Composites Part C Open Access最新文献

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3D observation of delamination in carbon-fibre-reinforced composites under mode II loading through in situ computed tomography 通过原位计算机断层扫描观察II型载荷下碳纤维增强复合材料的分层
IF 5.3
Composites Part C Open Access Pub Date : 2025-06-03 DOI: 10.1016/j.jcomc.2025.100615
Panayiotis Tsokanas, Thanasis Chatziathanasiou, Yentl Swolfs
{"title":"3D observation of delamination in carbon-fibre-reinforced composites under mode II loading through in situ computed tomography","authors":"Panayiotis Tsokanas,&nbsp;Thanasis Chatziathanasiou,&nbsp;Yentl Swolfs","doi":"10.1016/j.jcomc.2025.100615","DOIUrl":"10.1016/j.jcomc.2025.100615","url":null,"abstract":"<div><div>Delamination is among the most prevalent life-limiting failure modes in laminated composites. Mode II delaminations, driven by in-plane shear loads, are more difficult to observe than mode I delaminations. Conventional edge observation techniques fail to capture the three-dimensional (3D) delamination front and its associated damage mechanisms. We conduct the first in situ X-ray computed tomography (CT) experiment to observe the 3D development of delamination under mode II loading. We apply four-point end-notched flexure loading to two types of thin-ply, carbon-fibre-reinforced composite laminates: a 0° laminate and a cross-ply laminate susceptible to delamination migration. The method is proven capable of capturing delamination growth and migration within the bulk of the laminates at the meso- and microscale, something unattainable using conventional techniques. This work thus demonstrates the benefits of in situ CT in determining the damage mechanisms involved in mode II fracture loading.</div></div>","PeriodicalId":34525,"journal":{"name":"Composites Part C Open Access","volume":"17 ","pages":"Article 100615"},"PeriodicalIF":5.3,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144313006","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","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 temperature and fibre reinforcement on dynamic crush performance of glass-polyamide 6 composite tubes 温度和纤维增强对玻璃-聚酰胺6复合材料管动态粉碎性能的影响
IF 5.3
Composites Part C Open Access Pub Date : 2025-06-02 DOI: 10.1016/j.jcomc.2025.100610
Holger Böhm , Jonas Richter , Jinbong Kim , Mungyu Jeong , Andreas Hornig , Maik Gude
{"title":"Effect of temperature and fibre reinforcement on dynamic crush performance of glass-polyamide 6 composite tubes","authors":"Holger Böhm ,&nbsp;Jonas Richter ,&nbsp;Jinbong Kim ,&nbsp;Mungyu Jeong ,&nbsp;Andreas Hornig ,&nbsp;Maik Gude","doi":"10.1016/j.jcomc.2025.100610","DOIUrl":"10.1016/j.jcomc.2025.100610","url":null,"abstract":"<div><div>In this study, the dynamic axial crushing response of tubular specimens made of glass-polyamide 6 composite material, with either mat or continuous bidirectional fibre reinforcement is experimentally investigated under three different temperature settings: −40 °<span><math><mi>C</mi></math></span>, 23 °<span><math><mi>C</mi></math></span> and 80 °<span><math><mi>C</mi></math></span>. The assessment and evaluation of the dynamic crush performance are based on the measured global force–displacement response, application of typical crashworthiness criteria and a detailed examination of the existing damage and failure phenomena, which are responsible for energy absorption. At temperatures of 23 °<span><math><mi>C</mi></math></span> and −40 °<span><math><mi>C</mi></math></span>, all specimens showed a stable progressive crushing process by a pronounced splaying failure. Specimens with mat fibre reinforcement show a more stable and efficient crushing behaviour than specimens with continuous bidirectional fibre reinforcement. This behaviour changes for a temperature of 80 °<span><math><mi>C</mi></math></span> where the continuous bidirectional reinforced specimens exhibit a higher crush efficiency, while specimens with mat fibre reinforcement show a very unstable crushing process, leading to local compressive kinking failure and a 22% decrease in crush efficiency.</div></div>","PeriodicalId":34525,"journal":{"name":"Composites Part C Open Access","volume":"17 ","pages":"Article 100610"},"PeriodicalIF":5.3,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144306789","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Investigation of mechanical, thermal, and tribological performance of activated carbon-glass/epoxy hybrid composites 活性炭-玻璃/环氧复合材料的机械、热、摩擦学性能研究
IF 5.3
Composites Part C Open Access Pub Date : 2025-06-01 DOI: 10.1016/j.jcomc.2025.100614
Om Prakash Minugu , Raghavendra Gujjala , Shakuntala Ojha , Deeraj Kumar Gara , Aswani Kumar Bandaru
