Composite Structures最新文献

High-sensitivity rGO/epoxy strain sensor integrated into CFRP composite structures

IF 6.3 2区材料科学

Composite Structures Pub Date : 2025-03-30 DOI: 10.1016/j.compstruct.2025.119159

Shengjie Wang , Wenhao Zhao , Binghao Lang , Yana Wang , Yifeng Dong , Qiqige Wuyun , Hongshuai Lei , Xuefeng Yao , Heng Yang

{"title":"High-sensitivity rGO/epoxy strain sensor integrated into CFRP composite structures","authors":"Shengjie Wang , Wenhao Zhao , Binghao Lang , Yana Wang , Yifeng Dong , Qiqige Wuyun , Hongshuai Lei , Xuefeng Yao , Heng Yang","doi":"10.1016/j.compstruct.2025.119159","DOIUrl":"10.1016/j.compstruct.2025.119159","url":null,"abstract":"<div><div>Carbon fiber-reinforced polymer (CFRP) composites are widely used in aerospace and automotive industries for their superior mechanical properties and lightweight characteristics. However, their complex behavior challenges structural safety, requiring effective online monitoring. Existing sensors lack sufficient sensitivity to detect minor damage, while embedded sensors may compromise the mechanical properties of CFRP, impairing long-term strain monitoring. This study proposes a reduced graphene oxide (rGO)/epoxy strain sensor based on a pre-strain strategy, which achieves anisotropic regulation through the directional alignment of microstructures and effectively preserves both the pre-strained configuration and aligned microstructure using transfer printing technology. The sensor demonstrates a gauge factor of 80.07 under 25 % pre-strain, representing a 9.43-fold enhancement compared to sensors without pre-strain. The underlying mechanism of sensitivity enhancement was revealed using a tunneling theory model. During cyclic tensile testing, the sensor demonstrated excellent stability and repeatability, underscoring its potential for real-time structural health monitoring of CFRP composites. The simulation results demonstrate that when the thickness of the embedded sensor is 20 μm, the maximum relative strain error induced is only 1.220 %, indicating that reducing the sensor thickness is a critical approach to minimizing interference with the strain field of the composite material and preserving its mechanical properties.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"363 ","pages":"Article 119159"},"PeriodicalIF":6.3,"publicationDate":"2025-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143759537","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}

引用次数: 0

Multiscale stochastic fatigue analysis of CFRP laminate composites with Bayesian calibration-based characterization method

IF 6.3 2区材料科学

Composite Structures Pub Date : 2025-03-29 DOI: 10.1016/j.compstruct.2025.119139

Hoil Choi , Hyoung Jun Lim , Dongwon Ha , Jeong Hwan Kim , Gun Jin Yun

{"title":"Multiscale stochastic fatigue analysis of CFRP laminate composites with Bayesian calibration-based characterization method","authors":"Hoil Choi , Hyoung Jun Lim , Dongwon Ha , Jeong Hwan Kim , Gun Jin Yun","doi":"10.1016/j.compstruct.2025.119139","DOIUrl":"10.1016/j.compstruct.2025.119139","url":null,"abstract":"<div><div>This paper establishes a novel multiscale stochastic fatigue analysis framework to predict the uncertainty characteristics observed in the fatigue experiments of carbon fiber reinforced polymer (CFRP) laminate composites. A Bayesian calibration-based characterization method derives fatigue parameter distributions for constituent level (fiber, matrix, interface) from lamina fatigue experimental results. With multiscale fatigue analysis framework, a micromechanics theory-based constitutive model is defined to calculate the fatigue damage at the constituent level, and the degradation effects due to fatigue damage are reflected during the finite element (FE) analysis. Additionally, the uncertainty of material properties present in the specimens is captured using the Karhunen-Loève (KL) expansion method, a spectral stochastic finite element method (SSFEM). As a result of multiscale stochastic fatigue analysis, a distribution of fatigue life and fatigue failure mechanisms can be predicted. Considering the stochastic properties observed in experimental results, it can be confirmed that the developed method accurately reflects the realistic fatigue behavior of CFRP laminate composites.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"363 ","pages":"Article 119139"},"PeriodicalIF":6.3,"publicationDate":"2025-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143747903","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}

