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Photostable selenium-assisted ZnS nanocomposite with efficient visible light photocatalytic activity Funct. Compos. Struct. Pub Date : 2024-02-28 Alveera Sohel, Sarika Singh
Selenium-assisted ZnS nanocomposite has been successfully prepared through a simple soft chemical route and their photocatalytic activity was also investigated for degradation of methylene and rhodamine B dye under ultraviolet and sunlight irradiation. Various surface analysis techniques such as XRD, SEM, TEM, UV-visible, XPS, and photoluminescence were used to analyze the formation of Se/ZnS nanocomposites
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Numerical analysis of functionally graded piezoelectric bionic fishtail based on Hermite element-free method Funct. Compos. Struct. Pub Date : 2024-02-26 Xiao Ma, Bo Zhou, Changhe Li, Yanbin Zhang, Min Yang, Benkai Li, Mingzheng Liu, Xin Cui
Piezoelectric bionic fishtails have good flexibility, response speed, anti-interference ability, and have great application prospects in ocean exploration. However, the inherent drawbacks of the mechanical properties of traditional homogeneous piezoelectric materials significantly affect the propulsion performance and reliability of the piezoelectric bionic fishtails. To fill this gap, this paper develops
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Potential and applications of auxetic tubular: a review Funct. Compos. Struct. Pub Date : 2024-02-08 Mohammad Javad Ramezani, Omid Rahmani
Auxetic materials, possessing a negative Poisson’s ratio, can be arranged in various geometric configurations, such as tubular structures. Unlike conventional materials, which contract in lateral dimensions when stretched longitudinally, auxetic tubular expands in response to applied forces. This comprehensive review article amalgamates the latest experimental data and insights from preceding scholarly
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Impact of nano crack and loading direction on the tensile features of FeCr alloy: a molecular dynamics analysis Funct. Compos. Struct. Pub Date : 2024-01-17 S Gowthaman, T Jagadeesha
The existence of cracks and variations in loading direction has invoked greater modifications in the material properties. In this work, the tensile features of cracked and non-cracked FeCr polycrystals have been analyzed under numerous temperatures (300 K, 500 K, 700 K, and 900 K) and loading directions (parallel and normal to the crack cross-sectional directions) through molecular dynamics and it
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An effective hybrid particle swarm—artificial neural network optimization for predicting green bio-fiber mechanical characteristics and optimizing biomaterial performance Funct. Compos. Struct. Pub Date : 2024-01-12 Nashat Nawafleh, Faris M Al-Oqla
Natural fiber-reinforced composites are currently utilized in several applications due to worldwide environmental and cost concerns. However, these composites have production challenges such as poor reinforcement-matrix adhesion, that sophisticates the prediction of their mechanical properties. This study presents a novel, robust hybrid particle swarm—artificial neural network optimization (PSO-ANN)
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The buckling performance of a piezoelectric laminated composite plate via static method Funct. Compos. Struct. Pub Date : 2023-12-13 Chenyang Mao, Lei Liu, Bo Zhou, Xiuxing Zhu, Haijing Wang
Piezoelectric materials are widely used as actuators, due to the advantages of quick response, high sensitivity and linear strain-electric field relationship. The previous work on the piezoelectric material plate structures are not enough, however such structures play a very important role in the practical design. In this paper, the buckling performance of piezoelectric laminated composite plate (PLCP)
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A review of high-performance carbon nanotube-based carbon fibers Funct. Compos. Struct. Pub Date : 2023-12-05 Dongju Lee, So Jeong Heo, Seo Gyun Kim, Bon-Cheol Ku
With the growing importance of high-performance carbon fibers (CFs), researches have been conducted in many applications such as aerospace, automobile and battery. Since conventional CFs which were made from polyacrylonitrile, pitch and cellulose display either high tensile strength or high modulus properties due to structural limitations, it has been a challenge to develop CFs with both tensile strength
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Highly efficient and reliable numerical approach for predicting automotive hood displacement: consideration of composite materials and weatherstrip structures Funct. Compos. Struct. Pub Date : 2023-11-24 Gyeongsik Ryu, Bumyong Yoon, Jinsoo Shin, Chul Hong Rhie, Jonghwan Suhr
The automotive hood, a closure system for the engine compartment, must be mounted in a suitable position to avoid irregular gaps and flushes when it is initially assembled. The hood panel is mounted with an elastomer part called weatherstrip that is generally made of ethylene propylene diene monomer foam material to seal and reduce vehicle vibration and whistling noise. Because the elastomer material
