Download or read book Characterization and Modification of Graphene Based Interfacial Mechanical Behavior written by Guorui Wang and published by Springer Nature. This book was released on 2020-08-21 with total page 139 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis shares new findings on the interfacial mechanics of graphene-based materials interacting with rigid/soft substrate and with one another. It presents an experimental platform including various loading modes that allow nanoscale deformation of atomically thin films, and a combination of atomic force microscopy (AFM) and Raman spectroscopy that allows both displacement and strain to be precisely measured at microscale. The thesis argues that the rich interfacial behaviors of graphene are dominated by weak van der Waals force, which can be effectively modulated using chemical strategies. The continuum theories are demonstrated to be applicable to nano-mechanics and can be used to predict key parameters such as shear/friction and adhesion. Addressing key interfacial mechanics issues, the findings in thesis not only offer quantitative insights in the novel features of friction and adhesion to be found only at nanoscale, but will also facilitate the deterministic design of high-performance graphene-based nanodevices and nanocomposites.

Download or read book Handbook of Graphene Volume 4 written by Cengiz Ozkan and published by John Wiley & Sons. This book was released on 2019-06-28 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fourth volume in a series of handbooks on graphene research and applications The Handbook of Graphene, Volume 4: Composites looks at composite materials exclusively. Topics covered include graphene composites and graphene-reinforced advanced composite materials. The following graphene-based subjects are discussed: ceramic composites; composite nanostructures; composites with shape memory effect; and scroll structures. Chapters also address: the fabrication and properties of copper graphene composites; graphene metal oxide composite as an anode material in li-ion batteries; supramolecular graphene-based systems for drug delivery; and other graphene-related areas of interest to scientists and researchers.

Download or read book Innovations in Graphene Based Polymer Composites written by Sanjay Mavinkere Rangappa and published by Woodhead Publishing. This book was released on 2022-06-15 with total page 642 pages. Available in PDF, EPUB and Kindle. Book excerpt: Innovations in Graphene-Based Polymer Composites reviews recent developments in this important field of research. The book's chapters focus on processing methods, functionalization, mechanical, electrical and thermal properties, applications and life cycle assessment. Leading researchers from industry, academia and government research institutions from across the globe have contributed to the book, making it a valuable reference resource for materials scientists, academic researchers and industrial engineers working on recent developments in the area of graphene-based materials, graphene-based polymer blends and composites. Readers will gain insights into what has been explored to-date, along with associated benefits and challenges for the future. Presents a strong emphasis on synthesis methods, functionalization, processing and properties Includes chapters on characterization, electrical conductivity and modeling and simulation Provides recent advances in applications, including drawbacks and future scope

Download or read book Handbook of Graphene written by Cengiz Ozkan and published by John Wiley & Sons. This book was released on 2019-06-12 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fourth volume in a series of handbooks on graphene research and applications The Handbook of Graphene, Volume 4: Composites looks at composite materials exclusively. Topics covered include graphene composites and graphene-reinforced advanced composite materials. The following graphene-based subjects are discussed: ceramic composites; composite nanostructures; composites with shape memory effect; and scroll structures. Chapters also address: the fabrication and properties of copper–graphene composites; graphene–metal oxide composite as an anode material in li-ion batteries; supramolecular graphene-based systems for drug delivery; and other graphene-related areas of interest to scientists and researchers.

Download or read book Physics and Chemistry of Graphene written by Toshiaki Enoki and published by CRC Press. This book was released on 2013-01-24 with total page 478 pages. Available in PDF, EPUB and Kindle. Book excerpt: From a chemistry aspect, graphene is the extrapolated extreme of condensed polycyclic hydrocarbon molecules to infinite size. Here, the concept on aromaticity which organic chemists utilize is applicable. Interesting issues appearing between physics and chemistry are pronounced in nano-sized graphene (nanographene), as we recognize the importance of the shape of nanographene in understanding its electronic structure. In this book, the fundamental issues on the electronic, magnetic, and chemical properties of condensed polycyclic hyodrocarbon molecules, nanographene and graphene are comprehensively discussed.

