Fracture Mechanics Of Delamination

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Interface Fracture and Delaminations in Composite Materials

Author : Leslie Banks-Sills
Publisher : Springer
ISBN 13 : 3319603272
Total Pages : 125 pages
Book Rating : 4.3/5 (196 download)

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Book Synopsis Interface Fracture and Delaminations in Composite Materials by : Leslie Banks-Sills

Download or read book Interface Fracture and Delaminations in Composite Materials written by Leslie Banks-Sills and published by Springer. This book was released on 2017-07-05 with total page 125 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Delamination Behaviour of Composites

Author : Srinivasan Sridharan
Publisher : Elsevier
ISBN 13 : 1845694821
Total Pages : 787 pages
Book Rating : 4.8/5 (456 download)

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Book Synopsis Delamination Behaviour of Composites by : Srinivasan Sridharan

Download or read book Delamination Behaviour of Composites written by Srinivasan Sridharan and published by Elsevier. This book was released on 2008-10-21 with total page 787 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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

The Mechanics and Reliability of Films, Multilayers and Coatings

Author : Matthew R. Begley
Publisher : Cambridge University Press
ISBN 13 : 1108132731
Total Pages : 289 pages
Book Rating : 4.1/5 (81 download)

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Book Synopsis The Mechanics and Reliability of Films, Multilayers and Coatings by : Matthew R. Begley

Download or read book The Mechanics and Reliability of Films, Multilayers and Coatings written by Matthew R. Begley and published by Cambridge University Press. This book was released on 2017-03-24 with total page 289 pages. Available in PDF, EPUB and Kindle. Book excerpt: A wide variety of applications ranging from microelectronics to turbines for propulsion and power generation rely on films, coatings, and multilayers to improve performance. As such, the ability to predict coating failure - such as delamination (debonding), mud-cracking, blistering, crack kinking, and the like - is critical to component design and development. This work compiles and organizes decades of research that established the theoretical foundation for predicting such failure mechanisms, and clearly outlines the methodology needed to predict performance. Detailed coverage of cracking in multilayers is provided, with an emphasis on the role of differences in thermoelastic properties between the layers. The comprehensive theoretical foundation of the book is complemented by easy-to-use analysis codes designed to empower novices with the tools needed to simulate cracking; these codes enable not only precise quantitative reproduction of results presented graphically in the literature, but also the generation of new results for more complex multilayered systems.

The Virtual Crack Closure Technique: History, Approach and Applications

Author : Ronald Krueger
Publisher :
ISBN 13 :
Total Pages : 66 pages
Book Rating : 4.:/5 (317 download)

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Book Synopsis The Virtual Crack Closure Technique: History, Approach and Applications by : Ronald Krueger

Download or read book The Virtual Crack Closure Technique: History, Approach and Applications written by Ronald Krueger and published by . This book was released on 2002 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt: An overview of the virtual crack closure technique is presented. The approach used is discussed, the history summarized, and insight into its applications provided. Equations for two-dimensional quadrilateral elements with linear and quadratic shape functions are given. Formula for applying the technique in conjuction with three-dimensional solid elements as well as plate/shell elements are also provided. Necessary modifications for the use of the method with geometrically nonlinear finite element analysis and corrections required for elements at the crack tip with different lengths and widths are discussed. The problems associated with cracks or delaminations propagating between different materials are mentioned briefly, as well as a strategy to minimize these problems. Due to an increased interest in using a fracture mechanics based approach to assess the damage tolerance of composite structures in the design phase and during certification, the engineering problems selected as examples and given as references focus on the application of the technique to components made of composite materials.

