Composite Structures最新文献_第4页

Impact resistance for ECC-RC bridge columns protected by an innovative steel-GFRP-foam anti-collision device: Experimental, numerical and theoretical analysis 新型钢- gfrp -泡沫防撞装置保护ec - rc桥柱的抗冲击性：实验、数值和理论分析

IF 7.1 2区材料科学

Composite Structures Pub Date : 2025-09-19 DOI: 10.1016/j.compstruct.2025.119667

Yi Cheng , Wenwei Wang , Zhongfeng Zhu , Yifeng Zhong , Yixing Tang

{"title":"Impact resistance for ECC-RC bridge columns protected by an innovative steel-GFRP-foam anti-collision device: Experimental, numerical and theoretical analysis","authors":"Yi Cheng , Wenwei Wang , Zhongfeng Zhu , Yifeng Zhong , Yixing Tang","doi":"10.1016/j.compstruct.2025.119667","DOIUrl":"10.1016/j.compstruct.2025.119667","url":null,"abstract":"<div><div>Considering satisfying the crashworthy demands for engineered cementitious composite (ECC)-reinforced concrete (RC) columns in bridge protection engineering, an innovative steel-glass fiber reinforced polymer (GFRP)-foam anti-collision device was proposed. Low-velocity collision experiments were taken to clarify the impact resistance for ECC-RC columns with the developed protective structure. Based on a calibrated numerical model, three important parameters were adopted to compare their effects on the specimen impact behaviors. An improved theoretical model considering the ECC fracture failure was derived to predict the initial energy consumption of composite columns with a steel-GFRP-foam device. Test results demonstrated that both the damage mode and collision responses for ECC-RC columns were extremely attenuated through the steel plastic yielding, GFRP buckling deformation and foam compressive-shear failure in this anti-collision device. Meanwhile, the stronger local stiffness of ECC strengthening composites was less conducive to a reasonable crashworthy design compared with the steel-GFRP-foam anti-collision structure. Simulation results indicated that the development of overall impact responses was mainly affected by the ECC-RC interface localization. Analytical results illustrated that the modified theoretical model was expected to be applied in the crashworthy design codes for strengthened bridge structures. These works provided some novel research ideas for the bridge anti-collision field.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"373 ","pages":"Article 119667"},"PeriodicalIF":7.1,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145118110","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

Experimental study on the biaxial compressive behaviour of anisotropic Octet lattices caused by fused deposition modelling 熔融沉积模型引起各向异性八元晶格双轴压缩特性的实验研究

IF 7.1 2区材料科学

Composite Structures Pub Date : 2025-09-19 DOI: 10.1016/j.compstruct.2025.119665

Zhengping Sun , Tuan Hua , Junjie Zhang , Yuxuan Zheng , Yingqian Fu

{"title":"Experimental study on the biaxial compressive behaviour of anisotropic Octet lattices caused by fused deposition modelling","authors":"Zhengping Sun , Tuan Hua , Junjie Zhang , Yuxuan Zheng , Yingqian Fu","doi":"10.1016/j.compstruct.2025.119665","DOIUrl":"10.1016/j.compstruct.2025.119665","url":null,"abstract":"<div><div>The fabrication flexibility of increasingly mature additive manufacturing techniques makes it possible to formulate and characterise novel lattice designs for improved energy absorption capabilities. However, the mechanical properties and energy absorption characteristics of most lattices are examined by uniaxial compression tests along their vertical build directions, which cannot approximate the complex loading conditions experienced in practical applications. Therefore, experimental examination on biaxial properties of lattices is essential to facilitate designing novel lattices with preferred performance for real protective applications. Moreover, the angle-dependent strut material properties induced by additive manufacturing result in anisotropic compressive responses for cubic-symmetric strut-based lattices. Thus, loading directions also need to be considered when examining the multiaxial properties of lattices. In this study, a homemade biaxial testing machine equipped with custom fixtures was employed to prescribe uniaxial compression, constrained uniaxial compression with lateral expansion prevented, and biaxial compression to the Octet lattice. Considering the anisotropy of the Octet fabricated via the fused deposition modelling with polylactic acid filaments, seven test scenarios were investigated in this work. Different stress–strain responses and crushing patterns are observed for various loading scenarios, implying the changed responses under complex loading conditions compared to those obtained by traditional uniaxial tests. The experimental works provide insights into designing and optimising lattices applicable to absorbing energy in engineering.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"373 ","pages":"Article 119665"},"PeriodicalIF":7.1,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145105811","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

