Composite Structures最新文献

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Additively manufactured plate lattice interpenetrating composites with high yield strength and energy absorbing capability 具有高屈服强度和能量吸收能力的叠加制造板格互穿复合材料
IF 6.3 2区 材料科学
Composite Structures Pub Date : 2024-11-17 DOI: 10.1016/j.compstruct.2024.118709
Xiaobo Wang , Bo Song , Hanxing Zhu , Zhi Zhang , Lei Zhang , Yusheng Shi
{"title":"Additively manufactured plate lattice interpenetrating composites with high yield strength and energy absorbing capability","authors":"Xiaobo Wang ,&nbsp;Bo Song ,&nbsp;Hanxing Zhu ,&nbsp;Zhi Zhang ,&nbsp;Lei Zhang ,&nbsp;Yusheng Shi","doi":"10.1016/j.compstruct.2024.118709","DOIUrl":"10.1016/j.compstruct.2024.118709","url":null,"abstract":"<div><div>Mechanical metamaterials with plate lattice architectures have been proven to possess specific stiffness and strength superior to that of traditional truss lattice structures. Current research mainly focuses on the mechanical properties of plate lattice skeletons, leaving interpenetrating composites with plate lattice architectures unexplored. In this work, plate lattice interpenetrating composites have been prepared by filling epoxy resin matrix to additively manufactured stainless steel plate lattice skeletons. By conducting uniaxial quasi-static compression tests and performing finite element analysis, mechanical performance and deformation patterns of plate lattice interpenetrating composites have been revealed. Results show that Young’s modulus and yield strength of plate lattice skeletons can be greatly enhanced by introducing an epoxy resin matrix to form interpenetrating composites. In addition, interpenetrating composites have been observed to deform stably without shear damage or fracture, facilitating the increase of energy-absorbing capability. Specific energy absorption of interpenetrating composites is up to three times higher than that of corresponding pure skeletons, which could extend the potentials of plate lattice metamaterials in energy-absorbing applications.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"353 ","pages":"Article 118709"},"PeriodicalIF":6.3,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142707184","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
Three-dimensional graded metamaterials with customizable thermal responses under space-variant temperature stimuli 在空间变温刺激下具有可定制热响应的三维梯度超材料
IF 6.3 2区 材料科学
Composite Structures Pub Date : 2024-11-16 DOI: 10.1016/j.compstruct.2024.118717
Kaiyu Wang , Zhengtong Han , Fan Lin , Xin-Lin Gao
{"title":"Three-dimensional graded metamaterials with customizable thermal responses under space-variant temperature stimuli","authors":"Kaiyu Wang ,&nbsp;Zhengtong Han ,&nbsp;Fan Lin ,&nbsp;Xin-Lin Gao","doi":"10.1016/j.compstruct.2024.118717","DOIUrl":"10.1016/j.compstruct.2024.118717","url":null,"abstract":"<div><div>Metamaterials with customizable thermal expansions are desirable for important engineering applications. However, existing metamaterials were designed by considering uniform temperature distributions. In the current study, a new design strategy is proposed to develop metamaterials with customizable thermal deformations under space-variant temperature (SVT) stimuli which are non-uniform. Three types of bi-material pyramidal units are first devised through using different material distributions and geometrical configurations. The coefficients of thermal expansion (CTEs) of these units are derived in closed-form expressions. Graded metamaterials are then constructed from the pyramidal units through combined periodic and graded tessellations. Based on targeted thermal deformations under prescribed stimuli, geometrical parameters are identified, and the thermal strains are determined using the newly derived analytical formulas and finite element simulations. The two sets of predictions are found to agree well, which indicates the effectiveness of the new design strategy for the graded metamaterials. The numerical results reveal that the graded metamaterials exhibit customizable uniform deformations under the SVT stimuli. In addition, targeted customizable thermal deformations with quadric-shape strain profiles are achieved in the graded metamaterials. Compared with the conventional design with uniform temperature distributions, the newly proposed design of metamaterials under non-uniform SVT stimuli is more versatile and flexible, thereby providing a systematic strategy for developing graded metamaterials.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"353 ","pages":"Article 118717"},"PeriodicalIF":6.3,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142707185","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
