Functional Composites and Structures最新文献_第10页

Investigation on anti-penetration capability of water filled aluminum alloy cell structure to the shaped charge jet 充水铝合金电池结构抗聚能射流侵彻性能研究

IF 2.8

Functional Composites and Structures Pub Date : 2022-01-01 DOI: 10.1088/2631-6331/ac77e5

Changfang Zhao, Kebin Zhang

{"title":"Investigation on anti-penetration capability of water filled aluminum alloy cell structure to the shaped charge jet","authors":"Changfang Zhao, Kebin Zhang","doi":"10.1088/2631-6331/ac77e5","DOIUrl":"https://doi.org/10.1088/2631-6331/ac77e5","url":null,"abstract":"Passive protective armor is reliable and cheap, and is favored by many armored weapons and equipment. However, reports on metal-liquid composite armor are not sufficient and systematic. Based on the shaped charge jet (SCJ), the anti-penetration capabilities of water filled aluminum alloy cell structure were studied. The hourglass cell structure (HCS) was designed according to the shock wave propagation characteristics in liquid, and the expansion-convergence cell structure (E-CCS) was derived. Based on the virtual origin theory, the residual tip velocity of jet after SCJ penetrated the cell structure was calculated. According to the theory of supersonic disturbance propagation, the Mach cone half angle of SCJ shock wave propagation in liquid was defined and corrected. The propagation and reflection behavior of shock wave were discussed to analysis the radial convergence of liquid. Via the Van Leer Arbitrary Lagrangian Euler finite element simulation model verified by experiments, the simulation studies of SCJ penetrated the circular cell structure (CCS), HCS, E-CCS and convergence/expansion multi-cell structure were performed. The results show that HCS has better effect of interfering with SCJ than that of CCS and E-CCS. An important discovery is that when the liquid composite multi-cell structure is penetrated by SCJ, the attacked cell will not affect other cells due to the shock wave has been trapped in a single cell.","PeriodicalId":12652,"journal":{"name":"Functional Composites and Structures","volume":"4 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"61184036","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

Prediction of permeability of five-harness satin fabric by a modified Kozeny constant determined from experiments 用改进的科泽尼常数预测五束缎面织物的透气性

IF 2.8

Functional Composites and Structures Pub Date : 2021-12-29 DOI: 10.1088/2631-6331/ac46fa

Dongchul Park, Tianyu Yu, Soojeong Park, Do-Hoon Shin, Yun-Hae Kim

{"title":"Prediction of permeability of five-harness satin fabric by a modified Kozeny constant determined from experiments","authors":"Dongchul Park, Tianyu Yu, Soojeong Park, Do-Hoon Shin, Yun-Hae Kim","doi":"10.1088/2631-6331/ac46fa","DOIUrl":"https://doi.org/10.1088/2631-6331/ac46fa","url":null,"abstract":"Permeability is a critical parameter not only in flow simulation analysis but also in liquid composite molding process. When a liquid resin is infused into a dry preform, the impregnation is mainly characterized by the permeability. The permeability of a dry preform can be obtained through theoretical and experimental methods. In the theoretical estimation of permeability, the effects of fiber arrangement as well as fabric type and form for various types of preforms are not sufficiently reflected in the calculation. Thus, there is a gap between the theoretical and experimental permeability. Recently, experimental determination has been gaining considerable attention as a mean to obtain accurate permeability values; however, it requires a number of trials. In this study, the permeability of the Hexforce G0926 5HS (five-harness satin) carbon fabric preform is estimated using representative theoretical prediction models, the Gebart and Kozeny–Carman equations. In addition to the Kozeny–Carman permeability (using the Kozeny constant values from literature), the Kozeny constant obtained through experiments was used to obtain a modified Kozeny–Carman permeability. All three calculated permeabilities were compared and verified with the fabric manufacturer’s reference value. The results showed that the modified Kozeny–Carman permeability using the experimentally determined Kozeny constant was closest to the reference value at 57% fiber volume fraction. Further, the predicted permeability was compared with other experimental permeability values from literature over the 40%–65% range of fiber volume fraction. We found that the modified Kozeny–Carman permeability once again came closest to the literature values. Finally, an optimized fitting equation was proposed to replace the Kozeny–Carman equation for predicting the permeability of Hexforce G0926 5HS carbon fabric over the 40%–65% fiber volume fraction range.","PeriodicalId":12652,"journal":{"name":"Functional Composites and Structures","volume":"4 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2021-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48352285","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: 1

