Comprehensive introduction to finite elastoplasticity, addressing various analytical and numerical analyses & including state-of-the-art theories""

"Introduction to Finite Elastoplasticity" presents introductory explanations that can be readily understood by readers with only a basic knowledge of elastoplasticity, showing physical backgrounds of concepts in detail and derivation processes of almost all equations. The authors address various analytical and numerical finite strain analyses, including new theories developed in recent years, and explain fundamentals including the push-forward and pull-back operations and the Lie derivatives of tensors.

As a foundation to finite strain theory, the authors begin by addressing the advanced mathematical and physical properties of continuum mechanics. They progress to explain a finite elastoplastic constitutive model, discuss numerical issues on stress computation, implement the numerical algorithms for stress computation into large-deformation finite element analysis and illustrate several numerical examples of boundary-value problems. Programs for the stress computation of finite elastoplastic models explained in this book are included in an appendix, and the code can be downloaded from an accompanying website.

The continually growing plastics market consists of more than 250 million tons of product annually, making the recurring problem of polymer melt fracture an acute issue in the extrusion of these materials. Presenting a pictorial library of the different forms of melt fracture and real industrial extrusion melt fracture phenomena, Polymer Melt Fracture provides pragmatic identification and industrial extrusion defect remediation strategies based on detailed experimental and theoretical findings from the last 50 years. Distinct microscopic photos Each chapter in this comprehensive volume covers a different aspect of the science and technology relating to polymer melt fracture. The book begins with a collection of optical and scanning electron microscopy pictures. These photos show distorted capillary die extrudates for a number of commercially available polymers. The authors present a brief introduction to the basic science and technology of polymers. They explain what polymers are, how they are made, and how they can be characterized. They also discuss polymer rheology, review the principles of continuum mechanics, and define linear viscoelastic material functions. Techniques for observing and measuring fracture Next, the book explains how polymer melt fracture is actually experienced in the polymer processing industry. It explains the various ways polymer melt fracture may appear during polymer melt processing in different extrusion processes. The authors provide comprehensive reviews of the polymer melt fracture literature, with chapters on experimental findings and the techniques used to observe and measure polymer melt fracture, and the influence of polymer architecture and polymer processing conditions on the onset and types of polymer melt fracture. Posing a hypothesis about the phenomenon, the book presents the current understanding of polymer melt fracture. Mathematical equations Recognizing the importance of models for simulations that may indicate potential solutions, the book discusses aspects of non-linear constitutive equations and microscopic theory and develops a macroscopic model, explaining the capabilities and limitations of this approach. The book presents an overview of pragmatic tools and methods that have been used to prevent the appearance of polymer melt fracture and explains how to use them to suppress defects.

Rheology and Processing of Polymer Nanocomposites examines the current state of the art and new challenges in the characterization of nanofiller/polymer interactions, nanofiller dispersion, distribution, filler-filler interactions and interfaces in polymer nanocomposites. A one-stop reference resource for important research accomplishments in this area, it benefits academics, researchers, scientists, and engineers in the field of polymer nanocomposites in their daily work.

Safely Design, Test, and Construct Products Made of Natural Fiber Composites Natural fibers and their composites carry distinct advantages over industrial fibers. Some advantages-including renewability and availability of raw materials, and lower energy consumption-could help safeguard environmental resources and eventually replace synthetic composites and conventional materials. Natural Fiber Composites explores the growing use of natural fibers in composites and covers material properties, treatment and processing, modeling, applications, design, and other vital information on this subject. Improve the Strength of Manufactured Composites, and Determine the Best Processing Technique Incorporating independent pieces written by a team of international contributors, this book enables readers to analyze and design structural components using state-of-the-art information and methods. It provides an overview of natural fiber composites, details the superior specific mechanical properties of these materials, and presents development techniques and design case studies that can improve performance and enhance the process. Natural Fiber Composites evaluates the value of natural fibers in composite materials, and offers introductory knowledge on natural fiber composites backed by internationally recognized experts in the field.

The text focuses on the basic issues and also the literature of the past decade. The book provides a broad overview of functional synthetic polymers. Special issues in the text are: Surface functionalization supramolecular polymers, shape memory polymers, foldable polymers, functionalized biopolymers, supercapacitors, photovoltaic issues, lithography, cleaning methods, such as recovery of gold ions olefin/paraffin, separation by polymeric membranes, ultrafiltration membranes, and other related topics.

The 2nd volume on applications with discuss the various aspects of state-of-the-art, new challenges and opportunities for gas and vapor separation of polymer membranes, membranes for wastewater treatment, polymer electrolyte membranes and methanol fuel cells, polymer membranes for water desalination, optical, electrochemical and anion/polyanion sensors, polymeric pervaporation membranes, organic-organic separation, biopolymer electrolytes for energy devices, carbon nanoparticles for pervaporation polymeric membranes, and mixed matrix membranes for nanofiltration application.

