Composites Science and Technology最新文献_第5页

Anti-ballistic properties of hybrid UHMWPE fiber-reinforced composite armour 混合超高分子量聚乙烯纤维增强复合装甲的防弹性能

IF 8.3 1区材料科学

Composites Science and Technology Pub Date : 2024-10-28 DOI: 10.1016/j.compscitech.2024.110941

Jun Lin , Yongqiang Li , sheng Liu , Hualin Fan

{"title":"Anti-ballistic properties of hybrid UHMWPE fiber-reinforced composite armour","authors":"Jun Lin , Yongqiang Li , sheng Liu , Hualin Fan","doi":"10.1016/j.compscitech.2024.110941","DOIUrl":"10.1016/j.compscitech.2024.110941","url":null,"abstract":"<div><div>The ballistic performance of three hybrid composite plates, including ultra-high molecular weight polyethylene (UHMWPE), UHMWPE/Aramid, and UHMWPE/CFRP with similar surface density, was studied in the paper. These plates were tested under the impact of 7.62×25 mm full metal jacket (FMJ) bullets, with the dynamic back deformation (BFD) captured using Digital Image Correlation (DIC) technology. The effects of material combinations and striking faces on the dynamic response were discussed. The deformation and penetration mechanisms were analyzed using optical microscopy and micro-CT tomography. The results indicated that the UHMWPE/CFRP plate exhibited the lowest BFD, followed by UHMWPE and the UHMWPE/Aramid plate. When UHMWPE severed as the striking face, the fibers underwent through-thickness compression, which transitioned to in-plane tension and led to an elongated fracture of yarns. Similarly, Aramid fibers also experienced tensile fractures under similar conditions. In contrast, carbon fibers had brittle shear fractures when CFRP was the striking face. Additionally, the “V-shaped” cone traveling hinge velocity was calculated using DIC results, and the effects of the plate bending stiffness and wave impedance on protective performance were discussed. The findings emphasize the importance of an optimal material configuration to mitigate the propagation of compressive waves in the thickness direction and enhance bending stiffness, which is crucial for improving protection within ballistic limits.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"259 ","pages":"Article 110941"},"PeriodicalIF":8.3,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142572776","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

Array infrared thermography for visualization of defects in bonded fiber reinforced polymer joints 阵列红外热成像技术用于观察粘接纤维增强聚合物接头中的缺陷

IF 8.3 1区材料科学

Composites Science and Technology Pub Date : 2024-10-28 DOI: 10.1016/j.compscitech.2024.110930

Xingxing Zou , Mengyao Li , Hao Xu , Xiaofeng Lu

{"title":"Array infrared thermography for visualization of defects in bonded fiber reinforced polymer joints","authors":"Xingxing Zou , Mengyao Li , Hao Xu , Xiaofeng Lu","doi":"10.1016/j.compscitech.2024.110930","DOIUrl":"10.1016/j.compscitech.2024.110930","url":null,"abstract":"<div><div>Fiber reinforced polymer (FRP) is widely used in new and existing structures, however, interfacial defects in the bonded joints pose a significant threat to structural integrity. Therefore, detection of interfacial defects is imperative for ensuring structural safety. This study proposes array infrared thermography (IRT) as a novel non-destructive evaluation method to visualize interfacial defects. Array IRT provides uniform heat excitation within the spatial domain, which overcomes the problem of heat concentration by conventional IRT. Forty-five bonded FRP plate specimens were tested using array IRT, results of which show that interfacial defects can be accurately detected within (8<em>h</em> + 8) s (where <em>h</em> is the thickness of the upper layer of FRP in mm). Array IRT achieves high accuracy in detecting shapes, particularly sharp corners of defects. A pre-processing method was proposed to eliminate the twisted angles of thermal camera and to more clearly show the defects in the thermograms. A database containing tested thermograms and the corresponding predefined defects was established. Intelligent algorithms - UNet, Deeplabv3, and YOLOv8 - were used to segment the defected regions for array IRT analysis, results of which show a precision of 95.8 %, 94.4 %, and 94.1 %, respectively.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"259 ","pages":"Article 110930"},"PeriodicalIF":8.3,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142553524","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

