Failure mode maps of bio-inspired sandwich beams under repeated low-velocity impact
Publication date: 29 September 2019Source: Composites Science and Technology, Volume 182Author(s): S.H. Abo Sabah, A.B.H. Kueh, N. Muhamad BunnoriAbstractExisting sandwich structures failure maps are confined only to data from the quasi-static bending tests even for describing failure modes due to the impact event. Strengths of the constituent layers, which are not well-described by these maps, can reasonably change especially under the repeated impact load case. Hence, a new series of more realistic failure mode maps have been developed from the experimentally and numerically obtained observations on recently proposed bio...
Source: Composites Science and Technology - August 22, 2019 Category: Science Source Type: research

Human-interactive drone system remotely controlled by printed strain/pressure sensors consisting of carbon-based nanocomposites
Publication date: 29 September 2019Source: Composites Science and Technology, Volume 182Author(s): Byeong-Cheol Kang, Tae-Jun HaAbstractWe demonstrate human-interactive drone remote control system consisting of high-performance printed strain/pressure sensors with carbon-based nanocomposites, fabricated by all-solution-process at 80 °C. The armband-type drone remote control system was designed by a main control operation module, a sensing module and a signal processing module at an overall size of 12  cm × 7  cm x 1.5 cm (width x length x height). Rapid and accurate sensing properties of the sensi...
Source: Composites Science and Technology - August 22, 2019 Category: Science Source Type: research

An improved technique for dispersion of natural graphite particles in thermoplastic polyurethane by sub-critical gas-assisted processing
Publication date: Available online 16 August 2019Source: Composites Science and TechnologyAuthor(s): An Huang, Hankun Wang, Thomas Ellingham, Xiangfang Peng, Lih-Sheng TurngAbstractDispersing fillers uniformly is the main technological challenge when considering nanocomposites. In this paper, a novel and efficient sub-critical gas-assisted processing (SGAP) technique is explored—an environmentally benign process that utilizes compressed CO2 to help effectively disperse aggregated natural graphite particles (NGPs) (3 wt%) in a thermoplastic polyurethane (TPU) matrix. A twin-screw extruder (TSE) equipped with a simpl...
Source: Composites Science and Technology - August 17, 2019 Category: Science Source Type: research

Conductive shear thickening gel/Kevlar wearable fabrics: A flexible body armor with mechano-electric coupling ballistic performance
Publication date: Available online 13 August 2019Source: Composites Science and TechnologyAuthor(s): Chunyu Zhao, Yunpeng Wang, Saisai Cao, Shouhu Xuan, Wanquan Jiang, Xinglong GongAbstractThis work reported a novel conductive shear thickening gel-Kevlar fabrics (c-STG/Kevlar) body armor material which possessed both anti-impact performance and dynamic mechano-sensing behavior. Due to the excellent shear thickening effect, the c-STG/Kevlar showed a higher safeguarding property than the neat Kevlar. Under low-velocity drop tower loading, the maximum center force of c-STG/Kevlar was only 5768 N, which was nearly half of th...
Source: Composites Science and Technology - August 14, 2019 Category: Science Source Type: research

Polyacrylonitrile/liquid crystalline graphene oxide composite fibers – Towards high performance carbon fiber precursors
This study revealed that it is possible to produce high strength precursor fibers by wet spinning with the addition of low filler content by make use of LCGO in PAN solution; this can further provide pathways for making high performance carbon fibers. (Source: Composites Science and Technology)
Source: Composites Science and Technology - August 13, 2019 Category: Science Source Type: research

Heterogeneous nucleation promoting formation and enhancing microwave absorption properties in hierarchical sandwich-like polyaniline/graphene oxide induced by mechanical agitation
Publication date: Available online 12 August 2019Source: Composites Science and TechnologyAuthor(s): Jia Liu, Yuping Duan, Lulu Song, Jianjun Hu, Yuansong ZengAbstractIn this paper, polyaniline/graphene oxide composites were prepared by a one-step intercalation polymerization of aniline in the presence of GO layers under different mechanical agitation duration period, and the formation mechanism and microwave absorbing mechanism were investigated for an entire hierarchical sandwich-like structured polyaniline/graphene oxide composites. The morphology and structure were characterized by scanning electron microscopy (SEM), t...
Source: Composites Science and Technology - August 13, 2019 Category: Science Source Type: research

