Composites Part B: Engineering最新文献_第5页

The effect of PTFE on the deformation behavior of PPS composites for high-pressure hydrogen applications 聚四氟乙烯对高压氢气PPS复合材料变形行为的影响

IF 12.7 1区材料科学

Composites Part B: Engineering Pub Date : 2025-06-17 DOI: 10.1016/j.compositesb.2025.112692

Alexander Pöllinger , Julia Maurer , Sarah Heupl , Fabian Wilde , Domonkos Tolnai , Stefan Krenn , Klaus Gebhardt , Eleni Siakkou , Christoph Burgstaller , Vasiliki-Maria Archodoulaki , Michael Schöbel

{"title":"The effect of PTFE on the deformation behavior of PPS composites for high-pressure hydrogen applications","authors":"Alexander Pöllinger , Julia Maurer , Sarah Heupl , Fabian Wilde , Domonkos Tolnai , Stefan Krenn , Klaus Gebhardt , Eleni Siakkou , Christoph Burgstaller , Vasiliki-Maria Archodoulaki , Michael Schöbel","doi":"10.1016/j.compositesb.2025.112692","DOIUrl":"10.1016/j.compositesb.2025.112692","url":null,"abstract":"<div><div>Efficient storage of hydrogen is crucial for the widespread adoption of renewable energy. Reciprocating piston compressors, featuring advanced sealing solutions, are essential to meet the stringent demands of non-lubricated hydrogen applications, ensuring gas purity and high pressure differentials. Polyphenylene sulfide polymer matrix composites exhibit high mechanical strength and low friction and wear, making them valuable in tribological applications. This study investigates carbon fiber reinforced polyphenylene sulfide modifications with different PTFE contents by employing advanced imaging techniques to assess the effect of dry-lubricant on properties with respect to application in high-pressure reciprocating compressors. Thermo-mechanical and tribological testing, along with microstructure analysis utilizing synchrotron tomography, presents the importance of dry lubricating PTFE additives. Furthermore, the research provides insights into the micromechanical deformation behavior of short fiber reinforced polymers and identifies promising compositions suitable for advanced hydrogen compression.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"305 ","pages":"Article 112692"},"PeriodicalIF":12.7,"publicationDate":"2025-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144517430","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Enhanced aramid fiber epoxy resin composites insulation properties via π-π stacking driven ZnONW heterojunction growth to reconstruct aramid fiber surface 通过π-π堆叠驱动ZnONW异质结生长重建芳纶纤维表面，增强芳纶纤维环氧树脂复合材料的绝缘性能

IF 12.7 1区材料科学

Composites Part B: Engineering Pub Date : 2025-06-16 DOI: 10.1016/j.compositesb.2025.112729

Guowei Xia, Jun Xie, Bobin Xu, Xiaoyu Shi, Ping Huang, Yan Li, Qing Xie

{"title":"Enhanced aramid fiber epoxy resin composites insulation properties via π-π stacking driven ZnONW heterojunction growth to reconstruct aramid fiber surface","authors":"Guowei Xia, Jun Xie, Bobin Xu, Xiaoyu Shi, Ping Huang, Yan Li, Qing Xie","doi":"10.1016/j.compositesb.2025.112729","DOIUrl":"10.1016/j.compositesb.2025.112729","url":null,"abstract":"<div><div>The Gas-insulated switchgear (GIS) is the core component in the development of China's new ultra-high voltage power system. Its key part, the insulation pull rod, needs to withstand substantial mechanical loads and impact voltages. The poor compatibility between aramid fiber and epoxy resin is the key problem that affects the insulation performance of pull rods. This paper proposes a method to reconstruct the surface of aramid fibers by utilizing the π-π stacking of iron phthalocyanine (FePc) and the heterojunction growth of zinc oxide nanowires (ZnONW). This approach roughens the fiber surface and improves compatibility, effectively enhancing the insulation performance of aramid fiber-epoxy resin composites. The characterization techniques such as ultraviolet photoelectron spectroscopy (UPS) confirm the π-π stacking effect of FePc and its formation of a heterojunction with ZnO. The insulation performance tests indicate that with a growth concentration of 100 mM and a growth time of 2 h, the aramid fiber-epoxy resin composite exhibits optimal insulation properties. Under these conditions, the breakdown voltage increased by 73.02 %, and the breakdown electric field strength improved by 72.13 %. Molecular dynamics (MD) simulations and density functional theory (DFT) analyses reveal the π-π stacking process and the mechanisms behind the enhanced insulation properties.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"305 ","pages":"Article 112729"},"PeriodicalIF":12.7,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144314368","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Exploring the potential of aramid nanofibers in advancing green-engineered cementitious composites 探索芳纶纳米纤维在推进绿色工程胶凝复合材料中的潜力