{"title":"Investigation of mechanical, thermal, and tribological performance of activated carbon-glass/epoxy hybrid composites","authors":"Om Prakash Minugu ,&nbsp;Raghavendra Gujjala ,&nbsp;Shakuntala Ojha ,&nbsp;Deeraj Kumar Gara ,&nbsp;Aswani Kumar Bandaru","doi":"10.1016/j.jcomc.2025.100614","DOIUrl":"10.1016/j.jcomc.2025.100614","url":null,"abstract":"<div><div>The present study investigated activated carbon (AC) material, a biomass derivative, as a significant reinforcement for developing hybrid polymer composites for brake pad applications. Hybrid composites were manufactured using a simple hand lay-up technique utilizing different weight percentages of AC, silicon carbide, glass fiber (GF), and epoxy resin as constituents. This work investigated the mechanical performance, thermal stability, and wear properties of hybrid composites. Modifying composites with 2 % AC and 6 % glass fiber improved the tensile and flexural strengths by approximately 340 % and 206 %, respectively, compared to the neat epoxy. The thermogravimetric analysis suggested that incorporating AC contributed to the composites' thermal stability. Wear analysis suggested incorporating AC and GF strengthened composites for reducing two-body sliding wear. A 2 % AC and 6 % GF combination showed the maximum resistance against wear, with approximately 101 % less material loss than the pure epoxy. It also exhibited average coefficient of friction values in the range of 0.51 to 0.59 at different applied loads. The FESEM analysis of the fractured and worn surfaces of the composites revealed that fiber pull-outs and poor interfacial bonding are the primary phenomena responsible for the fracture of the composites.</div></div>","PeriodicalId":34525,"journal":{"name":"Composites Part C Open Access","volume":"17 ","pages":"Article 100614"},"PeriodicalIF":5.3,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144255171","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The role of ply clustering in the impact damage of woven carbon/epoxy laminates: An experimental-numerical study 碳/环氧复合材料层合板冲击损伤中层合层聚类作用的实验-数值研究
IF 5.3
Composites Part C Open Access Pub Date : 2025-05-24 DOI: 10.1016/j.jcomc.2025.100603
P.G. Rodríguez-Luján, R. del Cuvillo, J.M. Rodríguez-Sereno, J.A. Artero-Guerrero, D. Varas, J. Pernas-Sánchez
{"title":"The role of ply clustering in the impact damage of woven carbon/epoxy laminates: An experimental-numerical study","authors":"P.G. Rodríguez-Luján,&nbsp;R. del Cuvillo,&nbsp;J.M. Rodríguez-Sereno,&nbsp;J.A. Artero-Guerrero,&nbsp;D. Varas,&nbsp;J. Pernas-Sánchez","doi":"10.1016/j.jcomc.2025.100603","DOIUrl":"10.1016/j.jcomc.2025.100603","url":null,"abstract":"<div><div>This study investigates the impact behaviour of carbon/epoxy woven laminates through experimental and numerical analysis, with particular emphasis on the effects of ply clustering. Drop weight tower tests were performed for three different ply clustering configurations. In addition, 3D Digital Image Correlation (DIC) techniques were used to analyse out-of-plane displacements, providing a deeper insight into the phenomenon that triggers the failure mechanisms. Internal damage was further characterized using ultrasonic C-scan techniques to quantify the extent of damage. A major contribution of this work is the development of a three-dimensional constitutive model based on continuum damage mechanics that incorporates multiple failure mechanisms, with special attention to transverse shear damage. Numerical simulations of the drop-weight tower tests were performed for all three laminate configurations, validating the ability of the constitutive model to predict force and energy responses, as well as the failure mechanisms observed during the tests. The constitutive model was found to be useful in understanding the interaction between interlaminar and intralaminar failure mechanisms under out-of-plane loading conditions, such as drop weight tower tests and other impact scenarios. The study highlights the importance of laminate clustering for perforation resistance and the need to incorporate transverse shear damage into numerical models to accurately capture the perforation process.</div></div>","PeriodicalId":34525,"journal":{"name":"Composites Part C Open Access","volume":"17 ","pages":"Article 100603"},"PeriodicalIF":5.3,"publicationDate":"2025-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144205546","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Data-driven discovery of the design rules for considering the curing deformation and the application on double-double composites 数据驱动下发现考虑固化变形的设计规则及其在双-双复合材料中的应用
IF 5.3
