Download or read book Characterization of Carbon Nanotube Based Composites under Consideration of Defects written by Moones Rahmandoust and published by Springer. This book was released on 2015-10-14 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume presents the characterization methods involved with carbon nanotubes and carbon nanotube-based composites, with a more detailed look at computational mechanics approaches, namely the finite element method. Special emphasis is placed on studies that consider the extent to which imperfections in the structure of the nanomaterials affect their mechanical properties. These defects may include random distribution of fibers in the composite structure, as well as atom vacancies, perturbation and doping in the structure of individual carbon nanotubes.
Download or read book Carbon Nanotube Based Composites written by Antonio Pantano and published by Smithers Rapra. This book was released on 2012-09-28 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon nanotubes (CNTs) have amazing properties and a key way to take advantage of this is by incorporating nanotubes into a matrix to build composite materials. The best candidates for this task are undoubtedly polymers. Almost every characteristic of a polymer can be significantly enhanced by adding carbon nanotubes and as a result, new potential applications of carbon nanotube enhanced polymer composites are discovered every day. However, before carbon nanotube enhanced polymer composites become commonplace there are some tough challenges that need to be overcome. This book reviews the status of worldwide research in both single-walled and multi-walled carbon nanotube based composites. It serves as a practical guide on carbon nanotube based composites and a reference to students and researchers from the academia and industry.
Download or read book Synthesis and Characterization of Carbon Nanotubes and Nanotube based Composites written by Muralidharan Paramsothy and published by . This book was released on 2002 with total page 93 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Defects and Diffusion in Carbon Nanotubes written by and published by . This book was released on 2014 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon nanotubes are one of the newest materials to be discovered, being barely 20 years old. They are also the most promising one, with one particular sample of multi-walled nanotube attaining a tensile strength of 63GPa, and with carbon nanotubes in general having a specific strength of up to 48000kNm/kg: effectively a direct exploitation of the covalent sp2 bonding between carbon atoms. Plastic deformation begins at about 5% strain. The nanotubes can be produced in lengths of up to 550mm, and thicknesses as small as 4.3Å; making them perfect reinforcement fibres for composites. They also have many other properties which may be useful in electronics, gas storage, etc. The present compilation focuses on the various characteristic types of defect which are found in carbon nanotubes, plus the relatively limited number of diffusion studies which have been performed. The 418 entries cover the period from 1994 to 2014. Keyword: carbon nanotube Abstracts of 418 articles published in a wide range of technical journals coverfirst defects in carbon nanotubes then the diffusion of various compounds through carbon nanotubes. Those on defects consider such aspects as adsorption, characterization, disclination, the effect on compressive behavior, the effect on thermal conductivity, heptagon, interstitial, pinhole, topological, andvacancy. Among the chemicals addressed in the diffusion studies are alkanes, gold, carbon dioxide, copper, iron, water, Lennard-Jones fluid, nitrogen, silicon, and simple gases. -- Carbon-- Engineering-- Materials science.
Download or read book Carbon Composites written by Eduardo A. Castro and published by CRC Press. This book was released on 2023-06-02 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume demonstrates the unique place in nanotechnology and nanoscience that carbon nanomaterials occupy owing to their exceptional chemical, mechanical, thermal, and electrical properties. Carbon nanomaterials have diverse applications in super strong composite materials, smart sensors, energy storage and conversion, super-capacitors, and more. Focusing on materials rather than mechanics, this volume discusses the key roles of materials science and engineering in the development of composite materials. The result of research by many highly qualified experts in the field of experimental and theoretical research on graphene and its derivatives, the volume describes experimental methods for obtaining and characterizing samples of chemically modified graphene. It reviews the potential application areas and modifications of graphene-based composite materials and interprets the interesting physical effects discovered for the first time for graphene materials under consideration. This book covers the innovative methodologies and strategies adopted in carbon materials research area including: Synthesis, characterization, and functionalization of carbon nanotubes and graphene Surface modification of graphene Carbon-based nanostructured materials The use of carbon nanomaterials for energy applications Development of carbon nanotubes reinforced metal matrix composites and non-metallic composites and their myriad potential end-use applications Key challenges to the successful and widespread implementation of carbon nanotubes reinforced metal matrix composites and non-metallic composites Methods for quantification and improved control of carbon nanotubes distributions Recent research and design trends for carbon nanomaterials-based sensors for a variety of applications Advances and potential applications in environmental monitoring and healthcare The book will be useful for postgraduate students and researchers as well as for experts in industrial sectors. It will also appeal to those involved in materials science and nanotechnology.