Crack initiation, propagation and strain mapping during composite bending using digital image correlation and theoretical calculations 基于数字图像相关和理论计算的复合材料弯曲裂纹萌生、扩展和应变映射

IF 7.1 2区材料科学

Composite Structures Pub Date : 2025-09-18 DOI: 10.1016/j.compstruct.2025.119680

Karolina Głowacka , Tadeusz Smolnicki

{"title":"Crack initiation, propagation and strain mapping during composite bending using digital image correlation and theoretical calculations","authors":"Karolina Głowacka , Tadeusz Smolnicki","doi":"10.1016/j.compstruct.2025.119680","DOIUrl":"10.1016/j.compstruct.2025.119680","url":null,"abstract":"<div><div>The study focuses on analyzing strains and stresses in bent specimens of various dimensions. Depending on the maximum normal to shear stress ratio during bending, two failure modes can occur: translaminar and interlaminar. A higher value of this ratio increases the likelihood of translaminar failure. The research demonstrates that the critical value for polypropylene reinforced with unidirectional continuous glass fibers is 24. In this case, specimens exhibited both translaminar and interlaminar failure modes. The study also examined the specimens’ appearance at different stages of the bending test, as well as their microstructure after failure. Digital image correlation (DIC) was employed, enabling the determination of strain values for individual specimens and the comparison of theoretical values with those obtained experimentally via DIC. It was found that while the linear strain along the fibers and the shear strain were consistent, the actual strain across the specimen’s height was significantly higher than the theoretically calculated value. This discrepancy is likely due to the occurrence of additional stresses within the specimen, particularly associated with Hertzian contact phenomena, which caused localized compression and further influenced the strain distribution.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"373 ","pages":"Article 119680"},"PeriodicalIF":7.1,"publicationDate":"2025-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145118106","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

Nonlinear mechanical behavior and multi-field coupling characteristics in polymer-based multiferroic composites under combined tension and bending 聚合物基多铁复合材料在拉伸和弯曲联合作用下的非线性力学行为和多场耦合特性

IF 7.1 2区材料科学

Composite Structures Pub Date : 2025-09-18 DOI: 10.1016/j.compstruct.2025.119653

Jinye Luo , Juanjuan Zhang , Pengcheng Li , Xiaodong Xia , Han Du , George J. Weng

{"title":"Nonlinear mechanical behavior and multi-field coupling characteristics in polymer-based multiferroic composites under combined tension and bending","authors":"Jinye Luo , Juanjuan Zhang , Pengcheng Li , Xiaodong Xia , Han Du , George J. Weng","doi":"10.1016/j.compstruct.2025.119653","DOIUrl":"10.1016/j.compstruct.2025.119653","url":null,"abstract":"<div><div>Polymer-based multiferroic composites simultaneously exhibit ferroelasticity, ferroelectricity, and ferromagnetism, supporting applications in flexible electronics, biomimetics, and biomedicine. Their macroscopic properties are influenced by averaging, synergy, antagonism, and product interactions. This study investigates these behaviors by incorporating nonlinear hysteresis, interface polarization, and leakage effects, integrating a crystal phase transformation model with two-step homogenization theory. A theoretical framework is developed to analyze nonlinear mechanical responses and magnetoelectric (ME) effects under combined tension and bending, based on Kirchhoff thin plate theory and tension-bending control equations. Analytical expressions are derived for natural frequencies, vibration modes, displacements, and ME coefficients. Results reveal that increasing ferromagnetic particle content enhances ferromagnetism but causes dielectric relaxation, percolation, and leakage, reducing piezoelectricity. Moderate content promotes <em>β</em>-phase formation, enhancing piezoelectric performance. The composite shows multiple natural frequencies, with resonance at specific ones. The ME properties exhibit hysteresis, significantly amplified under combined deformation. Theoretical predictions of magnetization, polarization, piezoelectric coefficient, leakage current, and ME coefficient closely match experimental results, validating the model’s accuracy and applicability. To address leakage at high particle fractions, two strategies are proposed. Under optimal conditions, the ME coefficient improves by 2.4 times, establishing a solid basis for the design and optimization of polymer-based multiferroic composites.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"373 ","pages":"Article 119653"},"PeriodicalIF":7.1,"publicationDate":"2025-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145155291","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

