June 17, 2021

Download Ebook Free Experimental Characterization, Predictive Mechanical And Thermal Modeling Of Nanostructures And Their Polymer Composite

Experimental Characterization, Predictive Mechanical and Thermal Modeling of Nanostructures and Their Polymer Composites

Experimental Characterization, Predictive Mechanical and Thermal Modeling of Nanostructures and Their Polymer Composites
Author : Francesco Marotti De Sciarra,Pietro Russo
Publisher : William Andrew
Release Date : 2018-03-23
Category : Science
Total pages :342
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Experimental Characterization, Predictive Mechanical and Thermal Modeling of Nanostructures and Their Polymer Composite focuses on the recent observations and predictions regarding the size-dependent mechanical properties, material properties and processing issues of carbon nanotubes (CNTs) and other nanostructured materials. The book takes various approaches, including dedicated characterization methods, theoretical approaches and computer simulations, providing a detailed examination of the fundamental mechanisms governing the deviations of the properties of CNTs and other nanostructured materials. The book explores their applications in materials science, mechanics, engineering, chemistry and physics due to their unique and appealing properties. The use of such materials is, however, still largely limited due to the difficulty in tuning their properties and morphological and structural features. Presents a thorough discussion on how to effectively model the properties of carbon nanotubes and their polymer nanocomposites Includes a size-dependent analysis of properties and multiscale modeling Outlines the fundamentals and procedures of computational modeling as it is applied to carbon nanotubes and other nanomaterials

Lightweight Polymer Composite Structures

Lightweight Polymer Composite Structures
Author : Sanjay Mavinkere Rangappa,Jyotishkumar Parameswaranpillai,Suchart Siengchin,Lothar Kroll
Publisher : CRC Press
Release Date : 2020-09-01
Category : Technology & Engineering
Total pages :394
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This book provides a comprehensive account of developments in the area of lightweight polymer composites. It encompasses design and manufacturing methods for the lightweight polymer structures, various techniques, and a broad spectrum of applications. The book highlights fundamental research in lightweight polymer structures and integrates various aspects from synthesis to applications of these materials. Features Serves as a one stop reference with contributions from leading researchers from industry, academy, government, and private research institutions across the globe Explores all important aspects of lightweight polymer composite structures Offers an update of concepts, advancements, challenges, and application of lightweight structures Current status, trends, future directions, and opportunities are discussed, making it friendly for both new and experienced researchers.

Composites Industry Abstracts

Composites Industry Abstracts
Author : Anonim
Publisher : Unknown
Release Date : 1996
Category : Composite materials
Total pages :129
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Modeling and Prediction of Polymer Nanocomposite Properties

Modeling and Prediction of Polymer Nanocomposite Properties
Author : Vikas Mittal
Publisher : John Wiley & Sons
Release Date : 2012-12-07
Category : Technology & Engineering
Total pages :320
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The book series 'Polymer Nano-, Micro- and Macrocomposites' provides complete and comprehensive information on all important aspects of polymer composite research and development, including, but not limited to synthesis, filler modification, modeling, characterization as well as application and commercialization issues. Each book focuses on a particular topic and gives a balanced in-depth overview of the respective subfi eld of polymer composite science and its relation to industrial applications. With the books the readers obtain dedicated resources with information relevant to their research, thereby helping to save time and money. This book lays the theoretical foundations and emphasizes the close connection between theory and experiment to optimize models and real-life procedures for the various stages of polymer composite development. As such, it covers quantum-mechanical approaches to understand the chemical processes on an atomistic level, molecular mechanics simulations to predict the filler surface dynamics, finite element methods to investigate the macro-mechanical behavior, and thermodynamic models to assess the temperature stability. The whole is rounded off by a look at multiscale models that can simulate properties at various length and time scales in one go - and with predictive accuracy.

