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- 3D-XRD (1)
- Atmospheric icing (1)
- CPFE (1)
- HR-EBSD (1)
- Joint wind and ice hazard (1)
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- Neutron irradiation (1)
- Probability Distributions (1)
- Reliability based design (1)
- Residual stress (1)
- Small scale plasticity; Nanoindentation; Crystallographic orientation; pre-existing faults; Grain boundaries; Dislocation nucleation; Taylor hardening; Dislocation starvation; Dislocation exhaustion; Molecular dynamics simulation (1)
- Structural dynamics (1)
- Vertical galloping (1)
- Zr-2.5Nb (1)
Articles 1 - 3 of 3
Full-Text Articles in Engineering Science and Materials
Joint Wind And Ice Effects On Transmission Lines In Mountainous Terrain, Daniel Davalos Arriaga
Joint Wind And Ice Effects On Transmission Lines In Mountainous Terrain, Daniel Davalos Arriaga
Electronic Thesis and Dissertation Repository
Atmospheric icing on mountainous terrain can produce catastrophic damages to transmission lines when incoming particles impinge and accrete on the cable surface of the system. The first challenge in wind-ice loading is determining joint statistics of wind and ice accretion on transmission lines. This study analyzes the weather characteristics for a specific site of study using 15 years of historical data to use as inputs for ice accretion modeling. The joint wind and ice hazard is characterized by simulating 500 years of icing events from the fitted probability distributions of ice accretion and wind on ice velocities. The second challenge …
Measurement And Modeling Of Micro Residual Stresses In Pure Zirconium And Zr-2.5nb Polycrystals, Abdulla Alawadi
Measurement And Modeling Of Micro Residual Stresses In Pure Zirconium And Zr-2.5nb Polycrystals, Abdulla Alawadi
Electronic Thesis and Dissertation Repository
In CANada Deterium Uranium (CANDU) nuclear reactors, Zr-2.5Nb alloy pressure tubes separate the hot water and cold moderator. Pressure tubes are susceptible to the diffusion of hydrogen from water and formation of a brittle phase called zirconium hydrides. The diffusion and formation of hydrides are affected by the state of stresses within the tubes. As such, it is of great significance to understand the source of the stresses that develop within the tubes. This thesis focuses on the characterization of the micro and nano scale residual stresses that develop in pure zirconium and Zr-2.5Nb polycrystals. With using three-dimensional synchrotron X-ray …
Incipient Deformation Of Small Volumes Of Fcc Metals, Mahdi Bagheripoor
Incipient Deformation Of Small Volumes Of Fcc Metals, Mahdi Bagheripoor
Electronic Thesis and Dissertation Repository
In the area of mechanics of materials, the classic theories cannot describe the material behaviour as the volume of deformation or sample size is small enough to be compared with the size scales of the imperfections of the crystal. So, there has been a great deal of interest in investigating the plasticity of micron and nano-sized materials, in the last 20 years. As a Ph.D. research project, the deformation mechanism at small scales of fcc metals is studied based on dislocations behaviour. The effect of main parameters that haven’t been studied in detail, including, crystal orientation, pre-existing faults, grain boundaries, …