A transparent multifunctional integrated meta-window with excellent sound insulation and vibration reduction performance 具有出色隔音和减震性能的透明多功能一体化元窗
IF 6.3 2区 材料科学
Composite Structures Pub Date : 2024-11-16 DOI: 10.1016/j.compstruct.2024.118719
Zhengqing Tang, Xingzhong Wang, Shilin Li, Hongxing Li, Zicai Zhu, Fuyin Ma
{"title":"A transparent multifunctional integrated meta-window with excellent sound insulation and vibration reduction performance","authors":"Zhengqing Tang,&nbsp;Xingzhong Wang,&nbsp;Shilin Li,&nbsp;Hongxing Li,&nbsp;Zicai Zhu,&nbsp;Fuyin Ma","doi":"10.1016/j.compstruct.2024.118719","DOIUrl":"10.1016/j.compstruct.2024.118719","url":null,"abstract":"<div><div>As the speed of transportation vehicles such as high-speed train continues to increase, there has been a significant rise in both noise and vibration levels, substantially compromising passenger comfort and overall travel experience. In transportation vehicles, the necessity for transparency in windows poses a challenge in incorporating high sound-insulating or vibration-damping materials, rendering windows vulnerable in sound isolation and vibration attenuation. This study employs an integrated material-structural design concept to develop a multifunctional meta-window, which ensures optimal lighting transmission while achieving outstanding sound-insulating and vibration-damping capabilities. Two distinct structures, named ultra-lightweight thin plate-type metamaterial and high-stability thick plate-type metamaterial, are precisely designed to adapt to varied application scenarios. Utilizing a gradient parameter multi-cell parallel synergetic coupling design method broadens the working bandwidth for sound insulation. The meta-window incorporates localized resonance units, enabling acoustic and vibrational energy dissipation through low-frequency resonance, effectively enhancing the window’s sound-insulating and vibration-damping capabilities. Comprising a composite of various transparent materials, the design amalgamates sound insulation, vibration reduction, and light transmission, eliminating the need for opaque sound-insulating or damping materials. Consequently, it holds substantial potential for applications across sectors, including train, aircraft, and architectural domains.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"353 ","pages":"Article 118719"},"PeriodicalIF":6.3,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142707181","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
Non-dimensional linear analysis of one-dimensional wave propagation in tensegrity structures 张弦结构中一维波传播的非线性分析
IF 6.3 2区 材料科学
Composite Structures Pub Date : 2024-11-15 DOI: 10.1016/j.compstruct.2024.118694
R. Yazbeck , S. El-Borgi , J.G. Boyd , M. Chen , D.C. Lagoudas
{"title":"Non-dimensional linear analysis of one-dimensional wave propagation in tensegrity structures","authors":"R. Yazbeck ,&nbsp;S. El-Borgi ,&nbsp;J.G. Boyd ,&nbsp;M. Chen ,&nbsp;D.C. Lagoudas","doi":"10.1016/j.compstruct.2024.118694","DOIUrl":"10.1016/j.compstruct.2024.118694","url":null,"abstract":"<div><div>This study presents a methodology for analyzing wave propagation in tensegrity lattices within a non-dimensional framework. Two strategies are employed to predict pass bands and bandgaps. The first examines wave dispersion through a single representative unit cell, using dispersion curves to identify bandgaps and pass bands. The second models the structure as a finite system, using modal analysis to compute the steady-state response to harmonic loads and plot the frequency response function. Two unit cells are analyzed: a two-dimensional D-bar unit and a three-dimensional tensegrity prism. The study investigates axial and in-plane bending wave propagation in a D-bar chain and axial wave propagation in a prism chain. After non-dimensionalizing the equations of motion, key parameters such as ratios of stiffness per unit length, mass per unit length, and prestress are identified. Its is shown that varying these parameters shifts the bandgap locations and widths. Prestress has minimal effect in the D-bar case, while a slight shift in the first bandgap is observed in the prism. The predictions from unit cell and finite structure analyses show good agreement.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"353 ","pages":"Article 118694"},"PeriodicalIF":6.3,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142707369","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
