Interface Fracture and Delaminations in Composite Materials
Interface Fracture and Delaminations in Composite Materials

Author: Leslie Banks-Sills

Publisher: Springer

Published: 2017-07-05

Total Pages: 125

ISBN-13: 3319603272

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Part I of this SpringerBrief presents the problem of a crack between two dissimilar isotropic materials and describes the mathematical background. A fracture criterion is discussed and Methods for calculating fracture parameters such as stress intensity factors using the finite element method and three post-processors are considered. Actual test data and both deterministic and statistical failure curves are presented.In Part II of the book, similar descriptions are given for delaminations in composite laminates. The mathematical treatment of this type of damage including the first term of the asymptotic expansion of the stress and displacement fields is considered. Numerical post-processors for determining stress intensity factors for these cases are reviewed. Two examples of specific laminates are presented: one with a failure curve and the other with a failure surface. Finally, beam specimens used for testing such failures are discussed.

Cracks in composite materials
Cracks in composite materials

Author: George C. Sih

Publisher: Springer Science & Business Media

Published: 2012-12-06

Total Pages: 617

ISBN-13: 9400983409

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Composites offer great promise as light weight and strong materials for high performance structures. One of the major advantages of these materials as compared with metals is the basic way in which heterogeneity resist crack extension. In a fiber/matrix composite system, the fibers tend to cause cracks to form at closer spacing and delay the formation of a large crack. The enhancement of local failure such as fiber breaking, matrix cracking and interface debonding further reduces the energy level which might have otherwise reached the point of catastrophic failure. Even though substantial tests have been made on composite materials, little has been gained in the understanding and development of a predic tive procedure for composite failure. There are fundamental difficulties associated with incorporating the nonhomogeneous and anisotropic prop erties of the composite into the continuum mechanics analysis. Additional uncertainties arise from voids and defects that are introduced in the composite during manufacturing. Even a small quantity of mechanical imperfections can cause a marked influence on the composite strength. Moreover, the interface properties between the fibers and matrix or bonded laminae can also affect the load transmission characteristics significantly. It would be impossible to establish predictive procedures for composite failure unless realistic guidelines could be developed to control the manufacturing quality of composite systems.

Defects and Damage in Composite Materials and Structures
Defects and Damage in Composite Materials and Structures

Author: Rikard Benton Heslehurst

Publisher: CRC Press

Published: 2014-04-21

Total Pages: 216

ISBN-13: 146658047X

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The advantages of composite materials include a high specific strength and stiffness, formability, and a comparative resistance to fatigue cracking and corrosion. However, not forsaking these advantages, composite materials are prone to a wide range of defects and damage that can significantly reduce the residual strength and stiffness of a structure or result in unfavorable load paths. Emphasizing defect identification and restitution, Defects and Damage in Composite Materials and Structures explains how defects and damage in composite materials and structures impact composite component performance. Providing ready access to an extensive, descriptive list of defects and damage types, this must-have reference: Examines defect criticality in composite structures Recommends repair actions to restore structural integrity Discusses failure modes and mechanisms of composites due to defects Reviews NDI processes for finding and identifying defects in composite materials Relating defect detection methods to defect type, the author merges his experience in the field of in-service activities for composite airframe maintenance and repair with indispensable reports and articles on defects and damage in advanced composite materials from the last 50 years.

Damage and Failure of Composite Materials
Damage and Failure of Composite Materials

Author: Ramesh Talreja

Publisher: Cambridge University Press

Published: 2012-06-07

Total Pages: 315

ISBN-13: 0521819423

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Bringing together materials mechanics and modelling, this book provides a complete guide to damage mechanics of composite materials for engineers.

