Delamination Behaviour of Composites
Delamination Behaviour of Composites

Author: Srinivasan Sridharan

Publisher: Elsevier

Published: 2008-10-21

Total Pages: 787

ISBN-13: 1845694821

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Given such advantages as low weight compared to strength and toughness, laminated composites are now used in a wide range of applications. Their increasing use has underlined the need to understand their principal mode of failure, delamination. This important book reviews key research in understanding and preventing delamination.The first part of the book reviews general issues such as the role of fracture mechanics in understanding delamination, design issues and ways of testing delamination resistance. Part two describes techniques for detecting and characterising delamination such as piezoelectric sensors, the use of lamb waves and acoustic emission techniques. The next two sections of the book discuss ways of studying and modelling delamination behaviour. The final part of the book reviews research on delamination behaviour in particular conditions such as shell and sandwich structures, z-pin bridging and resin bonding.With its distinguished editor and international team of contributors, Delamination behaviour of composites is a standard reference for all those researching laminated composites and using them in such diverse applications as microelectronics, aerospace, marine, automotive and civil engineering. - Reviews the role of fracture mechanics in understanding delamination, design issues and ways of testing delamination resistance - Discuss ways of studying and modelling delamination behaviour - A standard reference for all those researching laminated composites

Ant Colony Optimization
Ant Colony Optimization

Author: Avi Ostfeld

Publisher: IntechOpen

Published: 2011-02-04

Total Pages: 0

ISBN-13: 9789533071572

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Ants communicate information by leaving pheromone tracks. A moving ant leaves, in varying quantities, some pheromone on the ground to mark its way. While an isolated ant moves essentially at random, an ant encountering a previously laid trail is able to detect it and decide with high probability to follow it, thus reinforcing the track with its own pheromone. The collective behavior that emerges is thus a positive feedback: where the more the ants following a track, the more attractive that track becomes for being followed; thus the probability with which an ant chooses a path increases with the number of ants that previously chose the same path. This elementary ant's behavior inspired the development of ant colony optimization by Marco Dorigo in 1992, constructing a meta-heuristic stochastic combinatorial computational methodology belonging to a family of related meta-heuristic methods such as simulated annealing, Tabu search and genetic algorithms. This book covers in twenty chapters state of the art methods and applications of utilizing ant colony optimization algorithms. New methods and theory such as multi colony ant algorithm based upon a new pheromone arithmetic crossover and a repulsive operator, new findings on ant colony convergence, and a diversity of engineering and science applications from transportation, water resources, electrical and computer science disciplines are presented.

Introduction to Fatigue in Metals and Composites
Introduction to Fatigue in Metals and Composites

Author: R.L. Carlson

Publisher: Springer Science & Business Media

Published: 1995-11-30

Total Pages: 302

ISBN-13: 9780412572005

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An Introduction to Fatigue in Metals and Composites provides a balanced treatment of the phenomenon of fatigue in metals, nonmetals and composites with polymeric, metallic and ceramic matrices. The applicability of the safe life philosophy of design is examined for each of the materials. Attention is also focused on the stable crack growth phase of fatigue and differences in the operative mechanisms for the various classes of materials are considered. The impacts of these differences on the development of damage tolerance strategies are examined. Among topics discussed are; variable amplitude loading with tensile and compressive overload; closure obstruction; bridging mechanisms; mixed mode states; small cracks; delamination mechanisms and environmental conditions. The arrangement and presentation of the topics are such that An Introduction to Fatigue in Metals and Composites can serve as a course text for mechanical, civil, aeronautical and astronautical engineering and material science courses as well as a reference for engineers who are concerned with fatigue testing and aircraft, automobile and engine design.

Modeling of Carbon Nanotubes, Graphene and their Composites
Modeling of Carbon Nanotubes, Graphene and their Composites

Author: Konstantinos I. Tserpes

Publisher: Springer Science & Business Media

Published: 2013-10-15

Total Pages: 341

ISBN-13: 3319012010

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A large part of the research currently being conducted in the fields of materials science and engineering mechanics is devoted to carbon nanotubes and their applications. In this process, modeling is a very attractive investigation tool due to the difficulties in manufacturing and testing of nanomaterials. Continuum modeling offers significant advantages over atomistic modeling. Furthermore, the lack of accuracy in continuum methods can be overtaken by incorporating input data either from experiments or atomistic methods. This book reviews the recent progress in continuum modeling of carbon nanotubes and their composites. The advantages and disadvantages of continuum methods over atomistic methods are comprehensively discussed. Numerical models, mainly based on the finite element method, as well as analytical models are presented in a comparative way starting from the simulation of isolated pristine and defected nanotubes and proceeding to nanotube-based composites. The ability of continuum methods to bridge different scales is emphasized. Recommendations for future research are given by focusing on what still continuum methods have to learn from the nano-scale. The scope of the book is to provide current knowledge aiming to support researchers entering the scientific area of carbon nanotubes to choose the appropriate modeling tool for accomplishing their study and place their efforts to further improve continuum methods.

Aerospace Materials and Applications
Aerospace Materials and Applications

Author: Biliyar N. Bhat

Publisher:

Published: 2018

Total Pages: 0

ISBN-13: 9781624104886

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"The present volume is focused on documenting the novel processing, fabrication, characterization, and testing approaches that are unique to aerospace materials/structures/systems"--Preface.