Lightning damage analysis of composite bolted joint structures based on thermal-electrical-structural simulation 基于热-电-结构模拟的复合螺栓连接结构雷击损伤分析
IF 6.3 2区 材料科学
Composite Structures Pub Date : 2024-11-15 DOI: 10.1016/j.compstruct.2024.118720
Yuchen Zhu , Yuan Li , Jinru Sun , Chuang Liu , Xiangjie Xu , Kaifu Zhang , Hui Cheng
{"title":"Lightning damage analysis of composite bolted joint structures based on thermal-electrical-structural simulation","authors":"Yuchen Zhu ,&nbsp;Yuan Li ,&nbsp;Jinru Sun ,&nbsp;Chuang Liu ,&nbsp;Xiangjie Xu ,&nbsp;Kaifu Zhang ,&nbsp;Hui Cheng","doi":"10.1016/j.compstruct.2024.118720","DOIUrl":"10.1016/j.compstruct.2024.118720","url":null,"abstract":"<div><div>To analyze the impact of connection behavior on lightning-induced ablation damage in composite bolted joints, this paper analyzes contact properties based on thermoelectric characteristics and develops a lightning ablation damage model for composite interference joint structures. A preliminary analysis of the electrothermal conduction process in the interference-fit composite joints clarifies the influence of connection behavior on lightning damage. The results indicate that a skin effect occurs near the fastener-to-CFRP interface, and both Joule heating and conductive heat significantly affect the temperature distribution in the composite bolted joint structure. A lightning current impact test was also conducted for validation and comparison. Quantitative comparisons show that the predicted in-plane damage aligns well with the experimental results, with an error of 7.37%, while the difference in thickness direction damage is more significant, with an error of 40.02%. Furthermore, the analysis of ablation damage characteristics reveals that the most severe damage occurs in the lower-middle region of the CFRP thickness due to the combined effects of interference damage and bolt preload, while damage in other areas is suppressed.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"352 ","pages":"Article 118720"},"PeriodicalIF":6.3,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142701119","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
Bi-directional homogenization method for the design of multi-scale mechanical metamaterials 设计多尺度机械超材料的双向均质化方法
IF 6.3 2区 材料科学
Composite Structures Pub Date : 2024-11-15 DOI: 10.1016/j.compstruct.2024.118678
Senlin Huo , Bingxiao Du , Yong Zhao , Xiaoqian Chen
{"title":"Bi-directional homogenization method for the design of multi-scale mechanical metamaterials","authors":"Senlin Huo ,&nbsp;Bingxiao Du ,&nbsp;Yong Zhao ,&nbsp;Xiaoqian Chen","doi":"10.1016/j.compstruct.2024.118678","DOIUrl":"10.1016/j.compstruct.2024.118678","url":null,"abstract":"<div><div>Inverse Homogenization (IH) is a classical concept for the Topology Optimization (TO) of metamaterials. Traditional IH design methods are mainly the single-scale TO within a Representative Volume Element (RVE), suffering from challenges like design inefficiency and under-utilization of the design space. To address the problems, a Bi-Directional Homogenization (BDH) method based on the multi-scale TO principle is proposed for the design of mechanical metamaterials. The general design framework includes a forward homogenization process from the microscale to the mesoscale, and an inverse design process from the macroscale to the mesoscale. Firstly, at the microscale, the Graded Microstructures (GMs) are generated via a multi-cut level set method. Then, by varying the relative densities, the microstructure instances are sampled and the mesoscopic equivalent properties are computed using the homogenization method. After that, a spectral decomposition-based interpolation model is used to predict the relationship between the relative densities and the elastic tensors. These preparations allow for the mesoscopic optimization of the GMs distribution, and the reconstruction of the graded multi-scale metamaterial structures by using a mapping transformation on the density field. Various types of auxetic metamaterials are performed to demonstrate the effectiveness and versatility of the proposed method.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"353 ","pages":"Article 118678"},"PeriodicalIF":6.3,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142707178","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