Composites Part C Open Access Pub Date : 2025-05-22 DOI: 10.1016/j.jcomc.2025.100612
Yizhuo Gui , Hongwei Song , Jinglei Yang , Cheng Qiu
{"title":"Data-driven discovery of the design rules for considering the curing deformation and the application on double-double composites","authors":"Yizhuo Gui ,&nbsp;Hongwei Song ,&nbsp;Jinglei Yang ,&nbsp;Cheng Qiu","doi":"10.1016/j.jcomc.2025.100612","DOIUrl":"10.1016/j.jcomc.2025.100612","url":null,"abstract":"<div><div>The process-induced deformation (PID) of composite laminates has been one of the critical problems for engineering structures. While lots of design rules has been proposed for standardize the laminate design, there is a lack of specific rule to follow when controlling PID is a necessity due to the numerous affecting parameters. In this regard, a data-driven framework was proposed in this paper to determine the layup rules to follow for minimizing PID. Two specific machine learning (ML) models were built. One is combined model of convolutional neural networks (CNN) and principle component analysis (PCA) technique for connecting the layup sequences and their corresponding PID. Another one is the symbolic regression model, as an explainable ML technique, to quantitatively evaluate this connection. With the training data generated from the robust numerical simulation, it is found that a proper asymmetry is the key intrinsic factor that makes a smaller PID as it will counteract with the contributions of other extrinsic mechanisms. More importantly, a formula for easy evaluation of the asymmetry is provided to assist in guiding the layup design considering PID constraints. The formula is applied on the design problem of double-double (DD) composites. With the proper asymmetry added onto the original DD layup, the DD composites show a clear improvement on controlling the PID.</div></div>","PeriodicalId":34525,"journal":{"name":"Composites Part C Open Access","volume":"17 ","pages":"Article 100612"},"PeriodicalIF":5.3,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144137880","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Sustainable biobased composites manufactured via Joule heating curing with recycled carbon fibers 可持续生物基复合材料通过焦耳加热固化再生碳纤维
IF 5.3
Composites Part C Open Access Pub Date : 2025-05-13 DOI: 10.1016/j.jcomc.2025.100609
Liberata Guadagno , Luigi Vertuccio , Francesca Aliberti , Elisa Calabrese , Marialuigia Raimondo , Roberto Pantani , Raffaele Longo
{"title":"Sustainable biobased composites manufactured via Joule heating curing with recycled carbon fibers","authors":"Liberata Guadagno ,&nbsp;Luigi Vertuccio ,&nbsp;Francesca Aliberti ,&nbsp;Elisa Calabrese ,&nbsp;Marialuigia Raimondo ,&nbsp;Roberto Pantani ,&nbsp;Raffaele Longo","doi":"10.1016/j.jcomc.2025.100609","DOIUrl":"10.1016/j.jcomc.2025.100609","url":null,"abstract":"<div><div>The use and development of thermosetting composites are limited by several complex and interconnected environmental issues, such as the continued use of fossil-based resins and the high energy demand for fibers (especially carbon fibers) and composite manufacturing. In the present research, these three criticalities are discussed, proposing the design of highly performing bio-resin and the development of thermosetting composites with recycled carbon fibers using cutting-edge, low-energy demanding processes. Exploiting the electrical conductivity of the recycled carbon fibers mat, the composites have been cured directly via Joule heating, generating heat inside the component and reaching a temperature of about 180 °C, suitable to guarantee a high curing degree of the employed thermosetting resin. Thermal parameters (temperature and heating time) have been selected based on the preliminary characterization of the biobased epoxy resin. The composites obtained using this innovative approach manifest a glass transition temperature higher than 198 °C and a complete curing degree.</div></div>","PeriodicalId":34525,"journal":{"name":"Composites Part C Open Access","volume":"17 ","pages":"Article 100609"},"PeriodicalIF":5.3,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144084278","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Degradation behaviour and damage mechanisms of carbon fibre reinforced polymer composite laminates subjected to laser irradiation 激光辐照下碳纤维增强聚合物复合材料层合板的降解行为及损伤机理
IF 5.3
Composites Part C Open Access Pub Date : 2025-05-10 DOI: 10.1016/j.jcomc.2025.100605
Patrick K. Kamlade , Jojibabu Panta , Max Mammone , Richard (Chunhui) Yang , Richard P. Mildren , John Wang , Matthew Ibrahim , Rodney Thomson , Y.X. Zhang