International Aerospace Abstracts

International Aerospace Abstracts
Author : Anonim
Publisher : Unknown
Release Date : 1999
Category : Aeronautics
Total pages :129
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Dissertation Abstracts International

Dissertation Abstracts International
Author : Anonim
Publisher : Unknown
Release Date : 2008
Category : Dissertations, Academic
Total pages :129
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Properties and Characterization of Modern Materials

Properties and Characterization of Modern Materials
Author : Andreas Öchsner,Holm Altenbach
Publisher : Springer
Release Date : 2016-07-30
Category : Technology & Engineering
Total pages :452
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This book focuses on robust characterization and prediction methods for materials in technical applications as well as the materials’ safety features during operation. In particular, it presents methods for reliably predicting material properties, an aspect that is becoming increasingly important as engineering materials are pushed closer and closer to their limits to boost the performance of machines and structures. To increase their engineering value, components are now designed under the consideration of their multiphysical properties and functions, which requires much more intensive investigation and characterization of these materials. The materials covered in this monograph range from metal-based groups such as lightweight alloys, to advanced high-strength steels and modern titanium alloys. Furthermore, a wide range of polymers and composite materials (e.g. with micro- and nanoparticles or fibres) is covered. The book explores methods for property prediction from classical mechanical characterization-related fields of application, for example, from wear, creep, fatigue and crack growth, to specific surface properties, to dielectric and electrochemical values. As in all fields of modern engineering, the process is often accompanied by numerical simulation and optimization.

Engineered Materials Abstracts

Engineered Materials Abstracts
Author : Anonim
Publisher : Unknown
Release Date : 1995-07
Category : Ceramic materials
Total pages :129
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Chemical Engineering Progress

Chemical Engineering Progress
Author : Anonim
Publisher : Unknown
Release Date : 2007
Category : Chemical engineering
Total pages :129
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MULTI-SCALE CHARACTERIZATION AND MODELLING OF NANOSILICA REINFORCED CARBON/EPOXY COMPOSITES FOR FILAMENT WOUND STRUCTURES.

MULTI-SCALE CHARACTERIZATION AND MODELLING OF NANOSILICA REINFORCED CARBON/EPOXY COMPOSITES FOR FILAMENT WOUND STRUCTURES.
Author : Aniruddh Vashisth
Publisher : Unknown
Release Date : 2017
Category :
Total pages :129
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Fiber reinforced composite driveshaft are seen as an attractive replacement for metallic driveshaft in helicopters. Rigid matrix composite (RMC) are composites reinforced with a strong fiber such as carbon fibers in a rigid matrix such as an epoxy. Matrix plays an important role in the determining the properties of the fiber composites, for instance mechanical and thermal properties can be tailored by changing molecular structure of the polymer matrix or incorporating nanoparticles in the matrix. The objective of this research is to evaluate, experimentally and analytically, at multiple length scales, the effects of adding spherical nanosilica (NS) particles on the thermomechanical properties of carbon/epoxy composites. Starting from a molecular scale, a novel thermodynamically fundamental mechanism is developed that simulates the cross-linking of epoxide and an aromatic amine (DETDA) curing agent. Good agreement between the simulations and the experimental results were seen for tensile modulus, glass transition temperature, and mass density. The complete simulation procedure, including cross-linking, equilibration and testing of the polymer, was carried out using reactive force fields.Epoxies cured with three different curing agents (3,3-diaminodiphenylsulfone (DDS), 4-4-DDS, and DETDA) were included in all the experiments. Epoxies with variable concentrations of NS were mechanically characterized for modulus, fracture toughness, density, and glass transition temperature. The addition of NS improved the modulus and fracture toughness, although it also decreased the glass transition temperature slightly, possibly due to the diluent component of the master batch of NS-filled bis F. This investigation provides, for the first time, a full set of 2-D lamina properties of T700 carbon fiber composites with 0 wt % NS (0NS) and 37 wt % NS (37NS) cured with DETDA. Equations for predicting the 2D properties as functions of NS and carbon fiber contents were developed using micromechanics principals and backed-out properties of T700 fibers. At the lamina level, NS increased the longitudinal and transverse compression strengths and descreased the transverse coefficient of thermal expansion, which are beneficial for overall composite performance. Using these predictive equations, a simple design exercise was conducted for []5 carbon/epoxy driveshafts with and without NS, considering strength, buckling, torsional stiffness, and whirl. The use of NS improved the safety factors for strength, buckling, and torsional stiffness for all ply angles. However, using NS increased the weight of the shaft and consequently reduced the safety factor for whirl at ply angles less than approximately 60 degrees, which is the realm where NS does not significantly increase the bending stiffness of the shaft due to the dominating effect of the fibers.Tubular specimens with 0, 15, 25 and 34 wt % NS cured with 4,4DDS and 0 and 37 wt % NS cured with DETDA were ballistically impacted at normal incidence and evaluated for damage area and residual torsional strength. This is the first study on NS-filled composites with ballistic impact where the projectile punctures through the composite. Incoporating NS into the composite decreased the projected damage area, increased the residual torsional strength, and increased the energy absorption per unit projected damage area. Specimens manufactured with 15NS/DDS and 25NS/DDS exhibited the highest residual strengths. An analytical model was developed to calculate the damage area and residual projectile velocity after normal-incidence impact. This model is an extension of a previous energy-based model for cross-ply laminates, with original modifications developed for angle plies and dual walls. Good agreement between the experimental and analytical residual velocities was obtained. Analytical and experimental damage areas display a similar trend with NS content, but the analytical damage areas were always less than the experimental areas. Tubular specimens with 0 and 15 wt % NS with DETDA curing agent were obliquely impacted with a ballistic projectile and subjected to residual torsional strength testing. No significant change in damage area or residual torsional strength was seen in these experiments, indicating a negligible effect of NS in an impact scenario where the oblique path of the projectile, rather than the toughness of the composite, is the main factor affecting the size of the damage zone.

