A5013852996- Microstructure and mechanical properties
- Metallurgy and Material Forming
- Microstructure and Mechanical Properties of Steels
- Metal Forming Simulation Techniques
- Numerical methods in engineering
- Welding Techniques and Residual Stresses
- Advanced machining processes and optimization
- Non-Destructive Testing Techniques
- Advanced Surface Polishing Techniques
- Advanced materials and composites
- High Temperature Alloys and Creep
- Hydrogen embrittlement and corrosion behaviors in metals
- Topology Optimization in Engineering
- Composite Structure Analysis and Optimization
- High-Velocity Impact and Material Behavior
- Composite Material Mechanics
- Metal and Thin Film Mechanics
- Additive Manufacturing and 3D Printing Technologies
- Nonlocal and gradient elasticity in micro/nano structures
- Fatigue and fracture mechanics
- Ultrasonics and Acoustic Wave Propagation
- Force Microscopy Techniques and Applications
- Advanced ceramic materials synthesis
- Mechanical Engineering and Vibrations Research
- Fusion materials and technologies
University of Oxford
2022-2024
University of Bristol
2022-2023
Sabancı Üniversitesi
2016-2020
Ankara Yıldırım Beyazıt University
2018
Teknoloji Arastirma ve Gelistirme Endustriyel Urunler Bilisim Teknolojileri San Tic
2016
Cornell University
2013
Max-Planck-Institut für Nachhaltige Materialien
2008-2010
Max Planck Society
2008-2010
A coupled crystal plasticity phase field damage framework has been developed and applied to modelling initiation. novel implementation of a grain misorientation angle dependent critical energy release rate used determine reduction in the local resulting from effects intergranular carbide precipitates boundary misorientation. When notched high temperature 316H austenitic stainless steel specimen, good correlation between experimental results void nucleation statistics for was obtained. This...
Strain gradients have been cast in the form of geometrically-necessary dislocations (GND) to relate length-scale dependence strength and determine potential sites for failure initiation. The literature contains various different incompatibility measures, main ones being: total (∇×Fp), rate large displacements (∇×γ̇anaFp), slip gradient (∇γ̇a). Here these approaches are compared rigorously first time. Obtaining GND densities when using is a rank-deficit linear problem, solved by singular...
Electron beam welding is an autogenous process that leads to microstructural heterogeneities; crystallographic texture, elongated and larger grain size relative the surrounding parent material. The goal of this study predict changes in mechanical response weld fusion zone as a function morphology texture by using material properties avoid extensive costly experimental campaigns. For reason, crystal plasticity solver, "University BRIstol cryStal plasTicity sOLver" (BRISTOL), implemented...
Conventional crystal plasticity (CP) solvers are based on a Newton-Raphson (NR) approach which use an initial guess for the free variables (often stress) to be solved. These limited by finite interval of convergence and often fail when variable falls outside this interval. Solution failure results in reduction time increment solved, thus CP solver is bottleneck determines computational cost simulation. The numerical stability slip law its inverted form offers that isn't vulnerable poor...
Validating crystal plasticity models requires careful consideration of all aspects. The initial conditions are important when comparing a model and experiment, as the residual stresses within material can be significant but often overlooked due to experimental limitations. Therefore, their inclusion has potential improve predictions. This work explores efficacy using type-III elastic stresses, measured high resolution electron backscatter diffraction (HR-EBSD),as pre-test stress...