Toughening Mechanisms in Composite Materials
Toughening Mechanisms in Composite Materials

Author: Qing-Hua Qin

Publisher: Elsevier

Published: 2015-05-26

Total Pages: 417

ISBN-13: 1782422919

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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

Proceedings of the Third International Conference on Theoretical, Applied and Experimental Mechanics
Proceedings of the Third International Conference on Theoretical, Applied and Experimental Mechanics

Author: Emmanuel Gdoutos

Publisher: Springer Nature

Published: 2020-05-18

Total Pages: 345

ISBN-13: 3030478831

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This book presents the proceedings of the 3rd edition of the International Conference on Theoretical, Applied and Experimental Mechanics. The papers focus on all aspects of theoretical, applied and experimental mechanics, including biomechanics, composite materials, computational mechanics, constitutive modeling of materials, dynamics, elasticity, experimental mechanics, fracture mechanics, mechanical properties of materials, micromechanics, nanomechanics, plasticity, stress analysis, structures, wave propagation.

3D Discrete Element Workbench for Highly Dynamic Thermo-mechanical Analysis
3D Discrete Element Workbench for Highly Dynamic Thermo-mechanical Analysis

Author: Damien Andre

Publisher: John Wiley & Sons

Published: 2015-10-26

Total Pages: 212

ISBN-13: 1848217722

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Complex behavior models (plasticity, cracks, visco elascticity) face some theoretical difficulties for the determination of the behavior law at the continuous scale. When homogenization fails to give the right behavior law, a solution is to simulate the material at a meso scale in order to simulate directly a set of discrete properties that are responsible of the macroscopic behavior. The discrete element model has been developed for granular material. The proposed set shows how this method is capable to solve the problem of complex behavior that are linked to discrete meso scale effects. The first book solves the local problem, the second one presents a coupling approach to link the structural effects to the local ones, this third book presents the software workbench that includes all the theoretical developments.

The Structural Integrity of Carbon Fiber Composites
The Structural Integrity of Carbon Fiber Composites

Author: Peter W. R Beaumont

Publisher: Springer

Published: 2016-11-26

Total Pages: 954

ISBN-13: 3319461206

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This book brings together a diverse compilation of inter-disciplinary chapters on fundamental aspects of carbon fiber composite materials and multi-functional composite structures: including synthesis, characterization, and evaluation from the nano-structure to structure meters in length. The content and focus of contributions under the umbrella of structural integrity of composite materials embraces topics at the forefront of composite materials science and technology, the disciplines of mechanics, and development of a new predictive design methodology of the safe operation of engineering structures from cradle to grave. Multi-authored papers on multi-scale modelling of problems in material design and predicting the safe performance of engineering structure illustrate the inter-disciplinary nature of the subject. The book examines topics such as Stochastic micro-mechanics theory and application for advanced composite systems Construction of the evaluation process for structural integrity of material and structure Nano- and meso-mechanics modelling of structure evolution during the accumulation of damage Statistical meso-mechanics of composite materials Hierarchical analysis including "age-aware," high-fidelity simulation and virtual mechanical testing of composite structures right up to the point of failure. The volume is ideal for scientists, engineers, and students interested in carbon fiber composite materials, and other composite material systems.

Self-Healing Composite Materials
Self-Healing Composite Materials

Author: Anish Khan

Publisher: Woodhead Publishing

Published: 2019-10-30

Total Pages: 465

ISBN-13: 0128173556

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Self-Healing Composite Materials: From Designs to Applications provides a unique resource on self-healing composites for materials scientists and engineers in academia, as well as researchers involved in the aerospace, automotive, wind-generation, construction, consumer goods and marine industries. There is a huge demand for self-healing composites that respond to their environment like living matter. Unlike other composites, self-healing composites are combined with carbon materials and resins to form a recoverable composite material. This book covers the manufacturing, design and characterization of self-healing composites, including their morphological, structural, mechanical, thermal and electrical properties. The title begins with mathematical background and then considers innovative approaches to physical modeling, analysis and design techniques, providing a robust knowledge of modern self-healing composites with commercial applications. - Covers composite fabrication from polymer, nano oxides, epoxy and plastics - Gives detailed examples on how self-healing composites may be used - Provides readers with a robust knowledge of self-healing composites - Presents a unified approach to these human-friendly, commercially valuable materials