Fatigue damage of cohesive interfaces in fiber-reinforced polymer composite laminates
Publication date: Available online 10 August 2019Source: Composites Science and TechnologyAuthor(s): S.S.R. Koloor, M.A. Abdullah, M.N. Tamin, M.R. AyatollahiAbstractThe weak interfaces in fiber-reinforced polymer (FRP) composite laminates often dictates the reliability of the composite structures. In this respect, a new cyclic cohesive zone model (CCZM) is introduced for accurate quantitative description of the interlaminar fatigue failure process. The model incorporates the interlaminar damage through the measured fatigue degradation of the strength, stiffness, and critical energy release rate properties. A combined expe...
Source: Composites Science and Technology - August 11, 2019 Category: Science Source Type: research

Low percolation 3D Cu and Ag shell network composites for EMI shielding and thermal conduction
This study is set to pave the way for designing advanced EMI shielding and thermal conductive materials by a scalable and efficient synthesis approach. (Source: Composites Science and Technology)
Source: Composites Science and Technology - August 10, 2019 Category: Science Source Type: research

A stochastically homogenized peridynamic model for intraply fracture in fiber-reinforced composites
Publication date: Available online 8 August 2019Source: Composites Science and TechnologyAuthor(s): Javad Mehrmashhadi, Ziguang Chen, Jiangming Zhao, Florin BobaruAbstractThe quasi-static fracture behavior in the transverse cross-section of unidirectional fiber-reinforced composites (FRCs) is investigated using a new intermediately-homogenized peridynamic (IH-PD) model and a fully homogenized peridynamic (FH-PD) model. The novelty in the IH-PD model here is accounting for the topology of the fiber-phase in the transverse sample loading via a calibration to the Halpin-Tsai model. Both models, overall, capture well the measu...
Source: Composites Science and Technology - August 10, 2019 Category: Science Source Type: research

Method to determine the required microstructure size to be represented by a second order fibre orientation tensor using X-ray micro computed tomography to evaluate compression moulded composites
Publication date: Available online 8 August 2019Source: Composites Science and TechnologyAuthor(s): Trevor Sabiston, Kaan Inal, Pearl Lee-SullivanAbstractThe second order fibre orientation tensor has been used to predict the mechanical response of injection and compression moulded composites with the capability to couple mould filling with structural finite element simulations to account for the microstructure. In order to accurately model these materials the mesh size used simulations must be representative of the actual microstructure of the composite. Herein a method to determine the microstructure size required to achi...
Source: Composites Science and Technology - August 10, 2019 Category: Science Source Type: research

Improving the electrical conductivity and fracture toughness of carbon fibre/epoxy composites by interleaving MWCNT-doped thermoplastic veils
Publication date: Available online 8 August 2019Source: Composites Science and TechnologyAuthor(s): Dong Quan, Chiara Mischo, Xiping Li, Gennaro Scarselli, Alojz Ivanković, Neal MurphyAbstractPolyethylene terephthalate (PET) veils doped with and without multi-walled carbon nanotubes (MWCNT) were used to interlay a unidirectional carbon fibre/epoxy composite. The electrical and fracture properties of the laminates were studied. Significant improvements in the Mode-I fracture energy (GIC) and Mode-II fracture energy (GIIC) of the laminates were observed for interlaying the original PET veils. This was associated with a cons...
Source: Composites Science and Technology - August 10, 2019 Category: Science Source Type: research

Morphologies and properties of epoxy/multi-walled carbon nanotube nanocomposite foams prepared through the free-foaming and limited-foaming process
Publication date: Available online 8 August 2019Source: Composites Science and TechnologyAuthor(s): Lijun Wang, Yue He, Tuanhui Jiang, Xiang Zhang, Chun Zhang, Xiangfang PengAbstractMicrocellular epoxy/multi-walled carbon nanotube (EP/MWCNT) composite foams loaded with 2 wt% (mass fraction) of MWCNT were prepared through the free-foaming process (Fre-foam) and limited-foaming process (Lim-foam) using chemical foaming agent (CFA), respectively. The morphologies of EP/MWCNT composite foams with different densities were analyzed by scanning electron microscopy (SEM). It was found that the cell size of both Fre-foam and Lim-...
Source: Composites Science and Technology - August 10, 2019 Category: Science Source Type: research

Warp direction fatigue behavior and damage mechanisms of centrally notched 2.5D woven composites at room and elevated temperatures
Publication date: Available online 7 August 2019Source: Composites Science and TechnologyAuthor(s): Jian Song, Weidong Wen, Haitao Cui, Yuejiao Wang, Yang Lu, Wujian Long, Lixiao LiAbstractFatigue behavior, notch sensitivity and environmental effect are three of the principal concerns in composite applications, especially those for aeroengines that require mechanical fastening and fatigue resistance at elevated temperatures. As a new generation of woven composites, 2.5D woven composites (2.5DWC), have drawn increasing amounts of interest due to the excellent fatigue resistance of these materials. However, the lack of tempe...
Source: Composites Science and Technology - August 9, 2019 Category: Science Source Type: research