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Evaluation of the damping characteristics of a hybrid piezo-shunt nanocomposite using a two-step homogenization approach Funct. Compos. Struct. Pub Date : 2023-11-10 S B Sedighi, R Sarfaraz, P Safarpour
Composite materials containing piezoelectric particles have attracted remarkable attention because of their distinctive electromechanical conversion characteristics. These supreme properties lead to their applications in various fields, such as vibration damping of structures. The damping parameter of dynamic systems is crucial, especially when they undergo resonance phenomena. Multi-phase polymer
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Fabrication and characterization of magneto-responsive polyvinyl alcohol–alginate composite hydrogel beads for the removal of cationic dyes from aqueous solutions Funct. Compos. Struct. Pub Date : 2023-11-09 Nann Aye Mya Mya Phu, Ganghoon Jeong, Eunsol Wi, Keun Seong Kim, Jae-Pil Gim, Jeong Woo Yun, Mincheol Chang
In this study, magneto-responsive polyvinyl alcohol–alginate hydrogel beads are successfully fabricated using the electrospraying technique and applied as efficient adsorbents for the removal of cationic dyes, particularly malachite green (MG) and methylene blue (MeB), from water. The successful synthesis of the beads is confirmed using optical microscopy, Fourier transform infrared spectroscopy, and
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Effect of hybridization on camphor soot-embedded palmyra fiber-reinforced nylon nanocomposites Funct. Compos. Struct. Pub Date : 2023-11-07 T Raghavendra, Niranjan C A, M Shilpa, Panneerselvam K, Akriti Singh
In the present study, camphor soot-filled palmyra fiber-reinforced nylon-6 hybrid nanocomposites (CPFNnC) were prepared using a twin-screw extruder with different wt% of CPFNnC (0, 3, 6 or 9 wt%). These composites were characterized to study their thermal, mechanical and rheological properties. Thermogravimetric analysis showed a marginal increase in thermal stability with 6 wt% CPFNnC. Differential
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Fabrication and peeling behavior of thermally conductive pressure-sensitive adhesive films with embedded graphite composite patterns Funct. Compos. Struct. Pub Date : 2023-10-04 Sang-Ah Oh, Sangwoong Baek, Hyesun Yun, Min-Gi Kwak, Chan-Jae Lee, Youngmin Kim
Thermal interface materials (TIMs) have been widely employed to address the thermal issues arising in electronics. Given that heat generated at heat sources is dissipated into heat sinks through TIMs, the softer they are, the more efficient the heat transfer is. In this paper, a thermally conductive pressure-sensitive adhesive (PSA) film (gr-PSA film) in which graphite composite patterns were embedded
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Analysis of Al–Mg–Si alloy reinforced with optimal palm kernel shell ash particle and its impact on dynamic properties for sounding rocket application Funct. Compos. Struct. Pub Date : 2023-10-03 Elijah Oyewusi Oyedeji, Mohammed Dauda, Shehu Aliyu Yaro, Malik Abdulwahab, Ayodeji Nathaniel Oyedeji
Due to heavy usage and rising populations, there is a growing need for local and naturally derived materials in the automotive and aerospace industries. Furthermore, due to their excellent mechanical qualities and high strength-to-weight ratio, composite materials are expected to perform better than traditional materials, particularly in automotive and aerospace applications. According to this perspective
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Impact crushing response of additively manufactured hybrid metal-composite structures—a state of the art review Funct. Compos. Struct. Pub Date : 2023-09-28 A Praveen Kumar, A Keshav Kumar
Thin-walled energy absorbing structures based on hybrid structural concepts have a lightweight benefit along with great potential of enhancing the crashworthiness characteristics. Inspired by the huge number of research investigations performed on novel additively manufactured hybrid metal-composite configurations and their latest developments, the current review article extensively reports the latest
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Highly stable functionalized PAN/Zr nanofibrous mats for removal of ultralow concentrations of Hg (II) Funct. Compos. Struct. Pub Date : 2023-09-22 Reena Sharma, Sangeeta Tiwari, Nahar Singh, Sandeep Kumar Tiwari, Sanjay R Dhakate
Nanofibrous mats of polyacrylonitrile loaded with zirconia (PAN/Zr) have been fabricated and reported for the first time for effective removal of Hg (II) from water. The formation, morphology and adsorption characteristics of the composite nanofibrous mats were determined using scanning electron microscopy, Fourier transform infrared spectroscopy, x-ray diffraction and x-ray photoelectron spectroscopy
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Study on the influence of temperature and strain rate on the tensile behavior of Ti–5Mo–5Cu alloy biomaterial alloy: a molecular dynamics simulation Funct. Compos. Struct. Pub Date : 2023-09-18 S Gowthaman
