Composites Part B: Engineering最新文献

{"title":"Fabrication of polypropylene/carbon fiber/carbon black composite foam bonded with continuous carbon fiber reinforced polypropylene prepregs via high-pressure foam injection molding","authors":"Dongxu Tian,&nbsp;Junji Hou,&nbsp;Jinkai Liang,&nbsp;Jingbo Chen","doi":"10.1016/j.compositesb.2024.112006","DOIUrl":"10.1016/j.compositesb.2024.112006","url":null,"abstract":"<div><div>The fabrication of polymer composite foams with several functions offers various advantages. Herein, we reported a highly efficient and mass-produced method for preparing polypropylene/carbon fiber/carbon black (PP/CF/CB) composite foams bonded with continuous CF reinforced PP prepregs. CFs were uniformly dispersed in PP via melt blending, but some agglomerations of CBs were observed owing to their little size. Compared with pure PP, the introduction of CB improved the thermal stability and flame retardance of composites. Owing to the homogeneity of polymer between composites and prepregs, they were well bonded by injection molding. The tensile strength of the samples bonded with prepregs was improved by 158.3–257.7 % for different filler contents. As CF and CB played the role of heterogeneous nucleation, and the high-pressure foam injection molding could easily tailor cellular structure by adjusting the holding time and mold temperature, composite foams bonded with two prepregs and with desired cells were successfully prepared. The injected foams with two prepregs had an enhanced electromagnetic interference shielding performance, which was 65.4 dB when the content was 10 wt% and 15 wt% for CF and CB, respectively. This work provides a universal approach for efficient and large-scale preparation of lightweight and multifunctional polymer composite foams.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"291 ","pages":"Article 112006"},"PeriodicalIF":12.7,"publicationDate":"2024-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142700000","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}

{"title":"Mechanical properties of carbon fiber composites with various wear characteristics during knitting process","authors":"Zhaoling Sun ,&nbsp;Peixiao Zheng ,&nbsp;Chaoyu Chen ,&nbsp;Zhijia Dong ,&nbsp;Fengxiang Chen ,&nbsp;Pibo Ma","doi":"10.1016/j.compositesb.2024.112010","DOIUrl":"10.1016/j.compositesb.2024.112010","url":null,"abstract":"<div><div>The inherent brittleness of carbon fiber (CF) presents a significant challenge during the knitting process, as the yarn is prone to breakage under bending stress, resulting in the occurrence of hairiness that directly impacts the mechanical properties of the composites. Therefore, it is imperative to examine the frictional and wear characteristics of CF bundles in order to minimize potential damage incurred during the weaving process and enhance the overall properties of composites. This study initially modified the CF through flexible coating with polydimethylsiloxane (PDMS), followed by preparing a knitted preform. Subsequently, an investigation was conducted to assess the impact of contact area and sinking depth on CF damage. Furthermore, the finite element method was employed to simulate stress distribution during the loop formation of CF. Finally, the impact of CF wear on the mechanical characteristics of the composite was examined. After heat treatment and low damage treatment, the tensile strength and bending strength of CF@PDMS/TD-C increased by 16.7 % and 23.64 %, respectively. The energy absorption performance was measured at 17.79 J, 27.84 J, 37.77 J, and 42.34 J for impact energies of 20 J, 30 J, 40 J, and 50 J, respectively. These findings establish an experimental and theoretical foundation for mitigating damage during the weaving process.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"291 ","pages":"Article 112010"},"PeriodicalIF":12.7,"publicationDate":"2024-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142719967","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}

