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Chapter 1
1.3 Thesis outline
This thesis has been divided into nine chapters. Chapter 2 focuses on the review of literature on size effect in micro-cutting using experimental, analytical and numerical methods. Chapter 3 presents numerical model using FEA and SPH formulations within LS-DYNA framework. Chapter 4 gives the details of experimentation on micro-cutting and validation of FEA and SPH simulation under various parametric conditions. Chapter 5 contains the analysis of microcrack formation and its contribution to the size effect. Chapter 6 discusses fracture energy in terms of specific work of fracture (R) and its contribution to the size effect under different cutting conditions. Additionally, a fracture energy in micro-cutting is also evaluated using J-integral approach in Chapter 7. Chapter 8 presents effect of workpiece microstructure on shear angle, cutting forces and VM stresses in the shear zone during micro-cutting followed by contribution to the size effect. The main conclusions drawn from the overall studies on the size effect in micro-cutting and recommendations for the future work are highlighted in Chapter 9.