Efficient property-oriented design of composite layups via controllable latent features using generative VAE 利用生成式 VAE，通过可控潜特征高效设计以属性为导向的复合材料铺层

IF 8.3 1区材料科学

Composites Science and Technology Pub Date : 2024-10-28 DOI: 10.1016/j.compscitech.2024.110936

Huaixiang Sun , Xiaodong Wang , Jiaxue Li, Zengshan Li, Zhidong Guan

{"title":"Efficient property-oriented design of composite layups via controllable latent features using generative VAE","authors":"Huaixiang Sun , Xiaodong Wang , Jiaxue Li, Zengshan Li, Zhidong Guan","doi":"10.1016/j.compscitech.2024.110936","DOIUrl":"10.1016/j.compscitech.2024.110936","url":null,"abstract":"<div><div>Fiber-reinforced composites provide substantial tailoring potential, while the extensive parameters and complex coupling mechanisms pose formidable challenges to layup designs. This paper presents an efficient inverse design framework for composite layups utilizing a variational autoencoder (VAE), which is applicable to non-conventional laminates. By leveraging the VAE's exceptional feature extraction and generative capabilities, the decoder rapidly produces layups with desired properties through controllable feature vectors. Based on the stacking characteristics of layups, multi-scale one-dimensional convolutions precisely extract sequence features relevant to mechanical properties and specific manufacturing constraints. A customized loss function is formulated to constrain the latent features, while addressing the non-uniqueness problem for layups with certain mechanical properties. The developed property-oriented VAE can generate 100,000 layups in seconds, achieving an average success rate of 66.9 % under comprehensive in-plane and bending stiffness design, and remains effective for 100-ply thick laminate. For comparison, the VAE model outperforms the genetic algorithm and the logic-based method in reinforced panel designs, reducing the retrieval error by 46.4 % and 38.1 %, respectively. The proposed approach demonstrates flexible and efficient design advantages using generative machine learning models, and is easily extendable to other inverse design scenarios.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"259 ","pages":"Article 110936"},"PeriodicalIF":8.3,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142578493","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

Covalently engineering novel sandwich-like rGO@POSS nanofillers for high-performance dielectric energy storage of PVDF film capacitor 共价工程化新型夹层状 rGO@POSS 纳米填料，用于 PVDF 薄膜电容器的高性能电介质储能

IF 8.3 1区材料科学

Composites Science and Technology Pub Date : 2024-10-26 DOI: 10.1016/j.compscitech.2024.110938

Hui Liu , Mingming Ding , Xuecheng Chen , Zhaotian Ba , Zhewen Ma , Lili Ma , Xin Wen , Pingan Song , Qingquan Lei