Download or read book Carbon Nanotubes written by Siva Yellampalli and published by BoD – Books on Demand. This book was released on 2011-07-20 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon nanotubes are one of the most intriguing new materials with extraordinary properties being discovered in the last decade. The unique structure of carbon nanotubes provides nanotubes with extraordinary mechanical and electrical properties. The outstanding properties that these materials possess have opened new interesting researches areas in nanoscience and nanotechnology. Although nanotubes are very promising in a wide variety of fields, application of individual nanotubes for large scale production has been limited. The main roadblocks, which hinder its use, are limited understanding of its synthesis and electrical properties which lead to difficulty in structure control, existence of impurities, and poor processability. This book makes an attempt to provide indepth study and analysis of various synthesis methods, processing techniques and characterization of carbon nanotubes that will lead to the increased applications of carbon nanotubes.
Download or read book Characterization of the Mechanical Properties of Carbon Nanotube based Composites Using the Finite Element Method written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon nanotubes (CNT) are being used extensively as reinforcing materials at nanoscale in developing new nanocomposites, because of their excellent mechanical properties. Incorporating CNTs in polymer matrices can potentially enhance the stiffness and strength of composites significantly when compared to those reinforced with conventional carbon fibers. However, retaining these outstanding properties at macro-scale poses a considerable challenge. To discover the ways for achieving this entails extensive experimental and simulation studies. Molecular dynamics (MD) simulations have been proved to be an excellent approach in characterizing nanocomposites. Nevertheless, MD is limited to nanoscale due to its extra-ordinary computational costs, which promoted the development and usage of alternate approaches for characterizing CNT reinforced composites at microscale. In this research one of these alternative approaches, the continuum mechanics approach using the finite element method, is employed to estimate the effective modulus of CNT reinforced composites and was successfully validated using other analytical (rule of mixtures) and MD methods. Large-scale models were developed, simulating CNTs using pipe elements for the first time. Results from these models reveal that there exists a limiting value for the length of long CNT, for effective load transfer. It was also observed that composites reinforced with long CNTs yield very high effective modulus compared to those with short CNTs. These results are found to be in good agreement with those obtained using MD and multi-scale constitutive modeling approaches.
Download or read book Defects and Diffusion in Carbon Nanotubes written by D.J. Fisher and published by Trans Tech Publications Ltd. This book was released on 2014-08-04 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon nanotubes are one of the newest materials to be discovered, being barely 20 years old. They are also the most promising one, with one particular sample of multi-walled nanotube attaining a tensile strength of 63GPa, and with carbon nanotubes in general having a specific strength of up to 48000kNm/kg: effectively a direct exploitation of the covalent sp2 bonding between carbon atoms. Plastic deformation begins at about 5% strain. The nanotubes can be produced in lengths of up to 550mm, and thicknesses as small as 4.3Å; making them perfect reinforcement fibres for composites. They also have many other properties which may be useful in electronics, gas storage , etc. The present compilation focuses on the various characteristic types of defect which are found in carbon nanotubes, plus the relatively limited number of diffusion studies which have been performed. The 418 entries cover the period from 1994 to 2014.
Download or read book Carbon Nanotubes written by Andy Nieto and published by CRC Press. This book was released on 2021-05-18 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: This discovery of carbon nanotubes (CNT) three decades ago ushered in the technological era of nanotechnology. Among the most widely studied areas of CNT research is their use as structural reinforcements in composites. This book describes the development of CNT reinforced metal matrix composites (CNT-MMCs) over the last two decades. The field of CNT-MMCs is abundant in fundamental science, rich in engineering challenges and innovations and ripe for technological maturation and commercialization. The authors have sought to present the current state of the-art in CNT-MMC technology from their synthesis to their myriad potential end-use applications. Specifically, topics explored include: • Advantages, limitations, and evolution of processing techniques used to synthesize and fabricate CNT-MMCs • Emphasizes dispersion techniques of CNTs in metallic systems, a key challenge to the successful and widespread implementation of CNT-MMCs. Methods for quantification and improved control of CNT distributions are presented • Methods for quantification and improved control of CNT distributions are presented • Characterization techniques uniquely suited for charactering these nanoscale materials and their many chemical and physical interactions with the metal matrix, including real-time in-situ characterization of deformation mechanisms • Electron microscope images from premier studies enrich discussions on micro-mechanical modeling, interfacial design, mechanical behavior, and functional properties • A chapter is dedicated to the emergence of dual reinforcement composites that seek to enhance the efficacy of CNTs and lead to material properties by design This book highlights seminal findings in CNT-MMC research and includes several tables listing processing methods, associated CNT states, and resulting properties in order to aid the next generation of researchers in advancing the science and engineering of CNT-MMCs. In addition, a survey of the patent literature is presented in order to shed light on what the first wave of CNT-MMC commercialization may look like and the challenges that will have to be overcome, both technologically and commercially.
