Toughening Mechanisms in Composite Materials

Toughening Mechanisms in Composite Materials
Author: Qing-Hua Qin
Publisher: Elsevier
Total Pages: 417
Release: 2015-05-26
Genre: Technology & Engineering
ISBN: 1782422919

Toughening Mechanisms in Composite Materials aims to provide a comprehensive and technically detailed coverage of composites and their toughening mechanisms. Unique in its direct and comprehensive approach, the book presents fundamental knowledge on composites’ toughening mechanisms as well as a comprehensive treatment of numerical methods. This volume summarizes the current state-of-the-art and presents the most recent research outcomes in the field. It details the development of each of the techniques, beginning with basic principles, and new concepts are illustrated with examples wherever possible. Covers particle-reinforced composites, fibre-reinforced composites and other toughening mechanisms Analyses toughening mechanisms in a broad range of composite materials Developments in nanotube toughened composites and toughened graphene ceramic composites are examined

Toughening Mechanisms in Quasi-Brittle Materials

Toughening Mechanisms in Quasi-Brittle Materials
Author: S.P. Shah
Publisher: Springer Science & Business Media
Total Pages: 590
Release: 2012-12-06
Genre: Science
ISBN: 9401133883

A variety of ceramic materials has been recently shown to exhibit nonlinear stress strain behavior. These materials include transformation-toughened zirconia which undergoes a stress-induced crystallographic transformation in the vicinity of a propagating crack, microcracking ceramics, and ceramic-fiber reinforced ceramic matrices. Since many of these materials are under consideration for structural applications, understanding fracture in these quasi-brittle materials is essential. Portland cement concrete is a relatively brittle material. As a result mechanical behavior of concrete, conventionally reinforced concrete, prestressed concrete and fiber reinforced concrete is critically influenced by crack propagation. Crack propagation in concrete is characterized by a fracture process zone, microcracking, and aggregate bridging. Such phenomena give concrete toughening mechanisms, and as a result, the macroscopic response of concrete can be characterized as that of a quasi-brittle material. To design super high performance cement composites, it is essential to understand the complex fracture processes in concrete. A wide range of concern in design involves fracture in rock masses and rock structures. For example, prediction of the extension or initiation of fracture is important in: 1) the design of caverns (such as underground nuclear waste isolation) subjected to earthquake shaking or explosions, 2) the production of geothermal and petroleum energy, and 3) predicting and monitoring earthquakes. Depending upon the grain size and mineralogical composition, rock may also exhibit characteristics of quasi-brittle materials.

Introduction to Physical Polymer Science

Introduction to Physical Polymer Science
Author: Leslie H. Sperling
Publisher: John Wiley & Sons
Total Pages: 877
Release: 2005-11-25
Genre: Technology & Engineering
ISBN: 047175711X

An Updated Edition of the Classic Text Polymers constitute the basis for the plastics, rubber, adhesives, fiber, and coating industries. The Fourth Edition of Introduction to Physical Polymer Science acknowledges the industrial success of polymers and the advancements made in the field while continuing to deliver the comprehensive introduction to polymer science that made its predecessors classic texts. The Fourth Edition continues its coverage of amorphous and crystalline materials, glass transitions, rubber elasticity, and mechanical behavior, and offers updated discussions of polymer blends, composites, and interfaces, as well as such basics as molecular weight determination. Thus, interrelationships among molecular structure, morphology, and mechanical behavior of polymers continue to provide much of the value of the book. Newly introduced topics include: Nanocomposites, including carbon nanotubes and exfoliated montmorillonite clays The structure, motions, and functions of DNA and proteins, as well as the interfaces of polymeric biomaterials with living organisms The glass transition behavior of nano-thin plastic films In addition, new sections have been included on fire retardancy, friction and wear, optical tweezers, and more. Introduction to Physical Polymer Science, Fourth Edition provides both an essential introduction to the field as well as an entry point to the latest research and developments in polymer science and engineering, making it an indispensable text for chemistry, chemical engineering, materials science and engineering, and polymer science and engineering students and professionals.

Fiber-Reinforced Nanocomposites: Fundamentals and Applications

Fiber-Reinforced Nanocomposites: Fundamentals and Applications
Author: Baoguo Han
Publisher: Elsevier
Total Pages: 605
Release: 2020-03-13
Genre: Technology & Engineering
ISBN: 0128199105

Fiber-reinforced Nanocomposites: Fundamentals and Applications explores the fundamental concepts and emerging applications of fiber-reinforced nanocomposites in the automobile, aerospace, transportation, construction, sporting goods, optics, electronics, acoustics and environmental sector. In addition, the book provides a detailed overview of the properties of fiber-reinforced nanocomposites, including discussion on embedding these high-strength fibers in matrices. Due to the mismatch in structure, density, strain and thermal expansion coefficients between matrix and fibers, their thermo-mechanical properties strongly depend not only on the preparative methods, but also on the interaction between reinforcing phase and matrix phase. This book offers a concise overview of these advances and how they are leading to the creation of stronger, more durable classes of nanocomposite materials. Explores the interaction between fiber, nanoreinforcers and matrices at the nanoscale Shows how the properties of fiber-enforced nanocomposites are ideal for use for a variety of consumer products Outlines the major challenges to creating fiber-reinforced nanocomposites effectively

Toughening Mechanisms in Continuous Filament Unidirectionally Reinforced Composites