{"title":"Degradation behaviour and damage mechanisms of carbon fibre reinforced polymer composite laminates subjected to laser irradiation","authors":"Patrick K. Kamlade ,&nbsp;Jojibabu Panta ,&nbsp;Max Mammone ,&nbsp;Richard (Chunhui) Yang ,&nbsp;Richard P. Mildren ,&nbsp;John Wang ,&nbsp;Matthew Ibrahim ,&nbsp;Rodney Thomson ,&nbsp;Y.X. Zhang","doi":"10.1016/j.jcomc.2025.100605","DOIUrl":"10.1016/j.jcomc.2025.100605","url":null,"abstract":"<div><div>This study presents a comprehensive and insightful investigation into the thermal degradation and damage mechanisms of carbon fibre reinforced polymer (CFRP) composite laminates exposed to continuous wave laser irradiation with a Gaussian beam profile. The effects of laser power, beam diameter, and exposure time were explored to reflect practical scenarios such as material processing, maintenance, and damage assessment. Thermogravimetric analysis (TGA) was first carried out in both nitrogen and air environments to understand the thermal stability and degradation behaviour of the CFRP material. Initial laser tests were conducted at 30 W and 40 W using a beam diameter of 3.46 mm to assess early-stage damage. These results informed a more intensive study using a higher laser power of 98 W with beam diameters of 3.18 mm and 5.70 mm, where specimens were irradiated until complete perforation. Thermal imaging was used to monitor surface temperature evolution on both front and back sides during irradiation. For the 98 W cases, the larger beam diameter required a 53 % longer exposure time to achieve perforation, highlighting the role of power density in damage progression. Post-irradiation analysis using scanning electron microscopy (SEM), ultrasonic C-scans, and micro-focused X-ray computed tomography (micro-CT) revealed fibre sublimation, matrix decomposition, cone-shaped perforations, and interlaminar cracking. The results provide valuable insights into how CFRP materials respond to high-intensity laser exposure and can support the development of strategies to mitigate damage and improve structural performance in real-world applications.</div></div>","PeriodicalId":34525,"journal":{"name":"Composites Part C Open Access","volume":"17 ","pages":"Article 100605"},"PeriodicalIF":5.3,"publicationDate":"2025-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144084279","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Sustainable composites from microcrystalline cellulose and cellulose acetate: 3D printing and performance optimization 从微晶纤维素和醋酸纤维素可持续复合材料:3D打印和性能优化
IF 5.3
Composites Part C Open Access Pub Date : 2025-05-10 DOI: 10.1016/j.jcomc.2025.100606
Laura Daniela Hernandez-Ruiz , Malik Hassan , Tao Wang , Amar K. Mohanty , Manjusri Misra
{"title":"Sustainable composites from microcrystalline cellulose and cellulose acetate: 3D printing and performance optimization","authors":"Laura Daniela Hernandez-Ruiz ,&nbsp;Malik Hassan ,&nbsp;Tao Wang ,&nbsp;Amar K. Mohanty ,&nbsp;Manjusri Misra","doi":"10.1016/j.jcomc.2025.100606","DOIUrl":"10.1016/j.jcomc.2025.100606","url":null,"abstract":"<div><div>Novel green composites were developed using microcrystalline cellulose (MCC) and plasticized cellulose acetate (pCA) to assess their viability for application in additive manufacturing (AM), specifically fused filament fabrication (FFF). This study represents one of the first attempts to fabricate and optimize a sustainable MCC-pCA composite for use as a 3D printing filament. The Taguchi L27 experimental design was employed to optimize five critical FFF parameters, namely nozzle temperature, printing speed, infill density, raster angle, and layer height, with the objective of maximizing mechanical performance. Optimal printing parameters were determined to be a nozzle temperature of 230 °C, a printing speed of 1800 mm/min, an infill density of 100 %, a raster angle of 0°, and a layer height of 0.15 mm. Under these conditions, the 3D-printed samples exhibited mechanical properties comparable to those of injection-molded counterparts, with a 37 % increase in impact strength. The coefficient of linear thermal expansion (CLTE) of the optimized 3D-printed sample was 89.36 μm/m °C (perpendicular) and 65.39 μm/m °C (parallel), demonstrating lower thermal expansion than injection-molded counterparts (108.65 μm/m °C and 47.06 μm/m °C, respectively). Furthermore, the heat deflection temperature (HDT) of the optimized 3D-printed sample was 92.18 °C, surpassing that of injection-molded samples (69.59 °C), indicating superior thermal resistance in the 3D-printed part. As a proof-of-concept, a 3D printed finger splint was fabricated using the optimized parameters, showcasing the potential of this sustainable composite for biomedical applications.</div></div>","PeriodicalId":34525,"journal":{"name":"Composites Part C Open Access","volume":"17 ","pages":"Article 100606"},"PeriodicalIF":5.3,"publicationDate":"2025-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144170342","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Nonlinear forced vibration analysis of FG-CNTRC plates based on the 3D elasticity 基于三维弹性的FG-CNTRC板非线性强迫振动分析