Download or read book Carbon Nanotubes written by Arvind Agarwal and published by CRC Press. This book was released on 2010-10-19 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: From the Foreword, written by legendary nano pioneer M. Meyyappan, Chief Scientist for Exploration Technology NASA Ames Research Center, Moffett Field, California, USA: "...there is critical need for a book to summarize the status of the field but more importantly to lay out the principles behind the technology. This is what Professor Arvind Agarwal and his co-workers ... have done here." Carbon Nanotubes: Reinforced Metal Matrix Composites reflects the authors’ desire to share the benefits of nanotechnology with the masses by developing metal matrix carbon nanotube (MM-CNT) composites for large-scale applications. Multiwall carbon nanotubes can now be produced on a large scale and at a significantly reduced cost. The book explores potential applications and applies the author’s own research to highlight critical developmental issues for different MM-CNT composites—and then outline novel solutions. With this problem-solving approach, the book explores: Advantages, limitations, and the evolution of processing techniques used for MM-CNT composites Characterization techniques unique to the study of MM-CNT composites—and the limitations of these methods Existing research on different MM-CNT composites, presented in useful tables that include composition, processing method, quality of CNT dispersion, and properties The micro-mechanical strengthening that results from adding CNT The applicability of micro-mechanics models in MM-CNT composites Significance of chemical stability for carbon nanotubes in the metal matrix as a function of processing, and its impact on CNT/metal interface and mechanical properties Computational studies that have not been sufficiently covered although they are essential to research and development The critical issue of CNT dispersion in the metal matrix, as well as a unique way to quantify CNT distribution and subsequently improve control of the processing parameters for obtaining improved properties Carbon Nanotubes: Reinforced Metal Matrix Composites paints a vivid picture of scientific and application achievements in this field. Exploring the mechanisms through which CNTs are enhancing the properties of different metal-based composites, the authors provide a roadmap to help researchers develop MM-CNT composites and choose potential materials for use in emerging areas of technology.
Download or read book Carbon Nanotube polymer Composites written by Dimitrios Tasis and published by Royal Society of Chemistry. This book was released on 2013 with total page 293 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this book is to summarize the basic chemical aspects for obtaining multifunctional carbon nanotube-based polymer composites, but also to highlight some of the most remarkable advances that occurred in the field during the last recent years.
Download or read book Characterization of Carbon Nanotubes and Carbon Nanotube epoxy Composites written by Paul Matthew Saville and published by . This book was released on 2015 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: The mechanical and electrical properties of carbon nanotube composites are attractive for a number of applications. The final properties depend on the quality of the feed stock, the amount of material used, and methods for de-aggregating and dispersing the nanotubes. Here, Fourier transform infrared spectroscopy, RAMAN spectroscopy, scanning electron microscopy, thermogravimetric analysis, and permittivity measurements are used to discern between three commercially available multi-walled carbon nanotubes (Nanocyl 7000, Cheap Tubes, and a sample of acid functionalized multi-walled nanotubes), and their epoxy composites. The RAMAN and thermogravimetric analysis data indicated that the Nanocyl had the most defects and impurities, however, the permittivity measurements and scanning electron microscopy data indicated that the Nanocyl nanotubes were well distributed in the matrix. The most important factors for dispersion and high permittivity appear to be the ability to de-aggregate the nanotubes, which is enabled by the short length, and a small diameter. The small diameter results in an overall longer length of carbon nanotube in the composite compared to an equal mass of larger diameter nanotubes.
Download or read book Characterization of Carbon Nanotubes and Carbon Nanotube eposxy Composites written by Paul Matthew Saville and published by . This book was released on 2015 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Manufacturing and Characterization of Carbon Nanotube Yarn Composites written by Cecil E. Evers and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This research demonstrates the techniques to potentially use continuous carbon nanotube (CNT) yarns to make high mechanical performance composites at scale for use in aerospace applications. CNT yarns are a way to convert carbon nanotubes into engineering scale materials. Fully CNT reinforced composites were manufactured using a filament winding process and aerospace grade resin systems. Manufacturing techniques were evaluated, including stretching, compression, resin impregnation, and flow control. Continuous CNT yarns were made into sizable unidirectional, 0°/90°, and quasi-isotropic composite laminates. The resultant composite panels achieved mechanical properties that exceed the current state of the art carbon fiber composites such as IM7/8552 CFRP.