Stretchable photodetector utilizing the change in capacitance formed in a composite film containing semiconductor particles
Publication date: Available online 7 August 2019Source: Composites Science and TechnologyAuthor(s): Sungwoo Jun, Kwang Wook Choi, Kwang-Seok Kim, Dae Up Kim, Chan-Jae Lee, Chul Jong Han, Cheul-Ro Lee, Byeong-Kwon Ju, Jong-Woong KimAbstractConventional photodetectors (PDs) are based on measuring photocurrent, which is formed by the separation of electron-hole pairs generated in semiconductors upon light irradiation, through electrodes in direct contact with the semiconductors. Such devices are usually fabricated through complicated and precise processes such as thin film formation by vacuum deposition and fine patterning by...
Source: Composites Science and Technology - August 9, 2019 Category: Science Source Type: research

Preparation of electrospun chitosan/poly(ethylene oxide) composite nanofibers reinforced with cellulose nanocrystals: Structure, morphology, and mechanical behavior
Publication date: Available online 7 August 2019Source: Composites Science and TechnologyAuthor(s): Dong Wang, Wanli Cheng, Qingxiang Wang, Junjiao Zang, Yan Zhang, Guangping HanAbstractCellulose nanocrystals-reinforced chitosan-poly(ethylene oxide) (CNC/CS-PEO) nanofibers were successfully prepared by electrospinning. The nanofibers reinforced with CNC exhibited excellent mechanical performance. The tensile strength of CNC/CS-PEO nanofibers with 6 wt% CNC loading was increased by 5.76 MPa, 33.5% higher than that of CS-PEO nanofibers. Smooth nanofibers with diameters of about 500 nm could be obtained with lower CNC l...
Source: Composites Science and Technology - August 9, 2019 Category: Science Source Type: research

Experimental investigation of high velocity oblique impact and residual tensile strength of carbon/epoxy laminates
Publication date: Available online 6 August 2019Source: Composites Science and TechnologyAuthor(s): Ashwin R. Kristnama, Xiaodong Xu, David Nowell, Michael R. Wisnom, Stephen R. HallettAbstractComposite components are required to be resilient against Foreign Object Damage (FOD) induced by localised high velocity impact events. Here an experimental investigation into high velocity oblique impacts and residual tensile strength of thin quasi-isotropic carbon/epoxy laminates is reported. Oblique (45°) impacts between 100 m/s and 350 m/s were carried out using 3 mm steel cubes on the edge and the centre of the laminat...
Source: Composites Science and Technology - August 7, 2019 Category: Science Source Type: research

A highly adhesive flexible strain sensor based on ultra-violet adhesive filled by graphene and carbon black for wearable monitoring
Publication date: Available online 6 August 2019Source: Composites Science and TechnologyAuthor(s): Ping Liu, Jian Liu, Xun Zhu, Chen Wu, Yue Liu, Weidong Pan, Junnan Zhao, Xiaohui Guo, Caixia Liu, Ying Huang, Aiguo SongAbstractEnsuring the accuracy of signal detection under repeated deformation is a challenge for flexible sensor reported in recent years, and achieving reliable adhension between the sensor and substrate is a key factor. Here, this article reported a highly adhesive flexible strain sensor based on ultra-violet adhesive filled by modified graphene and carbon black for wearable monitoring. This strain sensor ...
Source: Composites Science and Technology - August 7, 2019 Category: Science Source Type: research

Experimental and numerical investigation of the toughening mechanisms in bioinspired composites prepared by freeze casting
Publication date: Available online 3 August 2019Source: Composites Science and TechnologyAuthor(s): Jingyu Liu, Ruixiang Bai, Zhenkun Lei, Chun Xu, Qingsong Ye, Wayde Martens, Prasad KDV. Yarlagadda, Cheng YanAbstractStrength and toughness have been generally deemed as two incompatible properties in many materials. However, balanced toughness and strength have been observed in biomaterials, whose hard and soft phases are arranged into unique and hierarchical architectures. Therefore, it is necessary to understand the underpinning toughening mechanisms and develop reliable procedures that can mimic these unique structures a...
Source: Composites Science and Technology - August 4, 2019 Category: Science Source Type: research