{"title":"Boosted triboelectric performance in stretchable nanogenerators via 2D MXene-Driven electron accumulation and LiNbO₃-assisted charge transfer","authors":"Biswajit Mahanty ,&nbsp;Sujoy Kumar Ghosh ,&nbsp;Dong-Weon Lee","doi":"10.1016/j.compositesb.2024.111995","DOIUrl":"10.1016/j.compositesb.2024.111995","url":null,"abstract":"<div><div>The development of piezoelectrically enhanced triboelectric hybrid nanogenerators (PET-HNGs) has garnered considerable attention for their potential in energy harvesting. However, their performance in stretchable applications across diverse environments, such as air and water, remains limited due to the lack of high-performance, stretchable material compositions and a comprehensive understanding of the charge transfer mechanism involved. To address these challenges, we have designed a high-performance, stretchable nano-/micro-composite film by embedding 2D MXene nanosheets and piezoelectric LiNbO₃ microparticles into an Ecoflex polymer matrix. Quantum mechanical calculations revealed that MXene nanosheets significantly increase electron density near the Fermi level, while LiNbO₃ microparticles enhance electron transfer during contact electrification with polydimethylsiloxane (PDMS). This synergistic effect resulted in a substantial enhancement of the triboelectric energy harvesting performance, with the composite film exhibiting a 355 % increase in voltage, a 324 % increase in current, and a 100 % boost in power output density compared to systems using pure Ecoflex based TENGs. The fabricated PET-HNG demonstrated remarkable output metrics, including a voltage of 455 V, current of 140 μA, power output density of 15.6 W m⁻², and an energy conversion efficiency of 78.5 %, all while maintaining exceptional performance stability even under mechanical stretching.</div><div>This stretchable nanogenerator shows great potential as a self-powered wearable sensor for real-time biomechanical monitoring in various environments, including air and underwater. This innovation paves the way for the development of next-generation wearable electronics and energy harvesting devices.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"291 ","pages":"Article 111995"},"PeriodicalIF":12.7,"publicationDate":"2024-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142719854","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}

{"title":"Ultratough nacre-inspired soybean protein isolate/graphene nanocomposite with flame-retardant, thermal conductivity and recyclable","authors":"Tao Liu ,&nbsp;Zheng Liu ,&nbsp;Weidong Gu ,&nbsp;Jieyu Zhang ,&nbsp;Shanshan Gong ,&nbsp;Jianzhang Li","doi":"10.1016/j.compositesb.2024.111998","DOIUrl":"10.1016/j.compositesb.2024.111998","url":null,"abstract":"<div><div>Bioplastics synthesized from soybean protein isolate (SPI) and graphite are promising alternatives but often suffer from their inability of mass production, high-cost, poor mechanical robustness, and even flammability. Herein, the scalable production of nacre-like nanocomposite by using the ball-milling spray method of graphene/SPI materials is demonstrated. The dynamic non-covalent was employed to facilitate the toughening effect of inorganic nano-fillers, while simultaneously utilizing dynamic covalent supramolecular interactions to realize plasticizer reinforcement materials. The dissipation of stress is facilitated through a combination of covalent and non-covalent interactions, thereby enhancing the interface interaction and resulting in materials with superior mechanical properties. The interfacial interaction between the SPI and the nano-reinforce confer exceptional mechanical properties to the bioplastic, achieving an excellent tensile strength 11.01 ± 0.81 MPa and fracture toughness14.52 ± 0.71 MJ/m³, which are 3.4 and 3.5 times, respectively, those of neat SPI. The recycling for highly reinforced nacre-mimetic SPI-based nanocomposites is critically enabled by the dynamic bond and improves the sustainability of bioinspired nanocomposites in cyclic economy. In addition, the SPI composite has exceptional flame retardancy, thermal conductivity, and electromagnetic shielding properties. This study provides new insights into the design of reliable and environmentally friendly biomaterials, which is significant for the development of sustainable development resources.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"291 ","pages":"Article 111998"},"PeriodicalIF":12.7,"publicationDate":"2024-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142743648","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}

{"title":"Additive manufacturing of continuous carbon fiber/epoxy composites with structured core-shell towpreg: Methods, characterization, and mechanics","authors":"Kaiyue Deng ,&nbsp;Md Habib Ullah Khan ,&nbsp;Soyeon Park ,&nbsp;Dae Han Sung ,&nbsp;Kelvin Fu","doi":"10.1016/j.compositesb.2024.112001","DOIUrl":"10.1016/j.compositesb.2024.112001","url":null,"abstract":"<div><div>Continuous carbon fiber thermoset composites are acclaimed for their exceptional structural integrity, environmental durability, and extended service life, yet their additive manufacturing (AM) has been relatively underexplored. This study investigates the mechanical performances of 3D-printed continuous carbon fiber/epoxy composites fabricated using the Tow-Preg Cladding (TPC) method. This novel approach integrates in-situ epoxy impregnation, dual-cure cladding, and tow-preg deposition to enhance the producibility of such composites via AM. The resulting composite showcases a fiber volume fraction exceeding 50 %, offering remarkable mechanical properties. We report a tensile strength of 1295.72 MPa, a compressive strength of 544.13 MPa, a flexural strength of 659.30 MPa, and an interlaminar shear strength of 50.87 MPa. Furthermore, the tensile strength and modulus achieved 41.5 % and 58.1 % of the values predicted by a modified rule of mixture equation, indicating competitive performance among various AM systems for continuous fiber composites. By addressing challenges in uniform fiber distribution and optimizing composite morphology, this research marks a significant advancement in AM for thermally curable thermoset composites. The comparative analysis of diverse AM techniques positions our TPC approach as a promising solution in the field, potentially transforming future high-performance composite fabrication.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"291 ","pages":"Article 112001"},"PeriodicalIF":12.7,"publicationDate":"2024-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142743658","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}

