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Author: Anna Boczkowska
Publisher: BoD – Books on Demand
ISBN: 9535107399
Category : Science
Languages : en
Pages : 416
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Book Description
This book provides an extensive overview of current trends in the area of elastomers and their composites from the chapters contributed by internationally recognized specialists. The book deals with novel synthesis, modelling and experimental methods in elastomers. Contents include: new approach to crosslinking, liquid crystal elastomers, nanocomposites, smart elastomers, elastomers in microelectronics and microfluidics, elastomers in cement concrete and mortar, experimental testing and modelling. Each section demonstrates how enhancements in materials, processes and characterization techniques can improve performance in the field of engineering. The book provides a unique opportunity to discover the latest research on elastomer advances from laboratories around the world. This book addresses to industrial and academic researchers in the fields of physical, chemical, biological sciences and engineering.
Author: Anna Boczkowska
Publisher: BoD – Books on Demand
ISBN: 9535107399
Category : Science
Languages : en
Pages : 416
Get Book Here
Book Description
This book provides an extensive overview of current trends in the area of elastomers and their composites from the chapters contributed by internationally recognized specialists. The book deals with novel synthesis, modelling and experimental methods in elastomers. Contents include: new approach to crosslinking, liquid crystal elastomers, nanocomposites, smart elastomers, elastomers in microelectronics and microfluidics, elastomers in cement concrete and mortar, experimental testing and modelling. Each section demonstrates how enhancements in materials, processes and characterization techniques can improve performance in the field of engineering. The book provides a unique opportunity to discover the latest research on elastomer advances from laboratories around the world. This book addresses to industrial and academic researchers in the fields of physical, chemical, biological sciences and engineering.
Author: Anna Boczkowska
Publisher:
ISBN: 9789535107392
Category :
Languages : en
Pages :
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Book Description
Author: Mostafa Asadi Khanouki
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
Multi-functional magnetorheological elastomers (MREs) with magnetic-controlled properties offer great potential for enabling new technologies in a diverse range of industry sectors, such as automotive, aerospace, civil, and biomedical applications. The main objective of this research dissertation is to develop analysis models for magneto-mechanical properties of smart MREs and to propose design optimization strategies to optimally design a novel sandwich beam-type MRE-based adaptive tuned vibration absorber. The dissertation comprises three major interrelated parts. In the first part, a quasi-static microstructure-based model has been proposed to investigate the magneto-elastic properties of MREs. The elastic response of the MREs at zero magnetic field is initially studied by comparing the results of three hyperelastic material models. Then, a microscale model is developed for predicting the quasi-static response of MREs under an external magnetic field. The model considers magnetic interaction between particles distributed in the carrier elastomeric matrix according to regular lattice models for isotropic MREs and according to chain-like structure for anisotropic MREs. Several lattice models are proposed, and performance of each lattice is compared with their counterparts. Detailed explanation is provided on the characteristics of the proposed lattices and on the resulting changes in the microstructure properties of the MREs. The simulation results for different lattice models are then compared with the experimental measurements for both isotropic and anisotropic MRE samples using an advanced rheometer equipped with a magnetorheological (MR) device. In the second part, the dynamic magneto-mechanical properties of MREs are investigated. For this purpose, a dynamic physic-based model considering the microstructure of MREs is developed to accurately predict the frequency- and field-dependent linear viscoelastic properties of the material. The proposed model considers a cubic particle network in which magnetic particles are located at the junctures and connected with elastic springs. Using Langevin dynamics, the governing equations of motion of particles are derived to evaluate the relaxation spectrum associated with particles' motion in parallel and normal directions with respect to the applied magnetic field. A dipole magnetic saturation model is also implemented to derive the storage and loss moduli of the MREs in terms of frequency and magnetic flux density. The material parameters in the proposed dynamic microstructure-based model have been identified using experimental tests. For this purpose, oscillatory shear tests were performed using the magneto-rheometer in linear viscoelastic region under a wide range of excitation frequency varying from 2 Hz to 100 Hz in presence of various levels of applied magnetic fields ranging from 0.0 T to 1.0 T. The viscoelastic properties, namely storage and loss moduli of both isotropic and anisotropic MREs, were subsequently measured and compared with those obtained using the developed model to quantitatively evaluate its performance. The third part of the present dissertation aims to investigate the application of MREs in developing a novel sandwich beam-shaped MRE-based adaptive tuned vibration absorber (MRE-ATVA). An MRE-ATVA comprised of a light-weight sandwich beam treated with an MRE core layer and two electromagnets installed at both free ends is proposed. The MRE-ATVA is designed to have a lightweight and compact structure and the electromagnets provide the magnetic field required to activate the MRE layer while also act as the resonator of the absorber. The finite element (FE) model of the proposed MRE-ATVA and magnetic model of the electromagnets with three different potential designs are developed and combined to evaluate the frequency range of the absorber under varying magnetic field intensity. The results of the developed models are validated in multiple stages with available analytical and simulation data. The developed models are then utilized to formulate the multidisciplinary design optimization problem to maximize the operating frequency range of the MRE-ATVA while respecting constraints of weight, size, mechanical stress, and sandwich beam deflection. The optimization problem is solved combining the gradient based sequential quadratic programming (SQP) technique and stochastic based genetic algorithm (GA) to accurately obtain the global optimum solution. The performance of the optimal MRE-ATVAs with three potential designs are finally compared.