IF 12.7 1区材料科学

Composites Part B: Engineering Pub Date : 2025-06-15 DOI: 10.1016/j.compositesb.2025.112724

Huayang Sun , Yan Wan , Zhichao Xu , Yanlin Huo , Minjie Jia , Yingzi Yang

{"title":"Exploring the potential of aramid nanofibers in advancing green-engineered cementitious composites","authors":"Huayang Sun , Yan Wan , Zhichao Xu , Yanlin Huo , Minjie Jia , Yingzi Yang","doi":"10.1016/j.compositesb.2025.112724","DOIUrl":"10.1016/j.compositesb.2025.112724","url":null,"abstract":"<div><div>This study developed an environmentally friendly engineered cementitious composite (ECC) reinforced with aramid nanofibers (ANFs) derived from recycled aramid fibers. ANFs were incorporated into ECC containing high-volume fly ash to improve their strength and ductility. Results showed that adding 0.05 wt % ANFs increased the compressive strength, tensile strength, and tensile strain of ECC by 46.71 %, 46.23 %, and 51.45 %, respectively. The mechanisms through which ANFs enhance the mechanical properties of ECC were investigated through single-fiber pull-out tests, micromechanical analysis, and microstructural analysis. ANFs contributed to filling the pores within the matrix, reducing the matrix porosity and inhibiting crack propagation, which consequently enhanced the compressive properties of ECC. Furthermore, ANFs significantly narrowed the interfacial transition zone (ITZ) at the fiber/matrix interface, thereby improving the frictional bond strength and pull-out energy, ultimately enhancing the tensile ductility of ECC. This study demonstrates the potential of ANFs-reinforced ECC as a sustainable and high-performance material.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"305 ","pages":"Article 112724"},"PeriodicalIF":12.7,"publicationDate":"2025-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144298241","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Enhanced ablation resistance and mechanical properties of CMP/C-HfC composites contributed by dual-skeleton reinforcement and coating protection 双骨架增强和涂层保护增强了CMP/C-HfC复合材料的抗烧蚀性能和力学性能

IF 12.7 1区材料科学

Composites Part B: Engineering Pub Date : 2025-06-15 DOI: 10.1016/j.compositesb.2025.112723

Huafeng Quan , Wei Li , Dong Huang , Woqian Gao , Shanying Sui , Yuefeng Zhang , Hua Liu , Ziwen Gu , Zhen Fan , Jinshui Liu , Chong Ye