{"title":"Flame-retardant and thermal insulating biomass aerogel with super-elasticity","authors":"Ting Wang ,&nbsp;Cheng Xu Xu ,&nbsp;Ning Yu ,&nbsp;Wen-Li An ,&nbsp;Wei luo ,&nbsp;Hai-Bo Zhao ,&nbsp;Fu-Rong Zeng ,&nbsp;Ming-Jun Chen","doi":"10.1016/j.compositesb.2024.112004","DOIUrl":"10.1016/j.compositesb.2024.112004","url":null,"abstract":"<div><div>Biomass aerogels possessing both resilience and flame retardance exhibit great potential as alternatives to fossil-based thermal insulators. Nevertheless, the functional applications of elastic biomass aerogels are impeded by their poor resilience persistence, especially at low temperatures. Herein, a synergetic strategy was proposed for designing biomass aerogels with exceptional elasticity across a broad temperature range (from 150 °C to −78 °C), by strategically manipulating their microstructure and implementing a chemically cross-linked network. The resultant aerogels suffered from slight plastic deformation of only 6.1 % even after 1000 loading-unloading cycles at a strain of 60 %, manifesting super-elastic performance. Additionally, the structure and resilience of aerogel can be well maintained even under frigid temperatures (−78 °C). Because firmly cross-linked networks and loosely packed microstructures with elongated cell walls were constructed to minimize plastic deformation and bending stress, thereby suppressing structural destruction. Furthermore, the resulting biomass aerogel exhibited a remarkable combination of advantageous properties including lightweight, flame retardance (limiting oxygen index of 29 %), thermal insulation (32.8 mW m⁻¹ K⁻¹) and infrared stealth. This research offers new insights into the design of elastic biomass aerogels with exceptional overall performance.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"291 ","pages":"Article 112004"},"PeriodicalIF":12.7,"publicationDate":"2024-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142699996","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}

{"title":"Recovered graphene-hydrogel nanocomposites for multi-modal human motion recognition via optimized triboelectrification and machine learning","authors":"Thien Trung Luu ,&nbsp;Hai Anh Thi Le ,&nbsp;Yoonsang Ra ,&nbsp;Teklebrahan Gebrekrstos Weldemhret ,&nbsp;Hwiyoung Kim ,&nbsp;Kyungwho Choi ,&nbsp;Dongwhi Choi ,&nbsp;Dukhyun Choi ,&nbsp;Yong Tae Park","doi":"10.1016/j.compositesb.2024.111997","DOIUrl":"10.1016/j.compositesb.2024.111997","url":null,"abstract":"<div><div>Hydrogels have extensive applications in portable, flexible, wearable, and self-powered electronic devices based on triboelectric nanogenerators (TENGs). An important issue with hydrogels is their tendency to dehydrate over time, which leads to a decline in both ionic conductivity and mechanical flexibility. Furthermore, the current techniques used to produce these hydrogels mostly rely on the freeze–thaw process, which has limited ability to modify the polymer conformation. Herein, a novel water-assisted recovered hydrogel is proposed using a simple strategy to prepare high-performance hydrogel-based TENGs by optimizing the cross-linking and crystalline domains. Synthesis of the electrostatic electrode in the TENG involved the incorporation of polyethylene oxide (PEO) into a polyvinyl alcohol (PVA) hydrogel network via cross-linking. Graphene nanoplatelets (GNP) were added to precisely tune the electrical conductivity. GNP constructs the backbone structures in the hydrogel and enhances the charge transport capacity. Electrical conductivity is changed by the GNP concentration and thus, electrical output of the hydrogel can be facilely controlled. The water reabsorption increased density and crystallinity of the cross-linking and allowed the hydrogel to show superior performance compared to the original one. The 7th recovery hydrogel produced around 594 V, 40 μA, and 32 nC. The 7th recovery hydrogel had exceptional endurance, with the capacity to withstand over 16,000 cycles of contact separation. Moreover, it could be stretched up to 541 % of its original length and improved by almost twice as much as that without the recovery process. By combining multi-modal graphene-based TENG sensors with machine learning, a state-of-the-art behavioral monitoring system was created that could reliably detect tapping fingers with an average accuracy rate of 95 %. The findings of this research will pave the way for new approaches to the development of autonomous motion sensors and flexible renewable energy sources.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"291 ","pages":"Article 111997"},"PeriodicalIF":12.7,"publicationDate":"2024-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142743575","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}