{"title":"Covalently engineering novel sandwich-like rGO@POSS nanofillers for high-performance dielectric energy storage of PVDF film capacitor","authors":"Hui Liu , Mingming Ding , Xuecheng Chen , Zhaotian Ba , Zhewen Ma , Lili Ma , Xin Wen , Pingan Song , Qingquan Lei","doi":"10.1016/j.compscitech.2024.110938","DOIUrl":"10.1016/j.compscitech.2024.110938","url":null,"abstract":"<div><div>With the development of modern electronic and electrical industry, it is still a great challenge to develop poly(vinylidene fluoride) (PVDF) based dielectric capacitors with high energy storage capability. Herein, a novel sandwich-like nanofiller was constructed via covalently grafting polyhedral oligomeric silsesquioxane onto graphene oxide nanosheets (GO@POSS), further PVDF/rGO@POSS film were fabricated via solvent-casting and in-situ thermal reduction processes. The results indicated that the grafting of POSS promoted the uniform dispersion of nanofillers to realize strong interfacial interaction with PVDF matrix. The optimal PVDF film containing 0.75 wt% rGO@POSS (0.75PGP-60) exhibited larger dielectric constant (<em>ε</em><sub>r</sub> = 13.32) and higher breakdown strength (<em>E</em><sub>b</sub> = 339.1 MV m<sup>−1</sup>), thus resulting in synchronous improvements on energy density (<em>U</em><sub>e</sub> = 5.42 J·cm<sup>−3</sup>) and charge-discharge efficiency (<em>η</em> = 73.1 %), which increased by 95.0 % and 19.4 % compared to pure PVDF, respectively. Meanwhile, it presented excellent cycling stability with 97.6 % energy density retention after 10000<sup>th</sup> cycles. The improved energy storage capability was attributed to reasonably-designed sandwich-like nanofiller: the formation of rGO micro-capacitors raised the dielectric constant of PVDF nanocomposites, while the insulative POSS layer helped to improve its breakdown strength and decrease its dielectric loss. The current work provides a novel and efficient paradigm to design PVDF nanocomposites with promising dielectric properties and energy storage capacity, and further contributes to broadening the practical applications of advanced dielectric capacitors.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"259 ","pages":"Article 110938"},"PeriodicalIF":8.3,"publicationDate":"2024-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142553513","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 superhydrophobic Fe3O4@MSN-PDMS based composite coating with icephobicity, long-term durability and self-healing property for anti-/de-icing 一种基于 Fe3O4@MSN-PDMS 的超疏水性复合涂层，具有疏冰性、长期耐久性和自愈性，可用于防/除冰

IF 8.3 1区材料科学

Composites Science and Technology Pub Date : 2024-10-26 DOI: 10.1016/j.compscitech.2024.110937

Lechun Deng , Zongwen Wang , Junzhi Wu , Xingshi Gu , Hao Yu , Yang Li , Yaru Cao , Fa Luo , Xianhu Liu , Qiang Chen

{"title":"A superhydrophobic Fe3O4@MSN-PDMS based composite coating with icephobicity, long-term durability and self-healing property for anti-/de-icing","authors":"Lechun Deng , Zongwen Wang , Junzhi Wu , Xingshi Gu , Hao Yu , Yang Li , Yaru Cao , Fa Luo , Xianhu Liu , Qiang Chen","doi":"10.1016/j.compscitech.2024.110937","DOIUrl":"10.1016/j.compscitech.2024.110937","url":null,"abstract":"<div><div>Ice formation is a ubiquitous phenomenon in various fields and often leads to catastrophic consequences. Despite numerous anti-icing coating strategies have been exploited, there are still multiple roadblocks in the way of developing anti-icing coatings with durable and effective anti-/de-icing properties. In this work, Fe<sub>3</sub>O<sub>4</sub> was coated in-situ with mesoporous silica nanoparticle (MSN), in which a high dosage of polydimethylsiloxane (PDMS) was then loaded. As-obtained core-shelled Fe<sub>3</sub>O<sub>4</sub>@MSN-PDMS aggregates were incorporated into silicone resin to construct an NIR responsive anti-/de-icing coating via spraying method. The as-prepared coating exhibited superhydrophobicity (156.7° of water contact angle) and delayed icing time to 412 s under −20 °C. Besides, the prepared coating could heat and release PDMS to constitute a PDMS/water double-layer lubricant under NIR irradiation, significantly reducing ice adhesion strength from 90.60 kPa to 12.04 kPa. Furthermore, the prepared coating demonstrates self-healing properties and high durability, releasing PDMS stored in the coating sustainably to heal the damaged coating surface and keeping superhydrophobicity after chemical etching and mechanical erosion. Finally, the de-icing applicability of the coating was validated using a homemade rotor wing model. Such core-shelled anti-/de-icing materials would provide a theoretical basis and a brand-new design strategy for development and application of anti-/de-icing materials.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"259 ","pages":"Article 110937"},"PeriodicalIF":8.3,"publicationDate":"2024-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142553523","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