Systematic numerical design of a supported FCC plate lattice with structural reinforcement and gradation for energy absorption 具有结构增强和能量吸收梯度的FCC支撑板晶格的系统数值设计

IF 7.1 2区材料科学

Composite Structures Pub Date : 2025-09-18 DOI: 10.1016/j.compstruct.2025.119677

Mohamed Abdelmageed , Ibrahim H. ZainElabdeen , Kamran A. Khan , Wael Zaki , Wesley Cantwell

{"title":"Systematic numerical design of a supported FCC plate lattice with structural reinforcement and gradation for energy absorption","authors":"Mohamed Abdelmageed , Ibrahim H. ZainElabdeen , Kamran A. Khan , Wael Zaki , Wesley Cantwell","doi":"10.1016/j.compstruct.2025.119677","DOIUrl":"10.1016/j.compstruct.2025.119677","url":null,"abstract":"<div><div>In structural engineering and protective applications, efficient energy-absorbing materials are essential. Additively manufactured plate lattices are promising due to their high stiffness-to-density ratio. This study presents a numerical analysis of three basic plate lattices, simple cubic (SC), body-centered cubic (BCC), and face-centered cubic (FCC), under large-strain quasi-static compression. The effects of unit cell count, relative density, and axial grading on energy absorption and stability are investigated. Hybrid structures combining two or three lattice types are also studied across various component ratios. Based on the findings, a new design combining FCC with vertical supports is proposed. Numerical results are validated through experiments on FCC, BCC, and the binary-hybrid FCC + BCC lattices, showing good agreement in force response and deformation patterns. The SC structure achieves the highest specific energy absorption (SEA) but suffers from poor stability due to vertical walls, while the FCC offers the best stability. Integrating 70 % SC into FCC or BCC enhances SEA but reduces structural stability. The proposed hybrid structure outperforms all others, achieving 30 % higher SEA than FCC alone while maintaining stable deformation. Axial grading further boosts SEA by 11.6 %. This work demonstrates a pathway to optimizing both energy absorption and mechanical stability in lattice-based materials.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"373 ","pages":"Article 119677"},"PeriodicalIF":7.1,"publicationDate":"2025-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145155289","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

Multilevel homogenization framework for equivalent elastic properties of TSV heterostructures: integrating theoretical modeling and micromechanical FEM TSV异质结构等效弹性特性的多级均匀化框架：理论建模与微力学有限元的集成

IF 7.1 2区材料科学

Composite Structures Pub Date : 2025-09-17 DOI: 10.1016/j.compstruct.2025.119669

Jian Liu , Xiaojing Zheng , Qingya Li

{"title":"Multilevel homogenization framework for equivalent elastic properties of TSV heterostructures: integrating theoretical modeling and micromechanical FEM","authors":"Jian Liu , Xiaojing Zheng , Qingya Li","doi":"10.1016/j.compstruct.2025.119669","DOIUrl":"10.1016/j.compstruct.2025.119669","url":null,"abstract":"<div><div>This study presents a hetero-structured interposer incorporating complete Through-Silicon Vias (TSVs) with functional barriers and insulating layers. A multiscale homogenization framework is developed to characterize the mechanical behavior of TSV architectures, explicitly considering constitutive relationships among constituent materials to capture intrinsic heterogeneities affecting macroscale interposer performance. The proposed methodology combines elastic mechanics theory with micromechanical finite element analysis to calculate equivalent elastic constants and thermal expansion coefficients of TSV assemblies through a representative volume element model. Numerical validation demonstrates maximum discrepancies of 13.16% between theoretical predictions and finite element simulations when scaling TSV copper core diameters from 0.1 mm to 0.6 mm. Parametric analysis reveals significant orthotropic effects: modeling silicon as isotropic induces substantial errors (42.94%) in equivalent properties compared to orthotropic treatment, emphasizing the critical need to account for crystalline orientation in TSV mechanical analysis. The homogenization framework successfully predicts the bending deformation and free vibration responses of TSV-embedded interposers under clamped boundary conditions. Comparative assessments show excellent agreement between theoretical and numerical results, with displacement errors below 8% and natural frequency deviations within 5%, confirming the model’s accuracy in capturing global structural behavior. This methodology establishes a validated computational framework for TSV reliability assessment in 3D integrated circuits, achieving less than 15% prediction errors that meet industrial accuracy requirements. The demonstrated capability to resolve interfacial stress interactions while maintaining computational efficiency positions this approach as a critical tool for advanced packaging optimization.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"373 ","pages":"Article 119669"},"PeriodicalIF":7.1,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145155228","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