{"title":"Transfer-learning-aided defect prediction in simply shaped CFRP specimens based on stress distribution obtained from finite element analysis and infrared stress measurement","authors":"Yuta Kojima ,&nbsp;Kenta Hirayama ,&nbsp;Katsuhiro Endo ,&nbsp;Yoshihisa Harada ,&nbsp;Mayu Muramatsu","doi":"10.1016/j.compositesb.2024.111958","DOIUrl":"10.1016/j.compositesb.2024.111958","url":null,"abstract":"<div><div>In this paper, we propose a framework of nondestructive testing for predicting the 3D structure of internal defects in carbon-fiber-reinforced plastic (CFRP) from the distribution of the sum of principal stresses on surfaces (DSPSS) through transfer learning. DSPSS is obtained from both the finite element method and infrared stress measurement results. Infrared stress measurements are based on Kelvin’s theory to convert surface temperature changes to DSPSS changes. The machine learning model used in this framework is a 3D convolutional neural network (CNN). The transfer learning method employed in this framework is as follows. First, a CNN that predicts the 3D structure of defects is trained using the DSPSS dataset by the finite element method and the 3D structure of internal defects. DSPSS is used with noise that imitates the noise generated by experimental factors such as temperature fluctuations in infrared stress measurements and differences in physical properties between the polymer resin and the carbon fiber bundle of CFRP. Next, the CNN is trained using the DSPSS dataset obtained by infrared stress measurement and the 3D structure of defects. The accuracy of the trained CNN is evaluated using DSPSS infrared stress measurements. We discuss the factors that enable us to predict the 3D defect data from the two-dimensional DSPSS using a variational autoencoder. The proposed method makes it possible to estimate internal defect information.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"291 ","pages":"Article 111958"},"PeriodicalIF":12.7,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142699995","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Corrigendum to “Effects of electron beam and atomic oxygen irradiation on hypervelocity - Impact tested / polyimide coated carbon fiber-reinforced plates” [Compos Part B: Eng 288 (2025) 111877]","authors":"Masahiro Nishida,&nbsp;Daichi Kimura,&nbsp;Kyouko Ashida,&nbsp;Naomasa Furuta,&nbsp;Yoshiaki Iwase,&nbsp;Yuichi Ishida","doi":"10.1016/j.compositesb.2024.111979","DOIUrl":"10.1016/j.compositesb.2024.111979","url":null,"abstract":"","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"290 ","pages":"Article 111979"},"PeriodicalIF":12.7,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142747586","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}

{"title":"Controllable porous structure polylactide self-reinforced composites with a large processing temperature window","authors":"Renzhi Li,&nbsp;Yangyang Feng,&nbsp;Song Zhang,&nbsp;Constantinos Soutis,&nbsp;R. Hugh Gong","doi":"10.1016/j.compositesb.2024.111996","DOIUrl":"10.1016/j.compositesb.2024.111996","url":null,"abstract":"<div><div>Polylactic acid (PLA) self-reinforced composites (SRCs) are potential alternatives to non-biodegradable plastic composites, but its narrow processing temperature window makes it difficult to manufacture. In this paper, PLA-SRCs with a processing temperature window of more than 50 °C were prepared by stereocomplexation of PLA. In addition, a novel and easy-to-handle solvent-induced interfacial modification of the fibres was developed in order to enhance the mechanical properties of PLA-SRCs. The method controllably generates a porous structure on the fibre surface, which greatly strengthens the interfacial bonding of the composites. After interfacial modification, the interfacial shear strength of PLA-SRCs was increased by almost 40 % while its tensile strength improved by more than 30 %, making this eco-friendly polymer system attractive to many modern industrial applications.</div></div>","PeriodicalId":10660,"journal":{"name":"Composites Part B: Engineering","volume":"291 ","pages":"Article 111996"},"PeriodicalIF":12.7,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142699998","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}