Polymers are an important part in everyday life; products made from polymers range from sophisticated articles, such as biomaterials, to aerospace materials. One of the reasons for the great popularity exhibited by polymers is their ease of processing. Polymer properties can be tailored to meet specific needs by varying the "atomic composition" of the repeat structure, by varying molecular weight and by the incorporation (via covalent and non-covalent interactions) of an enormous range of compounds to impart specific activities.

In food science, the use of polymeric materials is widely explored, from both an engineering and a nutraceutical point of view. Regarding the engineering application, researchers have discovered the most suitable materials for intelligent packaging which preserves the food quality and prolongs the shelf-life of the products. Furthermore, in agriculture, specific functionalized polymers are used to increase the efficiency of treatments and reduce the environmental pollution. In the nutraceutical field, because consumers are increasingly conscious of the relationship between diet and health, the consumption of high quality foods has been growing continuously. Different compounds (e.g. high quality proteins, lipids and polysaccharides) are well known to contribute to the enhancement of human health by different mechanisms, reducing the risk of cardiovascular disease, coronary disease, and hypertension.

This second volume focuses on the importance of polymers and functional food and in food processing.

Biodegradable Polymers in the Circular Plastics Economy A comprehensive overview of the burgeoning field of biodegradable plastics As the lasting impact of humanity's reliance on plastics comes into focus, scholars have begun to seek out solutions to plastic litter. In Biodegradable Polymers in the Circular Plastics Economy, an accomplished team of researchers delivers a focused guide (1) to understand plastic degradation and its role in waste hierarchy besides recycling, and (2) to create and use biodegradable plastics where appropriate. Created preferably from renewable resources, these eco-friendly polymers provide an opportunity to create sustainable and lasting solutions to the growing plastic-driven pollution problem. The broad approach to this handbook allows the authors to cover all aspects of these emerging materials, ranging from the problems present in the current plastics cycle, to the differences in type, production, and chemistry available within these systems, to end-of-life via recycling or degradation, and to life-cycle assessments. It also delves into potential commercial and policy issues to be addressed to successfully deploy this technology. Readers will also find: A thorough introduction to biodegradable polymers, focusing not only on the scientific aspects, but also addressing the larger political, commercial, and consumer concerns Mechanisms of biodegradation and the environmental impact of persistent polymers An in-depth discussion of degradable/hydrolysable polyesters, polysaccharides, lignin-based polymers, and vitrimers Management of plastic waste and life cycle assessment of bio-based plastics Biodegradable Polymers in the Circular Plastics Economy is the perfect overview of this complicated but essential research field and will appeal to polymer chemists, environmental chemists, chemical engineers, and bioengineers in academia and industry. The book is intended as a step towards a circular plastics economy that relies heavily on degradable plastics to sustain it.

This book examines the plastic design and behaviour of main frames, both low rise industrial and agricultural, and multi-storey. Topics which concern practitioners and students alike such as member and frame stability, restraints and connections are covered in clear and detailed presentations. The explanations are backed up by a large number of diagrams and numerous worked examples. The book is published on behalf of the Steel Construction Institute and has been written on their behalf by Professor J.M. Davies of the University of Manchester and Brian Brown, chartered structural engineer.

This book offers recommendations on the milling processes for the carbon fiber reinforced plastic CFRP/Al2024. Due to the anisotropic and non-homogeneous structure of CFRP and the ductile nature of aluminum, the machining of this material is very challenging and causes various types of damage, such as matrix cracking and thermal alterations, fiber pullout and fuzzing during drilling and trimming, which affect the quality of machined surface. The book studies and models the machined surface quality of CFRP/Al2024 using a two-level full factorial design experiment. It describes the processes of trimming using down milling, and statistically and graphically analyzes the influence and interaction of cutting parameters. Lastly, the book presents the optimization of the cutting parameters in order to create a surface texture quality of CFRP/Al2024 to less than 1 m.

Vom Mechanismus bis zur Theorie, von verschiedenen Methoden bis zu Anwendungen in der Materialwissenschaft, der industriellen Chemie und der Medizin: Dieses umfassende Universalwerk ist die massgebliche Referenz im Bereich der RAFT-Polymerisation, herausgegeben von den fuhrenden Wissenschaftlern auf diesem Gebiet.