Download or read book Characterization of Carbon Nanotube Reinforced Polymer Composite Material Based on Multiscale Finite Element Model and Probabilistic Approach written by Jorge Alberto Palacios Moreno and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon-Nanotube-Reinforced-Polymer-Composite (CNRPC) materials have generated widespread interest over the last several years in practical engineering applications, such as aeronautical and aerospace engineering structures. However, studies still need to be carried out to characterize their mechanical properties, especially the dynamic properties, and the effects of defects on the mechanical properties. Experimental investigations intended for this purpose have limitations and, in most cases, reliable cost-effective experimental work could not be carried out. Computational modelling and simulation encompassing multiscale material behavior provide an alternate approach in this regard to characterize the material behavior. A probabilistic approach serves as a suitable approach to characterize the effects of material and structural defects. The present thesis reports the development of a computational framework of the Representative Volume Element (RVE) of a CNRPC material model to determine its static and dynamic responses, and also for the evaluation of its static and dynamic reliabilities based on a probabilistic characterization approach. A 3D multiscale finite element model of the RVE of the nanocomposite material consisting of a polymer matrix, a Single-Walled-Carbon-Nanotube (SWCN) and an interface region has been constructed for this purpose. The multiscale modeling is performed in terms of using different theories and corresponding strain energies to model the individual parts of the RVE of the CNRPC material. The macroscale continuum mechanics is used for the polymer matrix, the mesoscale mechanics is used for the interface region, and the nanoscale-level atomistic mechanics is used for the SWCN. The polymer matrix is modeled using the Mooney-Rivlin strain energy function to calculate its non-linear response, while the interface region is modeled via the van der Waals links. The SWCN is first modeled as a space frame structure by using the Morse potential, and then as a thin shell based on a suitable shell theory. For this purpose, the suitability and the accuracy of popular shell theories for use in the multiscale model of the RVE are assessed.
Download or read book Carbon Nanotube Based Nanocomposites written by Anna Boczkowska and published by Mdpi AG. This book was released on 2021-10-18 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Special issue, "Carbon nanotube-based nanocomposites", provides an extensive overview of current trends in the area of polymer matrix nanocomposites based on carbon nanotubes (CNTs) from the papers contributed by internationally recognized specialists. The Special Issue brings together 7 papers that deal with the various aspects of processing, as well as experimental and analytical approaches to carbon nanotube-based nanocomposites fabrication, characterization and application. Each paper demonstrates how enhancements in materials, processes and characterization techniques can improve performance in the field of engineering. The Special issue gives a unique opportunity to discover the latest research on carbon nanotube-based nanocomposites from different laboratories. Numerous references are given at the end of each paper to enable the reader to explore the topics covered in greater detail. Most of the papers describe the improvement of electrical and mechanical properties of polymer-based nanocomposites due to the application of CNTs, independently on the matrix used: (ethylene vinyl acetate) copolymer, hot melt copolyamides, epoxy and silicone resins. In each case, the relationships between the processing parameters and microstructure of obtained nanocomposites were described. The synergistic effect of hybrid nanofillers was also explored in nanocomposites with carbon and halloysite nanotubes. The effect of carbon nanotubes on the wear behavior of nanocomposites based on epoxy resin was investigated as well. The original results on the synthesis and characterization of composite shear thickening fluids containing carbon nanofillers are presented. The addition of the CNTs modified the impact absorption ability of such fluids. The presented Special Issue results also proved that CNTs can be used to obtain more resistant and durable cement-based composites.
Download or read book Carbon Nanotube Polymer Nanocomposites written by Srikanta Moharana and published by Springer. This book was released on 2024-10-23 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the latest advancements in various synthetic techniques, properties, characterization, and efficient applications of CNT-polymer nanocomposites. The preparation, properties, characterization, and applications of these technologically intriguing new materials are discussed in detail. The book covers a wide range of topics from the fundamentals of carbon nanotubes, their reinforced polymer nanocomposites and their applications in various fields including energy storage, 3D printing, electronics, aerospace and coatings, and environmental and bio-medical/bioengineering. It is a good resource for students, material scientists, and professionals interested in the synthesis, properties, characteristics, and cutting-edge applications of carbon nanotubes-polymer nanocomposites.
