Composite Structures最新文献

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 , Bindu Antil , 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, 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 , Chuang Feng , Ziyan Hang , Luming Shen , 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

Additive manufacturing of gradient porous Si/SiC ceramic parts: Quasi-static behaviors and mechanical properties 梯度多孔硅/碳化硅陶瓷部件的增材制造：准静态行为和机械性能

IF 6.3 2区材料科学

Composite Structures Pub Date : 2024-11-13 DOI: 10.1016/j.compstruct.2024.118693

Ce Sun , Song Zhang , Rong Tu , Lihong Wu , Jiahao Ye , Yusheng Shi , Chunze Yan , Huajun Sun , Yuhan Liao , Peng Chen , Kai Liu

{"title":"Additive manufacturing of gradient porous Si/SiC ceramic parts: Quasi-static behaviors and mechanical properties","authors":"Ce Sun , Song Zhang , Rong Tu , Lihong Wu , Jiahao Ye , Yusheng Shi , Chunze Yan , Huajun Sun , Yuhan Liao , Peng Chen , Kai Liu","doi":"10.1016/j.compstruct.2024.118693","DOIUrl":"10.1016/j.compstruct.2024.118693","url":null,"abstract":"<div><div>Porous silicon carbide (SiC) ceramic exhibits low density, high toughness, which endow it with an indispensable role in engineering applications. However, the manufacturing, designing, and making full use of the rich pore structure of gradient porous SiC ceramic to improve its mechanical performance still face many challenges. Herein, the manufacture of gradient porous Si/SiC ceramic part is realized for the first time, and the influence of gradient structural on mechanical properties is deeply analyzed. The results indicate that the porous Si/SiC ceramics with constant gradient transition rate is characterized by step-by-step destruction and can carry larger strains than the porous Si/SiC ceramics with non-constant gradient transition rate. Meanwhile, reducing the gradient span can improve the strength, but it is easy to lead to brittle damage. In particular, gradient porous Si/SiC ceramics with constant gradient transition rate and 30 % gradient span can exhibit both good strength and toughness. The compressive strength can reach 11.71 MPa, and the equivalent elastic modulus can reach 2.28 GPa. Finally, a laminar material prediction model for mechanical properties is presented. This paper presents an effective fabrication method for gradient porous ceramic parts and provides a feasible means for the design and prediction of mechanical properties.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"352 ","pages":"Article 118693"},"PeriodicalIF":6.3,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142663468","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

The synergistic effect of nano-Al2O3 size and concentration on the interfacial adhesion properties of SMA/PDMS composites and their enhancement mechanism 纳米 Al2O3 尺寸和浓度对 SMA/PDMS 复合材料界面粘附性能的协同效应及其增强机制

IF 6.3 2区材料科学

Composite Structures Pub Date : 2024-11-10 DOI: 10.1016/j.compstruct.2024.118696

Junjie Xiao, Biao Liang, Bo Liu, Mengfei Feng, Hui Cheng, Kaifu Zhang

{"title":"The synergistic effect of nano-Al2O3 size and concentration on the interfacial adhesion properties of SMA/PDMS composites and their enhancement mechanism","authors":"Junjie Xiao, Biao Liang, Bo Liu, Mengfei Feng, Hui Cheng, Kaifu Zhang","doi":"10.1016/j.compstruct.2024.118696","DOIUrl":"10.1016/j.compstruct.2024.118696","url":null,"abstract":"<div><div>Soft actuators composed of shape memory alloy (SMA) wires embedded in polydimethylsiloxane (PDMS) matrix hold potential for shape-morphing structures and soft robots. However, SMA exhibits poor bonding with PDMS due to its smooth and nonpolar surfaces. Nanoparticles show promise in interfacial strengthening of polymer composites. In this work, KH590 was used to modify nano-Al<sub>2</sub>O<sub>3</sub> particles and deposited on the SMA surface, creating a three-dimensional nanostructure bridging SMA and PDMS to enhance interface strength. The synergistic effects of particle size and content of nano-Al<sub>2</sub>O<sub>3</sub> particles on the interface strength were investigated in detail. It founds that interfacial strength decreased exponentially with particle size at content of 1 wt%, while when the content exceeds 1 wt%, the interface strength firstly increases with the particle size and then decreases in a logarithmic trend. Specifically, the interface strength is enhanced by 110 % with 3 wt% 50 nm particles. The interface enhancement mechanism was also discussed. The proposed nanoparticle modification approach was to strengthen SMA/PDMS interphase by increasing and extending fracture path, consuming more fracture energy. Chemical cross-linking also contributed to interface enhancement. This work enhances understanding of interfacial bonding mechanisms and provides valuable guide for interfacial strengthening of SMA/PDMS.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"352 ","pages":"Article 118696"},"PeriodicalIF":6.3,"publicationDate":"2024-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142663462","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