Metals Abstracts

Metals Abstracts
Author : Anonim
Publisher : Unknown
Release Date : 1999-04
Category : Metallurgy
Total pages :129
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Characterization of Nanocomposites

Characterization of Nanocomposites
Author : Frank Abdi,Mohit Garg
Publisher : CRC Press
Release Date : 2017-03-31
Category : Science
Total pages :486
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These days, advanced multiscale hybrid materials are being produced in the industry, studied by universities, and used in several applications. Unlike for macromaterials, it is difficult to obtain the physical, mechanical, electrical, and thermal properties of nanomaterials because of the scale. Designers, however, must have knowledge of these properties to perform any finite element analysis or durability and damage tolerance analysis. This is the book that brings this knowledge within easy reach. What makes the book unique is the fact that its approach that combines multiscale multiphysics and statistical analysis with multiscale progressive failure analysis. The combination gives a very powerful tool for minimizing tests, improving accuracy, and understanding the effect of the statistical nature of materials, in addition to the mechanics of advanced multiscale materials, all the way to failure. The book focuses on obtaining valid mechanical properties of nanocomposite materials by accurate prediction and observed physical tests, as well as by evaluation of test anomalies of advanced multiscale nanocomposites containing nanoparticles of different shapes, such as chopped fiber, spherical, and platelet, in polymeric, ceramic, and metallic materials. The prediction capability covers delamination, fracture toughness, impact resistance, conductivity, and fire resistance of nanocomposites. The methodology employs a high-fidelity procedure backed with comparison of predictions with test data for various types of static, fatigue, dynamic, and crack growth problems. Using the proposed approach, a good correlation between the simulation and experimental data is established.

Guide to Programs : Fiscal Year ...

Guide to Programs : Fiscal Year ...
Author : National Science Foundation (U.S.)
Publisher : Unknown
Release Date : 1997
Category : Engineering
Total pages :129
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Directory of Graduate Research

Directory of Graduate Research
Author : American Chemical Society. Committee on Professional Training
Publisher : Unknown
Release Date : 2005
Category : Biochemistry
Total pages :129
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Faculties, publications and doctoral theses in departments or divisions of chemistry, chemical engineering, biochemistry and pharmaceutical and/or medicinal chemistry at universities in the United States and Canada.

American Doctoral Dissertations

American Doctoral Dissertations
Author : Anonim
Publisher : Unknown
Release Date : 2002
Category : Dissertation abstracts
Total pages :129
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