Repair technologies for structural polymeric composites: An automotive perspective 结构性聚合复合材料的修复技术:汽车视角
IF 6.3 2区 材料科学
Composite Structures Pub Date : 2024-11-14 DOI: 10.1016/j.compstruct.2024.118711
Sandeep Olhan , Bindu Antil , B.K. Behera
{"title":"Repair technologies for structural polymeric composites: An automotive perspective","authors":"Sandeep Olhan ,&nbsp;Bindu Antil ,&nbsp;B.K. Behera","doi":"10.1016/j.compstruct.2024.118711","DOIUrl":"10.1016/j.compstruct.2024.118711","url":null,"abstract":"<div><div>Structural polymeric composite (SPC) materials have become increasingly popular in the automotive industry due to their lightweight potential, excellent fatigue, and impact resistance, superior damping behavior, and high strength and stiffness properties. The automotive sector shows a strong interest in enhancing the repair methods for SPC. However, with immature SPC design rules, production processes, and joining technologies, the safety and efficiency of composite automotive components will heavily rely on effective structural maintenance and repair. Despite its importance, minimal progress has been made in repairing SPC materials over the past decades. Consequently, there is a pressing need to enhance composite repair practices and foster innovation in this vital area. This paper aims to address this demand by focusing on repair techniques and covering various state-of-the-art processing steps associated with SPC materials in the automotive industry. The review contributes an overview of several crucial aspects of composite repair, encompassing advanced non-destructive testing (NDT) methods for damage assessment, machining of structural composites, and surface preparation techniques. Furthermore, it delves into scarfing repair methods, such as patching and bonding, along with repair monitoring and automation, case studies, and emerging trends in composite repair technologies.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"352 ","pages":"Article 118711"},"PeriodicalIF":6.3,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142663467","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
Damage of composite thin-walled L profiles made in one production cycle 在一个生产周期内制成的复合薄壁 L 型材的损坏情况
IF 6.3 2区 材料科学
Composite Structures Pub Date : 2024-11-14 DOI: 10.1016/j.compstruct.2024.118705
Jarosław Gawryluk, Andrzej Teter
{"title":"Damage of composite thin-walled L profiles made in one production cycle","authors":"Jarosław Gawryluk,&nbsp;Andrzej Teter","doi":"10.1016/j.compstruct.2024.118705","DOIUrl":"10.1016/j.compstruct.2024.118705","url":null,"abstract":"<div><div>The experimental results for a thin-walled laminated L-profile under uniform shortening are discussed in this paper. The objective of this study is to explore if accurately manufactured thin-walled structures exhibit similar behaviour at their limit state. Test samples consisted of 18 carbon laminate plies with a nominal structural thickness 0.81 mm. Geometry analysis of real samples was carried out on all samples using a 3D scanner. The columns are subjected to uniform shortening using a testing machine until they fail structurally. Additionally, acoustic emission and the Aramis system are employed. Despite being produced in a single manufacturing cycle, three different form of damage are identified: a crack in one wall near the sample’s center, opening of both walls, and crushing of one end. The acoustic emission signals acquired are analyzed to determine the load at which damage initiates, as well as the moments at which matrix and fiber breakage occur. The accuracy of the sample production (including its thickness and geometrical imperfections) has a significant impact on the form of damage that occurs when thin-walled profiles with one corner are compressed.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"352 ","pages":"Article 118705"},"PeriodicalIF":6.3,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142663465","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
Optimal design of electrical conductivity of hybrid multi-dimensional carbon fillers reinforced porous cement-based Composites: Experiment and modelling 混合多维碳填料增强多孔水泥基复合材料导电性的优化设计:实验与建模
IF 6.3 2区 材料科学
Composite Structures Pub Date : 2024-11-14 DOI: 10.1016/j.compstruct.2024.118714
Yucheng Fan , Chuang Feng , Ziyan Hang , Luming Shen , Wengui Li