Boosted dielectric performance of organic–inorganic nanocomposites based on BaTiO3 via 2D TiO2 templates 通过2D TiO2模板提高基于BaTiO3的有机-无机纳米复合材料的介电性能

IF 2.8

Functional Composites and Structures Pub Date : 2021-12-13 DOI: 10.1088/2631-6331/ac4279

Se Yeon Park, Moonjeong Jang, Wooseok Song, S. Lee, D. Yoon, K. An

{"title":"Boosted dielectric performance of organic–inorganic nanocomposites based on BaTiO3 via 2D TiO2 templates","authors":"Se Yeon Park, Moonjeong Jang, Wooseok Song, S. Lee, D. Yoon, K. An","doi":"10.1088/2631-6331/ac4279","DOIUrl":"https://doi.org/10.1088/2631-6331/ac4279","url":null,"abstract":"Organic–inorganic hybrid dielectrics composed of nanoscale ceramic fillers in polymer matrices have attracted considerable attention because they can overcome the inherent limitations such as the low dielectric constant, high dielectric loss, and low film density associated with mechanically flexible pristine polymer materials. Barium titanate (BaTiO3), a representative perovskite-based material with a high permittivity, is suitable for applications as nanofillers in nanocomposite dielectrics. X-ray diffraction combined with Raman analysis suggest that a two-step hydrothermal synthesis, which uses synthesized TiO2 nanosheets as a template, is an effective method for the synthesis of pure BaTiO3 nanoparticles compared with other methods. Ultrasonic treatment is employed to disperse BaTiO3 nanoparticles with different concentrations in polyvinyl alcohol (PVA) polymer, and the dielectric performance of the nanocomposite films has been examined. In this study, 20 wt% BaTiO3–PVA nanocomposite dielectric showed superior capacitance and dielectric constant performance, i.e. five times higher than that of the pristine PVA.","PeriodicalId":12652,"journal":{"name":"Functional Composites and Structures","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2021-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49278372","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: 1

A new cure kinetics model to simulate thermomechanical behavior of polymeric sealants for automotive applications 一种新的固化动力学模型，用于模拟汽车用聚合物密封剂的热机械行为

IF 2.8

Functional Composites and Structures Pub Date : 2021-12-07 DOI: 10.1088/2631-6331/ac40a5

Jae-Hyuk Choi, Wonbo Shim, C. Rhie, Woong‐Ryeol Yu

引用次数: 0

Study the effect of Nano Zro2 and Tio2 and rotation speed on friction behavior of rotary friction welding of HIPS and P.P 研究纳米Zro2、Tio2和转速对HIPS和pp旋转摩擦焊摩擦行为的影响

IF 2.8

Functional Composites and Structures Pub Date : 2021-12-06 DOI: 10.1088/2631-6331/ac407d