Fracture Mechanics Testing Methods for Polymers, Adhesives and Composites

Author : D.R. Moore
Publisher : Elsevier
ISBN 13 : 0080531962
Total Pages : 389 pages
Book Rating : 4.0/5 (85 download)

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Book Synopsis Fracture Mechanics Testing Methods for Polymers, Adhesives and Composites by : D.R. Moore

Download or read book Fracture Mechanics Testing Methods for Polymers, Adhesives and Composites written by D.R. Moore and published by Elsevier. This book was released on 2001-03-09 with total page 389 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is an overview of ESIS Technical Committee 4's activities since the mid-1980s. A wide range of tests is described and the numerous authors is a reflection of the wide and enthusiastic support we have had. With the establishment of the Technical Committee 4, two major areas were identified as appropriate for the activity. Firstly there was an urgent need for standard, fracture mechanics based, test methods to be designed for polymers and composites. A good deal of academic work had been done, but the usefulness to industry was limited by the lack of agreed standards. Secondly there was a perceived need to explore the use of such data in the design of plastic parts. Some modest efforts were made in early meetings to explore this, but little progress was made. In contrast things moved along briskly in the standards work and this has dominated the activity for the last fourteen years. The design issue remains a future goal.

Fracture Mechanics of Matrix Cracking and Delamination in Glass/epoxy Laminates

Author : M. Caslini
Publisher :
ISBN 13 :
Total Pages : 46 pages
Book Rating : 4.:/5 (317 download)

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Book Synopsis Fracture Mechanics of Matrix Cracking and Delamination in Glass/epoxy Laminates by : M. Caslini

Download or read book Fracture Mechanics of Matrix Cracking and Delamination in Glass/epoxy Laminates written by M. Caslini and published by . This book was released on 1986 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study focused on characterizing matrix cracking and delamination behavior in multidirectional laminates. Static tension and tension-tension fatigue tests were conducted on two different layups. Damage onset, accumulation, and residual properties were measured. Matrix cracking was shown to have a considerable influence on residual stiffness of glass epoxy laminates, and could be predicted reasonably well for cracks in 90 deg plies using a simple shear lag analysis. A fracture mechanics analysis for the strain energy release rate associated with 90 deg ply matrix crack formation was developed and was shown to correlate the onset of 90 deg ply cracks in different laminates. The linear degradation of laminate modulus with delamination area, previously observed for graphite epoxy laminates, was predicted for glass epoxy laminates using a simple rule of mixtures analysis. The strain energy release rate associated with edge delamination formation under static and cyclic loading was difficult to analyze because of the presence of several contemporary damage phenomena. Keywords: Fatigue(Mechanics), and Stiffness loss.

Delamination Buckling of Composite Materials

Author : L. Kachanov
Publisher : Springer Science & Business Media
ISBN 13 : 940092819X
Total Pages : 101 pages
Book Rating : 4.4/5 (9 download)

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Book Synopsis Delamination Buckling of Composite Materials by : L. Kachanov

Download or read book Delamination Buckling of Composite Materials written by L. Kachanov and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 101 pages. Available in PDF, EPUB and Kindle. Book excerpt: LIOn Delamination of Laminated Composites (a) Fiber-Reinforced Composites Considerable technological advances in the production of high-strength fibers (graphite, boron, etc.) have led to a wide use of light high-strength composite materials (graphite epoxy, boron-epoxy, etc.). It is expedient, to make thin walled composite rods, plates, and shells from such materials. Plates can be made by bonding a set of unidirectional thin fiber layers, Fig.l.l. Such plates are orthotropic, as a rule. A random short-fiber composite is shown in Fig. 1.2. Fiber-reinforced composites are widely used in thin-walled aircraft structures because of their specific high strength. For example, the graphite-epoxy composite is characterized by a unidirectional tensile strength of 1.4 GPa while the density is 1.6 Mg/rrt? . For comparison, we may take a steel (steel 4340) whose corresponding properties are identified by values like 1.2 GPa and 7.8 Mg/rrt? . 1. INTRODUCTION Figure 1.1 2 1.1. On Delamination of Laminated Composites Figure 1.2 3 1. INTRODUCTION It is characteristic for laminated plastic material to possess a fairly low bonding. Therefore, low-velocity impacts and defects in manufacturing lead to local delamination. (b) Linear Problems of Delamination Buckling Delamination can significantly reduce the compressive strength and stiffness of the laminate. Local delamination can be considered as a crack in the bond. Under buckling there appears a high interlaminate stress at the crack edge that leads to a spreading of the crack. Delamination growth can lead to structural instability.