A high performance all-organic thermoelectric fiber generator towards promising wearable electron
Publication date: Available online 3 August 2019Source: Composites Science and TechnologyAuthor(s): Xiaoqi Lan, Tongzhou Wang, Congcong Liu, Peipei Liu, Jingkun Xu, Xiaofang Liu, Yukou Du, Fengxing JiangAbstractFiber-based materials have gained great concern in wearable organic electrons due to reliable flexibility and excellent electron transport property. Thermoelectric (TE) conversion has been regarded as a promising energy harvesting for protable electron devices. However, the development of n-type organic material with good environmental stability hinder the further assembling of an all-organic TE generator. Herein, w...
Source: Composites Science and Technology - August 4, 2019 Category: Science Source Type: research

Free standing flexible conductive PVA nanoweb with well aligned silver nanowires
Publication date: Available online 3 August 2019Source: Composites Science and TechnologyAuthor(s): Kiran Yadav, Ratyakshi Nain, Manjeet Jassal, Ashwini K. AgrawalAbstractIn the present study, polyvinyl alcohol (PVA) nanofibres having uniformly distributed, well aligned, and highly inter-connected silver nanowires are electrospun. Using the approach, a very high amount of nanowires (up to 34.5 wt%) could be successfully incorporated into the nanofibres. A free standing, highly conducting nanoweb is fabricated with the conductivity of approximately 655 S/cm. These conductive nanowebs are of interest for a number of elec...
Source: Composites Science and Technology - August 4, 2019 Category: Science Source Type: research

Controlling of resin impregnation and interfacial adhesion in carbon fiber/polycarbonate composites by a spray-coating of polymer on carbon fibers
Publication date: Available online 1 August 2019Source: Composites Science and TechnologyAuthor(s): Ting-Ting Yao, Yu-Ting Liu, Hong Zhu, Xiao-Fang Zhang, Gang-Ping WuAbstractTo improve the interfacial properties between carbon fibers (CFs) and polycarbonate (PC) resin, the PC resin was pre-coated onto the CF surfaces by a spray-coating method, and a post-heating process was applied for ensuring uniformity of the coating layer. To further investigate the interfacial interactions between the CFs and the coating layers, the physically-adsorbed PC resins were removed from some coated CFs by washing with solvent. The results s...
Source: Composites Science and Technology - August 3, 2019 Category: Science Source Type: research

Particle-toughened interlayers enhance mechanical response of composite laminates
Publication date: Available online 2 August 2019Source: Composites Science and TechnologyAuthor(s): Minh Hoang Nguyen, Paul Davidson, Anthony M. WaasAbstractToughened composite materials, where the toughening agents are micro-particles dispersed within the interlayer resin rich regions, provide enhanced delamination resistance. This delay in delamination promotes intralaminar micro-cracking and macro-cracking, thus providing superior toughness. In this paper, a thorough study of damage accumulation was conducted to identify and quantify failure mechanisms in the ±45∘ laminate axial tensile test. Progression of dam...
Source: Composites Science and Technology - August 3, 2019 Category: Science Source Type: research

Recyclable nanocomposite foams of Poly(vinyl alcohol), clay and cellulose nanofibrils – Mechanical properties and flame retardancy
Publication date: Available online 1 August 2019Source: Composites Science and TechnologyAuthor(s): Lilian Medina, Federico Carosio, Lars A. BerglundAbstractFoam-like clay-nanocellulose hybrids are of great interest as load-bearing structural foams with excellent fire retardancy, due to unique effects from clay on thermal cellulose degradation. For the first time, the fire retardancy of clay-nanocellulose foams are studied in detail, in particular the effect of a third polymer phase, poly(vinyl alcohol). The composition with optimum mechanical properties and fire retardancy is identified and analyzed. Foams are prepared by...
Source: Composites Science and Technology - August 1, 2019 Category: Science Source Type: research

A novel aluminium/CFRP hybrid composite with a bio-inspired crossed-lamellar microstructure for preservation of structural integrity
Publication date: Available online 31 July 2019Source: Composites Science and TechnologyAuthor(s): R. Häsä, S.T. PinhoAbstractIn this paper, we demonstrate that a novel hybrid composite of aluminium and Carbon Fibre Reinforced Polymer (CFRP) with a microstructure inspired by a biological crossed-lamellar microstructure is an attractive alternative for applications where structural integrity is paramount. Composites with such microstructure are prototyped and tested using both standard and thin-ply CFRP prepreg. Three-point bend tests are carried out in an SEM environment, showing extensive diffuse damage in the C...
Source: Composites Science and Technology - July 31, 2019 Category: Science Source Type: research