Electrical energy and overpressure characterization of aeronautical fasteners submitted to a lightning current waveform 雷电流波形下航空紧固件的电能和过压特性分析

IF 6.3 2区材料科学

Composite Structures Pub Date : 2024-11-10 DOI: 10.1016/j.compstruct.2024.118700

Rafael Sousa Martins, Amélie Jarnac, Clément Zaepffel, Philippe Lalande

{"title":"Electrical energy and overpressure characterization of aeronautical fasteners submitted to a lightning current waveform","authors":"Rafael Sousa Martins, Amélie Jarnac, Clément Zaepffel, Philippe Lalande","doi":"10.1016/j.compstruct.2024.118700","DOIUrl":"10.1016/j.compstruct.2024.118700","url":null,"abstract":"<div><div>Understanding and controlling sparking in fasteners and jointed structures is crucial for flight safety, particularly in fuel tanks. This study investigates the relationship between dissipated electrical energy and pressure buildup within fastener cavities during lightning strikes. Experiments were performed on fasteners installed in aluminum and Carbon Fiber Reinforced Polymer (CFRP) samples, with lightning current waveforms ranging from 1 kA to 10 kA. A sensitivity analysis evaluated the influence of key parameters, such as current peak, clearance fit, sample material, polarity, and fastener coating on pressure rise and energy dissipation. Electrical energy up to 80 J and pressure levels reaching 600 bar– unprecedented compared to prior studies– were observed. The pressure-energy relationship showed an approximately linear trend, while pressure exhibited a non-linear dependence on clearance fit. Fastener coating and sample material were found to significantly influence the results, with pressure variations reaching up to a factor of 10 in some cases</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"352 ","pages":"Article 118700"},"PeriodicalIF":6.3,"publicationDate":"2024-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142663463","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

An ultrasonic Lamb wave-based non-linear exponential RAPID method for delamination detection in composites 基于超声波 Lamb 波的复合材料分层检测非线性指数 RAPID 方法

IF 6.3 2区材料科学

Composite Structures Pub Date : 2024-11-10 DOI: 10.1016/j.compstruct.2024.118701

Kai Luo , Liang Chen , Yuan Chen , Lin Ye , Sunquan Yu

{"title":"An ultrasonic Lamb wave-based non-linear exponential RAPID method for delamination detection in composites","authors":"Kai Luo , Liang Chen , Yuan Chen , Lin Ye , Sunquan Yu","doi":"10.1016/j.compstruct.2024.118701","DOIUrl":"10.1016/j.compstruct.2024.118701","url":null,"abstract":"<div><div>Accurate detection of defects, particularly delamination, in carbon-fiber reinforced polymer (CFRP) composites is crucial but challenging. This study proposes a baseline-free Lamb wave damage imaging framework that incorporates an adaptive time-reversal technique and a nonlinear exponential reconstruction algorithm for probabilistic inspection of defects (NE-RAPID) in composites. The framework combines two image fusion strategies: full-summation and full-multiplication. NE-RAPID enhances the traditional RAPID algorithm by replacing linear weights with faster-decaying exponential weights, which improves the localization of delamination and other defect regions with higher resolution. A nonlinear exponential weighting function is introduced to address uneven probability distributions caused by the non-uniform density of the sensor network, thereby improving the accuracy and reliability of defect detection, including delamination. Experimental validation on CFRP composite plates demonstrates that NE-RAPID significantly outperforms RAPID. NE-RAPID achieves a maximum detection error of only 5.1 mm across different frequencies, whereas RAPID shows a much higher error of 34.41 mm. Furthermore, NE-RAPID generates sharper damage images with fewer artifacts, significantly reducing the risk of false positives and improving the overall detection reliability. These findings indicate that NE-RAPID is a highly promising method for precise and reliable delamination detection in composite materials.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"352 ","pages":"Article 118701"},"PeriodicalIF":6.3,"publicationDate":"2024-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142663328","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 results for fatigue damage growth in laminated fiber reinforced cross-ply laminates 层状纤维增强交叉层压板疲劳损伤增长的实验结果