Design and Analysis of Composite Structures
Design and Analysis of Composite Structures

Author: Christos Kassapoglou

Publisher: John Wiley & Sons

Published: 2011-07-05

Total Pages: 303

ISBN-13: 1119957060

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Design and Analysis of Composite Structures enables graduate students and engineers to generate meaningful and robust designs of complex composite structures. Combining analysis and design methods for structural components, the book begins with simple topics such as skins and stiffeners and progresses through to entire components of fuselages and wings. Starting with basic mathematical derivation followed by simplifications used in real-world design, Design and Analysis of Composite Structures presents the level of accuracy and range of applicability of each method. Examples taken from actual applications are worked out in detail to show how the concepts are applied, solving the same design problem with different methods based on different drivers (e.g. cost or weight) to show how the final configuration changes as the requirements and approach change. Provides a toolkit of analysis and design methods to most situations encountered in practice, as well as analytical frameworks and the means to solving them for tackling less frequent problems. Presents solutions applicable to optimization schemes without having to run finite element models at each iteration, speeding up the design process and allowing examination of several more alternatives than traditional approaches. Includes guidelines showing how decisions based on manufacturing considerations affect weight and how weight optimization may adversely affect the cost. Accompanied by a website at www.wiley.com/go/kassapoglou hosting lecture slides and solutions to the exercises for instructors.

Design and Optimization of Laminated Composite Materials
Design and Optimization of Laminated Composite Materials

Author: Zafer Gürdal

Publisher: John Wiley & Sons

Published: 1999-01-28

Total Pages: 358

ISBN-13: 9780471252764

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Kompositwerkstoffe wurden traditionell in der Raumfahrt verwendet, weil Gewicht dort ein wichtiger Faktor ist. Mittlerweile hat man diese Werkstoffe auch im Bereich des Maschinenbaus eingesetzt. Dies ist das erste Buch, das Mechanik und Optimierungstechniken für Kompositwerkstoffe aufbereitet. Beigefügt ist eine Diskette mit Anwendungen und Lernprogrammen. (02/99)

Brain Tumor Immunotherapy
Brain Tumor Immunotherapy

Author: Linda M. Liau

Publisher: Springer Science & Business Media

Published: 2000-11-10

Total Pages: 369

ISBN-13: 1592590357

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An authoritative panel of researchers and clinicians critically reviews the entire field to provide a comprehensive guide to modern brain tumor immunotherapy and thereby enhance future research in this area. The contributors detail many of the key laboratory experiments and clinical protocols that are currently being investigated, integrate the available information from previous and ongoing research, and help define the current status of the field. Topics range from adoptive cellular and antibody-mediated immunotherapy of brain tumors to tumor vaccines and related strategies, and include many vanguard experimental strategies and immunological techniques for studying brain tumor immunotherapy. Cutting-edge and comprehensive, Brain Tumor Immunotherapy brings together all the important recent advances in our understanding of central nervous system tumor immunology and illustrates in powerful detail the many new applications now harnessing the immune response for brain tumor therapeutics.

Durability of Composite Systems
Durability of Composite Systems

Author: Kenneth Reifsnider

Publisher: Woodhead Publishing

Published: 2020-08-02

Total Pages: 466

ISBN-13: 012818261X

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Durability of Composite Systems meets the challenge of defining these precepts and requirements, from first principles, to applications in a diverse selection of technical fields selected to form a corpus of concepts and methodologies that define the field of durability in composite material systems as a modern discipline. That discipline includes not only the classical rigor of mechanics, physics and chemistry, but also the critical elements of thermodynamics, data analytics, and statistical uncertainty quantification as well as other requirements of the modern subject. This book provides a comprehensive summary of the field, suited to both reference and instructional use. It will be essential reading for academic and industrial researchers, materials scientists and engineers and all those working in the design, analysis and manufacture of composite material systems. - Makes essential direct and detailed connections to modern concepts and methodologies, such as machine learning, systems controls, sustainable and resilient systems, and additive manufacturing - Provides a careful balance between theory and practice so that presentations of details of methodology and philosophy are always driven by a context of applications and examples - Condenses selected information regarding the durability of composite materials in a wide spectrum of applications in the automotive, wind energy, civil engineering, medical devices, electrical systems, aerospace and nuclear fields

Structural and Failure Mechanics of Sandwich Composites
Structural and Failure Mechanics of Sandwich Composites

Author: L.A. Carlsson

Publisher: Springer Science & Business Media

Published: 2011-04-26

Total Pages: 392

ISBN-13: 1402032250

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"Structural and Failure Mechanics of Sandwich Composites" by Leif A. Carlsson and George A. Kardomateas focuses on some important deformation and failure modes of sandwich panels such as global buckling, wrinkling and local instabilities, and face/core debonding. The book also provides the mechanics background necessary for understanding deformation and failure mechanisms in sandwich panels and the response of sandwich structural parts to a variety of loadings. Specifically, first-order and high-order sandwich panel theories, and three-dimensional elasticity solutions for the structural behavior outlined in some detail. Elasticity analysis can serve as a benchmark for judging the accuracy of simplified sandwich plate, shell and beam theories. Furthermore, the book reviews test methods developed for the characterization of the constituent face and core materials, and sandwich beams and plates. The characterization of face/core debonding is a major topic of this text, and analysis methods based on fracture mechanics are described and applied to several contemporary test specimens. Test methods and results documented in the literature are included and discussed. The book will benefit structural and materials engineers and researchers with the desire to learn more about structural behavior, failure mechanisms, fracture mechanics and damage tolerance of sandwich structures.