A new three-dimensional progressive damage model for fiber-reinforced polymer laminates and its applications to large open-hole panels
Publication date: Available online 28 July 2019Source: Composites Science and TechnologyAuthor(s): Lixiao Wei, Wenqing Zhu, Zhongliang Yu, Junjie Liu, Xiaoding WeiAbstractWith fiber-reinforced Polymers (FRPs) widely used in aircraft, design and analysis of the mechanical performance and stability of structures and parts made of FRPs with various open-holes become very important. Currently, accurately predicting the failure patterns and ultimate strength of open-hole FRP structures remains very challenging. In this paper, a three-dimensional progressive damage model based on Puck's criterion on unidirectional FRP laminates ...
Source: Composites Science and Technology - July 29, 2019 Category: Science Source Type: research

Preparation and energy storage performance of transparent dielectric films with two-dimensional platelets
This study provides a solution for obtaining high energy density dielectric composites with very low filler content by a simple and easy method, which is highly desired for power systems and advanced electronics. (Source: Composites Science and Technology)
Source: Composites Science and Technology - July 28, 2019 Category: Science Source Type: research

Compressive failure of fiber composites containing stress concentrations: Homogenization with fiber-matrix interfacial decohesion based on a total Lagrangian formulation
Publication date: Available online 27 July 2019Source: Composites Science and TechnologyAuthor(s): Vedad Tojaga, Selcuk Hazar, Sören ÖstlundAbstractCompression failure by fiber kinking limits the structural applications of fiber composites. Fiber kinking is especially prevalent in laminates with holes and cutouts. The latter behavior is characterized by strain localization in the matrix material and fiber rotations. To study fiber kinking on the level of the individual constituents, a homogenization of fiber composites is presented. It is based on a total Lagrangian formulation, making it independent of fiber rot...
Source: Composites Science and Technology - July 28, 2019 Category: Science Source Type: research

Microstructural analysis of short glass fiber reinforced thermoplastics based on x-ray micro-computed tomography
Publication date: Available online 26 July 2019Source: Composites Science and TechnologyAuthor(s): Patrick Arthur Hessman, Thomas Riedel, Fabian Welschinger, Kurt Hornberger, Thomas BöhlkeAbstractAs a result of the injection molding process, short glass fiber reinforced thermoplastics (SFRT) exhibit complex microstructures with fibers of different length and orientation as well as spatially varying fiber volume fractions. Their mechanical and functional performance can therefore only be predicted and ensured based on precise knowledge of said microstructure. To that end, x-ray micro-computed tomography (μCT) is com...
Source: Composites Science and Technology - July 27, 2019 Category: Science Source Type: research

Snap-through and stiffness adaptation of a multi-stable Kirigami composite module
This study proposes a “Kirigami composite” concept to help address this challenge. By strategically placing slit cuts into the composite laminate with carefully designed fiber layout, one can release the internal constraints and significantly enrich the achievable shapes and adaptive functions. This study focuses on the elementary Kirigami composite module consisting of a single slit cut and two bistable patches. Experiments and finite element simulations show that this Kirigami module exhibits four different stable equilibria and its snap-through instability originates from a rapid “run-away” growt...
Source: Composites Science and Technology - July 25, 2019 Category: Science Source Type: research

Enhancement of the mechanical properties of basalt fiber-reinforced polyamide 6,6 composites by improving interfacial bonding strength through plasma-polymerization
This study aimed to develop basalt fiber (BF)/polyamide (PA) 6,6 thermoplastic composites with high strength and light-weight, by employing BF as an environmentally friendly reinforcing material and applying plasma polymerization for improving the interfacial bonding strength between BF and PA6,6. 3-aminopropyltriethoxysilane (APTES) was used as a precursor for BF surface modification. Plasma polymerization of the APTES was applied to the BF surface for 3, 5, 7, and 9 min. The reaction mechanism during plasma polymerization was investigated and compared to that from a conventional solution dipping method. We examined the...
Source: Composites Science and Technology - July 24, 2019 Category: Science Source Type: research

Microstructural and mechanical properties of biocomposites made of native starch granules and wood fibers
Publication date: Available online 23 July 2019Source: Composites Science and TechnologyAuthor(s): Arnaud Regazzi, Maxime Teil, Pierre J.J. Dumont, Barthélémy Harthong, Didier Imbault, Robert Peyroux, Jean-Luc PutauxAbstractNovel biocomposites were fabricated using preforms of unmodified starch powder and wood pulp fibers. Stacks of preforms were consolidated using thermo-compression (TCM) and ultrasonic compression moldings (UCM). The characterization of the microstructure of the biocomposites showed that TCM enabled a better preservation of the crystallinity of starch granules during their welding than UCM....
Source: Composites Science and Technology - July 24, 2019 Category: Science Source Type: research