Multi-physics property evaluation and actuation response of first-order fractal-inspired photostrictive composites: a finite element analysis 一阶分形激发光致伸缩复合材料的多物理场性能评价与驱动响应：有限元分析

IF 7.1 2区材料科学

Composite Structures Pub Date : 2025-09-17 DOI: 10.1016/j.compstruct.2025.119671

Manish Kumar Sharma , Diwakar Singh , Reeta Chauhan , Rajeev Kumar , Vishal Singh Chauhan

{"title":"Multi-physics property evaluation and actuation response of first-order fractal-inspired photostrictive composites: a finite element analysis","authors":"Manish Kumar Sharma , Diwakar Singh , Reeta Chauhan , Rajeev Kumar , Vishal Singh Chauhan","doi":"10.1016/j.compstruct.2025.119671","DOIUrl":"10.1016/j.compstruct.2025.119671","url":null,"abstract":"<div><div>A photostrictive actuator helps the smart structure to be actuated wirelessly. Researchers are attempting to enhance its actuation response. This research article explores first-order fractal-inspired photostrictive 3–3 composites to enhance the actuation response of photostrictive actuators. The proposed structure has been considered and designed for enhanced multifunctional actuation. This configuration consists of piezoelectric PMN-35PT reinforcements and photovoltaic PTB7-Th as a matrix, enabling opto-electro-mechanical coupling. All effective material properties were evaluated using a representative volume element (RVE) approach for fiber aspect ratios (L/D = 2, 2.5, 3). Actuation performance was analyzed under 60 mW/cm<sup>2</sup> light irradiation using the finite element method. Maximum deflections for the cantilever beam decreased from −3.77 × 10<sup>−3</sup> m (L/D = 2) to −1.45 × 10<sup>−3</sup> m (L/D = 3), the simply supported beam 4.71 × 10<sup>−4</sup> m (L/D = 2) to 1.81 × 10<sup>−4</sup> m (L/D = 3), and clamped square plate shows 1.6 × 10<sup>−4</sup> m (L/D = 2) demonstrating the tunability of actuation response. To the best of our knowledge, this is the first demonstration of a photostrictive actuator based on a first-order fractal-inspired composites, modelled via fully-coupled multiphysics finite-element framework. This study highlights the potential of fractal-inspired photostrictive composites for applications in aerospace, robotics, and MEMS, where adaptive material performance is crucial.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"373 ","pages":"Article 119671"},"PeriodicalIF":7.1,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145105812","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

Behaviors and load distribution of sleeved bolted joints between pultruded FRP box profiles with multi-directional fiber layups 多方向纤维层拉挤玻璃钢箱型间套筒螺栓连接性能及荷载分布

IF 7.1 2区材料科学

Composite Structures Pub Date : 2025-09-17 DOI: 10.1016/j.compstruct.2025.119673

Mengdie Liang , Xin Wang , Xinyan Yuan , João R. Correia , Zhishen Wu

{"title":"Behaviors and load distribution of sleeved bolted joints between pultruded FRP box profiles with multi-directional fiber layups","authors":"Mengdie Liang , Xin Wang , Xinyan Yuan , João R. Correia , Zhishen Wu","doi":"10.1016/j.compstruct.2025.119673","DOIUrl":"10.1016/j.compstruct.2025.119673","url":null,"abstract":"<div><div>Pultruded fiber-reinforced polymer (PFRP) composites have recently garnered significant attention for truss structures. However, the low connection efficiency and inherent brittleness of traditional PFRP profiles, with mostly unidirectional (UD) reinforcement, pose critical challenges that limit their structural applications. This study presents experimental and numerical investigations about the tensile performance of bolted sleeved joints between PFRP box profiles with multi-directional (MD) fiber layups, aiming to explore effective strategies for enhancing joint connection efficiency. The studied parameters included bolt layout, fiber layup, end distance and bolt spacing. Results indicate that the incorporation of MD fiber layups can improve the joint strength of the bolted sleeved joints by 90 %. Moreover, arranging the bolts to pass through all four walls of the box profile mitigated the uneven load distribution among bolts, thereby improving connection efficiency without requiring additional bolts or increased connection length compared to joints where bolts were arranged passing only through two walls. Increasing bolt spacing proved more effective in enhancing ultimate load than adjusting end distance. For engineering applications, it is recommended that bolt spacing exceeds five times the bolt diameter in order to guarantee pin-bearing failure.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"373 ","pages":"Article 119673"},"PeriodicalIF":7.1,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145106445","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