XFEM Fracture Analysis of Composites

Author : Soheil Mohammadi
Publisher : John Wiley & Sons
ISBN 13 : 1118443381
Total Pages : 1 pages
Book Rating : 4.1/5 (184 download)

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Book Synopsis XFEM Fracture Analysis of Composites by : Soheil Mohammadi

Download or read book XFEM Fracture Analysis of Composites written by Soheil Mohammadi and published by John Wiley & Sons. This book was released on 2012-08-27 with total page 1 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the basics and developments of the new XFEM approach to fracture analysis of composite structures and materials. It provides state of the art techniques and algorithms for fracture analysis of structures including numeric examples at the end of each chapter as well as an accompanying website which will include MATLAB resources, executables, data files, and simulation procedures of XFEM. The first reference text for the extended finite element method (XFEM) for fracture analysis of structures and materials Includes theory and applications, with worked numerical problems and solutions, and MATLAB examples on an accompanying website with further XFEM resources Provides a comprehensive overview of this new area of research, including a review of Fracture Mechanics, basic through to advanced XFEM theory, as well as current problems and applications Includes a chapter on the future developments in the field, new research areas and possible future applications of the method

Fracture Mechanics

Author : Ravinder Chona
Publisher : ASTM International
ISBN 13 : 0803118678
Total Pages : 864 pages
Book Rating : 4.8/5 (31 download)

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Book Synopsis Fracture Mechanics by : Ravinder Chona

Download or read book Fracture Mechanics written by Ravinder Chona and published by ASTM International. This book was released on 1993 with total page 864 pages. Available in PDF, EPUB and Kindle. Book excerpt: The proceedings of the 23rd National Symposium on Fracture Mechanics, held in College Station, Texas, June 1991, present a broad overview of the current state of the art in fracture mechanics research. Following the Swerdlow Lecture (Structural Problems in Search of Fracture Mechanics Solutions by

Mechanics of Fracture Initiation and Propagation

Author : George C. Sih
Publisher : Springer
ISBN 13 :
Total Pages : 440 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Mechanics of Fracture Initiation and Propagation by : George C. Sih

Download or read book Mechanics of Fracture Initiation and Propagation written by George C. Sih and published by Springer. This book was released on 1991-04-30 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: The assessment of crack initiation and/or propagation has been the subject of many past discussions on fracture mechanics. Depending on how the chosen failure criterion is combined with the solution of a particular theory of continuum mechanics, the outcome could vary over a wide range. Mod elling of the material damage process could be elusive if the scale level of observation is left undefined. The specification of physical dimension alone is not sufficient because time and temperature also play an intimate role. It is only when the latter two variables are fixed that failure predictions can be simplified. The sudden fracture of material with a pre-existing crack is a case in point. Barring changes in the local temperature,* the energy released to create a unit surface area of an existing crack can be obtained by considering the change in elastic energy of the system before and after crack extension. Such a quantity has been referred to as the critical energy release rate, G e, or stress intensity factor, K Ie. Other parameters, such as the crack opening displacement (COD), path-independent J-integral, etc. , have been proposed; their relation to the fracture process is also based on the energy release concept. These one-parameter approaches, however, are unable simultaneously to account for the failure process of crack initiation, propagation and onset of rapid fracture. A review on the use of G, K I, COD, J, etc. , has been made by Sih [1,2].

Fracture of Polymers, Composites and Adhesives

Author : A Pavan
Publisher : Elsevier
ISBN 13 : 0080532004
Total Pages : 439 pages
Book Rating : 4.0/5 (85 download)

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Book Synopsis Fracture of Polymers, Composites and Adhesives by : A Pavan

Download or read book Fracture of Polymers, Composites and Adhesives written by A Pavan and published by Elsevier. This book was released on 2000-10-10 with total page 439 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains a selection of fully peer-reviewed papers which were presented at the 2nd ESIS TC4 Conference, held in Les Diablerets, Switzerland 13 - 15 September 1999. The meeting was designed to reflect the activities of the Committee over the last 15 years, and to plan future activities. The papers have been divided into four chapters under the headings of Composites, Elastic-Plastic Fracture, Adhesion, and Impact and General Fracture. These are convenient groupings, but there are many interactions between the areas, with the common theme of Fracture Mechanics underlying it all.