Download or read book Dynamic Mechanical and Creep Recovery Behavior of Polymer Based Composites written by Akarsh Verma and published by Elsevier. This book was released on 2024-01-19 with total page 557 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dynamic Mechanical and Creep-Recovery Behaviour of Polymer-Based Composites: Mechanical and Mathematical Modeling covers mathematical modelling, dynamic mechanical analysis, and the ways in which various factors impact the creep-recovery behaviour of polymer composites. The effects of polymer molecular weight, plasticizers, cross-linking agents, and chemical treatment of filler material are addressed and information on thermoplastic and thermosetting polymer-based composites is also covered, including their various applications and the advantages and disadvantages of their use in different settings. The final 2 chapters of the book cover mathematical modeling of creep-recovery behavior for polymer composites and software-based simulation of creep-recovery in polymer composites, respectively. Dynamic Mechanical and Creep-Recovery Behaviour of Polymer-Based Composites: Mechanical and Mathematical Modeling covers mathematical modelling, dynamic mechanical analysis, and the ways in which various factors impact the creep-recovery behaviour of polymer composites. The effects of polymer molecular weight, plasticizers, cross-linking agents, and chemical treatment of filler material are addressed and information on thermoplastic and thermosetting polymer-based composites is also covered, including their various applications and the advantages and disadvantages of their use in different settings. The final 2 chapters of the book cover mathematical modeling of creep-recovery behavior for polymer composites and software-based simulation of creep-recovery in polymer composites, respectively. Analyzes the dynamic mechanical and creep-recovery behaviors of thermoplastic and thermosetting polymer composites in a variety of applications Features diverse mechanical/mathematical models utilized to fit data collected from creep-recovery studies Covers various factors that influence dynamic mechanical properties Discusses the advantages and disadvantages of using these materials in different settings

Download or read book Molecular Dynamics Modeling and Characterization of Graphene polymer Nanocomposites written by Rezwanur Rahman and published by . This book was released on 2012 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt: The current work focuses on the characterization of graphene based nanocomposites using molecular dynamic simulation and multiscale modeling approaches. Both graphene-epoxy and graphene-cellulose nanocomposites were considered in this study. A hierarchical multiscale modeling approach has been proposed using peridynamics and molecular dynamics simulation. Firstly, the mechanical properties of crosslinked graphene/epoxy (G-Ep) nanocomposites were investigated by molecular mechanics (MM) and molecular dynamics (MD) simulations. The influence of graphene's weight concentration, aspect ratio and dispersion on stress-strain response and elastic properties were studied. The MD models were further analyzed through the radial distribution function (RDF), molecular energy and atom density. Both the amorphous and the layered structures of G-Ep nanocomposites were considered in order to study the effect of graphene dispersion on elastic properties. A polymer consistent force field (pcff) was used throughout the analysis. Each of the G-Ep system underwent an NVT (constant number of atoms, volume and temperature) and an NPT (constant number of atoms, pressure and temperature) based equilibration followed by finite deformation. The stress-strain responses were evaluated from MD simulations for both amorphous and layered-graphene unit cells in order to determine elastic constants. Moreover, MM was also used to calculate Young's modulus and shear modulus. The results show significant improvement in Young's modulus and shear modulus for the G-Ep system in comparison to the neat epoxy resin. It appears that the RDF, molecular energy and aspect ratios are influenced by both graphene concentrations and aspect ratios. The graphene concentrations in the range of 1-3% are seen to improve Young's modulus and shorter graphenes are observed to be more effective than larger ones. In addition, the dispersed graphene system is more promising in enhancing in-plane elastic modulus than the agglomerated graphene system. The cohesive and pullout forces versus displacements data were plotted under normal and shear modes in order to characterize interfacial properties. The cohesive force is significantly improved by attaching the graphene with a chemical bond at the graphene-epoxy interface. The elastic constants determined by molecular modeling showed a good agreement with the nanoindentation test results. In the second part of the work, cellulose was considered to study the mechanical properties of graphene-cellulose bionanocomposite. Multiple number of cellobiose repeat units were connected together to obtain long cellulose chains. Similar to the previous study, the effect of graphene's weight concentration, aspect ratio and dispersion was studied by considering the amorphous and the layered graphene-cellulose systems. Each unitcell was equilibrated using the NVT and NPT molecular dynamics. Uniaxial deformation was applied in order to obtain stress-strain response. The Young's modulii were calculated from the linear portion of the stress-strain responses. Similar to graphene-epoxy systems, the effect of graphene dispersion and agglomeration were studied in the stress-strain plots of graphene-cellulose system. A pcff forcefield was used to define intermolecular and intramolecular interactions. The effect of graphene's aspect ratio and weight concentration on the structural property of each unitcell was analyzed in terms of the radial distribution function (RDF), molecular energy, pairwise bond stretch and angle bending. The interfacial properties between graphene and cellulose were studied by analyzing both cohesive and pullout separation of graphene from cellulose matrix. Finally, the Young's modulii calculated from the MD simulation was compared with the tensile test data. The MD results showed a reasonable agreement with the tensile test results. It was addressed that incorporating graphane in cellulose matrix enhances the mechanical property of the cellulose based bio-polymer systems. In the third part of the work, a hierarchical multiscale modeling framework was established between peridynamics and molecular dynamics simulation using an intermediate coarse grained atomic model. The peridynamics formulation is based on continuum theory implying nonlocal force based interaction. It means, continuum points are separated by a finite distance and exert force upon each other. Peridynamics applies integral equations rather than partial differential equations as used in the classical continuum mechanics. Hence, the peridynamics (PD) and the molecular dynamics (MD) have similarities since both use a nonlocal force based interaction. In this work PD based continuum model of graphene-epoxy (G-Ep) nanocomposite is defined by the Lagrangian PD particles. Atomistic model is coupled with PD model through a hierarchical multiscale framework. The PD particles at a coarse scale interact with the fine scale PD particles by transferring pressure, displacements and velocities among each other. Based on the same hierarchical coupling method, a fine scale PD model is seamlessly interfaced with the atomistic model through an intermediate mesoscale region i.e. coarse-grain model. At the end of this hierarchical downscaling, the information such as the deformation, energy and other important parameters were captured in the atomistic region under the applied force at micro and macro regions. The change in atomistic domain is used to update the coarser PD models by introducing a hierarchical upscaling formulation. A simple two dimensional plate of neat epoxy was considered for a complete demonstration of such multiscale simulation platform. Displacements at different scales were analyzed in order to show the validity of the proposed multiscale model. Afterward, the model was applied to a graphene-epoxy plate with an edge crack. The region near the crack tip is interfaced with atomistic model by applying proposed hierarchical coupling method. The crack opening displacements were discussed at different scales. Finally, the multiscale framework was demonstrated with a 3D nanoindentation problem. The displacements at different scales during nanoindentation were compared. A benchmark analysis was also carried out to determine crack opening displacement (COD) in an edge cracked graphene sample using FEA, PD and MD simulation. The results showed good agreement between PD and MD simulation but FEA results addressed to have comparatively higher COD values. The results from peridynamic based framework for hierarchical multiscale modeling showed reasonable agreement between PD and atomistic models.