Toughening Mechanisms in Continuous Filament Unidirectionally Reinforced Composites
Author: RC. Jones
Publisher:
Total Pages: 17
Release: 1972
Genre: Composite materials
ISBN:

The fracture toughness perpendicular to the reinforcement of a composite is much greater than the volume fraction average of the fracture toughnesses of its components. Several years ago Outwater and Mandell independently proposed that the high toughness of glass reinforced plastics is due to the tensile energy stored in the debonded region for the fibers in the vicinity of the fracture surface. Using appropriate modifications of Irwin's expression for the strain energy release rate, this concept is shown to be valid in other composite systems as well. Analogies also extend its use to composites with ductile fibers and elastoplastic matrices. The data imply that the toughness contribution of the fiber to the overall composite toughness is proportional to the irrecoverable energy in the fiber, that is, the elastic and plastic energy within a debonded region of the fiber or within a portion of the fiber encased by matrix material that has yielded. The results obtained here, in conjunction with the Outwater-Mandell toughening mechanism, lead to a unified concept of toughening in fiber reinforced materials.

Residual Stresses in Composite Materials

Residual Stresses in Composite Materials
Author: Mahmood M. Shokrieh
Publisher: Woodhead Publishing
Total Pages: 407
Release: 2014-02-14
Genre: Technology & Engineering
ISBN: 0857098594

Residual stresses are a common phenomenon in composite materials. They can either add to or significantly reduce material strength. Because of the increasing demand for high-strength, light-weight materials such as composites and their wide range of applications in the aerospace and automotive industries, in civil infrastructure and in sporting applications, it is critical that the residual stresses of composite materials are understood and measured correctly. The first part of this important book reviews destructive and non-destructive testing (NDT) techniques for measuring residual stresses. Various mathematical (analytical and numerical) methods for calculation of residual stresses in composite materials are also presented. Chapters in the first section of the book discuss the simulated hole drilling method, the slitting/crack compliance method, measuring residual stresses in homogeneous and composite glass materials using photoelastic techniques, and modeling residual stresses in composite materials. The second part of the book discusses residual stresses in polymer matrix, metal-matrix and a range of other types of composites. Moreover, the addition of nanoparticles to the matrix of polymeric composites as a new technique for reduction of residual stresses is discussed. Residual stresses in composite materials provides a comprehensive overview of this important topic, and is an invaluable reference text for both academics and professionals working in the mechanical engineering, civil engineering, aerospace, automotive, marine and sporting industries. Reviews destructive and non-destructive testing (NDT) techniques for measuring residual stresses Discusses residual stresses in polymer matrix, metal-matrix and other types of composite Considers the addition of nanoparticles to the matrix of polymeric composites as a new technique for reduction of residual stresses

Adhesives

Adhesives
Author: Anna Rudawska
Publisher: BoD – Books on Demand
Total Pages: 400
Release: 2016-11-23
Genre: Science
ISBN: 9535127837

This book presents some information regarding adhesives which have applications in industry, medicine and dentistry. The book is divided into two parts: "Adhesives Applications in Medicine and Dentistry" and "Properties of Adhesive." The aim of such a presentation is to present the usage in very different aspects of application of the adhesives and present specific properties of adhesives. Adhesives' advantageous properties and relatively uncomplicated processing methods contribute to their increasing application and their growing popularity in the industry, medicine and other branches. Some adhesives represent properties superior to those of most adhesive materials, due to their excellent adhesion and chemical resistance. A wide variety of adhesives' considerable flexibility in modification of properties of adhesives allows adjusting the composition to particular applications.

Impact Behaviour of Fibre-Reinforced Composite Materials and Structures

Impact Behaviour of Fibre-Reinforced Composite Materials and Structures
Author: S. R. Reid
Publisher: Elsevier
Total Pages: 318
Release: 2000-10-12
Genre: Technology & Engineering
ISBN: 1855738902

This study covers impact response, damage tolerance and failure of fibre-reinforced composite materials and structures. Materials development, analysis and prediction of structural behaviour and cost-effective design all have a bearing on the impact response of composites and this book brings together for the first time the most comprehensive and up-to-date research work from leading international experts. State of the art analysis of impact response, damage tolerance and failure of FRC materials Distinguished contributors provide expert analysis of the most recent materials and structures Valuable tool for R&D engineers, materials scientists and designers

Polymer Matrix Composites and Technology

Polymer Matrix Composites and Technology
Author: Ru-Min Wang
Publisher: Elsevier
Total Pages: 570
Release: 2011-07-14
Genre: Technology & Engineering
ISBN: 0857092227

Given such properties as low density and high strength, polymer matrix composites have become a widely used material in the aerospace and other industries. Polymer matrix composites and technology provides a helpful overview of these materials, their processing and performance.After an introductory chapter, part one reviews the main reinforcement and matrix materials used as well as the nature of the interface between them. Part two discusses forming and molding technologies for polymer matrix composites. The final part of the book covers key aspects of performance, including tensile, compression, shear and bending properties as well as impact, fatigue and creep behaviour.Polymer matrix composites and technology provides both students and those in industry with a valuable introduction to and overview of this important class of materials. Provides a helpful overview of these materials, their processing and performance incorporating naming and classification of composite materials Reviews the main reinforcement and matrix materials used as well as the nature of the interface between them including damage mechanisms Discusses forming and molding technologies for polymer matrix composites outlining various techniques and technologies