The development of efficient biomedical bone tissue implants has invoked significant impact in the biomedical research fields and aids the aged populated peoples. In this examination, the mechanical features of implant material (Ti–5Mo–5Cu alloy) has been investigated using the molecular dynamics method under varying temperature and strain rate to understand its physical phenomenon and through this
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Contact–separation mode triboelectric nanogenerator utilizing carbon-fiber composite structure for harvesting mechanical energy Funct. Compos. Struct. Pub Date : 2023-09-18 Seonghwan Lee, Young-Bin Park
The rapid depletion and adverse environmental impacts of fossil fuels necessitate the development of alternative sources of sustainable and ecofriendly energy to address the increasing energy demand due to population growth and technological advancement. Energy harvesting is a major strategy for the generation of sustainable and clean energy. It involves the scavenging and subsequent conversion of
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Electrical resistance-based monitoring of CFRP thickness during vacuum assisted resin infusion Funct. Compos. Struct. Pub Date : 2023-09-14 Woo Nam Jeong, Moon-Kwang Um, Wie-Dae Kim, Hyung Doh Roh
During vacuum-assisted resin infusion (VARI), the thickness of the fabric manufactured into carbon fiber (CF)-reinforced plastic was monitored using electrical resistance, which was correlated with the mechanical and electrical status of the CF with respect to resin infiltration. Furthermore, the electrical network within CF varied in terms of its volume and number of electrical contacts. These phenomena
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Low velocity impact performance of natural fibre reinforced polymer composites: a review Funct. Compos. Struct. Pub Date : 2023-09-06 Mohammed Huzaifa Mulla, Mohd Nurazzi Norizan, Che Ku Abdullah, Nurul Fazita Mohd Rawi, Mohamad Haafiz Mohamad Kassim, Norli Abdullah, Mohd Nor Faiz Norrrahim, M Soudagar Manzoore Elahi
Natural fibre-reinforced polymer composites (NFRPC) are versatile and applicable materials for structural applications that require durability and reliability under various forces. However, these composites are susceptible to crack formation when exposed to low-velocity impact (LVI) loads, compromising their functionality and performance. Therefore, it is essential to investigate the influence of LVI
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Bio-functionalized, elongated hexagonal bi-pyramidal, citrus limetta/ZnO nanostructures as potential photocatalytic and seed germinating agents Funct. Compos. Struct. Pub Date : 2023-08-31 Jyoti Gaur, Sanjeev Kumar, Mohinder Pal, Harpreet Kaur, Ramneet Kaur Rana, Kanchan Bala, Prit Pal Singh, Changanamkandath Rajesh, Supreet7
In this research, the photocatalytic and seed germination potentials of bio-functionalized, as-synthesized zinc oxide (ZnO) nanoparticles (NPs) were investigated. ZnO NPs were created by reducing zinc acetate hexahydrate with a citrus limetta (C. limetta) peel extract. The hexagonal wurtzite crystal was observed in C. limetta/ZnO NPs, with crystallite diameters ranging from 50 to 60 nm and an energy-band
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Influence of a powder-forming additive on the physical-mechanical properties and structure of a ceramic material Funct. Compos. Struct. Pub Date : 2023-08-29 Sarsenbek A Montayev, Kanat A Narikov, Bekbulat T Shakeshev, Ainur A Taudaeva, Karzhaubai Zh Dosov
The purpose of the study was to explore the effect of various pore-forming additives on the porosity and permeability of alumina ceramic material. Analysis of mineralogical, particle size distribution and chemical composition of raw materials and ceramics samples was performed using standard research methods, JCM-6000 (JEOL) and field emission scanning electron microscopy (FESEM) microscopes, LW600LT
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Influences of nano-SiO2 on the tensile, flexural, and compressive characteristics of the open-hole carbon fiber-reinforced polymer laminated composites: experimental study Funct. Compos. Struct. Pub Date : 2023-07-11 Reza Emrahi, Yasser Rostamiyan, Mehdi Hashemi-Tilehnoee
Carbon fiber are of great importance materials exploited in various industrial applications in the recent years. Because of its strong flexural and compressive properties, these fibers have been commonly utilized as a reinforcement for producing polymer composite laminates. Carbon fiber-reinforced polymer (CFRP) laminates are subjected to extreme forces and damaged. In the component assembly of the
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The effect of geometrical parameters on blast resistance of sandwich panels—a review Funct. Compos. Struct. Pub Date : 2023-07-03 Orhan Gülcan, Kadir Günaydın, Aykut Tamer