M. Afzali, V. Asghari

{"title":"Study the effect of Nano Zro2 and Tio2 and rotation speed on friction behavior of rotary friction welding of HIPS and P.P","authors":"M. Afzali, V. Asghari","doi":"10.1088/2631-6331/ac407d","DOIUrl":"https://doi.org/10.1088/2631-6331/ac407d","url":null,"abstract":"\u0000 the purpose of this project was to introduce a way to improve the mechanical properties of welded dissimilar material, which gives benefits such as affordable, high speed, and suitable bond property. In this experimental project, the friction welding method has been applied, including combining parameters, such as numerical control (NC) machine including two different speeds, and three different cross-sections; including flat, cone, and step surfaces. When the welding process was done, samples were implemented and prepared via bending test of materials. the results have shown that, besides increasing the machining velocity, the surface friction increased, and so did the temperature. By considering the stated experimental facts, the melting temperature of composite materials has increased. This provides the possibility of having a better blend of nanomaterial compared to the base melted plastics. Thus, the result showed that, besides increasing the weight percentage (wt %) of Nanomaterials contents and machining velocity, the mechanical properties have increased on the welded area for all three types of samples. This enhancement is due to the better melting process on the welded area with attendance of various Nanoparticles contents. Also, the results showed that the shape of the welding area could play a significant role, and the results also change drastically where the shape changes. Optimum shape in the welding process has been dedicated to the step surface. The temperature causes the melting process, which is a significant factor in the friction welding process.","PeriodicalId":12652,"journal":{"name":"Functional Composites and Structures","volume":"1 1","pages":""},"PeriodicalIF":2.8,"publicationDate":"2021-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46305892","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: 1

Study of mode II interlaminar fracture toughness of laminated composites of glass and jute fibres in epoxy for structural applications 结构用环氧树脂玻璃-黄麻层压复合材料II型断裂韧性研究

IF 2.8

Functional Composites and Structures Pub Date : 2021-12-01 DOI: 10.1088/2631-6331/ac376e

P. Chandel, Y. Tyagi, K. Jha, Rajeev Kumar, Shubham Sharma, Jujhar Singh, R. A. Ilyas

{"title":"Study of mode II interlaminar fracture toughness of laminated composites of glass and jute fibres in epoxy for structural applications","authors":"P. Chandel, Y. Tyagi, K. Jha, Rajeev Kumar, Shubham Sharma, Jujhar Singh, R. A. Ilyas","doi":"10.1088/2631-6331/ac376e","DOIUrl":"https://doi.org/10.1088/2631-6331/ac376e","url":null,"abstract":"Composites are being used in the place of metals in many industries as they have a lower density and are cheaper than metals. In aerospace industries there is requirement for light weight together with strength, and reinforced fibre composites are superior in some critical properties compared with metals. In this study, laminated composites were fabricated with woven E-glass and jute fibres in an epoxy matrix by a hand layup method. The samples were prepared as per the relevant the America Society for Testing ad Materials (ASTM) standard and tested for mode II interlaminar fracture toughness to investigate delamination resistance. Mode II interlaminar fracture toughness was evaluated by an end-notched flexure test using three-point bending. The fracture toughness G IIC was calculated for a curing temperature range from 40 °C to 70 °C at intervals of 5 °C for different sets of laminated composites. The investigations revealed that when the curing temperature of laminated composites was increased from 40 °C to 70 °C, the interlaminar fracture toughness G IIC was increased in neat woven E-glass laminated composites, decreased in neat jute laminated composites, significantly increased in laminated composites with woven E-glass fibres in compression and jute fibres in tension and slightly increased when woven E-glass fibres were kept in tension and jute fibres in compression.","PeriodicalId":12652,"journal":{"name":"Functional Composites and Structures","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43308352","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: 11

Interfacial engineering for design of novel 2D cobalt sulfide-Mxene heterostructured catalyst toward alkaline water splitting 新型二维硫化钴- mxene异质结构碱性水裂解催化剂界面工程设计

IF 2.8

Functional Composites and Structures Pub Date : 2021-11-26 DOI: 10.1088/2631-6331/ac3ddc