引用次数: 0

Layup angle effects on the damage and fracture behaviour of fibre composite foldcore sandwich structures under impacts

IF 6.3 2区材料科学

Composite Structures Pub Date : 2025-03-28 DOI: 10.1016/j.compstruct.2025.119146

Zhang Nana , Guo Xiaoming , Wang Hao , K.M. Liew

{"title":"Layup angle effects on the damage and fracture behaviour of fibre composite foldcore sandwich structures under impacts","authors":"Zhang Nana , Guo Xiaoming , Wang Hao , K.M. Liew","doi":"10.1016/j.compstruct.2025.119146","DOIUrl":"10.1016/j.compstruct.2025.119146","url":null,"abstract":"<div><div>The S-shaped foldcore structure, an evolution of the V-shaped foldcore, offers enhanced energy absorption and impact resistance. Due to the complexity of the foldcore and the strong anisotropy of the fiber material, the fiber laying angle significantly influences the foldcore’s performance. This study investigates the effect of the fiber lay-up angle on the S-shaped foldcore’s anisotropy by fabricating foldcore sandwich composite panels using hot compression molding. Panels were laid along the in-face folding direction, the out-face folding direction, and cross-laid in both directions. A low-speed impact method was used to observe and analyze the damage to the foldcore structure. The impact process was also simulated using the finite element method combined with the Hashin’s criterion as a means of identification of material failure initiation to analyze the damage and fracture process. Results showed that the composite foldcore sandwich panel laid along the in-face folding direction exhibited the strongest impact resistance. Panels laid in the in-face folding direction were more prone to fracture due to higher damage levels, while those with fibers in the out-face folding direction were more susceptible to fiber tensile damage, causing more fracture in rear panel.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"363 ","pages":"Article 119146"},"PeriodicalIF":6.3,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143759534","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}

引用次数: 0

Metallic plate-lattice and epoxy interpenetrating phase composites for superior behavioral characteristics

IF 6.3 2区材料科学

Composite Structures Pub Date : 2025-03-28 DOI: 10.1016/j.compstruct.2025.119122

Tianpeng Zhang , Xiaofei Cao , Hu Niu , Xiao Du , Yiting Guan , Chunwang He , Haoming Yang , Ruoman Zhu , Ying Li

{"title":"Metallic plate-lattice and epoxy interpenetrating phase composites for superior behavioral characteristics","authors":"Tianpeng Zhang , Xiaofei Cao , Hu Niu , Xiao Du , Yiting Guan , Chunwang He , Haoming Yang , Ruoman Zhu , Ying Li","doi":"10.1016/j.compstruct.2025.119122","DOIUrl":"10.1016/j.compstruct.2025.119122","url":null,"abstract":"<div><div>Metallic plate lattices are prone to localized buckling under external compressive loads, leading to a progressive instability of the entire structure, which remarkably limits the mechanical performance and promising application of plate lattices. To address this, we propose a novel design strategy that combines 3D printing and resin infiltration methods to construct the plate lattice-epoxy resin interpenetrating phase composite (FCC-IPCs). Quasi-static and dynamic mechanical properties and deformation modes of FCC-IPCs are investigated through simulations and experimental methods. By implementing this design strategy, deformation mode has successfully transformed from progressive instability to overall shear failure, where significant improvement in mechanical properties can be harvested. Under quasi-static loading, 36.1%, 70.6%, and 75.7% increases can be seen in specific peak stress, specific plateau stress and specific energy absorption of the FCC1-IPCs specimen, respectively. Under dynamic loading, specific plateau stress and specific energy absorption can increase by 100.7 % and 101 %, respectively. Furthermore, this design strategy is not sensitive to manufacturing defects or holes, exhibiting good robustness and applicability in aerospace and automotive engineering.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"363 ","pages":"Article 119122"},"PeriodicalIF":6.3,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143738013","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}

引用次数: 0

Co-enhancement of mechanical and vibrational isolation properties for composite meta-materials

IF 6.3 2区材料科学

Composite Structures Pub Date : 2025-03-28 DOI: 10.1016/j.compstruct.2025.119136

Jiawang Yong , Yiyao Dong , Wanting Li , Yanyan Chen , Zhiwen Ren , Zhishuai Wan , Daining Fang