{"title":"Enhanced ablation resistance and mechanical properties of CMP/C-HfC composites contributed by dual-skeleton reinforcement and coating protection","authors":"Huafeng Quan , Wei Li , Dong Huang , Woqian Gao , Shanying Sui , Yuefeng Zhang , Hua Liu , Ziwen Gu , Zhen Fan , Jinshui Liu , Chong Ye","doi":"10.1016/j.compositesb.2025.112723","DOIUrl":"10.1016/j.compositesb.2025.112723","url":null,"abstract":"<div><div>High-thermal-conductivity mesophase pitch-based carbon fiber reinforced carbon (HTC-C<sub>MP</sub>/C) composites encounter severe challenges with intrinsic oxidation and thermal ablation at ultra-high temperature, thus enhancing their thermal protection performance is crucial for stable operation. In this study, a dual-skeleton reinforced C<sub>MP</sub>/C-HfC composites were fabricated via reactive melt infiltration, and the ZrC/SiC@C<sub>MP</sub>/C-HfC composites were simultaneously prepared based on a coating-matrix integration strategy. The results show that the prepared C<sub>MP</sub>/C-HfC composites exhibit flexural strengths of <span><math><mrow><msub><mi>σ</mi><mn>0.5</mn></msub></mrow></math></span> = 169.03 MPa and <span><math><mrow><msub><mi>σ</mi><mn>1.0</mn></msub></mrow></math></span> = 247.15 MPa, representing 52.8 % and 63.04 % improvements over C<sub>MP</sub>/C composites, respectively. The mass ablation rate and linear ablation rate are 0.367 mg s<sup>−1</sup> and -1.167 μm s<sup>−1</sup>, showing 86.1 % and 107.5 % reductions compared to C<sub>MP</sub>/C composites. Moreover, the ZrC/SiC coating further effectively mitigates ablation-induced powdering and spalling in C<sub>MP</sub>/C-HfC composites while enhancing both thermal conductivity and flexural mechanical properties. This balanced enhancement of mechanical-thermal-ablative protection performances relies on the synergistic effects of the dual-skeleton structure combining continuous HfC framework and HTC-C<sub>MP</sub>/C skeleton, and effective thermal protection of the coating system. This work provides novel insights and valuable references for thermal protection design in C<sub>MP</sub>/C composites.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"305 ","pages":"Article 112723"},"PeriodicalIF":12.7,"publicationDate":"2025-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144314367","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Residual burst pressure prediction of COPVs after long-term seawater immersion subjected to internal pressure 内压作用下copv长期海水浸泡后残余破裂压力预测

IF 12.7 1区材料科学

Composites Part B: Engineering Pub Date : 2025-06-15 DOI: 10.1016/j.compositesb.2025.112725

Yifan Li , Huiming Ding , Wenzhu Peng , Zhengli Hua , Jinyang Zheng

{"title":"Residual burst pressure prediction of COPVs after long-term seawater immersion subjected to internal pressure","authors":"Yifan Li , Huiming Ding , Wenzhu Peng , Zhengli Hua , Jinyang Zheng","doi":"10.1016/j.compositesb.2025.112725","DOIUrl":"10.1016/j.compositesb.2025.112725","url":null,"abstract":"<div><div>Composite overwrapped pressure vessels (COPVs) play a vital role in the development of lightweight energy equipment. Once deployed in seawater environments, their load-bearing performance inevitably deteriorates. Currently, most existing researches focus on the degradation of mechanical properties of composite laminates, while limited research has been conducted specifically on COPVs. In this paper, both experimental and numerical methods were conducted to evaluate the load-bearing performance and damage evolution process of COPVs after seawater immersion. Hydraulic burst test results indicated that the burst pressure of COPVs decreased by 10 % after immersion in artificial seawater at 60 °C for 200 days. As immersion time increased, the adhesion between fibers and matrix weakened, leading to fiber scattering. Additionally, the simulation results demonstrated high reliability in predicting the moisture absorption process and burst pressure. The residual burst pressure after long-term seawater immersion was predicted by the validated numerical method combined with the Arrhenius theory. The damage analysis results showed that moisture primarily reduced the burst pressure by exacerbating fiber tensile damage and reducing the initial internal pressure of matrix tensile damage. Due to the moisture gradient along the thickness of the winding layers during the moisture absorption process, the initial location of fiber and matrix damage shifted from the inner to the outer layers. Once this process reached saturation, the initial locations returned to the inner layer. This method provides a powerful tool for the design and burst pressure prediction of COPVs in marine environments.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"305 ","pages":"Article 112725"},"PeriodicalIF":12.7,"publicationDate":"2025-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144314366","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Enhanced impregnation quality, interfacial bonding, and mechanical performance of cementitious mineral-impregnated carbon fiber reinforcements through tailored fiber sizing 通过定制纤维浆料增强胶凝矿物浸渍碳纤维增强材料的浸渍质量、界面粘合和机械性能