Marine Applications of Advanced Fibre-reinforced Composites

Author : Jasper Graham-Jones
Publisher : Woodhead Publishing
ISBN 13 : 0081002009
Total Pages : 361 pages
Book Rating : 4.0/5 (81 download)

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Book Synopsis Marine Applications of Advanced Fibre-reinforced Composites by : Jasper Graham-Jones

Download or read book Marine Applications of Advanced Fibre-reinforced Composites written by Jasper Graham-Jones and published by Woodhead Publishing. This book was released on 2015-09-28 with total page 361 pages. Available in PDF, EPUB and Kindle. Book excerpt: The marine environment presents significant challenges for materials due to the potential for corrosion by salt water, extreme pressures when deeply submerged and high stresses arising from variable weather. Well-designed fibre-reinforced composites can perform effectively in the marine environment and are lightweight alternatives to metal components and more durable than wood. Marine Applications of Advanced Fibre-Reinforced Composites examines the technology, application and environmental considerations in choosing a fibre-reinforced composite system for use in marine structures. This book is divided into two parts. The chapters in Part One explore the manufacture, mechanical behavior and structural performance of marine composites, and also look at the testing of these composites and end of life environmental considerations. The chapters in Part Two then investigate the applications of marine composites, specifically for renewable energy devices, offshore oil and gas applications, rigging and sails. Underwater repair of marine composites is also reviewed. - Comprehensively examines all aspects of fibre-reinforced marine composites, including the latest advances in design, manufacturing methods and performance - Assesses the environmental impacts of using fibre-reinforced composites in marine environments, including end of life considerations - Reviews advanced fibre-reinforced composites for renewable energy devices, rigging, sail textiles, sail shape optimisation and offshore oil and gas applications

Multiscale Modelling of Damage and Fracture Processes in Composite Materials

Author : Tomasz Sadowski
Publisher : Springer Science & Business Media
ISBN 13 : 3211381023
Total Pages : 315 pages
Book Rating : 4.2/5 (113 download)

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Book Synopsis Multiscale Modelling of Damage and Fracture Processes in Composite Materials by : Tomasz Sadowski

Download or read book Multiscale Modelling of Damage and Fracture Processes in Composite Materials written by Tomasz Sadowski and published by Springer Science & Business Media. This book was released on 2007-03-23 with total page 315 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book explores damage growth and fracture processes in cementitious, ceramic, polymer and metal matrix composites, integrating properties like stiffness and strength with observation at below macroscopic scale. Advances in multiscale modelling and analysis pertain directly to materials which either have a range of relevant microstructural scales, like metals, or do not have a well-defined microstructure, like cementitious or ceramic composites.

Mechanics of Fatigue

Author : Vladimir V. Bolotin
Publisher : CRC Press
ISBN 13 : 9780849396632
Total Pages : 210 pages
Book Rating : 4.3/5 (966 download)

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Book Synopsis Mechanics of Fatigue by : Vladimir V. Bolotin

Download or read book Mechanics of Fatigue written by Vladimir V. Bolotin and published by CRC Press. This book was released on 1999-06-24 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mechanics of Fatigue addresses the range of topics concerning damage, fatigue, and fracture of engineering materials and structures. The core of this resource builds upon the synthesis of micro- and macro-mechanics of fracture. In micromechanics, both the modeling of mechanical phenomena on the level of material structure and the continuous approach are based on the use of certain internal field parameters characterizing the dispersed micro-damage. This is referred to as continuum damage mechanics. The author develops his own theory for macromechanics, called analytical fracture mechanics. This term means the system cracked body - loading or loading device - is considered as a mechanical system and the tools of analytical (rational) mechanics are applied thoroughly to describe crack propagation until the final failure. Chapter discuss: preliminary information on fatigue and engineering methods for design of machines and structures against failures caused by fatigue fatigue crack nucleation, including microstructural and continuous models theory of fatigue crack propagation fatigue crack growth in linear elastic materials subject to dispersed damage fatigue cracks in elasto-plastic material, including crack growth retardation due to overloading as well as quasistationary approximation fatigue and related phenomena in hereditary solids application of the theory fatigue crack growth considering environmental factors unidirectional fiber composites with ductile matrix and brittle, initially continuous fibers laminate composites Mechanics of Fatigue serves students dealing with mechanical aspects of fatigue, conducting research in fracture mechanics, structural safety, mechanics of composites, as well as modern branches of mechanics of solids and structures.