Download or read book Interfacial Bonding Characteristics in Natural Fiber Reinforced Polymer Composites written by Senthilkumar Krishnasamy and published by Springer Nature. This book was released on 2024-01-17 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a general overview of the importance of fibre-matrix interfacial bonding characteristics in natural fibre-based composites to obtain optimal material properties for a specific application. Composites materials are prepared by combining fibres and polymers to achieve superior materials properties than those of the individual components. Composite materials are used to produce lightweight components with increased stiffness and strength; their properties can also be tailored for any specific applications. The glass fibre reinforced composites dominate 95% of the thermoplastic and thermoset-based composites. However, the natural fibre reinforced composites can give competition to the glass fibres due to their advantages such as biodegradability, low density, low cost, and good mechanical properties. This book looks into biocomposites and its important aspect of optimization of materials’ performance by fine-tuning the fibre-matrix bonding characteristics. The chapters in the book look at different plant fibres such as kenaf, pineapple leaf, jute, date palm, luffa, cotton, hemp, wood, bamboo, flax, and straw and the different approaches to enhance the fibre-matrix interfacial bonding through physical and/or chemical treatment methods. It demonstrates that the nature of fibre-matrix bonding has a significant effect on the properties such as tensile, flexural, impact, inter-laminar shear strength, moisture absorption, thickness swelling, thermal, chemical, damping, creep, and fatigue. Its content appeals to academics, students, researcher, and scientist who are working in the field to produce biodegradable and recyclable materials in the composite industry.

Download or read book Forcefields for Atomistic Scale Simulations Materials and Applications written by Akarsh Verma and published by Springer Nature. This book was released on 2022-08-19 with total page 395 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the forcefields/interatomic potentials that are used in the atomistic-scale and molecular dynamics simulations. It covers mechanisms, salient features, formulations, important aspects and case studies of various forcefields utilized for characterizing various materials (such as nuclear materials and nanomaterials) and applications. This book gives many help to students and researchers who are studying the forcefield potentials and introduces various applications of atomistic-scale simulations to professors who are researching molecular dynamics.