IF 12.7 1区材料科学

Composites Part B: Engineering Pub Date : 2025-06-15 DOI: 10.1016/j.compositesb.2025.112707

Jitong Zhao, Phan van Tai, Ali Bashiri Rezaie, Borong Fan, Marco Liebscher, Viktor Mechtcherine

{"title":"Enhanced impregnation quality, interfacial bonding, and mechanical performance of cementitious mineral-impregnated carbon fiber reinforcements through tailored fiber sizing","authors":"Jitong Zhao, Phan van Tai, Ali Bashiri Rezaie, Borong Fan, Marco Liebscher, Viktor Mechtcherine","doi":"10.1016/j.compositesb.2025.112707","DOIUrl":"10.1016/j.compositesb.2025.112707","url":null,"abstract":"<div><div>The rising demand for sustainable and high-performance materials in construction has driven the advancement of mineral-impregnated carbon fiber composites, offering an innovative alternative to traditional fiber-reinforced polymer systems. This study evaluates the role of fiber sizing agents—thermoplastic, epoxy, and vinyl ester—on the interfacial properties, impregnation efficiency, and mechanical performance of cement based mineral-impregnated carbon fibers. Using an automated pultrusion process, carbon rovings were impregnated with a cementitious matrix and analyzed through multiscale characterization techniques, including wettability assessments, interfacial shear strength measurements, morphological analysis, and comprehensive mechanical testing. Vinyl ester-sized fibers exhibited superior wettability with water and cementitious materials, along with enhanced impregnation efficiency, resulting in a 62 % improvement in flexural strength and a 14 % increase in tensile strength compared to unsized fibers. In contrast, unsized fibers demonstrated limited wettability, higher porosity, and weak interfacial adhesion, leading to lower mechanical performance and greater variability. Thermoplastic- and epoxy-sized fibers produced intermediate results, highlighting the importance of optimized sizing formulations. Statistical modeling using Weibull analysis confirmed the enhanced reliability and consistency of mineral-impregnated, differently sized carbon fibers. This work underscores the pivotal role of fiber sizing in improving the performance and scalability of mineral-impregnated carbon fibers, establishing a foundation for the development of sustainable, high-performance materials for modern construction applications.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"305 ","pages":"Article 112707"},"PeriodicalIF":12.7,"publicationDate":"2025-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144480195","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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 samarium tellurate dispersion in a graphene matrix: Interfacial engineering of a functional nanocomposite for the enhanced electrochemical sensing of clothianidin 碲酸钐在石墨烯基体中的分散：用于增强噻脲电化学传感的功能纳米复合材料的界面工程

IF 12.7 1区材料科学

Composites Part B: Engineering Pub Date : 2025-06-13 DOI: 10.1016/j.compositesb.2025.112719

Natarajan Karikalan , Annamalai Yamuna , Tae Yoon Lee

{"title":"A samarium tellurate dispersion in a graphene matrix: Interfacial engineering of a functional nanocomposite for the enhanced electrochemical sensing of clothianidin","authors":"Natarajan Karikalan , Annamalai Yamuna , Tae Yoon Lee","doi":"10.1016/j.compositesb.2025.112719","DOIUrl":"10.1016/j.compositesb.2025.112719","url":null,"abstract":"<div><div>The impact of nanoparticle's dispersion within a specified matrix governs the functionality of the resulting nanocomposite; however, the interfacial properties between the nanoparticles and matrix components can also play a role but have not been sufficiently emphasized. Therefore, we explored a fully functional interface between samarium tellurate (STO) and laser-induced graphene (LIG) utilizing a method that effectively dispersed STO within the LIG matrix via interfacial engineering. This STO–LIG nanocomposite was applied to enhance the electrochemical detection of clothianidin (CLN), which is a neonicotinoid often used in pest control with persistent adverse effects on non-target organisms and pollinators. However, previous nanocomposite-modified electrodes for detecting CLN did not meet practical requirements and were not evaluated for monitoring soil. In the designed nanocomposite, STO provided highly selective adsorptive sites for CLN adsorption, while LIG offered robust electronic conductivity. To optimize the activity, the composite interfaces were engineered using a bottom-up assembly strategy with a precipitation-cum-deposition method. Comprehensive assessments revealed that STO was effectively dispersed through the gradual chemisorption of STO onto LIG via the C–O–Te(Sm) bond, a newly discovered active site. Owing to this remarkable active site, the STO–LIG nanocomposite exhibited high sensitivity (1.33 μA μM<sup>−1</sup> cm<sup>−2</sup>) and selectivity (>95 %) in detecting CLN in soil and water samples. Overall, this study provides insights into the design and formation of a nanocomposite with an effective interface and good charge transfer characteristics.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"305 ","pages":"Article 112719"},"PeriodicalIF":12.7,"publicationDate":"2025-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144288716","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