"High Performance Polymers and Their Nanocomposites" fasst die unzahligen Forschungsergebnisse aus der jungsten Zeit im Bereich der Hochleistungspolymere zusammen, u. a. Nanokomposite auf Basis von Hochleistungspolymeren, Flussigkristallpolymere, Polyamid 4, 6, Polyamidimide, Polyacrylamide, Komposite auf Basis von Polyacrylamiden fur verschiedene Anwendungen, Polybenzimidazole, Polycyclohexylen-Dimethylterephthalate, Polyetheretherketone, Polyetherimide, Polyetherketoneketone, Polyetherfulfone, Polyphenylensulfide, Polyphenylsulfone, Polyphthalamide, Polysulfone, eigenverstarkte Polyphenylene, thermoplastische Polyimide.

Born out of 15 years of courses and lectures on continuum mechanics, nonlinear mechanics, continuum thermodynamics, viscoelasticity, plasticity, crystal plasticity, and thermodynamic plasticity, The Mechanical and Thermodynamical Theory of Plasticity represents one of the most extensive and in-depth treatises on the mechanical and thermodynamical aspects of plastic and visicoplastic flow. Suitable for student readers and experts alike, it offers a clear and comprehensive presentation of multi-dimensional continuum thermodynamics to both aid in initial understanding and introduce and explore advanced topics.

Covering a wide range of foundational subjects and presenting unique insights into the unification of disparate theories and practices, this book offers an extensive number of problems, figures, and examples to help the reader grasp the subject from many levels. Starting from one-dimensional axial motion in bars, the book builds a clear understanding of mechanics and continuum thermodynamics during plastic flow. This approach makes it accessible and applicable for a varied audience, including students and experts from engineering mechanics, mechanical engineering, civil engineering, and materials science.

Industrial Polymer Applications provides a comprehensive overview of the diverse properties and applications of thermoset and thermoplastic polymer technologies used routinely in the modification, protection, repair, restoration and bonding of the main classes of industrial engineering materials such as concrete, masonry, wood, metal, rubber, plastic, glass and advanced ceramics. The Author, with extensive industrial experience in the design and development of polymeric adhesives, composites, concrete repair and industrial coatings materials, provides a balanced perspective of the essential chemistries and technologies for each of the relevant polymeric solutions. This book includes explanations as to why polymers are needed and the specific problems and key industrial application challenges that can be overcome for each class of engineering material. The use of supplementary information boxes, suggestions for further reading, and supportive appendices including worked examples delivers an easy to understand guide of relevant industrial applications of polymers. Written in an accessible way, the book provides a supplementary text for undergraduates, postgraduates and industrialists who have studied or are involved in chemistry, polymer chemistry, industrial chemistry, materials science, chemical engineering, mechanical engineering, civil engineering or corrosion engineering, science and technology.

Carraher's Polymer Chemistry, Tenth Edition integrates the core areas of polymer science. Along with updating of each chapter, newly added content reflects the growing applications in Biochemistry, Biomaterials, and Sustainable Industries. Providing a user-friendly approach to the world of polymeric materials, the book allows students to integrate their chemical knowledge and establish a connection between fundamental and applied chemical information. It contains all of the elements of an introductory text with synthesis, property, application, and characterization. Special sections in each chapter contain definitions, learning objectives, questions, case studies and additional reading.

The field of powder-binder shaping is growing to reach levels of great commercial significance. Shaping technologies based on powder-binder formulations apply to a broad array of engineering components and even reach into medical implants and aerospace components. Powder-binder formulations have also evolved in the form of additive manufacturing, allowing component production without tooling. This fundamental and practical guide focuses on the basic principles and options available for the application of polymers and natural organics to powder processing. It links the material, powder characteristics, forming process, and product attributes together to give the first unified treatment on polymer assisted powder processing. The processes discussed include uniaxial die compaction, injection molding, tape casting, extrusion, slip casting, slurry casting, and additive manufacturing. In each process, the technical requirements are outlined and the polymer candidates are identified. This book bridges the practical aspects of cost, availability, and safety with fundamental structure, properties, processing, and tests. Each chapter concludes with a review of current industrial standards and examples of practices.

Evolved gas analysis (EGA) describes analysis of gases or volatile components evolved from a sample undergoing thermal analysis. It is often used in direct combination with chemical analysis techniques such as gas chromatography, IR spectroscopy, or mass spectrometry, and/or with thermogravimetric analysis (TGA), i.e. measuring the change in weight of the sample under controlled conditions. This book focuses on these so-called ""hyphenated techniques"" (EGA-TGA, TGA-GC/MS, etc.), which allow a great deal of chemical information about a sample to be revealed quickly and conveniently. The methods are highly applicable to polymer/plastics samples, but also to other materials including pharmaceuticals, biomass, and various organic and inorganic compounds. Examples of applications related to all these material types are provided in this book. This book provides practical help to anyone interested in the practical aspects of EGA-TGA, including those working in testing laboratories and their clients.