{"title":"Optimal design of electrical conductivity of hybrid multi-dimensional carbon fillers reinforced porous cement-based Composites: Experiment and modelling","authors":"Yucheng Fan ,&nbsp;Chuang Feng ,&nbsp;Ziyan Hang ,&nbsp;Luming Shen ,&nbsp;Wengui Li","doi":"10.1016/j.compstruct.2024.118714","DOIUrl":"10.1016/j.compstruct.2024.118714","url":null,"abstract":"<div><div>Cement-based composites with tailored electrical conductivity have promising applications in various intelligent and multifunctional infrastructures. Hybrid reinforcement using multi-dimensional carbon nanofillers is an effective approach for tailoring. However, determining the optimal recipe while balancing electrical properties and cost is challenging, which has not been carried out previously. This study develops a comprehensive micromechanical model with imperfect micromorphology, interface effect and electron tunneling to predict the electrical conductivity of cement-based composites reinforced with different combinations of 0D (zero-dimensional)-carbon black (CB), 1D-carbon nanotube (CNT) and 2D-graphene nanoplatelet (GNP). The influence of pore orientation on the electrical conductivity of the carbon nanofiller reinforced cement-based composites (CNRCCs) is studied for the first time and an effective conductive cross-sectional area method is proposed to investigate the anisotropy of the electrical conductivity in the CNRCCs. Furthermore, this model captures the synergistic effects of the hybrid carbon nanofillers, which has not been addressed in existing theoretical work on conductive composites. The developed model exhibits outstanding agreement with the experimental data of various samples. The optimal proportions for maximum electrical conductivity and performance-to-cost ratio are identified, such as mixing ratios of 80:20 for 0D-CB + 1D-CNT, 50:50 to 70:30 for 0D-CB + 2D-GNP, and 90:10 for 1D-CNT + 2D-GNP. The work is envisaged to provide guidelines for optimizing the performances of CNRCCs with tailored electrical properties and moderate cost.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"352 ","pages":"Article 118714"},"PeriodicalIF":6.3,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142663466","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
A comparative study of tensile fatigue life in various flexible-oriented three-dimensional woven process structures based on finite element models 基于有限元模型的各种柔性导向三维编织工艺结构拉伸疲劳寿命比较研究
IF 6.3 2区 材料科学
Composite Structures Pub Date : 2024-11-13 DOI: 10.1016/j.compstruct.2024.118680
Chenchen Tan , Hao Huang , Zheng Sun , Zhongde Shan , Zitong Guo , Kehong Guo , Jinshuai Bian , Weihao Wang
{"title":"A comparative study of tensile fatigue life in various flexible-oriented three-dimensional woven process structures based on finite element models","authors":"Chenchen Tan ,&nbsp;Hao Huang ,&nbsp;Zheng Sun ,&nbsp;Zhongde Shan ,&nbsp;Zitong Guo ,&nbsp;Kehong Guo ,&nbsp;Jinshuai Bian ,&nbsp;Weihao Wang","doi":"10.1016/j.compstruct.2024.118680","DOIUrl":"10.1016/j.compstruct.2024.118680","url":null,"abstract":"<div><div>To achieve a comparative study of tensile fatigue life in various three-dimensional (3D) structures, 3D orthogonal woven composite (3DOWC), off-axis 3D orthogonal woven composite (OA-3DOWC) and multiaxial 3D woven composite (M3DWC), were designed and manufactured. Tensile and fatigue tests were performed, and microcomputed tomography (Micro-CT) was utilized to observe the mesoscale structural characteristics and the fatigue fracture morphology. Finite element models were established based on the observation. Then a modified power-law fatigue damage model was used for reduction of stiffness and strength during fatigue loading process, and a normalized life model was used to predict the fatigue life at different stress levels. Comparisons were conducted with existing models to analyze their predictive accuracy. Results showed that the tensile strength of M3DWC decreased by 54.6 % compared to 3DOWC, while its fatigue performance of M3DWC was significantly improved. Additionally, OA-3DOWC had the worst tensile strength but slightly improved fatigue performance compared to 3DOWC. And for the maximum error between the prediction and experimental results for the fatigue life is 11.16 %. For the fatigue life at the same stress level, M3DWC &gt; OA-3DOWC &gt; 3DOWC, due to the complex crack propagation paths in the staggered fiber arrangement.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"352 ","pages":"Article 118680"},"PeriodicalIF":6.3,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142701194","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
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