Author: Seung-Bok Choi
Publisher: Materials, Circuits and Device
ISBN: 1785617702
Category : Technology & Engineering
Languages : en
Pages : 443
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Book Description
This book introduces magnetorheological fluids and elastomers, and explores their material properties, related modelling techniques and applications in turn. The book offers insights into the relationships between the properties and characterisation of MR materials and their current and future applications.
Author: Norman Wereley
Publisher: Royal Society of Chemistry
ISBN: 1849736677
Category : Science
Languages : en
Pages : 410
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Book Description
Leading experts provide a timely overview of the key developments in the physics, chemistry and uses of magnetorheological fluids.
Author: P. M. Visakh
Publisher: Springer Science & Business Media
ISBN: 3642209254
Category : Technology & Engineering
Languages : en
Pages : 497
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Book Description
This is the first volume of a two-volume work which summarizes in an edited format and in a fairly comprehensive manner many of the recent technical research accomplishments in the area of Elastomers. “Advances in Elastomers” discusses the various attempts reported on solving these problems from the point of view of the chemistry and the structure of elastomers, highlighting the drawbacks and advantages of each method. It summarize the importance of elastomers and their multiphase systems in human life and industry, and covers all the topics related to recent advances in elastomers, their blends, IPNs, composites and nanocomposites. This first volume focuses on advances on the blends and interpenetrating networks (IPNs) of elastomers.
Author: Ubaidillah Sabino
Publisher: Springer Nature
ISBN: 9811544816
Category : Technology & Engineering
Languages : en
Pages : 813
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Book Description
This book gathers the proceedings of the 6th International Conference and Exhibition on Sustainable Energy and Advanced Materials (ICE-SEAM 2019), held on 16–17 October 2019 in Surakarta, Indonesia. It focuses on two relatively broad areas – advanced materials and sustainable energy – and a diverse range of subtopics: Advanced Materials and Related Technologies: Liquid Crystals, Semiconductors, Superconductors, Optics, Lasers, Sensors, Mesoporous Materials, Nanomaterials, Smart Ferrous Materials, Amorphous Materials, Crystalline Materials, Biomaterials, Metamaterials, Composites, Polymers, Design, Analysis, Development, Manufacturing, Processing and Testing for Advanced Materials. Sustainable Energy and Related Technologies: Energy Management, Storage, Conservation, Industrial Energy Efficiency, Energy-Efficient Buildings, Energy-Efficient Traffic Systems, Energy Distribution, Energy Modeling, Hybrid and Integrated Energy Systems, Fossil Energy, Nuclear Energy, Bioenergy, Biogas, Biomass Geothermal Power, Non-Fossil Energies, Wind Energy, Hydropower, Solar Photovoltaic, Fuel Cells, Electrification, and Electrical Power Systems and Controls.
Author: Yangguang Xu
Publisher:
ISBN:
Category : Electronic books
Languages : en
Pages : 0
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Book Description
Magnetorheological elastomers (MREs) are a type of soft magneto-active rubber-like material, whose physical or mechanical properties can be altered upon the application of a magnetic field. In general, MREs can be prepared by mixing micron-sized magnetic particles into nonmagnetic rubber-like matrices. In this chapter, the materials, the preparing methods, the analytical models, and the applications of MREs are reviewed. First, different kinds of magnetic particles and rubber-like matrices used to prepare MREs, as well as the preparing methods, will be introduced. Second, some examples of the microstructures, as well as the microstructure-based analytical models, of MREs will be shown. Moreover, the magnetic field-induced changes of the macroscopic physical or mechanical properties of MREs will be experimentally given. Third, the applications of MREs in engineering fields will be introduced and the promising applications of MREs will be forecasted. This chapter aims to bring the reader a first-meeting introduction for quickly knowing about MREs, instead of a very deep understanding of MREs.
Author: Wolfgang Grellmann
Publisher: Springer
ISBN: 3319418793
Category : Technology & Engineering
Languages : en
Pages : 537
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Book Description
This book covers the most recent advances in the deformation and fracture behaviour of polymer material. It provides deeper insight into related morphology–property correlations of thermoplastics, elastomers and polymer resins. Each chapter of this book gives a comprehensive review of state-of-the-art methods of materials testing and diagnostics, tailored for plastic pipes, films and adhesive systems as well as elastomeric components and others. The investigation of deformation and fracture behaviour using the experimental methods of fracture mechanics has been the subject of intense research during the last decade. In a systematic manner, modern aspects of fracture mechanics in the industrial application of polymers for bridging basic research and industrial development are illustrated by multifarious examples of innovative materials usage. This book will be of value to scientists, engineers and in polymer materials science.
Author: Stefan Odenbach
Publisher: Walter de Gruyter GmbH & Co KG
ISBN: 3110568837
Category : Science
Languages : en
Pages : 1172
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Book Description
Externally tunable properties allow for new applications of magnetic hybrid materials containing magnetic micro- and nanoparticles in sensors and actuators in technical and medical applications. By means of easy to generate and control magnetic fields, changes of the internal particle arrangements and the macroscopic properties can be achieved. This monograph delivers the latest insights into multi-scale modelling, experimental characterization, manufacturing and application of those magnetic hybrid materials.