An improved automatic image labeling and classification algorithm for multi-mode damage quantification of 2.5D woven composites based on deep learning strategy 基于深度学习策略的用于 2.5D 编织复合材料多模式损伤量化的改进型自动图像标记和分类算法

IF 8.3 1区材料科学

Composites Science and Technology Pub Date : 2024-10-24 DOI: 10.1016/j.compscitech.2024.110932

Jianhua Zheng , Kun Qian , Xiaodong Liu , Zengyuan Pang , Zhengyan Yang , Jin Sun , Diantang Zhang

{"title":"An improved automatic image labeling and classification algorithm for multi-mode damage quantification of 2.5D woven composites based on deep learning strategy","authors":"Jianhua Zheng , Kun Qian , Xiaodong Liu , Zengyuan Pang , Zhengyan Yang , Jin Sun , Diantang Zhang","doi":"10.1016/j.compscitech.2024.110932","DOIUrl":"10.1016/j.compscitech.2024.110932","url":null,"abstract":"<div><div>Accurately identifying and quantifying the complex multi-mode damages in woven composites is of vital importance to evaluate the service life and improve reliability of the components. However, the current advanced methods based on the deep learning framework remain mainly the manual labeling, resulting in unclear fiber/resin interfaces, easily-overlooked microcracks, and lower efficiency. To overcome the problem, this paper proposes an improved automatic image labeling and classification algorithm based on deep learning strategy to quantify the uncertainty damages of 2.5D woven composites. In detail, the original micro-computed tomography (CT) images are automatically labeled by an image algorithm that utilizes grayscale values and image boundaries to produce image datasets. Subsequently, the DCNN model is trained using the image datasets. Then, the trained deep convolutional neural networks (DCNN) model is used to identify unseen CT images and separate the damage and different sub-phases of 2.5D woven composites. Finally, the connected component analysis is introduced to classify the global cracks at the meso-scale. The results show that the proposed automatic image labeling and classification algorithm can achieve a damage identification precision of 85.87 %, surpassing that of other models. Moreover, the multi-mode damages of 2.5D woven composites are accurately captured. In the warp direction, the bending damage accumulation predominantly manifests as interface debonding, representing 51.93 % of the damage percentage. In the weft direction, it is primarily characterized by matrix cracking, representing 60.98 % of the damage percentage. It is expected that the study can provide data support for the application of large-scale and complex structural components.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"259 ","pages":"Article 110932"},"PeriodicalIF":8.3,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142533029","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

Layer-by-layer assembling boron nitride/polyethyleneimine/MXene hierarchical sandwich structure onto basalt fibers for high-performance epoxy composites 在玄武岩纤维上逐层装配氮化硼/聚乙烯亚胺/二甲苯分层夹层结构，以制造高性能环氧树脂复合材料

IF 8.3 1区材料科学

Composites Science and Technology Pub Date : 2024-10-24 DOI: 10.1016/j.compscitech.2024.110931