IF 5.3
Composites Part C Open Access Pub Date : 2025-05-09 DOI: 10.1016/j.jcomc.2025.100607
Y. Gholami , R. Ansari , H. Rouhi
{"title":"Nonlinear forced vibration analysis of FG-CNTRC plates based on the 3D elasticity","authors":"Y. Gholami ,&nbsp;R. Ansari ,&nbsp;H. Rouhi","doi":"10.1016/j.jcomc.2025.100607","DOIUrl":"10.1016/j.jcomc.2025.100607","url":null,"abstract":"<div><div>In this article, an efficient numerical approach is developed to study the primary resonant dynamics of rectangular plates with arbitrary boundary conditions made of functionally graded carbon nanotube-reinforced composites (FG-CNTRCs). The problem is formulated in the context of three-dimensional (3D) elasticity theory. Also, a variational approach based on Hamilton’s principle together with the variational differential quadrature (VDQ) method is proposed to obtain the discretized governing equations on space domain. Then, the solution procedure on the time domain is completed using the numerical Galerkin method, time periodic discretization method and pseudo arc-length continuation algorithm in order to find the frequency-response curves. It is considered that CNTs are distributed in the thickness direction based on an FG manner considering different patterns. After testing the convergence and validity of developed approach, numerical results are presented to investigate the influences of geometrical properties, CNT’s volume fraction and distribution pattern on the nonlinear forced vibration response of plates.</div></div>","PeriodicalId":34525,"journal":{"name":"Composites Part C Open Access","volume":"17 ","pages":"Article 100607"},"PeriodicalIF":5.3,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144108004","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Investigating microstructural features and tensile properties of 3D-printed co-polyester reinforced with carbon fibres 研究3d打印碳纤维增强共聚酯的微观结构特征和拉伸性能
IF 5.3
Composites Part C Open Access Pub Date : 2025-05-09 DOI: 10.1016/j.jcomc.2025.100604
Lotfi Hedjazi , Sofiane Belhabib , Jaianth Vijayakumar , Elodie Boller , Sofiane Guessasma
{"title":"Investigating microstructural features and tensile properties of 3D-printed co-polyester reinforced with carbon fibres","authors":"Lotfi Hedjazi ,&nbsp;Sofiane Belhabib ,&nbsp;Jaianth Vijayakumar ,&nbsp;Elodie Boller ,&nbsp;Sofiane Guessasma","doi":"10.1016/j.jcomc.2025.100604","DOIUrl":"10.1016/j.jcomc.2025.100604","url":null,"abstract":"<div><div>This study investigates the 3D printing of carbon fibre-reinforced copolyester (COP-CF) composites using fused filament fabrication (FFF) technology, with a focus on the influence of printing parameters on mechanical performance and microstructure. We explore the effects of different printing angles (0° to 90°) on the tensile behaviour, pore connectivity, and microstructural characteristics of 3D-printed COP-CF specimens. Synchrotron X-ray microtomography is employed to analyse the internal structure of printed parts, revealing insights into porosity distribution and fibre alignment. Our results indicate that a 45° printing angle yields the highest mechanical performance, with a tensile strength improvement approaching 70 MPa and a Young’s modulus nearing 1 GPa, attributed to filament alignment in the loading direction and optimal load transfer. Additionally, the elongation at break reaches approximately 10 %, indicating a balance between strength and ductility. The study also highlights the role of process-induced porosity and its impact on mechanical properties. Additionally, the design and testing of a 3D-printed curved hook demonstrate the material's potential for functional applications under mixed-mode loading conditions effectively at a 45° printing angle—outperforming other angles by a factor of 1.71. The findings underscore the importance of printing angle and microstructure control in optimizing the mechanical performance of 3D-printed COP-CF composites for technical applications.</div></div>","PeriodicalId":34525,"journal":{"name":"Composites Part C Open Access","volume":"17 ","pages":"Article 100604"},"PeriodicalIF":5.3,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143935040","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","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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