Many engineering structures, especially defense applications, need to be reinforced against blast loads due to a nearby explosion. Today, much more attention needs to be given to this issue because of increased exposure to explosions, and natural disasters. Different solutions have been used in the literature to mitigate blast-loading effects. One of these applications, sandwich panels, are a good
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Evaluation of interlaminar shear strength of co-cured fiber-reinforced fabric composite structures by lap joint method Funct. Compos. Struct. Pub Date : 2023-06-21 Jae-An Jeon, Sang-Eui Lee
Interlaminar shear strength (ILSS) indicates the resistance to interlaminar delamination of fiber-reinforced composite structures. The short beam shear (SBS) method has been commonly used for ILSS measurement, but unwanted failure modes can appear like a compressive or tensile failure in surface, and diagonal shear failure, causing poor measurement accuracy. The lap joint method has advantage that
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Thermally tunable vanadium-dioxide-based broadband metamaterial absorber with switchable functionality in the terahertz band Funct. Compos. Struct. Pub Date : 2023-05-18 Chongyang Xu, Guiyuan Duan, Wei Xu, Xingzhu Wang, Yang Huang, Xiangyang Zhang, Huaxin Zhu, Ben-Xin Wang
In this paper, a thermally tunable broadband metamaterial absorber, with switchable functionality in the terahertz band, consisted of periodically arranged vanadium dioxide (VO2) and a gold film separated by a layer of polyimide is reported, which is capable of switching from absorber to reflector through the phase change property of VO2. When VO2 is in the metallic state, three near-perfect absorption
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Development of multiscale analysis method for predicting thermo-mechanical properties of polymeric nanocomposites containing clustered nanoparticles Funct. Compos. Struct. Pub Date : 2023-04-24 Jihun Lee, Jae Hun Kim, Haolin Wang, Hyunseong Shin
Thermo-mechanical properties of polymeric nanocomposites containing clustered nanoparticles are investigated using molecular dynamics (MD) simulation. Comparing between the dispersion and cluster models, it is revealed that the thermo-mechanical properties are decreased due to the clustering phenomenon. For effectively predicting the thermo-mechanical properties of polymeric nanocomposites, a multiscale
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PEG functionalized ZnO nanoparticles by fusion of precipitation-cum-hydrothermal method with enhanced photocatalytic activity Funct. Compos. Struct. Pub Date : 2023-04-20 Jyoti Gaur, Mohinder Pal, Sanjeev Kumar, Harpreet Kaur, Gurmeet Singh Lotey, Kanchan Bala, Supreet6, Arshdeep Kaur
In this study, polyethylene glycol (PEG)-aided zinc oxide (ZnO) nanoparticles (NPs) have been synthesized by fusion of precipitation-cum-hydrothermal method. The PEG/ZnO NPs were investigated by x-ray diffraction (XRD), Fourier-transform infrared (FTIR) transformation, UV-visible field emission scanning electron microscope (FESEM), energy dispersive x-ray, high resolution transmission electron microscope
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Production and optimization of the refractory properties of blended Nigerian clay for high-temperature application; a non-stochastic optimization approach Funct. Compos. Struct. Pub Date : 2023-04-19 Hassan Abubakar Adamu, Bassey Okon Samuel, Abutu Joseph, Samuel Samuel Okon, Iliyasu Idris Kirim
High-performance materials, systems, and processes have necessitated the exploration of very high-temperature environments. Materials, particularly ceramics, which can withstand these high temperatures, have been extensively studied, even though enough emphasis has not been given to clays sourced locally in Nigeria, where there is an abundance. Also, stochastic optimization techniques has been employed
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A review on mechanical and material characterisation through molecular dynamics using large-scale atomic/molecular massively parallel simulator (LAMMPS) Funct. Compos. Struct. Pub Date : 2023-03-23 S Gowthaman
Molecular dynamics (MD) simulation continues to be one of the most advanced tools in a wide range of fields and applications. The motion of atoms or molecules at various temperatures and pressures was analysed and visualised using the MD simulation through large-scale atomic/molecular massively parallel simulator (LAMMPS). This research focuses on a basic introduction to MD, as well as their determination
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Tribological properties of hemp fiber reinforced polylactic acid bio-composites: effect of different types of modification methods Funct. Compos. Struct. Pub Date : 2023-03-17 Nurhan Çevik Elen, Musa Yıldırım, Yasin Kanbur
In this study, green composites are prepared with 30 wt.% hemp fibers reinforced polylactic acid (PLA) to enhance the impact and tribological properties. Different surface treatments of alkali and silane, compatibilizer of maleic anhydride (MA), and blends of thermoplastic polyurethane (TPU) and poly (butylene succinate) were applied to improve interfacial adhesion between fibers and matrix. Hemp-reinforced