Ying Yu , Shaolong Han , Haoyu Wang , Gang Wei , Zheng Gu , Ping Han

{"title":"Layer-by-layer assembling boron nitride/polyethyleneimine/MXene hierarchical sandwich structure onto basalt fibers for high-performance epoxy composites","authors":"Ying Yu , Shaolong Han , Haoyu Wang , Gang Wei , Zheng Gu , Ping Han","doi":"10.1016/j.compscitech.2024.110931","DOIUrl":"10.1016/j.compscitech.2024.110931","url":null,"abstract":"<div><div>Interfacial adhesion directly affects the mechanical properties of basalt fiber (BF)-reinforced polymer composites. To construct a more superior interphase between BFs and epoxy resin (EP) than a weak interphase of the unmodified BF/EP, we propose a hierarchical sandwich structure consisting of sodium hydroxide–activated boron nitride (BN<sub>OH</sub>), polyethyleneimine (PEI), and MXene (MX, Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub>) through facile layer-by-layer self-assembly. The fabricated BN<sub>OH</sub>/P/MX sandwich structure (P denoting “PEI”) can synergistically improve the interface adhesion by enhancing the mechanical interlocking and chemical bonding of the composites. When the composites reinforced by BF–BN<sub>OH</sub>/P/MX subject to the external loading, flexible PEI molecules allow two-dimensional (2D) rigid BN<sub>OH</sub> and MX nanosheets to slip at the interface by uncurling the molecular chains, dissipating a great amount of energy during the fracture progress. Meanwhile, the hierarchical BN<sub>OH</sub>/P/MX sandwich structure acts as an excellent interface and possesses multistage gradient modulus and wider thickness, uniformly and efficiently transferring the stress from the EP matrix to BFs. The interfacial shear strength, impact strength, and fracture toughness of BF–BN<sub>OH</sub>/P/MX-reinforced EP composite are substantially improved by 45.9 %, 60.6 %, and 148.9 %, respectively, compared with bare BF–based composites. This study can provide valuable references and inspirations for designing and constructing high-quality interfaces for high-strength and high-toughness BF structural materials, taking advantage of 2D materials.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"259 ","pages":"Article 110931"},"PeriodicalIF":8.3,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142533028","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

Investigating the role of fibre-matrix interfacial degradation on the ageing process of carbon fibre-reinforced polymer under hydrothermal conditions 研究水热条件下纤维-基质界面降解对碳纤维增强聚合物老化过程的作用

IF 8.3 1区材料科学

Composites Science and Technology Pub Date : 2024-10-23 DOI: 10.1016/j.compscitech.2024.110922

Wanrui Zhang , Jianchao Zou , Meiyu Liu , Zhibin Han , Yifeng Xiong , Biao Liang , Ning Hu , Weizhao Zhang

{"title":"Investigating the role of fibre-matrix interfacial degradation on the ageing process of carbon fibre-reinforced polymer under hydrothermal conditions","authors":"Wanrui Zhang , Jianchao Zou , Meiyu Liu , Zhibin Han , Yifeng Xiong , Biao Liang , Ning Hu , Weizhao Zhang","doi":"10.1016/j.compscitech.2024.110922","DOIUrl":"10.1016/j.compscitech.2024.110922","url":null,"abstract":"<div><div>The aqueous environment can deteriorate the fibre-matrix interface of carbon fibre-reinforced polymer (CFRP), significantly impairing the non-fibre-dominated mechanical properties. Thus, this study aimed to quantitatively analyse the impact of interfacial degradation on the hydrothermal ageing mechanism and process of the CFRP. Firstly, entire water absorption process of the CFRP under hydrothermal conditions was divided into three stages according to experimental measurement of its water content. Based on this division of stages, a novel water diffusion model was established for the hydrothermally aged CFRP. To measure the mechanical degradation, tensile tests were conducted on unaged, aged, and redried neat epoxy and transversely positioned unidirectional (UD) CFRP specimens. It was found that the transverse tensile strength degradation of UD CFRP was irreversible due to the permanent interfacial debonding between the fibres and matrix, in contrast to the reversible ageing of the epoxy matrix. To further quantify the fibre-matrix interfacial ageing, physically-based models were established for the degraded interfacial strength of CFRP subjected to hydrothermal conditions. After the characterization of the modelling coefficients, the physically-based models can be employed to predict interfacial strength inside the aged CFRP for various ageing durations. The prediction error was only 4.57 % for the transverse tensile strength of degraded UD CFRP with various ageing durations from the representative volume element (RVE) simulation with its interfacial strength provided by the physically-based models, validating the effectiveness of the proposed physically-based models for degraded fibre-matrix interface under various ageing conditions.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"259 ","pages":"Article 110922"},"PeriodicalIF":8.3,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142553522","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

Polymer composite cladding for selective frequency filtration: An experimental and modeling study 用于选择性频率过滤的聚合物复合包层：实验和建模研究

IF 8.3 1区材料科学

Composites Science and Technology Pub Date : 2024-10-23 DOI: 10.1016/j.compscitech.2024.110929