3D-architected carbon microtubule aerogel based phase change composite for multi-field-responsive high-efficiency energy conversion 三维结构碳微管气凝胶相变复合材料的多场响应高效能量转换

IF 12.7 1区材料科学

Composites Part B: Engineering Pub Date : 2025-06-13 DOI: 10.1016/j.compositesb.2025.112721

Shaokun Song , Runze Wang , Linda Lv , Wangting Zhu , Rui Feng , Lijie Dong

{"title":"3D-architected carbon microtubule aerogel based phase change composite for multi-field-responsive high-efficiency energy conversion","authors":"Shaokun Song , Runze Wang , Linda Lv , Wangting Zhu , Rui Feng , Lijie Dong","doi":"10.1016/j.compositesb.2025.112721","DOIUrl":"10.1016/j.compositesb.2025.112721","url":null,"abstract":"<div><div>Phase change materials (PCMs) are pivotal for advanced thermal energy management and energy utilization systems, yet simultaneously balancing high latent heat, enhanced thermal conductivity, and multi-field-responsive thermal energy conversion capability in composite PCMs remains challenging. This study pioneers a carbon microtubule aerogel (CMA)-based composite PCM (CMAPCM) engineered from cobalt nanocatalyzed carbonized kapok fibers (CKF@CoNP), demonstrating unprecedented thermophysical performance. The hierarchically structured CKF@CoNP framework-featuring 3D interconnected carbon microtubules and catalytic CoNP sites-enables the synergistic enhancement in energy density, photon/electron transport, and multi-field responsiveness for the novel CMAPCM. The optimized CMAPCM-10/20/30 variants exhibit record high specific latent heats of 206.7–196.8 J/g (vs. 194.1 J/g for pristine PCM), alongside tunable thermal conductivity (0.66–0.94 W/m·K) with CMA content below 1.2 wt%. The highlighted CMAPCM-20 as the optimal candidate, exhibits solar-thermal conversion efficiencies of 0.73, 0.91, and 0.97 under solar intensities of 0.7, 1.0, and 1.4 sun, respectively, coupled with a solar-thermoelectric conversion efficiency of 0.51 when paired with thermoelectric generators. Additionally, it achieves electrothermal conversion efficiencies of 0.61, 0.91, and 0.94 at 0.5, 1.0, and 1.5 W inputs. The composite maintains its latent heat capacity well after 2000 thermal cycles, confirming structural stability. By unifying the ultrahigh latent heat capacity, tunable thermal conductivity, and multi-field energy conversion in a single material system, this work establishes a versatile platform for solar-thermal systems, off-peak electricity storage, smart thermal management, and infrared/electromagnetic compatibility applications.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"305 ","pages":"Article 112721"},"PeriodicalIF":12.7,"publicationDate":"2025-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144288717","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Modelling fatigue damage in unidirectional fibre composites using a hybrid analytical–numerical approach 单向纤维复合材料疲劳损伤的混合分析-数值模拟方法

IF 12.7 1区材料科学

Composites Part B: Engineering Pub Date : 2025-06-13 DOI: 10.1016/j.compositesb.2025.112667