Microwave assisted sinter molding of polyetherimide/carbon nanotubes composites with segregated structure for high-performance EMI shielding applications
Publication date: Available online 22 July 2019Source: Composites Science and TechnologyAuthor(s): Dong Feng, Qingqing Wang, Dawei Xu, Pengju LiuAbstractThe formation of segregated conductive structure in a polymer matrix can remarkably improve the electrical and EMI shielding performance. Nevertheless, the insufficient interfacial bonding force among polymer domains generated during the conventional hot compressing process will seriously deteriorate the mechanical property of the final composite. Herein, high-performance polyetherimide/carbon nanotubes (PEI/CNTs) composites with segregated structure were facilely fabricat...
Source: Composites Science and Technology - July 23, 2019 Category: Science Source Type: research

Novel modified distribution functions of fiber length in fiber reinforced thermoplastics
Publication date: Available online 22 July 2019Source: Composites Science and TechnologyAuthor(s): Dayong Huang, Xianqiong ZhaoAbstractAmongst the present prediction models of mechanical properties, the Weibull distribution has been introduced to describe the fiber length distribution. However, the Weibull distribution cannot capture the long tail decay, leading to underestimation of the fiber length factor (χ2). For the first time, two novel modified distribution functions are proposed based on Erlang-2 distribution and Weibull distribution, respectively. The modified Erlang distribution is derived from introducing a ...
Source: Composites Science and Technology - July 23, 2019 Category: Science Source Type: research

Chemical grafting of nano-SiO2 onto graphene oxide via thiol-ene click chemistry and its effect on the interfacial and mechanical properties of GO/epoxy composites
Publication date: Available online 22 July 2019Source: Composites Science and TechnologyAuthor(s): Mingye Wang, Lichun Ma, Longlong Shi, Peifeng Feng, Xuejie Wang, Yingying Zhu, Guangshun Wu, Guojun SongAbstractA facile and rapid come close to the manufacture of advanced epoxy nanocomposites by grafting of nano-silicon dioxide (nano-SiO2) onto the graphene oxide (GO) through thiol-ene click reaction was reported. The correlations between surface modification, morphology, dispersion/exfoliation, interfacial interaction of sheets and the corresponding mechanical properties of the composites were methodically explored. It app...
Source: Composites Science and Technology - July 23, 2019 Category: Science Source Type: research

Flexible, stretchable and electrically conductive MXene/natural rubber nanocomposite films for efficient electromagnetic interference shielding
Publication date: Available online 22 July 2019Source: Composites Science and TechnologyAuthor(s): Jia-Qi Luo, Sai Zhao, Hao-Bin Zhang, Zhiming Deng, Lulu Li, Zhong-Zhen YuAbstractThe rapid popularity of portable and wearable electronics requires high-performance flexible electromagnetic interference (EMI) shielding materials to cope with increasingly severe electromagnetic wave pollution problems. To combine outstanding EMI shielding performance and excellent mechanical flexibility, we demonstrate an efficient vacuum-assisted filtration approach for the fabrication of flexible and highly conductive Ti3C2Tx MXene/natural r...
Source: Composites Science and Technology - July 23, 2019 Category: Science Source Type: research

Ultrathin iron phenyl phosphonate nanosheets with appropriate thermal stability for improving fire safety in epoxy
Publication date: Available online 20 July 2019Source: Composites Science and TechnologyAuthor(s): Qinghong Kong, Youliang Sun, Caijiao Zhang, Haomin Guan, Junhao Zhang, De-Yi Wang, Feng ZhangAbstractNovel ultrathin iron phenyl phosphonate (FePP) nanosheets has been devised and synthesized with appropriate thermal stability for epoxy resin (EP), which was incorporated into EP matrix for preparing uniformly dispersed EP/FePP nanocomposites with intercalated structure. The results indicate that the incorporation of FePP nanosheets greatly improve the thermal stability and residual yield at higher temperature. When the amount...
Source: Composites Science and Technology - July 21, 2019 Category: Science Source Type: research

Computationally fast morphological descriptor-based microstructure reconstruction algorithms for particulate composites
Publication date: Available online 19 July 2019Source: Composites Science and TechnologyAuthor(s): Hangil You, Yeonghwan Kim, Gun Jin YunAbstractIn this paper, we propose a series of novel algorithms for microstructure reconstruction based on constituent morphologies. The proposed algorithm can generate statistically equivalent representative volume elements (RVE) from shape repository consisting of the actual particles from micro-computed tomography (CT) images. The reconstruction algorithm is also general in that it can adopt any morphological descriptors. CDFs errors of the morphological descriptors between the targeted...
Source: Composites Science and Technology - July 19, 2019 Category: Science Source Type: research

