Composite Repair: Theory and Design
Regular price
92.500 KD
inc. VAT
Couldn't load pickup availability
Table of contents
- Contentsv
- Prefacexi
- Acknowledgementsxiii
- Disclaimerxiv
- Chapter 1. Introduction1
- 1.1 Objectives of Bonded Repairs and an Overview of the Repair Process1
- 1.2 Objectives of This Book8
- 1.3 Review of Past and Current Work on Design and Analysis of Bonded Repair8
- 1.4 Basic Elements of Fracture Mechanics Theory10
- Chapter 2. Theory of Bonded Doublers and Bonded Joints16
- 2.1 Introduction16
- 2.2 Stress Analysis of Two-Sided Doublers and Double-Strap Joints17
- 2.3 Stress Analysis of One-Sided Bonded Double and Single-Strap Joints31
- 2.4 Consideration of Other Important Effects in Bonded Doublers and Joints50
- 2.5 Failure Criteria for Bonded Doublers and Joints65
- 2.6 Summary68
- Chapter 3. Fundamental Concept of Crack Patching69
- 3.1 Introduction69
- 3.2 Formulation and Notation71
- 3.3 Symmetric or Fully Supported One-Sided Repairs73
- 3.4 One-Sided Repairs87
- 3.5 Thermal Stresses92
- 3.6 Summary94
- Chapter 4. Mathematical Theory of Supported One-Sided Crack Patching or Two-Sided Crack Patching95
- 4.1 Introduction95
- 4.2 Stage I: Load Attraction95
- 4.3 Stage II: Fracture Analysis115
- 4.4 Numerical Illustrations131
- 4.5 Thermal Constraints138
- 4.6 Summary145
- Chapter 5. Approximate Theory of Unsupported One-Sided Crack Patching146
- 5.1 Introduction146
- 5.2 Stage I: Geometrically Linear Analysis147
- 5.3 Geometrically Nonlinear Analysis of Stage I159
- 5.4 Stage II: Fracture Analysis Using Crack-bridging Model189
- 5.5 Thermal Residual Stresses Resulting from Bonding209
- 5.6 Characterization of Fatigue Crack Growth in One-Sided Patching214
- 5.7 Summary214
- Chapter 6. Analytical Approach to Repairs of Corrosion Grind-Outs216
- 6.1 Introduction216
- 6.2 Fundamental Concepts216
- 6.3 General Solution of Polygon-Shaped Patches229
- 6.4 Summary247
- Chapter 7. Bond-line Analysis at Patch Ends248
- 7.1 Introduction248
- 7.2 One-Dimensional Analysis of Tapered Patches and Doublers248
- 7.3 One-Dimensional Analysis of Tapered Patches and Doublers Including Effects of Thermal Mismatch a270
- 7.4 Approximate Method for Adhesive Stresses at Patch End in a One-Sided Repair277
- 7.5 Approximate Method for Adhesive Stresses at Patch End in a Two-Sided Repair278
- 7.6 Summary279
- Chapter 8. Fatigue Crack Growth Analysis of Repaired Structures280
- 8.1 Introduction280
- 8.2 Crack-Closure Analysis of Repaired Cracks281
- 8.3 Overload Effect and Validation Using Finite Element Method289
- 8.4 Comparison with Experimental Results292
- 8.5 Summary299
- Chapter 9. A Preliminary Design Approach for Crack Patching300
- 9.1 Introduction300
- 9.2 Basic Analysis Methods Used in the Preliminary Design Approach301
- 9.3 Design Criteria310
- 9.4 Material Selection314
- 9.5 Preliminary Design Procedure320
- 9.6 An Illustrative Example Using Design Process332
- 9.7 Summary335
- Chapter 10. A Preliminary Design Approach for Corrosion Repairs336
- 10.1 Introduction336
- 10.2 Basic Analysis Methods Used in the Preliminary Design Approach337
- 10.3 Design Criteria345
- 10.4 Preliminary Design Procedure346
- 10.5 Summary348
- Chapter 11. Experimental Verifications of Analytical Methods349
- 11.1 Introduction349
- 11.2 Fatigue Crack Growth Tests and Method Validation350
- 11.3 Load Attraction Tests and Method Validation374
- 11.4 Summary377
- Chapter 12. Repair of Sonic Fatigue382
- 12.1 Introduction382
- 12.2 Structural Response to Acoustic Loading386
- 12.3 Analysis of Damped Repairs387
- 12.4 Fatigue Crack Growth Analysis393
- 12.5 Optimization of Damped Repairs395
- 12.6 An Illustrative Example395
- Chapter 13. Repair Analysis Methods Accounting for Secondary Effects402
- 13.1 Effect of Tapering on Load Attraction of Bonded Patches402
- 13.2 Effect of Patches in Proximity on Load Attraction406
- 13.3 Effect of Adherend Shear Deformation on Repair Efficiency412
- Chapter 14. Concluding Remarks419
- Appendix: Introduction to CRAS Software421
- References442
- Index456
Bonded composite repairs are efficient and cost effective means of repairing cracks and corrosion grind-out cavity in metallic structures, and composite structures sustained impact and ballistic damages, especially in aircraft structures. This book grew out of the recent research conducted at the Boeing Company and the Defence Science and Technology Organisation (DSTO, Australia) over the past ten years. Consequently it is predominately a compilation of the work by the authors and their colleagues at these two organizations on the design and analysis of composite repairs. Composite Repair is entirely devoted to the design and analysis of bonded repairs, focusing on the mathematical techniques and analysis approaches that are critical to the successful implementation of bonded repairs. The topics addressed are presentated in a sufficiently self-explanatory manner, and serve as a state-of-the-art reference guide to engineers, scientists, researchers and practitioners interested in the underpinning design methodology and the modelling of composite repairs.
* The only book devoted entirely to the design and analysis of bonded repairs
* Focusing on mathematical techniques and analytical methodologies that are critical to the successful implementation of bonded repair
* A companion reference book to the United Stated Air Force (USAF) bonded repair guidelines (Guidelines for Composite Repair of Metallic Structures-CRMS, AFRL-WP-TR-1998-4113) and the Royal Australian Air Force (RAAF) Design Standard DEF(AUST)995
* Covering a variety of topics and effects: repairs of fatigue and sonic fatigue cracks, and corrosion grind-out cavity, and effects of secondary bending, octagon-shaped patches, thermal residual stresses, patches in proximity, patch tapering edge, etc.
* The only book devoted entirely to the design and analysis of bonded repairs
* Focusing on mathematical techniques and analytical methodologies that are critical to the successful implementation of bonded repair
* A companion reference book to the United Stated Air Force (USAF) bonded repair guidelines (Guidelines for Composite Repair of Metallic Structures-CRMS, AFRL-WP-TR-1998-4113) and the Royal Australian Air Force (RAAF) Design Standard DEF(AUST)995
* Covering a variety of topics and effects: repairs of fatigue and sonic fatigue cracks, and corrosion grind-out cavity, and effects of secondary bending, octagon-shaped patches, thermal residual stresses, patches in proximity, patch tapering edge, etc.