IF 6.3 2区材料科学

Composite Structures Pub Date : 2024-11-10 DOI: 10.1016/j.compstruct.2024.118702

J. Fernando Rojas Sanchez , Anthony M. Waas

引用次数: 0

Inverse design method of deployable cylindrical composite shells for solar sail structure 用于太阳能帆结构的可展开圆柱形复合材料壳体的逆设计方法

IF 6.3 2区材料科学

Composite Structures Pub Date : 2024-11-09 DOI: 10.1016/j.compstruct.2024.118698

Zheng Zhang , Diyong Huang , Baisong Pan , Huping Zhou , Jingya Ma , Min Sun , Shouzhi Ren , Guang Zhang

{"title":"Inverse design method of deployable cylindrical composite shells for solar sail structure","authors":"Zheng Zhang , Diyong Huang , Baisong Pan , Huping Zhou , Jingya Ma , Min Sun , Shouzhi Ren , Guang Zhang","doi":"10.1016/j.compstruct.2024.118698","DOIUrl":"10.1016/j.compstruct.2024.118698","url":null,"abstract":"<div><div>The deployable cylindrical composite shell (DCCS) applied in the solar sail structure requires suitable geometric parameters to have high storage capacity and large sunlight area. However, it is difficult to obtain the suitable geometric parameters of DCCS. An inverse design method combining the advantages of radial basis function artificial neural network (RBFANN) and multi-island genetic algorithm (MIGA) is proposed to obtain the geometric parameters of DCCS in this paper. RBFANN has the ability of self-learning and nonlinear problem solving, MIGA has the ability of global optimization. The specimens of DCCS were manufactured based on the obtained geometric parameters. The coiling radius, driving characteristics of specimens were studied by experiment and finite element simulation, and the numerical results are in good agreement with the experimental results, which verify the effectiveness of the inverse design method. The inverse design method proposed in this paper can effectively obtain the geometric parameters of DCCS, which also can guide the design of solar sail structure.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"352 ","pages":"Article 118698"},"PeriodicalIF":6.3,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142663459","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

Finite element submodeling technique-based fatigue analysis and reliability modeling of wind turbine blade trailing edge 基于有限元子建模技术的风力涡轮机叶片后缘疲劳分析和可靠性建模

IF 6.3 2区材料科学

Composite Structures Pub Date : 2024-11-09 DOI: 10.1016/j.compstruct.2024.118699

Zheng Liu, Jinlong Liang, Zhenfeng He, Xin Liu, Haodong Liu, Zhenjiang Shao

{"title":"Finite element submodeling technique-based fatigue analysis and reliability modeling of wind turbine blade trailing edge","authors":"Zheng Liu, Jinlong Liang, Zhenfeng He, Xin Liu, Haodong Liu, Zhenjiang Shao","doi":"10.1016/j.compstruct.2024.118699","DOIUrl":"10.1016/j.compstruct.2024.118699","url":null,"abstract":"<div><div>Wind turbine blades play a critical role in wind turbine systems, with the trailing edge bearing significant mechanical loads. During operational cycles, the adhesively bonded composite trailing edge may fracture, delaminate, or buckle, posing a safety risk for wind turbine systems. While finite element simulation is commonly used to evaluate blade fatigue performance due to the challenges associated with full-scale structural tests in terms of costs and time, current methodologies mainly focus on the overall fatigue characteristics of blades, neglecting specialized analyses. A finite element submodeling approach is presented here to address this research gap by analyzing wind turbine blade trailing edges for fatigue and reliability. Specifically, a finite element submodelingmethodis proposedtoanalyzelocal fatiguefailuresof wind turbine blades. This approach is validated through fatigue testing on conventional composite bonded specimens. Subsequently, failure analyses and life predictions are conducted on the trailing edges to investigate their fatigue behavior, followed by an exploration of the impact of submodeling techniques on the analysis results. Furthermore, considering material and dimensional uncertainties, a fatigue reliability model for trailing edges is developed. The results demonstrate that this approach effectively overcomes the limitations of overall blade finite element analysis by enabling localized fatigue analysis of the trailing edge, providing valuable insights for improving wind turbine blade design optimization.</div></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":"352 ","pages":"Article 118699"},"PeriodicalIF":6.3,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142663458","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