Fine-scale model of concrete composite for long-term cycling transient loads incorporating nonlinear hardening and softening effects 考虑非线性硬化和软化效应的混凝土复合材料长期循环瞬态荷载的细尺度模型

IF 7.1 2区材料科学

Composite Structures Pub Date : 2025-09-17 DOI: 10.1016/j.compstruct.2025.119649

Himanshu Rana , Adnan Ibrahimbegovic

{"title":"Fine-scale model of concrete composite for long-term cycling transient loads incorporating nonlinear hardening and softening effects","authors":"Himanshu Rana , Adnan Ibrahimbegovic","doi":"10.1016/j.compstruct.2025.119649","DOIUrl":"10.1016/j.compstruct.2025.119649","url":null,"abstract":"<div><div>Concrete modeling under long-term cyclic transient loading has always been a challenging task due to the highly heterogeneous nature of the material. In this context, the present study proposes a fine-scale model of concrete by representing it as a two-phase material composed of aggregates and mortar. For this, the material domain is discretized into Voronoi cells connected by cohesive links using Delaunay triangulation, and an aggregate assignment algorithm is proposed to associate these links to either aggregates or mortar. Following this, the cohesive links representing mortar are modeled as 2D Timoshenko beam elements incorporating a distinct nonlinear kinematic hardening model along with isotropic softening model, separately in tension, compression, and shear. Softening in the material is introduced using the Embedded Discontinuity Finite Element Method (EDFEM) to model localized discontinuities. In contrast, the cohesive links associated with aggregates are modeled as elastic 2D Timoshenko beam elements. Lastly, compressive cyclic and three-point bending tests are performed on the concrete specimen, and the results are compared with experimental data reported in the literature, showing very good agreement with the experiments. Additionally, an active Bayesian Optimization (BO) procedure is performed to determine the optimal set of parameters for the three-point bending test by minimizing the Mean Squared Error (MSE) of energy between the present model and the experimental results.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"373 ","pages":"Article 119649"},"PeriodicalIF":7.1,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145106442","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

Effect of low strain rate on the strength of CFRP laminates after hygrothermal exposure in seawater 低应变率对CFRP复合材料在海水中湿热暴露后强度的影响

IF 7.1 2区材料科学

Composite Structures Pub Date : 2025-09-17 DOI: 10.1016/j.compstruct.2025.119663

Haiwei Zhan , Jiayu Wu , Jian-Fei Chen

{"title":"Effect of low strain rate on the strength of CFRP laminates after hygrothermal exposure in seawater","authors":"Haiwei Zhan , Jiayu Wu , Jian-Fei Chen","doi":"10.1016/j.compstruct.2025.119663","DOIUrl":"10.1016/j.compstruct.2025.119663","url":null,"abstract":"<div><div>This paper presents a study on the effect of strain rate on the strength of carbon fiber reinforced polymer (CFRP) laminates after hygrothermal exposure in seawater at 60 °C. A ten-month water absorption test was conducted on CFRP immersed in 60 °C seawater, and its non-Fickian moisture uptake behavior was accurately modeled using a Weibull relaxation model optimized by particle swarm optimization (PSO). Tensile tests were conducted on CFRP specimens subjected to varying seawater aging durations (0, 35, 70, and 105 days) at different strain rates (from 10<sup>−7</sup> to 10<sup>−3</sup> s<sup>−1</sup>). The experimental results indicate that the strength of CFRP increases with an increase in strain rate, regardless of whether the material has undergone seawater aging. It decreases with aging time until reaching water absorption saturation across all test strain rates, but increases slightly after saturation. A two-way analysis of variance (ANOVA) was innovatively applied to assess the interaction effects of strain rate and aging time on CFRP strength. The results confirmed that both factors are statistically independent, offering a novel and quantitative perspective on the mechanical-environmental coupling effects. Finally, an empirical model is developed to represent the strengths of CFRP at different strain rates following hygrothermal exposure.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"373 ","pages":"Article 119663"},"PeriodicalIF":7.1,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145155288","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