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Optimization and statistical modeling of the thermal conductivity of a pumice powder and carbonated coal particle hybrid reinforced aluminum metal matrix composite for brake disc application: a Taguchi approach Funct. Compos. Struct. Pub Date : 2023-03-16 Tanimu Kogi Ibrahim, Danjuma Saleh Yawas, Bashar Danasabe, Adetayo Abdulmumin Adebisi
Aluminum metal matrix composites have been gaining traction in recent years due to their good mechanical properties and low weight. Particulate reinforcements for the improvement of its properties have been explored. This research aimed to determine the optimal composition of the reinforcement content (pumice powder and carbonated coal particles) and processing parameters (stirring speed, processing
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Structural integrity and performance investigations of a novel chemically treated cellulosic paper corn/polyester sustainable biocomposites Funct. Compos. Struct. Pub Date : 2023-03-13 Faris M AL-Oqla, Mohammed T Hayajneh, M E Hoque
Facilitating finding low-cost renewable and sustainable environmental functional alternative materials for green products has been recently emphasized. Lignocellulosic materials are of such potential alternatives to enhance the modern cleaner production theme. In this work, several structural parameters, reinforcement conditions, and chemical treatments have been investigated to reveal their effects
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3D printing-based soft auxetic structures using PDMS-Ecoflex Hybrid Funct. Compos. Struct. Pub Date : 2023-03-13 Chae-Hwan Kim, Hyun-Young Kim, Jun-Ho Kim, Jaehwan Kim
Auxetic structures with negative Poisson’s ratio have received much attention due to their attractive behavioral properties in next-generation metamaterials and robotic applications. However, until now, there has been a lack of research into using soft materials to reliably develop a largely-deformable auxetic structures. Here, we develop soft polydimethylsiloxane (PDMS)-Ecoflex auxetic structures
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Evaluation of energy absorption enhancement of additively manufactured polymer composite lattice structures Funct. Compos. Struct. Pub Date : 2023-03-13 Praveen Kumar A, Quanjin Ma
The unique compressive behaviour of lattice cubic structures as well as their high specific strength and significant energy absorbing characteristics makes them an attractive solution for crashworthiness applications. Hence in this research study, the crashworthiness behaviour and energy absorbing characteristics of the thermoplastic polymer composite lattice cubic structures were experimentally investigated
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Bioinspired composites: nature’s guidance for advanced materials future Funct. Compos. Struct. Pub Date : 2023-03-07 Anna Cecília do Nascimento Pereira, Silvia Titotto
Biomimetics enables the use of nature as a source of inspiration for the elaboration of high-performance materials. In this scenario, the development of bioinspired composites emerges as a promising proposal, capable of generating technological innovation in numerous areas of engineering, considering the exceptional mechanical performance of materials of this kind. That said, this review article characterizes
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A review of the dynamic analysis and free vibration analysis on fiber metal laminates (FMLs) Funct. Compos. Struct. Pub Date : 2023-03-03 Quanjin Ma, M N M Merzuki, M R M Rejab, M S M Sani, Bo Zhang
It is a challenging target to improve the dynamic analysis and free vibration analysis of fiber metal laminates (FMLs) while providing great promise as lightweight structural components. FMLs have attracted increasing research interest in various multi-stack FML components to enlarge industrial applications. This review paper concentrates on the free vibration analysis of FMLs, which mainly refers
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Vibration analysis of sandwich cylindrical shells made of graphene platelet polymer–viscoelastic–ceramic/metal FG layers Funct. Compos. Struct. Pub Date : 2023-03-01 M R Permoon, T Farsadi, A R Askarian
In this paper, natural frequencies and loss factors of cylindrical sandwich shells composed of the viscoelastic core layer, surrounded by functionally graded graphene-platelet reinforced polymer composite (FG-GPLRPC) and ceramic/metal (FG-ceramic/metal) are investigated. The viscoelastic layer is modeled via the fourth parameter fractional viscoelastic pattern, and the functionally graded ceramic/metal
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Buckling behavior of fiber reinforced Innegra sandwich beams incorporating carbon nanofiber Funct. Compos. Struct. Pub Date : 2023-02-23 Rezvan Hosseini, Mehdi Yarmohammad Tooski, Ahmad Reza Khorshidvand, Seyed Mehdi Khorsandijou
This study examined the effect of carbon nanofiber (CNF) on the buckling behavior of sandwich beams under axial compressive load. Three different configurations of sandwich beams consisting of composite skins with different arrangement of layers and polyvinyl chloride (PVC) foam core were considered. Each composite skin is made of four layers reinforced with different materials consisting of Innegra