Genipin-enhanced nacre-inspired montmorillonite-chitosan film with superior mechanical and UV-blocking properties
Publication date: Available online 19 July 2019Source: Composites Science and TechnologyAuthor(s): Benliang Liang, Yingqi Shu, Pan Wan, Hewei Zhao, Shaohua Dong, Weichang Hao, Penggang YinAbstractChitosan, as a functional material, has special characteristics: biocompatibility, biodegradability and sterilizable properties, suitable for use in many fields. However, the weak mechanical properties of this material limit its applications. Herein, inspired by the relationship between the hierarchical “brick-and-mortar” structure and excellent mechanical properties of natural nacre, monolayer montmorillonite sheet wa...
Source: Composites Science and Technology - July 19, 2019 Category: Science Source Type: research

Corrigendum to ‘experimental investigation on graphene oxides coated carbon fibre/epoxy hybrid composites: Mechanical and electrical Properties’[Compos. Sci. Technol. 179 (2019) 134–144]
Publication date: Available online 18 July 2019Source: Composites Science and TechnologyAuthor(s): Lokasani Bhanuprakash, Sampath Parashuram, Soney Varghese (Source: Composites Science and Technology)
Source: Composites Science and Technology - July 18, 2019 Category: Science Source Type: research

Microwave loss percolation effect and microwave self-healing function of FeNip/PP nanocomposites
Publication date: Available online 16 July 2019Source: Composites Science and TechnologyAuthor(s): Ruru Bai, Hanzhe Zhu, Diyin Xie, Zhenghou Zhu, Qi Zhong, Jie Chen, Hui Zhao, Dengyu LiuAbstractBased on the study of microwave loss percolation effect of FeNip/PP nanocomposites, the microwave healing technology of FeNip/PP nanocomposites was proposed and its mechanism was studied. There is a unique microwave loss percolation characteristic between the microwave loss factor (tanδ) of FeNip/PP nanocomposites and the content of FeNi powders (0–20 wt%), and the percolation area is the range of 2–10 wt%. The...
Source: Composites Science and Technology - July 17, 2019 Category: Science Source Type: research

Cellulose nanocrystal-polyetherimide hybrid nanofibrous interleaves for enhanced interlaminar fracture toughness of carbon fibre/epoxy composites
Publication date: Available online 15 July 2019Source: Composites Science and TechnologyAuthor(s): Jing Wang, Thomas R. Pozegic, Zhen Xu, Rinat Nigmatullin, Robert L. Harniman, Stephen J. EichhornAbstractThe effect of electrospun cellulose nanocrystals (CNCs)-polyetherimide (PEI) hybrid nanofibrous mats on Mode I and Mode II interlaminar fracture toughness of unidirectional carbon/epoxy composite laminates is demonstrated. It is shown that the CNCs reinforced PEI nanofibrillar interleaves result in a ∼28% increase in Mode I initial fracture toughness values compared to neat PEI nanofibrous interleaves. Specifically, th...
Source: Composites Science and Technology - July 16, 2019 Category: Science Source Type: research

Two-dimensional layered double hydroxides nanoplatelets assembled in situ on SiO2 nanoparticles for high-performing hydrogenated nitrile butadiene rubber
Publication date: Available online 15 July 2019Source: Composites Science and TechnologyAuthor(s): Yanan Wang, Fanghui Wang, Sai Gao, Yonglai Lu, Jianjun Liu, Hong ZhuAbstractA series of layered double hydroxide nanoplatelets-silica (LDH-SiO2) nanocomposites were assembled in situ and utilized for improving hydrogenated nitrile butadiene rubber (HNBR). The composition, morphology, and structure of both the hybrid fillers and the HNBR composites were characterized. The effects of the LDH nanoplatelets and LDH-SiO2 nanocomposites on the properties of HNBR were studied. The results show that the assembly of two-dimensional (2...
Source: Composites Science and Technology - July 16, 2019 Category: Science Source Type: research

Enhanced thermal conductivity of benzoxazine nanocomposites based on non-covalent functionalized hexagonal boron nitride
Publication date: Available online 16 July 2019Source: Composites Science and TechnologyAuthor(s): Lin Chen, Kui Li, Bo Li, Dengxun Ren, Sijing Chen, Mingzhen Xu, Xiaobo LiuAbstractHigh thermal conductivity composites with ideal electrical properties have a wide potential application of electronic packaging systems in aerospace, electrical and electronic fields. Hexagonal boron nitride (h-BN) has been widely used in heat conduction systems due to its good insulation and thermally conductivity. However, its application has been limited due to its surface inertness and low strength. In this work, dopamine (DA) was used to pr...
Source: Composites Science and Technology - July 16, 2019 Category: Science Source Type: research