Download or read book Poly Vinyl Chloride Based Composites and Nanocomposites written by Akhina H and published by Springer Nature. This book was released on 2023-12-06 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers Poly(vinyl chloride) Fundamentals, Fabrication and characterization of PVC based composites and nanocomposites specifically natural fibre reinforced PVC composites, carbonaceous filler reinforced PVC composites , metal oxide fled PVC composites and nanocomposites etc. This book also covers the conducting PVC composites and recent advances in nanocomposites based on PVC .The rheological, mechanical, barrier, thermal, dielectric behaviour of PVC composites and nanocomposites are discussed in details.

Download or read book Graphene written by Hongwei Zhu and published by Academic Press. This book was released on 2017-09-01 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: Graphene: Fabrication, Characterizations, Properties and Applications presents a comprehensive review of the current status of graphene, especially focused on synthesis, fundamental properties and future applications, aiming to giving a comprehensive reference for scientists, researchers and graduate students from various sectors. Graphene, a single atomic layer of carbon hexagons, has stimulated a lot of research interest owing to its unique structure and fascinating properties. The book is devoted to understanding graphene fundamentally yet comprehensively through a wide range of issues in the areas of materials science, chemistry, physics, electronics and biology. The book is an important resource of comprehensive knowledge pertinent to graphene and to related expanding areas. This valuable book will attract scientists, researchers and graduate students in physics and chemistry because it aims at providing all common knowledge of these communities including essential aspects of material synthesis and characterization, fundamental physical properties and detailed chapters focused on the most promising applications. Presents a comprehensive and up-to-date review of current research of graphene, especially focused on synthesis, fundamental properties and future applications Includes not only fundamental knowledge of graphene materials, but also an overview of special properties for different potential applications of graphene in the fields of solar cells, photodetectors, energy storage, composites, environmental materials and bio-materials Emphasizes graphene-based applications that are quickly emerging as potential building blocks for nanotechnological commercial applications

Download or read book Innovative Design Analysis and Development Practices in Aerospace and Automotive Engineering I DAD 2018 written by U. Chandrasekhar and published by Springer. This book was released on 2018-12-20 with total page 553 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gathers the best articles presented by researchers and industrial experts at the International Conference on “Innovative Design and Development Practices in Aerospace and Automotive Engineering (I-DAD 2018)”. The papers discuss new design concepts, analysis and manufacturing technologies, with an emphasis on achieving improved performance by downsizing; improving the weight-to-strength ratio, fuel efficiency, and operational capability at room and elevated temperatures; reducing wear and tear; and addressing NVH aspects, while balancing the challenges of Euro IV/Barat Stage IV emission norms and beyond, greenhouse effects, and recyclable materials. The innovative methods discussed here offer valuable reference material for educational and research organizations, as well as industry, encouraging them to pursue challenging projects of mutual interest.

Download or read book Coir Fiber and its Composites written by Mohammad Jawaid and published by Elsevier. This book was released on 2022-09-26 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coir Fiber and its Composites: Processing, Properties and Applications presents unified knowledge on eco-friendly coir fiber composites, covering their characterization, design, manufacture and applications. The properties of coir fiber and its extraction and processing are explored in-depth, thus helping researchers, scientists and those working in various industries understand the need of coir fiber composites in the development of green, biodegradable and sustainable components that have potential in real-world applications. The book elaborates on the basic characterization of coir fibers and its composite properties such, including its physical, mechanical, morphological, thermal, structural and chemical properties. Users will find sound knowledge on coir fiber and its composites, including modern design and manufacture engineering with numerous example illustrations, methods and results that will be valuable for graduate students, researchers and industrialists working in the development of plant-based composite materials. Covers all aspects of coir fibers and their composites, such as cultivation, extraction, processing, modification, composite design, properties and applications Provides an overview of all types of natural fibers and their composites to give an insight on which fiber is suitable for a specific application Presents a comparison in terms of properties, costs, production processes and availability of different fibers Covers lifecycle assessment, case studies on industrial product development, manufacturing and design as well as numerical problems and solutions

Download or read book Cellulose Fibre Reinforced Composites written by R. Arun Ramnath and published by Woodhead Publishing. This book was released on 2022-10-29 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cellulose Fibre Reinforced Composites: Interface Engineering, Processing and Performance provides an up-to-date review of current research in cellulose fiber reinforced polymer composites. Key emphasis is placed on interface engineering, modern technologies needed for processing and materials performance in industrial applications. Novel techniques for interfacial adhesion, characterization and assessment of cellulose fiber reinforced composites are also discussed, along with current trends and future directions. With contributions from leading researchers in industry, academic, government and private research institutions from across the globe, the book will be an essential reference resource for all those working in the field of cellulose fibers and their composites. Reviews advances in recent research towards enhancing the mechanical properties of cellulose fiber composites Discusses interface engineering and modern technologies needed for processing cellulose fiber composites Includes case studies of problems with interfaces and practical industrial applications

