声明
CHAPTER 1 INTRODUCTION AND LITERATURE REVIEW
1.1 Introduction
1.2 Literature Review
1.3 Literature Summary
1.4 Research Objectives
1.5 Dissertation Outline
CHAPTER 2 EXPERIMENTAL MATERIAL AND METHODS
2.1 Properties of Aluminum alloys (AA)
2.2 Material Preparation
2.3 Laser Shock Peening (LSP)
2.4 Microhardness and specimen preparation
2.5 Surface roughness and topography
2.6 X-ray diffraction analysis
2.7 Residual measurement
2.8 Transmission electron microscope (TEM)
2.9 Fatigue Test
2.10 Tensile test
2.11 LSP and simulation
2.12 Modelling pressure loading and plastic deformation due to shockwaves
2.13 Thin and thick geometry
2.14 Material simulation model
2.15 LSP and its processing parameters on AA2024-T351 aluminum alloy
CHAPTER 3 THE EFFECTS OF SCANNING PATH GRADIENT ON THE COMPRESSIVE RESIDUAL STRESS DISTRIBUTION AND FATIGUE LIFE BY LSP
3.1 Introduction
3.2 FE simulation and compressive residual stress distribution
3.3 Results and discussion
3.4 Residual stress distribution comparative to experimental and simulated results
3.5 Fatigue life improvement
3.6 Fatigue fracture
3.7 SUMMARY
CHAPTER 4 THE EFFECTS OF LASER ENERGY ON FATIGUE BEHAVIOR INDUCED BY LASER SHOCK PEENED \(LSP\) ON AA2024-T351 ALUMINUM ALLOY
4.1 Introduction
4.2 Experimental details
4.3 Results and discussion
4.4 Fatigue fracture analysis
4.5 Fatigue crack behavior and microstructure on the fractured surfaces
4.6 Fatigue life
4.7 SUMMARY
CHAPTER 5 THE EFFECTS OF MULTIPLE PEENING ON FATIGUE LIFE AND SURFACE INTEGRITY ON AA2024-T351 ALUMINUM ALLOY WITH LSP
5.1 Introduction
5.2 Experimental materials and methods
5.3 Results and discussion
5.4 Effects of multiple LSP impacts on mechanical properties
5.5 Fatigue life and fracture surfaces
5.6 SUMMARY
CHAPTER 6 CONCLUSIONS AND RECOMMENDATION
6.1 CONCLUSIONS
6.2 NOVELTY CONTRIBUTION
6.3 FUTURE RESEARCH WORK
参考文献
致谢
PUBLICATIONS