Alexander Seidel , Bent F. Sørensen , Klaus Drechsler

{"title":"Modelling fatigue damage in unidirectional fibre composites using a hybrid analytical–numerical approach","authors":"Alexander Seidel , Bent F. Sørensen , Klaus Drechsler","doi":"10.1016/j.compositesb.2025.112667","DOIUrl":"10.1016/j.compositesb.2025.112667","url":null,"abstract":"<div><div>A hybrid analytical–numerical model at the microscale is developed to describe the formation and growth of fatigue damage zones in unidirectional fibre composites. Conceptually, the model builds upon the phenomenon of fatigue being mainly driven by the mutual influence of fibre breaks and respective fibre–matrix debond cracks occurring under cyclic tension-tension loading. The model consists of three steps. First, analytical relations are used to calculate the cycle-dependent material parameters and the debond crack length for a given broken fibre. Next, a numerical finite element simulation of a two-fibre model composite is utilised to determine the stress at the surface of a neighbouring fibre for varying load cycles. Last, a method called <em>Procedural Domain Extension</em> is introduced, utilising a Weibull distribution of fibre strengths to adaptively and computationally efficiently generate a growing fatigue damage zone. The model can qualitatively and quantitatively predict the formation and growth of the fatigue damage zone. Stresses in the broken and the neighbouring fibre are in good agreement with values reported in the literature. Fatigue characteristics like the fatigue damage zone growth rate or the positional distribution of the fibre breaks are in good agreement with experimental data.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"305 ","pages":"Article 112667"},"PeriodicalIF":12.7,"publicationDate":"2025-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144366562","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multiscale study on nonlinear mechanical properties of CNT-reinforced CFRTP: Comparison of reinforcing effects of CNT-grafted interphase and CNT-dispersed matrix 碳纳米管增强CFRTP非线性力学性能的多尺度研究：碳纳米管接枝界面相与碳纳米管分散基体增强效果的比较

IF 12.7 1区材料科学

Composites Part B: Engineering Pub Date : 2025-06-13 DOI: 10.1016/j.compositesb.2025.112720

Yasutomo Uetsuji , Yusei Fujiwara , Fumiya Araki , Kotomi Onishi , Koshi Iwata , Yuki Murakami , Chao Luo , Kazuto Tanaka

{"title":"Multiscale study on nonlinear mechanical properties of CNT-reinforced CFRTP: Comparison of reinforcing effects of CNT-grafted interphase and CNT-dispersed matrix","authors":"Yasutomo Uetsuji , Yusei Fujiwara , Fumiya Araki , Kotomi Onishi , Koshi Iwata , Yuki Murakami , Chao Luo , Kazuto Tanaka","doi":"10.1016/j.compositesb.2025.112720","DOIUrl":"10.1016/j.compositesb.2025.112720","url":null,"abstract":"<div><div>The effect of carbon nanotube (CNT) as a secondary reinforcement material for carbon fiber reinforced thermoplastics (CFRTP), which are used in a wide range of fields such as automobiles and aircrafts, was examined. An asymptotic homogenization theory was adopted for scale coupling, and a hierarchical multiscale finite element analysis (FEA) scheme was constructed. First, single fiber pull-out tests were performed on CF with CNTs grafted on its surface by chemical vapor deposition, and the FEA model of CNT-grafted CF was verified. Next, based on the multiscale FEA, the mechanical properties of the case where the interfacial phase between the CF and the matrix was reinforced by CNTs grafting and the case where CNTs were dispersed in the matrix were systematically compared. As a result, the computation revealed that the CNT-grafted interfacial phase was effective for the transverse fiber and out-of-plane shear properties when the CNT content was 2.0 vol% or less. It also revealed that the CNT-dispersed matrix was effective for the in-plane and out-of-plane shear properties when the CNT content was 3.0 vol% or more, providing an important design guideline for CNT-reinforced CFRTP.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"305 ","pages":"Article 112720"},"PeriodicalIF":12.7,"publicationDate":"2025-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144307274","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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