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Experimental and numerical investigation of the effect of graphene nanoparticles on the strength of sandwich structures under low-velocity impact Funct. Compos. Struct. Pub Date : 2023-02-14 Mahdi Rezvani Tavakol, Mahdi Yarmohammad Tooski, Mohsen Jabbari, Mehrdad Javadi
The effect of graphene nanoparticles on the strength of a sandwich panel structure based on foam core, which is inspired by the microstructure characteristics of dragonfly wings, has been investigated experimentally and numerically under low-velocity impact. Sandwich panel structures are made of E-glass/epoxy layers, and different percentages of graphene nanoparticles and combined with their resin
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Prospects and problems in the development of biochar-filled plastic composites: a review Funct. Compos. Struct. Pub Date : 2023-02-06 Adewale George Adeniyi, Kingsley O Iwuozor, Ebuka Chizitere Emenike, Mubarak A Amoloye, Emmanuel S Aransiola, Fawaz O Motolani, Sodiq H Kayode
This study is a review of published literature that discusses the utilization of biochar (BC) and plastics as filler and matrix, respectively, in a composite material. These composites, referred to as Biochar-filled plastic composites (BFPCs), play a significant role in the production of environmentally friendly materials. This paper provides an overview of BFPCs, their properties (mechanical, rheological
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Manufacturing of stereolithographic 3D printed boron nitride nanotube-reinforced ceramic composites with improved thermal and mechanical performance Funct. Compos. Struct. Pub Date : 2023-01-25 Mehul Tank, Ana De Leon, Wentao Huang, Mitesh Patadia, Joshua Degraff, Rebekah Sweat
Boron nitride nanotubes (BNNTs) are the perfect candidate for nanofillers in high-temperature multifunctional ceramics due to their high thermal stability, oxidation resistance, good mechanical properties, high thermal conductivity, and radiation shielding. In this paper, 3D printed ceramic nanocomposite with 0.1 wt% of BNNT was prepared by fusing it at high temperatures. Samples were built with three
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Investigating the low-velocity impact behaviour of sandwich composite structures with 3D-printed hexagonal honeycomb core—a review Funct. Compos. Struct. Pub Date : 2023-01-13 F Nur Ainin, M D Azaman, M S Abdul Majid, M J M Ridzuan
This study aims to comprehensively review previous and present research on the dynamic responses of 3D-printed sandwich composite structures. The low-velocity impact and failure mechanisms caused by the impact load and energy absorption capabilities are discussed. Investigating the processes and mechanics of a material is an essential step in addressing the structural failure problems, which are mostly
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Development of highly sensitive capacitive proximity sensor based on stacked monocharged electrets Funct. Compos. Struct. Pub Date : 2022-12-19 Donghan Lee, Sumin Cho, Sunmin Jang, Sung Jea Park, Dongwhi Choi
Recently, the demand for miniaturization and high sensitivity of the capacitive proximity sensors has increased noticeably for development of sensor networks. However, the volume and weight of conventional sensor devices are emerging as limitations in the practical application. In this paper, the stacked electrets-based highly sensitive noncontact capacitive sensor system (SENS) is proposed. The SENS
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Surface-modified carbon fiber for enhanced electromagnetic interference shielding performance in thermoplastic polyurethane composites Funct. Compos. Struct. Pub Date : 2022-12-16 Dongchan Yi, Gwajeong Jeong, Seong-Dae Park, Myong Jae Yoo, Hyunseung Yang
There has been a growing interest in developing carbon-based polymer composites for electromagnetic interference (EMI) shielding materials. To achieve a high EMI shielding performance, the morphology of fillers in composites must be controlled. Although carbon fibers (CFs) have remarkable thermal and electrical properties and low density, their poor dispersion behavior within polymer matrix limits
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Finite element-based homogenization model to determine effective properties of 0–3 and 1–3 electrostrictive composite Funct. Compos. Struct. Pub Date : 2022-12-12 Diwakar Singh, Rajeev Kumar, Rahul Vaish
Representative volume element (RVE) based finite element method is employed to evaluate all the effective properties of electrostrictive composite. The attention is paid to designing the periodic boundary conditions to be applied to RVEs of electrostrictive study. The present study is conducted on particulate and fiber electrostrictive composites, in which electrostrictive ceramic (Pb(Mg1/3Nb2/3)O3-PbTO3-