Phan Khanh Linh Tran, M. Kim, Thanh Hai Nguyen, D. Tran, N. Kim, J. Lee

{"title":"Interfacial engineering for design of novel 2D cobalt sulfide-Mxene heterostructured catalyst toward alkaline water splitting","authors":"Phan Khanh Linh Tran, M. Kim, Thanh Hai Nguyen, D. Tran, N. Kim, J. Lee","doi":"10.1088/2631-6331/ac3ddc","DOIUrl":"https://doi.org/10.1088/2631-6331/ac3ddc","url":null,"abstract":"In this work, we used an interfacial engineering method to investigate a novel hybrid of two-dimensional cobalt sulfide-Mxene (2D CoS-Mo2TiC2) heterostructure supported by a three-dimensional foam substrate. The modification electronic properties caused by unique interfacial interactions resulted in a significant increase in the number of electroactive sites and charge transfer ability, thereby accelerating kinetics of hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) in an alkaline medium. The catalyst required overpotential of 248.2 and 310 mV at a current response of 50 mA cm−2 for HER and OER, respectively, along with a remarkable stability. In addition, a two-electrode electrolyzer derived from the developed 2D CoS-Mo2TiC2 catalyst showed a cell voltage of 1.74 V at 10 mA cm−2 and a good stability during 25 h continuous operation. The achieved results were associated to the formation of a unique interfacial heterostructure with the strong interaction between two material phases, which effectively modified electronic structure and surface chemistry, thereby leading to the enhancement of catalytic performance. The study offered a potential route to synthesize new catalyst for green hydrogen production via water splitting.","PeriodicalId":12652,"journal":{"name":"Functional Composites and Structures","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2021-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48321973","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: 15

The influence of human hair on kenaf and Grewia fiber-based hybrid natural composite material: an experimental study 人发对红麻和绿麻纤维基杂化天然复合材料影响的实验研究

IF 2.8

Functional Composites and Structures Pub Date : 2021-11-18 DOI: 10.1088/2631-6331/ac3afc

S. Boopathi, V. Balasubramani, R. S. Kumar, G. Singh

{"title":"The influence of human hair on kenaf and Grewia fiber-based hybrid natural composite material: an experimental study","authors":"S. Boopathi, V. Balasubramani, R. S. Kumar, G. Singh","doi":"10.1088/2631-6331/ac3afc","DOIUrl":"https://doi.org/10.1088/2631-6331/ac3afc","url":null,"abstract":"The demand for natural composite products to make various industrial and commercial products and protect the environment is continuously increasing. In this paper, a hybrid plant fiber composite (HPFC) is produced by a hand lay-up molding method using 64 wt% resin matrix and 36 wt% natural fibers (kenaf, Grewia and human hair). The influences of the weight of the natural fibers on tensile, flexural and impact strengths were investigated by the simplex lattice method. It was revealed that the percentage contribution of kenaf and human hair fibers to tensile strength, flexural and impact strengths is higher than that of Grewia fiber. The optimum weight percentage of fibers is 13.5 wt% kenaf, 15.3 wt% human hair and 7.2 wt% Grewia to produce a HPFC with desirable mechanical properties. The mechanical properties of the HPFC were compared with those of HPFC without human hair. The tensile, flexural, and impact strengths of the HPFC were 17.95%, 11.1% and 19.79% higher than the HPFC without human hair. The predicted optimum HPFC for making commercial products to fulfill consumer demand is recommended.","PeriodicalId":12652,"journal":{"name":"Functional Composites and Structures","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2021-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43505962","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: 9

Antibacterial and physical characteristics of silver-loaded hydroxyapatite/alginate composites 载银羟基磷灰石/海藻酸盐复合材料的抗菌和物理特性

IF 2.8

Functional Composites and Structures Pub Date : 2021-11-18 DOI: 10.1088/2631-6331/ac3afb

L. Sukhodub, A. Pogrebnjak, L. Sukhodub, A. Sagidugumar, A. Kistaubayeva, I. Savitskaya, A. Talipova, A. Sadibekov, N. Kantay, K. Akatan, A. Turlybekuly

