Table of Contents

Preface xiii

Acknowledgements xv

1 Stress and Strain Analysis of Symmetric Composite Single Lap Joints Under Combined Tension and In-Plane Shear Loading 1
Jungmin Lee and Hyonny Kim

1.1 Introduction 2

1.2 Equations and Solution 3

1.3 Solution Verifi cation 13

1.4 Yield Criterion 18

1.5 Case Studies 19

1.6 Summary 21

References 22

2 Finite Element Modeling of Viscoelastic Behavior and Interface Damage in Adhesively Bonded Joints 23
Feifei Cheng, Ö. Özgü Özsoy and J.N. Reddy

2.1 Introduction 23

2.2 Finite Element Analysis of Viscoelastic Adhesively Bonded Joints 27

2.3 Damage Analysis of Viscoelastic Adhesively Bonded Joints 33

2.4 Summary and Conclusions 43

Acknowledgements 44

References 44

3 Modeling of Cylindrical Joints with a Functionally Graded Adhesive Interlayer 47
S. Kumar

3.1 Introduction 48

3.2 Axisymmetric Model 52

3.3 Constitutive Models of the Adherends and FMGB Adhesive 62

3.4 Variational Approach 62

3.5 Solution Procedure 68

3.6 Results and discussion 69

3.7 Summary 80

References 86

4 A Simplifi ed Stress Analysis of Bonded Joints Using Macro-Elements 93
E. Paroissien, F. Lachaud, and T. Jacobs

4.1 Introduction 94

4.2 Linear Elastic 1D-Bar and 1D-Beam Models 96

4.3 Assuming a Non-linear Adhesive Material 110

4.4 Validation 118

4.5 Comparison With Finite Element Predictions 125

4.6 Conclusion 136

Acknowledgment 136

References 145

5 Simulation of Bonded Joints Failure using Progressive Mixed-Mode Damage Models 147
M.F.S.F. de Moura and J.A.G. Chousal

5.1 Introduction 148

5.2 Cohesive Damage Model 149

5.3 Measurement of Cohesive Parameters 153

5.4 Continuum Damage Models 161

5.5 Conclusion 168

References 170

6 Testing of Dual Adhesive Ceramic-Metal Joints for Aerospace Applications 171
E.A.S. Marques, Lucas F.M. da Silva and C. Sato

6.1 Introduction 172

6.2 Experimental Details 173

6.3 Results 181

6.4 Conclusions 188

Acknowledgments 190

References 190

7 Modelling of Composite Sandwich T-Joints Under Tension and Bending 191
J.H. Tang, I. Sridhar, G.B. Chai and C.H. Ong

7.1 Introduction 192

7.2 Description of the Experiment 193

7.3 Description of the Finite Element Model 196

7.4 Description of the Peel Stress Model: Strength of Materials Approach 199

7.5 Results and Discussion 202

7.6 Concluding Remarks 211

Acknowledgement 212

References 217

8 Strength Prediction Methods for Adhesively Bonded Lap Joints between Composite–Composite/Metal Adherends 219
P.K. Sahoo, B. Dattaguru, C.M. Manjunatha and C.R.L. Murthy

8.1 Introduction 220

8.2 Strength Prediction Using Characteristic Distances in Problems with Singular Stresses 224

8.3 Strength Prediction in Aluminium-Aluminium Joints 225

8.4 Strength Prediction in CFRP-Aluminium and CFRP-CFRP Joints 229

8.5 Results and Discussion 232

8.6 Conclusions 234

Acknowledgments 235

References 235

9 Interface Failure Detection in Adhesively Bonded Composite Joints Using a Novel
Vibration-Based Approach 237
Ramadan A. Esmaeel and Farid Taheri

9.1 Introduction 238

9.2 Conventionally Used Non-destructive Techniques (NDTs) for Damage Detection 238

9.3 Motivation and Methodology 240

9.4 Experimental Procedure 243

9.5 Experimental Results 248

9.6 Finite Element Modeling Investigation 250

9.7 Summary and Conclusions 258

Acknowledgments 260

References 260

About the Author

S. Kumar is ?currently a faculty member at the ?Masdar Institute of Science and Technology, Abu Dhabi, UAE. He obtained his PhD in Solid Mechanics and Materials Engineering from the University of Oxford and an M. Phil from the University of Southampton. He has won?several awards including EPSRC Award at Oxford and a Rolls-Royce/DTI Fellowship at Southampton. He is a senior member of AIAA and is ?an active member of ASME and SAA UK.

Kashmiri Lal Mittal was associated with the IBM Corporation from 1972 through 1993. Currently, he is teaching and consulting worldwide in the broad areas of adhesion as well as surface cleaning. He has initiated, organized and chaired a large number of international symposia, and is the editor of more than 105 volumes dealing with adhesion measurement, adhesion of polymeric coatings, polymer surfaces, adhesive joints, adhesion promoters, thin films, polyimides, surface modification, surface cleaning, and surfactants.