With a focus on structure-property relationships, this book describes how polymer morphology affects properties and how scientists can modify them. The book covers structure development, theory, simulation, and processing; and discusses a broad range of techniques and methods. Provides an up-to-date, comprehensive introduction to the principles and practices of polymer morphology Illustrates major structure types, such as semicrystalline morphology, surface-induced polymer crystallization, phase separation, self-assembly, deformation, and surface topography Covers a variety of polymers, such as homopolymers, block copolymers, polymer thin films, polymer blends, and polymer nanocomposites Discusses a broad range of advanced and novel techniques and methods, like x-ray diffraction, thermal analysis, and electron microscopy and their applications in the morphology of polymer materials

The MRS Symposium Proceeding series is an internationally recognised reference suitable for researchers and practitioners.

For many years, electroactive ceramic, magnetostrictive material and shape memory alloys have been the primary source of actuation materials for manipulation and mobility systems. Electroactive polymers (EAPs) received relatively little attention due to their limited capability. However, effective EAP materials have emerged, changing the paradigm of these materials' capability and potential. Their main attractive characteristic is the operation similarity to biological muscles, where under electrical excitation a large displacement is induced. The potential to operate biologically inspired mechanisms using EAPs as artificial muscles and organs offers exciting applications. This book promotes technical exchange of EAP research and development, as well as provides a forum for progress reports. Generally, two groups of materials are covered-dry EAPs and wet EAPs. While overall the dry types require high voltage for their operation, they also provide larger mechanical energy density and can hold a displacement under a DC voltage. Topics include: applications; ferroelectric polymers; piezoelectric, electrostrictive, and dielectric elastomers; conductive polymers; polymer gels and muscles and composites and others.

Increasing research and development efforts have been dedicated to the field of electroresponsive polymers (ERPs), including the development of materials and devices. In addition to their exceptional physical properties and low manufacturing costs, these materials also show remarkable charge storage and electrical properties. One particular class of these materials is the electroactive polymer (EAP), or artificial muscle - a new type of smart material with a broad range of potential applications such as electromechanical devices, energy storage devices, artificial muscles, air filtration, insulation, etc. This book shows research and commercial advances in the field and highlights the significant industry involvement: 3M is implementing piezomaterials in stethoscopes; Measurement Specialties Inc. highlights a range products employing PVDF sensors and EMFIT Ltd. presents ferroelectrets, in which microporous polymers show a piezoelectric coefficient at the level of 300 pC/N. Additional topics include: sensors and their applications; polymer actuators and their applications; and polymer dielectrics and charge storage applications.

This volume documents the proceedings of the "Second International Symposium on Polyimides and Other High Temperature Polymers: Synthesis, Characterization and Applications, held in Newark, New Jersey, December 3-6, 2001.
Polyimides possess many desirable attributes, so this class of materials has found applications in many technologies ranging from microelectronics to high temperature adhesives to membranes.
This volume contains a total of 32 papers, all rigorously peer reviewed and revised before inclusion, addressing many aspects and new developments in polyimides and other high temperature polymers. The book is divided into two parts: Synthesis, Properties and Bulk Characterization and Surface Modification, Interfacial or Adhesion Aspects and Applications. The topics covered include: synthesis and characterization of a variety of polyimides; photoalignable polyimides; high-modulus poly(p-phenylenepyromellitimide) films; structure-property relationships in polyimides; aromatic benzoxazole polymers; polybenzobisthiazoles; polyimide L-B films; transport of water in high Tg polymers; surface modification of polyimides; adhesion of metal films to polyimide and other polymers; investigation of interfacial interactions between metals and polymers; polyimide film surface properties; applications of polyimides in microelectronics, as membranes for gas separation, as composite films; fabrication of thin-film transistors on polyimide films; polyimide modified with fullerenes; semicrystalline polyimides for advanced composites; and wear performance of polyetherimide composite.

This book provides understanding of raw materials, manufacturing and biomedical applications of different polymeric and natural composites such as drug delivery, growth factor delivery, orthopedics, dentistry and wound dressing.

Demonstrating through examples, this book presents a mechanism-based perspective on the broad range of deformation and fracture response of solid polymers. It draws on the results of probing experiments and considers the similar mechanical responses of amorphous metals and inorganic compounds to develop advanced methodology for generating more precise forms of modelling. This, in turn, provides a better fundamental understanding of deformation and fracture phenomena in solid polymers. Such mechanism-based constitutive response forms have far-reaching application potential in the prediction of structural responses and in tailoring special microstructures for tough behaviour. Moreover, they can guide the development of computational codes for deformation processing of polymers at any level. Applications are wide-ranging, from large strain industrial deformation texturing to production of precision micro-fluidic devices, making this book of interest to both advanced graduate students and to practising professionals.