{"title":"Antibacterial and physical characteristics of silver-loaded hydroxyapatite/alginate composites","authors":"L. Sukhodub, A. Pogrebnjak, L. Sukhodub, A. Sagidugumar, A. Kistaubayeva, I. Savitskaya, A. Talipova, A. Sadibekov, N. Kantay, K. Akatan, A. Turlybekuly","doi":"10.1088/2631-6331/ac3afb","DOIUrl":"https://doi.org/10.1088/2631-6331/ac3afb","url":null,"abstract":"The influence of silver ions on the antibacterial properties and morphology of hydroxyapatite-silver (HA-Ag) and hydroxyapatite-alginate-silver (HA-Alg-Ag) nanocomposites was studied. The microstructure and phase composition of the obtained nanocomposites were investigated by scanning electron microscopy, transmission electron microscopy, x-ray diffraction and Fourier transform infrared spectroscopy, and the formation of the crystalline phase of Ag3PO4 was proved. According to the results, silver ions were incorporated into the HA structure, partially replacing calcium ions. Assessment of the antimicrobial activity was carried out on Gram-negative (Pseudomonas aeruginosa) and Gram-positive (Staphylococcus aureus) bacterial test cultures by the co-incubation and modified agar diffusion methods. We demonstrated that the antimicrobial and adhesive properties of both Ag-HA and HA-Alg-Ag are strongly affected by the crystal lattice structure, controlled by the location of silver ions. The composite materials could be of great interest in the biomedical field, including in the design of coatings that prevent or slow the development of bacterial biofilms.","PeriodicalId":12652,"journal":{"name":"Functional Composites and Structures","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2021-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46166724","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: 2

Photocatalytic application of graphene oxide–ZnO nanocomposite for the reduction of methylene blue dye 氧化石墨烯- zno纳米复合材料在亚甲基蓝染料还原中的光催化应用

IF 2.8

Functional Composites and Structures Pub Date : 2021-11-08 DOI: 10.1088/2631-6331/ac376f

K. Banu, Sr Udith Ferdila, M. Jennifer

{"title":"Photocatalytic application of graphene oxide–ZnO nanocomposite for the reduction of methylene blue dye","authors":"K. Banu, Sr Udith Ferdila, M. Jennifer","doi":"10.1088/2631-6331/ac376f","DOIUrl":"https://doi.org/10.1088/2631-6331/ac376f","url":null,"abstract":"The graphene oxide (GO) and GO–zinc oxide (GO–ZnO) nanocomposite were prepared using simplified techniques with modified Hummer’s and solvothermal methods for photocatalytic application. In a comparative study, the optimized geometries, binding energies, electronic properties, non-linear optical properties and density of states (DOS) of GO–ZnO were calculated using density functional theory calculations with the B3LYP method and 6-31G (d,p) and LanL2DZ basis sets to examine the binding site of a methylene blue (MB) dye systematically. The result of natural bond orbital analysis revealed the effective charge transfer and also explained the mechanism and efficiency of the photocatalytic activity of GO–ZnO. DOS supported the strong interaction of MB with GO–ZnO leading to the degradation of the MB dye. The theoretical results obtained depict the existence of n → σ*, n→ n* and σ → σ* interactions, improved charge transfer, and reduced band gap which establish the use of GO–ZnO in visible light photocatalysis. Characterization methods such as x-ray diffraction (XRD), Fourier transform infrared (FTIR) and ultraviolet (UV) analysis were carried out to support our theoretical results. The XRD results confirmed the particle size of 21 nm with inter-layer spacing of 0.87 nm. FTIR spectroscopy indicated the characteristic bands related to the elements in GO–ZnO. The higher electrical conductivity was studied using UV–Vis spectral analysis. The calculated results show good agreement with experimental observations which reveal that the GO–ZnO nanocomposite has good photocatalytic behavior.","PeriodicalId":12652,"journal":{"name":"Functional Composites and Structures","volume":" ","pages":""},"PeriodicalIF":2.8,"publicationDate":"2021-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48612094","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: 1