Noam Lusthaus , Sara Raichlin , Roey Nadiv , Oren Regev

{"title":"Polymer composite cladding for selective frequency filtration: An experimental and modeling study","authors":"Noam Lusthaus , Sara Raichlin , Roey Nadiv , Oren Regev","doi":"10.1016/j.compscitech.2024.110929","DOIUrl":"10.1016/j.compscitech.2024.110929","url":null,"abstract":"<div><div>Laser selective frequency filtering is currently performed using expensive, heavy, and bulky (millimeters in thickness) ceramic composite claddings around the laser rod, which limits the miniaturization and transportability of the laser. The cladding absorbs undesired spontaneous emissions and reflects the desired wavelength of the \"pump\" diode. As an improved alternative for the cladding on, say, a diode-pumped solid-state Nd:YAG laser rod, we investigate a spray-coated polymer composite cladding (micrometers in thickness). The polymer composite cladding is easier to process and lighter and has a much smaller volume vs. traditional ceramic composite claddings. The approach is demonstrated on spray-coated glass slides, where cubic samaria (Sm<sub>2</sub>O<sub>3</sub>) particles are used as the filler in the polymer composite cladding. The rationale for using samaria as the filler in the composite is its absorption near the laser spontaneous emission wavelength (i.e., 1064 nm) and high reflectivity at the incident pump wavelength (i.e., 808 nm). The addition of a second polymer composite layer loaded with alumina particles enables reduction of the samaria composite layer thickness. The Kubelka-Munk model is shown to successfully predict the experimentally measured optical performance of single and bilayer claddings, making it a reliable design tool for multilayer claddings.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"259 ","pages":"Article 110929"},"PeriodicalIF":8.3,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142655013","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

Vascular bundle-structured polymeric composites with fire-safe, self-detecting and heat warning capabilities for power batteries thermal management 血管束结构聚合物复合材料具有防火、自我检测和热预警功能，可用于动力电池热管理

IF 8.3 1区材料科学

Composites Science and Technology Pub Date : 2024-10-22 DOI: 10.1016/j.compscitech.2024.110921

Xinyan An , Nvfan Tang , Yilin Liu , Shiqiang Song , Chaoyue Chen , Guohao Han , Weizhen Li , Yong Zhang

{"title":"Vascular bundle-structured polymeric composites with fire-safe, self-detecting and heat warning capabilities for power batteries thermal management","authors":"Xinyan An , Nvfan Tang , Yilin Liu , Shiqiang Song , Chaoyue Chen , Guohao Han , Weizhen Li , Yong Zhang","doi":"10.1016/j.compscitech.2024.110921","DOIUrl":"10.1016/j.compscitech.2024.110921","url":null,"abstract":"<div><div>The trend of miniaturization and integration poses challenges to the thermal management of electronic devices, requiring high thermal conductivity and potential fire safety, etc. In this study, inspired by plant vascular structure, we developed a polymer composite with a vertical vascular bundle structure via a sacrificial template method and subsequent assembly of transition metal carbides/nitrides (MXene) nanosheets and phytic acid (PA) coordinated cobalt ions (Co<sup>2+</sup>) complex. The embedded MXene and PA@Co exhibit multilayer multiscale structural features, forming heat transfer channels and protective cells within the composite. The resultant composites possess high out-of-plane thermal conductivity (∼1.54 W‧m<sup>−1</sup>‧k<sup>−1</sup>) and excellent flame retardancy, including self-extinguishing, and significantly reduced heat and smoke release. Interestingly, the MXene vascular bundle structure imparts heat early warning capabilities and intelligent damage self-detection, suggesting an effective means of preventing early-stage fires and real-time monitoring of composite structural and functional integrity. Such biomimetic strategies enable new insights into the designing of multifunctional, intelligent polymer composites.</div></div>","PeriodicalId":283,"journal":{"name":"Composites Science and Technology","volume":"259 ","pages":"Article 110921"},"PeriodicalIF":8.3,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142533026","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