引用次数: 0

Multi-scale prediction method for ice impact resistance of 3D braided composites based on surface-inner cell model

IF 6.3 2区材料科学

Composite Structures Pub Date : 2025-03-28 DOI: 10.1016/j.compstruct.2025.119142

Feng Jin , Zihao Zhao , Lulu Liu , Xinying Zhu , Wei Chen , Gang Luo

引用次数: 0

A novel surrogate modeling strategy for the mechanical performance of CFRP/Al multi-riveted-bonded joints based on an innovative sampling scheme

IF 6.3 2区材料科学

Composite Structures Pub Date : 2025-03-28 DOI: 10.1016/j.compstruct.2025.119140

Yacong Zhang , Hanyu Zhang , Zhao Liu , Ping Zhu

{"title":"A novel surrogate modeling strategy for the mechanical performance of CFRP/Al multi-riveted-bonded joints based on an innovative sampling scheme","authors":"Yacong Zhang , Hanyu Zhang , Zhao Liu , Ping Zhu","doi":"10.1016/j.compstruct.2025.119140","DOIUrl":"10.1016/j.compstruct.2025.119140","url":null,"abstract":"<div><div>The multi-riveted-bonded joint combines mechanical fastening and adhesive bonding to offer superior static and fatigue performance, and is widely used in industrial applications. However, its numerous design parameters and their strong interdependencies make it difficult to establish an accurate surrogate model for mechanical performance. This study focuses on carbon fiber reinforced polymer/aluminum alloy (CFRP/Al) multi-riveted-bonded joints and introduces an innovative sampling scheme, the chessboard combination sampling (CCS). This approach resolves the parameter coupling problem and unifies the dimensions of input variables for the surrogate model. An automated parametric modeling process was then used to obtain finite element analysis data and construct a database for training the Kriging model. The surrogate model’s input includes global geometric variables such as overlap area, rivet count, size, position, and material thickness, while the output predicts the joint’s stiffness and strength with over 93 % accuracy. Finally, a comprehensive sensitivity analysis is conducted using the established surrogate model and database to assess the impact of design parameters on the structure’s stiffness and strength. The surrogate model enhances the efficiency of predicting mechanical performance for multi-riveted-bonded joints and provides a robust methodology for the analysis and design of similar structures in engineering applications.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"363 ","pages":"Article 119140"},"PeriodicalIF":6.3,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143759536","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}

引用次数: 0

Novel insight into relationship between microstructure and ablation behavior of Cu-W alloys prepared by melt infiltration: Experiments and molecular dynamics

IF 6.3 2区材料科学

Composite Structures Pub Date : 2025-03-28 DOI: 10.1016/j.compstruct.2025.119126

Bowen Dong , Zhaorun Li , Zhenpeng Wu , Ziyue Zhou , Shichao Liu , Weilong Zhao , Chengrong Mao , Lingyu Li , Jiaming Liu , Jinchuan Jie

{"title":"Novel insight into relationship between microstructure and ablation behavior of Cu-W alloys prepared by melt infiltration: Experiments and molecular dynamics","authors":"Bowen Dong , Zhaorun Li , Zhenpeng Wu , Ziyue Zhou , Shichao Liu , Weilong Zhao , Chengrong Mao , Lingyu Li , Jiaming Liu , Jinchuan Jie","doi":"10.1016/j.compstruct.2025.119126","DOIUrl":"10.1016/j.compstruct.2025.119126","url":null,"abstract":"<div><div>This study proposes a novel approach combining MD simulations and experimental methods to investigate the relationship between microstructure and ablation behavior of Cu-W alloys with varying W content, prepared by the melt infiltration method. Cu-W alloys have attracted significant interest due to their unique combination of high thermal and electrical conductivity from Cu and excellent thermal stability and ablation resistance from W, making them suitable for high-temperature applications. However, understanding the influence of microstructure, particularly W content, on their ablation resistance remains challenging, especially under extreme conditions like laser ablation. The experimental results show that increasing W content enhances the ablation resistance, as evidenced by the smallest ablation craters in W90. MD simulations further reveal how heat predominantly diffuses through Cu regions, while W serves as a thermal barrier, thereby enhancing stability during ablation. Additionally, mean squared displacement analysis indicates that atomic mobility decreases with higher W content, suggesting greater structural rigidity in W-rich alloys. This MD-based approach successfully captures the rapid phase transformations and kinetic mechanisms of Cu-W alloys under extreme conditions, providing insights that bridge the scale gap in experimental observations. The results contribute valuable theoretical support for optimizing the design and ablation resistance of Cu-W alloys.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"363 ","pages":"Article 119126"},"PeriodicalIF":6.3,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143738009","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}

