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Author Kassapoglou, Christos, author

Title Modeling the effect of damage in composite structures : simplified approaches / Christos Kassapoglou
Published Chichester, West Sussex, United Kingdom : Wiley, 2015
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Description 1 online resource
Series Aerospace series
Aerospace series (Chichester, England)
Contents Cover -- Title Page -- Copyright -- Contents -- Series Preface -- Preface -- Chapter 1 Damage in Composite Structures: Notch Sensitivity -- 1.1 Introduction -- 1.2 Notch Insensitivity -- 1.3 'Complete' Notch Sensitivity -- 1.4 Notch Sensitivity of Composite Materials -- Exercises -- References -- Chapter 2 Holes -- 2.1 Stresses around Holes -- 2.2 Using the Anisotropic Elasticity Solution to Predict Failure -- 2.3 The Role of the Damage Zone Created Near a Hole -- 2.4 Simplified Approaches to Predict Failure in Laminates with Holes: the Whitney-Nuismer Criteria -- 2.5 Other Approaches to Predict Failure of a Laminate with a Hole -- 2.6 Improved Whitney-Nuismer Approach -- 2.7 Application: Finding the Stacking Sequence Which Results in Good OHT Performance -- Exercises -- References -- Chapter 3 Cracks -- 3.1 Introduction -- 3.2 Modelling a Crack in a Composite Laminate -- 3.3 Finite-Width Effects -- 3.4 Other Approaches for Analysis of Cracks in Composites -- 3.5 Matrix Cracks -- Exercises -- References -- Chapter 4 Delaminations -- 4.1 Introduction -- 4.2 Relation to Inspection Methods and Criteria -- 4.3 Modelling Different Structural Details in the Presence of Delaminations -- 4.3.1 Buckling of a Through-Width Delaminating Layer -- 4.3.2 Buckling of an Elliptical Delaminating Layer -- 4.3.3 Application-Buckling of an Elliptical Delamination under Combined Loads -- 4.3.4 Onset of Delamination at a Straight Free Edge of a Composite Laminate -- 4.3.5 Delamination at a Flange-Stiffener Interface of a Composite Stiffened Panel -- 4.3.6 Double Cantilever Beam and End Notch Flexure Specimen -- 4.3.7 The Crack Closure Method -- 4.4 Strength of Materials Versus Fracture Mechanics-Use of Cohesive Elements -- 4.4.1 Use of Cohesive Elements -- Exercises -- References -- Chapter 5 Impact
5.1 Sources of Impact and General Implications for Design -- 5.2 Damage Resistance Versus Damage Tolerance -- 5.3 Modelling Impact Damage as a Hole -- 5.4 Modelling Impact Damage as a Delamination -- 5.5 Impact Damage Modelled as a Region of Reduced Stiffness -- 5.6 Application: Comparison of the Predictions of the Simpler Models with Test Results -- 5.6.1 Modelling BVID as a Hole -- 5.6.2 Modelling BVID as a Single Delamination -- 5.6.3 Modelling BVID as an Elliptical Inclusion of Reduced Stiffness -- 5.6.4 Comparisons of Analytical Predictions to Test Results-Sandwich Laminates -- 5.7 Improved Model for Impact Damage Analysed as a Region of Reduced Stiffness -- 5.7.1 Type and Extent of Damage for Given Impact Energy -- 5.7.2 Model for Predicting CAI Strength -- Exercises -- References -- Chapter 6 Fatigue Life of Composite Structures: Analytical Models -- 6.1 Introduction -- 6.2 Needed Characteristics for an Analytical Model -- 6.3 Models for the Degradation of the Residual Strength -- 6.3.1 Linear Model -- 6.3.2 Nonlinear Model -- 6.4 Model for the Cycles to Failure -- 6.4.1 Extension to Spectrum Loading -- 6.5 Residual Strength and Wear-Out Model Predictions Compared to Test Results -- 6.5.1 Residual Strength Predictions Compared to Test Results -- 6.5.2 Cycles to Failure Predictions Compared to Test Results (Constant Amplitude) -- 6.5.3 Cycles to Failure Predictions Compared to Test Results (Spectrum Loading) -- 6.6 A Proposal for the Complete Model: Accounting for Larger Scale Damage -- 6.6.1 First Cycle, Tension Portion -- 6.6.2 First Cycle, Compression Portion -- 6.6.3 Subsequent Load Cycles -- 6.6.4 Discussion -- 6.6.5 Application: Tension-Compression Fatigue of Unidirectional Composites -- 6.6.6 Application: Tension-Tension Fatigue of Cross-Ply Laminates -- Exercises -- References
Chapter 7 Effect of Damage in Composite Structures: Summary and Useful Design Guidelines -- Index -- Supplemental Images -- EULA
Summary Comprehensively covers new and existing methods for the design and analysis of composites structures with damage present Provides efficient and accurate approaches for analysing structures with holes and impact damage Introduces a new methodology for fatigue analysis of composites Provides design guidelines, and step by step descriptions of how to apply the methods, along with evaluation of their accuracy and applicability Includes problems and exercises Accompanied by a website hosting lecture slides and solutions
Bibliography Includes bibliographical references and index
Notes Online resource; title from PDF title page (John Wiley, viewed March 31, 2015)
Subject Composite construction -- Fatigue -- Mathematical models.
Composite construction -- Fatigue.
Form Electronic book
ISBN 1119013224 (electronic bk.)
1119013232 (electronic bk.)
9781119013228 (electronic bk.)
9781119013235 (electronic bk.)