A5035644810- Microstructure and mechanical properties
- Fatigue and fracture mechanics
- High Temperature Alloys and Creep
- High-Velocity Impact and Material Behavior
- Metallurgy and Material Forming
- Microstructure and Mechanical Properties of Steels
- Metal Forming Simulation Techniques
- Aluminum Alloys Composites Properties
- Metal and Thin Film Mechanics
- Hydrogen embrittlement and corrosion behaviors in metals
- Aluminum Alloy Microstructure Properties
- Composite Material Mechanics
- Mechanical stress and fatigue analysis
- Cellular and Composite Structures
- Probabilistic and Robust Engineering Design
- Manufacturing Process and Optimization
- Titanium Alloys Microstructure and Properties
- Fusion materials and technologies
- Force Microscopy Techniques and Applications
- Nuclear Materials and Properties
- Nonlocal and gradient elasticity in micro/nano structures
- Machine Learning in Materials Science
- Numerical methods in engineering
- High-pressure geophysics and materials
- Thermal properties of materials
Georgia Institute of Technology
2015-2024
Canberra Hospital
2023
Woodruff Scientific (United States)
2018-2021
Woodruff Health Sciences Center
2008-2020
University of Florida
2019
Baylor University
2018
State Street (United States)
2016
State University of New York
1980-2016
Materials Design (France)
2016
University at Buffalo, State University of New York
2016
In-plane mechanical properties of periodic honeycomb structures with seven different cell types are investigated in this paper. Emphasis is placed on honeycombs relative density between 0.1 and 0.3, such that initial yield associated short column compression or bending, occurring prior to elastic buckling. Effective stiffness strength these metal under in-plane compression, shear, diagonal (for manifest anisotropy) reported as functions density. Comparison among demonstrates the diamond...
Abstract Additively manufactured (AM) metallic materials commonly possess substantial microscale internal stresses that manifest as intergranular and intragranular residual stresses. However, the impact of these on mechanical behaviour AM remains unexplored. Here we combine in situ synchrotron X-ray diffraction experiments computational modelling to quantify lattice strains different families grains with specific orientations associated an 316L stainless steel under uniaxial tension. We...
Abstract Atomistic simulations were employed to investigate the structure and energy of asymmetric tilt grain boundaries in Cu Al. In this work, we examine Σ5 Σ13 systems with a boundary plane rotated about ⟨ 100 ⟩ misorientation axis, Σ9 Σ11 110 axis. Asymmetric energies are calculated as function inclination angle compared an relationship based on faceting into two symmetric each system. We find that low index normals do not necessarily have lower than similar angles, contrary previous...
Abstract The objective of this research is to use atomistic simulations investigate the energy and structure symmetric asymmetric Σ3 ⟨110⟩ tilt grain boundaries. A nonlinear conjugate gradient algorithm was employed along with an embedded atom method potential for Cu Al generate equilibrium 0 K boundary structures. total 25 structures were explored identify various metastable Simulation results show that boundaries in system are composed only structural units two energies similar previous...
A two surface stress space model is introduced with internal state variable repositories for fading memory of maximum plastic strain range and non-proportionality loading. Evolution equations isotropic hardening variables are prescribed as a function these accumulated strain, reflect dislocation interactions that occur in real materials. The modulus made prior deformation the distance current point from limit surface. kinematic rules Mroz Prager used yield surfaces, respectively. structure...
ABSTRACT A computational study is conducted to determine the influence of microstructure attributes and properties on driving forces for fatigue crack formation microstructurally small growth in a polycrystalline Ni‐base superalloy, IN100, turbine disk alloy. principal objective obtain quantitative estimates effect variability features scatter life or strength given life. Understanding sought regarding sensitivity various that may guide selection process route tailor achieve resistance....
Abstract Symmetric and asymmetric tilt grain boundaries in Cu Al were generated using molecular statics energy minimization a classical dynamics code with in-plane boundary translations an atom deletion criterion. The following dataset (NIST repository, http://hdl.handle.net/11256/358 ) contains atomic coordinates for minimum three-dimensional periodic simulation cells, facilitating their use future simulations. This is used to show the relative transferability of structures from one...