Dynamic Deformation, Damage and Fracture in Composite Materials and Structures

Author : Vadim Silberschmidt
Publisher : Elsevier
ISBN 13 : 0128239808
Total Pages : 666 pages
Book Rating : 4.1/5 (282 download)

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Book Synopsis Dynamic Deformation, Damage and Fracture in Composite Materials and Structures by : Vadim Silberschmidt

Download or read book Dynamic Deformation, Damage and Fracture in Composite Materials and Structures written by Vadim Silberschmidt and published by Elsevier. This book was released on 2022-09-15 with total page 666 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dynamic Deformation, Damage and Fracture in Composite Materials and Structures, Second Edition reviews various aspects of dynamic deformation, damage and fracture, mostly in composite laminates and sandwich structures, and in a broad range of application areas including aerospace, automotive, defense and sports engineering. This book examines low- and high-velocity loading and assesses shock, blast and penetrative events, and has been updated to cover important new developments such as the use of additive manufacturing to produce composites, including fiber-reinforced ones. New microstructural, experimental, theoretical, and numerical studies with advanced tools are included as well. The book also features four new chapters covering topics such as dynamic delamination, dynamic deformation and fracture in 3D-printed composites, ballistic impacts with fragmenting projectiles, and the effect of multiple impacting. - Examines dynamic deformation and fracture of composite materials, covering experimental, analytical and numerical aspects - Features four new chapters covering topics such as dynamic interfacial fracture, fracture in 3D-printed composites, ballistic impacts with fragmenting projectiles, and the effect of multiple impacting - Addresses important application areas such as aerospace, automotive, wind energy, defense and sports

Numerical Modelling of Failure in Advanced Composite Materials

Author : Pedro P. Camanho
Publisher : Woodhead Publishing
ISBN 13 : 0081003420
Total Pages : 562 pages
Book Rating : 4.0/5 (81 download)

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Book Synopsis Numerical Modelling of Failure in Advanced Composite Materials by : Pedro P. Camanho

Download or read book Numerical Modelling of Failure in Advanced Composite Materials written by Pedro P. Camanho and published by Woodhead Publishing. This book was released on 2015-08-07 with total page 562 pages. Available in PDF, EPUB and Kindle. Book excerpt: Numerical Modelling of Failure in Advanced Composite Materials comprehensively examines the most recent analysis techniques for advanced composite materials. Advanced composite materials are becoming increasingly important for lightweight design in aerospace, wind energy, and mechanical and civil engineering. Essential for exploiting their potential is the ability to reliably predict their mechanical behaviour, particularly the onset and propagation of failure. Part One investigates numerical modeling approaches to interlaminar failure in advanced composite materials. Part Two considers numerical modelling approaches to intralaminar failure. Part Three presents new and emerging advanced numerical algorithms for modeling and simulation of failure. Part Four closes by examining the various engineering and scientific applications of numerical modeling for analysis of failure in advanced composite materials, such as prediction of impact damage, failure in textile composites, and fracture behavior in through-thickness reinforced laminates. - Examines the most recent analysis models for advanced composite materials in a coherent and comprehensive manner - Investigates numerical modelling approaches to interlaminar failure and intralaminar failure in advanced composite materials - Reviews advanced numerical algorithms for modeling and simulation of failure - Examines various engineering and scientific applications of numerical modelling for analysis of failure in advanced composite materials

Application of Fracture Mechanics to Polymers, Adhesives and Composites

Author : D R Moore
Publisher : Elsevier
ISBN 13 : 0080553079
Total Pages : 299 pages
Book Rating : 4.0/5 (85 download)

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Book Synopsis Application of Fracture Mechanics to Polymers, Adhesives and Composites by : D R Moore

Download or read book Application of Fracture Mechanics to Polymers, Adhesives and Composites written by D R Moore and published by Elsevier. This book was released on 2003-12-04 with total page 299 pages. Available in PDF, EPUB and Kindle. Book excerpt: Application of Fracture Mechanics to Polymers, Adhesives and Composites