引用次数: 0

Flexural frequency analysis of damaged beams using mixture unified gradient elasticity theory

IF 6.3 2区材料科学

Composite Structures Pub Date : 2025-03-27 DOI: 10.1016/j.compstruct.2025.119143

Hossein Darban , S. Ali Faghidian

{"title":"Flexural frequency analysis of damaged beams using mixture unified gradient elasticity theory","authors":"Hossein Darban , S. Ali Faghidian","doi":"10.1016/j.compstruct.2025.119143","DOIUrl":"10.1016/j.compstruct.2025.119143","url":null,"abstract":"<div><div>The flexural vibration of miniaturized homogeneous isotropic beams with multiple cracks is investigated using the mixture unified gradient elasticity theory. The model captures both possible stiffening and softening size-dependence at small scales. The problem is addressed using the Bernoulli-Euler beam theory, with the domain partitioned into distinct sections at cracked cross-sections. Cracks are assumed to be non-propagating, sufficiently spaced to avoid interaction, and open during vibration. The elastic spring model is employed to capture the effect of cracks on the dynamic characteristics. The time-dependent variational functional is rigorously established to derive variationally consistent and extra non-standard boundary and continuity conditions. Natural frequencies are obtained by solving the eigenvalue problem resulting from the imposition of boundary and continuity conditions. The predictions demonstrate excellent agreement with experimental, molecular dynamics, and analytical data from the literature for both large- and small-scale beams. The model is applied to examine the effects of gradient characteristic parameters, crack length and location, and boundary conditions on the frequencies. The practical application of the model to the inverse problem, where the location and length of a crack are unknown a priori, is numerically analyzed. The results indicate that the size effect significantly influences the inverse problem solution.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"363 ","pages":"Article 119143"},"PeriodicalIF":6.3,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143747904","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}

引用次数: 0

Design of thermal meta-structures made of functionally graded materials using isogeometric density-based topology optimization

IF 6.3 2区材料科学

Composite Structures Pub Date : 2025-03-27 DOI: 10.1016/j.compstruct.2025.119114

Chintan Jansari , Stéphane P.A. Bordas , Marco Montemurro , Elena Atroshchenko

{"title":"Design of thermal meta-structures made of functionally graded materials using isogeometric density-based topology optimization","authors":"Chintan Jansari , Stéphane P.A. Bordas , Marco Montemurro , Elena Atroshchenko","doi":"10.1016/j.compstruct.2025.119114","DOIUrl":"10.1016/j.compstruct.2025.119114","url":null,"abstract":"<div><div>The thermal conductivity of Functionally Graded Materials (FGMs) can be efficiently designed through topology optimization to obtain thermal meta-structures that actively steer the heat flow. Compared to conventional analytical design methods, topology optimization allows handling arbitrary geometries, boundary conditions and design requirements; and producing alternate designs for non-unique problems. Additionally, as far as the design of meta-structures is concerned, topology optimization does not need intuition-based coordinate transformation or the form invariance of governing equations, as in the case of transformation thermotics. We explore isogeometric density-based topology optimization in the continuous setting, which perfectly aligns with FGMs. In this formulation, the density field, geometry and solution of the governing equations are parameterized using non-uniform rational basis spline entities. Accordingly, the heat conduction problem is solved using Isogeometric Analysis. We design various 2D & 3D thermal meta-structures under different design scenarios to showcase the effectiveness and versatility of our approach. We also design thermal meta-structures based on architected cellular materials, a special class of FGMs, using their empirical material laws calculated via numerical homogenization.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"364 ","pages":"Article 119114"},"PeriodicalIF":6.3,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143760862","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}

引用次数: 0