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Formation of tantalum coatings with a given structure on the surface of niti alloy by magnetron sputter deposition Funct. Compos. Struct. Pub Date : 2022-11-30 А S Larionov, А S Dikov, S О Akayev, L А Dikova, Е А Zhakanbayev, К B Sarsenbaeva
Way for applying tantalum coating with a given structure to the surface of an alloy with a shape memory effect NiTi to increase the biocompatibility of implants from this alloy is presented. The coating was synthesized by direct current (DC) magnetron sputtering. The changes sequence of the structural-phase states depending on the thickness of the coating, that is, the rate of its deposition, has been
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Self-powered hybrid triboelectric–piezoelectric electronic skin based on P(VDF-TrFE) electrospun nanofibers for artificial sensory system Funct. Compos. Struct. Pub Date : 2022-11-18 Sumin Cho, Sunmin Jang, Donghan Lee, Yoonsang Ra, Dongik Kam, Jong Woo Kim, Dongjin Shin, Kyoung Duck Seo, Dongwhi Choi
Piezoelectric sensors have been developed due to the self-powered sensing and flexibility and the promising potential applications in the electronic skin (e-skin) inspired by human skin. However, although the piezoelectric sensors have an excellent performance in detecting human movements, it is difficult to distinguish external mechanical stimuli such as tapping in a single structure, together. Here
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Development of large-scale electret fabrication system for triboelectric nanogenerator electrical output amplification Funct. Compos. Struct. Pub Date : 2022-11-17 Sunmin Jang, Sumin Cho, Donghan Lee, Yoonsang Ra, Dongik Kam, Jaehyun Lee, Gyuha Lee, Moonwoo La, Dongwhi Choi
The triboelectric nanogenerator (TENG), which converts mechanical energy to electrical output, is garnering attention owing to their application in low-energy electronic devices as a power source. To utilize the TENG as a power source, amplifying the electrical output and enhancing energy conversion efficiency are necessary. As the TENG generates electrical output through contact electrification and
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Solutions for elastic moduli of three-phase composite with random distribution of coated-ellipse inclusions Funct. Compos. Struct. Pub Date : 2022-10-31 Van-Luat Nguyen
Some solutions in this work are developed to estimate the elastic moduli of three-phase isotropic composite with random coated-ellipse inclusion in the matrix. Solutions to the macro-elastic moduli of materials in two-dimensional space using approximation and numerical methods including equivalent-inclusion (EI), polarization approximation (PA), differential approximations (DA), and fast Fourier transformation
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Influence of phosphorus-based flame retardants on polypropylene insulation for high-voltage power cable applications Funct. Compos. Struct. Pub Date : 2022-10-28 Do-Kyun Kim, Seong Hwan Lee, Shin-Ki Hong, Myung Sang Ahn, Se Won Han, Dae Ho Lee, Seunggun Yu
For high voltage (HV) power cable applications, various studies have been performed to improve the mechanical and electrical properties of polypropylene (PP)-based insulation materials to replace crosslinked polyethylene. However, studies on the effect of additives to yield additional PP properties are still lacking. Herein, we prepared PP blends by melt-mixing widely used commercial flame retardants
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Dynamic mechanical thermal analysis of unaged and hygrothermally aged discontinuous Bouligand structured CFRP composites Funct. Compos. Struct. Pub Date : 2022-10-21 Chidume Nwambu, Colin Robert, Parvez Alam
A dynamic mechanical thermal analyser operating in the single cantilever mode was used to examine the dynamic mechanical properties of unaged and hygrothermally aged discontinuous asymmetric helicoidal (Bouligand) carbon fibre reinforced plastic (CFRP) composites as a function of fibre architecture. The discontinuous Bouligand was manufactured using two major pitch angles as independent variables:
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Enhanced dispersion stability and interfacial damping of POSS-functionalized graphene oxide in PDMS nanocomposites Funct. Compos. Struct. Pub Date : 2022-09-30 Bogyoung Kim, Byungwook Youn, Yeeun Song, Doojin Lee
Polyhedral oligomeric silsesquioxane (POSS) functionalized graphene oxide (GO) is prepared to improve the dispersity of GO nanofillers in a polydimethylsiloxane matrix. Improved interfacial affinity of the GO-POSS with a polymer matrix is characterized by a small amplitude oscillatory shear test. We confirm that the POSS-functionalized GO induces better filler dispersibility and less filler aggregation
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Ultrasmall molybdenum-iron nitride nanoparticles confined carbon nanotubes hybrids for efficient overall water splitting Funct. Compos. Struct. Pub Date : 2022-09-30 Mun Sang Yun, Thanh Hai Nguyen, Duy Thanh Tran, Nam Hoon Kim, Joong Hee Lee