Download or read book Polymer Nanocomposites Containing Graphene written by Mostafizur Rahaman and published by Woodhead Publishing. This book was released on 2021-08-22 with total page 817 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polymer Nanocomposites Containing Graphene: Preparation, Properties and Applications provides detailed up-to-date information on the characterization, synthesis, processing, properties and application of these materials. Key topics that are covered in the book include: the methods of synthesis and preparation of graphene as well as different processes and methods of functionalization and modification of graphene for improving composite properties. The preparation techniques focus on which method is advantageous for getting improvements in properties along with their drawbacks. The structure and property relationships are also discussed in detail. The issues related to graphene dispersion in polymer matrices is also addressed as well as the use of graphene as reinforcement in thermoset resins. The different properties of the composites like mechanical, electrical, dielectric, thermal, rheological, morphology, spectroscopy, electronic, optical, and toxicity are reviewed from the geometrical and functional point of view. Applications cover electrical and electronic fields, flame and fire retardancy, structural, sensing and catalysis, membrane, in fuel cell and solar energy, hydrogen production, aerospace engineering, packaging, and biomedical/bioengineering fields. Up-to-date patents on graphene-polymer nanocomposites are also covered. Those working in graphene-based materials will benefit from the detailed knowledge presented in this book on graphene synthesis, composite preparation methods, and the related problems associated with them. The book will enable researchers to select the appropriate composite as per their respective field of application. Presents novel approaches for the preparation of graphene, its modification and nanocomposites with enhanced properties for state-of-the-art applications Special attention is given to how graphene is synthesized through different routes, their functionality, dispersion related matters and structural aspects controlling the composite properties for various applications All synthesis methodology and functionalization procedure for graphene is discussed

Download or read book Polymeric Nanocomposites with Carbonaceous Nanofillers for Aerospace Applications written by Ayesha Kausar and published by Woodhead Publishing. This book was released on 2022-10-06 with total page 369 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polymeric Nanocomposites with Carbonaceous Nanofillers for Aerospace Applications offers a comprehensive paperback on the aerospace relevance of polymer/carbonaceous nanofiller-based nanocomposite. This manuscript summarizes all specific information on the design, fabrication and application areas of aerospace industry that employ polymer/carbonaceous nanofiller-based nanocomposites. In addition, it points to the potential of aeronautical nanocomposites towards lightning strike, radiation shielding, anti-corrosion, electronic/optical features, thermal management, antistatic application, self-healing aptitude, and green nanocomposites. The modeling of mechanical and essential properties of aerospace nanocomposites is also discussed, along with challenges and future forecasts of polymer/carbonaceous nanofiller nanocomposites. Focuses on essential aerospace composites, carbonaceous nanofillers, and ensuing polymer/carbonaceous nanofiller-based nanocomposites Explores indispensable properties of aeronautical nanocomposites, modeling of physical properties, and combined influence of carbonaceous nanofillers and carbon fibers on space material properties Includes up-to-date technical applications of polymer/carbonaceous nanofiller-based nanocomposites in design, mechanical robustness, heat resistance, non-flammability, anti-corrosion, radiation shielding, lightning strike prevention, electronic/optical features, antistatic application, self-healing, thermal management, and green nanocomposites for aeronautical relevance

Download or read book Carbon Nanotube Polymer Composites written by Dimitrios Tasis and published by Royal Society of Chemistry. This book was released on 2015-11-09 with total page 293 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chemically-modified carbon nanotubes (CNTs) exhibit a wide range of physical and chemical properties which makes them an attractive starting material for the preparation of super-strong and highly-conductive fibres and films. Much information is available across the primary literature, making it difficult to obtain an overall picture of the state-of-the-art. This volume brings together some of the leading researchers in the field from across the globe to present the potential these materials have, not only in developing and characterising novel materials but also the devices which can be fabricated from them. Topics featured in the book include Raman characterisation, industrial polymer materials, actuators and sensors and polymer reinforcement, with chapters prepared by highly-cited authors from across the globe. A valuable handbook for any academic or industrial laboratory, this book will appeal to newcomers to the field and established researchers alike.