On the optimal design of manufacturing-induced residual stresses in filament wound carbon fiber composite cylindrical shells reinforced with carbon nanotubes
Publication date: Available online 16 July 2019Source: Composites Science and TechnologyAuthor(s): Behzad Asghari, Ahmad Reza Ghasemi, Ali TabatabaeianAbstractProcess-induced residual stresses occur in composite structures composed of dissimilar materials. As these residual stresses could result in fracture, their consideration when designing composite parts is necessary. In this research, the residual stresses behavior is characterized in terms of three manufacturing features including ‘environmental’, ‘materialistic’ and ‘dimensional’ features. In experimental part, after the fabricati...
Source: Composites Science and Technology - July 16, 2019 Category: Science Source Type: research

Assessment of the ablation characteristics of carbon/phenolic composites using X-ray microtomography
In this study, the ablation characteristics of carbon/phenolic composites were evaluated using X-ray microtomography. The ablation tests of carbon/phenolic composites were performed using a 0.4 MW arc-heated wind tunnel, and the composite samples were scanned using micro-computed tomography (Micro-CT) to analyze the ablation characteristics according to the duration of the ablation test. Through calibration of the scanned raw images, ∼2,000 cross-sectional images were generated with micrometer level intervals. Using these obtained cross-sectional images, the porosity and density distributions in the longitudinal dire...
Source: Composites Science and Technology - July 15, 2019 Category: Science Source Type: research

3D printed continuous fibre-reinforced composites: Bio-inspired microstructures for improving the translaminar fracture toughness
Publication date: Available online 12 July 2019Source: Composites Science and TechnologyAuthor(s): Yentl Swolfs, Silvestre T. PinhoAbstractTranslaminar fracture toughness is a vital property governing the notch sensitivity and damage tolerance of composites. Nature has shown that incorporating material transitions can increase toughness significantly. This work presents finite element models demonstrating that such transitions can indeed increase the translaminar fracture toughness. The designed microstructures were then 3D printed using continuous glass and carbon fibres. The specimens consisted primarily of glass fibres,...
Source: Composites Science and Technology - July 13, 2019 Category: Science Source Type: research

Design of remotely, locally triggered shape-memory materials based on bicontinuous polylactide/epoxidized natural rubber thermoplastic vulcanizates via regulating the distribution of ferroferric oxide
Publication date: Available online 13 July 2019Source: Composites Science and TechnologyAuthor(s): Jiarong Huang, Jianfeng Fan, Shiheng Yin, Yukun ChenAbstractIn this work, we successfully designed remotely, locally thermal/magnetic/light triggered shape memory biobased polylactide/epoxidized natural rubber thermoplastic vulcanizates (PLA/ENR TPVs) via regulating the distribution of ferriferrous oxide (Fe3O4). The TPVs exhibited novel bicontinuous structure, which played a vital role in shape memory effect (SME). The distribution of Fe3O4 in the TPVs was regulated by changing the feeding sequence of Fe3O4 during the dynami...
Source: Composites Science and Technology - July 13, 2019 Category: Science Source Type: research

Editorial Board
Publication date: 8 September 2019Source: Composites Science and Technology, Volume 181Author(s): (Source: Composites Science and Technology)
Source: Composites Science and Technology - July 13, 2019 Category: Science Source Type: research

Publisher's Note
Publication date: 8 September 2019Source: Composites Science and Technology, Volume 181Author(s): (Source: Composites Science and Technology)
Source: Composites Science and Technology - July 13, 2019 Category: Science Source Type: research

Improved out-of-plane strength and weight reduction using hybrid interface composites
Publication date: Available online 12 July 2019Source: Composites Science and TechnologyAuthor(s): Filip Stojcevski, Daniel J. Eyckens, James D. Randall, Lucas I. Marinovic, Gaspard Méric, Luke C. HendersonAbstractCarbon fiber composites with increased fiber-to-matrix bonding are often susceptible to premature failure due to the creation of overly rigid interfaces. This paper investigates the use of electrochemically functionalised carbon fibers used in novel ‘hybrid interface’ arrangements to improve out-of-plane bending. An improvement of 103.6% in single fiber interfacial shear strength (IFSS) was abl...
Source: Composites Science and Technology - July 12, 2019 Category: Science Source Type: research