Ahsan , Nur Mohammad Miah

{"title":"Bioinspired composite structures: A comprehensive review of natural materials, fabrication methods, and engineering applications","authors":"M A Shadab Siddiqui , M S Rabbi , Radif Uddin Ahmed , Fahad Alam , M A M Hossain , Shamim Ahsan , Nur Mohammad Miah","doi":"10.1016/j.jcomc.2025.100578","DOIUrl":"10.1016/j.jcomc.2025.100578","url":null,"abstract":"<div><div>Biomimetic materials have emerged as a promising alternative to synthetic materials due to their potential to mimic biological architecture across multiple scales, from nanofibrous architectures to macroscopic gradients. Natural materials, such as bone, wood, spider silk, and mollusk shells, have remarkable mechanical properties owing to their complex hierarchical structure. They process a unique combination of organic and inorganic components. Inspired by these biological composites, advanced synthetic materials with improved strength, toughness, and functionality have been developed. This review highlights the multifaceted approaches to creating scaffolds that mimic extracellular matrix (ECM) and tissue hierarchies across multiple length scales. Among these, nacre, mollusk shells, and eggshells exhibit remarkable versatility in their adaptation to various fabrication methods, suggesting their promising role in future biomimicry. Also, various fabrication techniques for biomimetic composite scaffolds are explored, including 3D printing, electrospinning, and self-assembly methods. The strong focus on biomedical applications highlights the natural synergy between bioinspired materials and medical innovations, particularly in tissue engineering and regenerative medicine. This overview of current strategies and future directions in the field will be of interest to researchers in materials science, tissue engineering, as well as biomedicine. The paper presents the possibility of biomimetic composites changing the way many applications, from biomedical implants to sustainable engineering solutions.</div></div>","PeriodicalId":34525,"journal":{"name":"Composites Part C Open Access","volume":"17 ","pages":"Article 100578"},"PeriodicalIF":5.3,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143629535","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0