In an attempt to find an alternative approach to reduce the use of noble metal-based electrocatalysts, a new hybrid nanostructure based on molybdenum-iron nitride nanoparticles (Mo–Fe–N NPs) deposited carbon nanotubes (CNTs) supported on nickel foam substrate is fabricated via a facile synthetic approach. Highly uniform and dense Mo–Fe–N NPs achieves full coverage on surface of the CNTs with good interactions
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Low-velocity impact behavior of sandwich composite structure with 3D printed hexagonal honeycomb core: varying core materials Funct. Compos. Struct. Pub Date : 2022-09-23 F Nur Ainin, M D Azaman, M S Abdul Majid, M J M Ridzuan
Additive manufacturing technology is extensively used in aeronautical applications, especially in designing the sandwich composite structures for repair tasks. However, the composite structures are vulnerable to impact loadings because of their exposure to, for instance, loading field carriages, flying debris, and bird strikes. This may lead to crack propagation and ultimately the structural failure
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A study on the hybrid polystyrene composite filled with elephant-grass-biochar and doped-aluminium-content Funct. Compos. Struct. Pub Date : 2022-09-13 Adewale George Adeniyi, Sulyman A Abdulkareem, Joshua O Ighalo, Maryam T Abdulkareem, Kingsley O Iwuozor, Ebuka Chizitere Emenike
This study aimed to investigate the crystallographic, functional group and microstructural analysis of elephant grass biochar reinforced hybrid polystyrene composite doped with aluminium. The composites were prepared by the mixing and hand-layup technique. Composites were characterised by x-ray diffractometry, Fourier transform infra-red spectroscopy and scanning electron microscope. It was observed
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A comprehensive review on applications of 3D printing in natural fibers polymer composites for biomedical applications Funct. Compos. Struct. Pub Date : 2022-08-30 Jasgurpreet Singh Chohan, Raman Kumar, Sandeep Singh, Shubham Sharma, R A Ilyas
Over the past few decades, three-dimensional (3D) printing technologies have surpassed the conventional manufacturing techniques due to their wide applications and advantages. The applications of 3D printing in biomedical field is ever increasing due to improvement in accuracy and surface quality of products. The development of biomedical implants through patient specific data and rapid tooling techniques
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Integration of PCM as an external wall layer in reducing excessive heat of building walls Funct. Compos. Struct. Pub Date : 2022-08-22 Umi Nadiah Nor Ali, Norazman Mohamad Nor, Noor Aina Misnon, Siti Aminah Mohd Noor, Maidiana Othman, Muhammad Akmal Akif Alias, Agusril Syamsir
Innovative building approaches, which take advantage of heat energy in buildings, have recently appeared as part of a global effort to save energy. Incorporating phase change material (PCM) into the building envelope helps in reducing energy consumption and regulating energy demand by managing the thermal inertia of designed PCM thermal characteristics. A study was conducted to assess the performance
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Strain measurements of an aircraft wing using embedded CNT fiber sensor and wireless SHM sensor node Funct. Compos. Struct. Pub Date : 2022-08-19 Jinwoo Park, Jung-Ryul Lee
Composite material-based aircraft structures have attracted attention due to their lightweight and superior mechanical properties. However, composite structures have a high risk of structural failures when damages occur due to loadings or impacts. Therefore, consistent structural health monitoring (SHM) is needed to ensure the structural integrity and safety of the aircraft. Various methods of sensor
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Self-powered triboelectric sensor for cooling fan monitoring Funct. Compos. Struct. Pub Date : 2022-08-19 Hakjeong Kim, Hee Jae Hwang, Wook Kim, Seongchan Hong, Jongwon Yoon, Hyeongwook Lim, Dukhyun Choi
Since the COVID-19 pandemic began, the use of computers, Internet of things devices, and artificial intelligence applications has dramatically increased. For the operation of these devices, it is important to effectively control the thermal management systems. Cooling fans play an important role in air circulation and thermal management for many types of industrial machines. In the past, a disassembly
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Synthesis of porous cobalt oxide nanosheets: highly sensitive sensors for the detection of hydrazine Funct. Compos. Struct. Pub Date : 2022-08-11 Raj Kumar, Anand Parkash, Sikander Almani, Muhammad Yousuf Jat Baloch, Rizwan Khan, Suhail Ahmed Soomro
A highly sensitive, reliable, and reproducible sensor for detecting hydrazine was fabricated using a porous cobalt oxide (Co2O3) nanosheets electrode. The Caffeine assisted Co2O3 nanosheets were prepared by a low-temperature aqueous chemical growth method. The morphology, phase purity, and porosity of Co2O3 nanosheets were examined via SEM, XRD, and BET techniques. SEM results reveal the hexagonal