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Mechanical and Mechatronics Engineering: Recent submissions
Now showing items 481-500 of 1512
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LIDAR Odometry with Joint Geometric and Appearance Landmarks
(University of Waterloo, 2019-04-08)Odometry is the problem of estimating the motion of a moving platform relative to its environment without measurements to a fixed reference point. This is a critical problem for mobile robotics applications where ... -
Multiphysics Modeling of a Microchannel Methanol Steam Reformer for High Temperature Polymer Electrolyte Membrane Fuel Cell Systems
(University of Waterloo, 2019-03-13)One of the main challenges facing power generation by fuel cells is the difficulties of hydrogen fuel storage. Several methods have been suggested and studied by researchers to overcome this problem. Among these methods, ... -
Epoxy Adhesives, Correlation between Strain Whitening and Damage Using a Macroscopic Optical Method
(University of Waterloo, 2019-03-12)The success of lightweight automotive multi-material assemblies depends on selecting appropriate joining techniques that can provide the expected day-to-day operational strength while delivering occupant protection during ... -
Evaporation of Thin Lubricant Films under Laminar and Turbulent Boundary Layers
(University of Waterloo, 2019-02-07)The evaporation of engine oil hydrocarbons from the cylinder liner of internal combustion engines is a significant contributor to engine emissions. This evaporation occurs from the thin films deposited by the piston ... -
Modelling Microstructure-Property Relationships in Polycrystalline Metals using New Fast Fourier Transform-Based Crystal Plasticity Frameworks
(University of Waterloo, 2019-02-04)The present thesis develops several new full-field, fast Fourier transform (FFT)-based crystal plasticity modelling tools for microstructure engineering. These tools are used to explore elasto-viscoplastic deformation, ... -
Supercritical thermodynamic property evaluation via adaptive mesh tabulation
(University of Waterloo, 2019-01-30)Obtaining accurate computational simulations of fluid flows with a complex thermodynamic behaviour is difficult. This is partly due to the non-linear variation of thermophysical properties in the vicinity of critical point. ... -
Axial Crush Performance of Hot Stamped Tailor Welded Blanks - Experiments and Numerical Simulations
(University of Waterloo, 2019-01-30)This thesis investigates the axial crush performance of hot stamped tailor-welded blanks (TWBs) and their potential for weight reduction in the front crush structure of a vehicle. A baseline demonstrator structure, fabricated ... -
Performance characterization of shielded metal arc welding power supply designs
(University of Waterloo, 2019-01-28)Engine driven welding power supplies are widely used for Shielded metal arc welding process in field applications such as pipeline industry, where there is a lack of electricity grid. Being a manual process, the welder’s ... -
Prediction of Bead geometry in Gas Metal Arc Welding by Statistical Regression Analysis
(University of Waterloo, 2019-01-25)Manufactures in fabrication industry have long depended on Gas Metal Arc welding as one of the most reliable and economical techniques for joining parts. The need for reducing costs and addressing a skills shortage on the ... -
On the Influence of the Through-Thickness Strain Gradients for Characterization of Formability and Fracture of Sheet Metal Alloys
(University of Waterloo, 2019-01-25)The main focus of this thesis is to investigate the effect of through-thickness strain gradient on sheet metal formability. Current technology for formability analysis has relied upon deformation modes of in-plane stretching ... -
Study of a low Re airfoil considering laminar separation bubbles in static and pitching motion
(University of Waterloo, 2019-01-25)Performance of low Reynolds number (Re) devices is highly dependent on their airfoil design. Small wind turbines that usually work in areas with poor wind resources with a vast application from remote to busy urban regions ... -
Developing a Thermometallurgical Model and Furnace Optimization for Austenitization of Al-Si Coated 22MnB5 Steel in a Roller Hearth Furnace
(University of Waterloo, 2019-01-25)Lightweighting of vehicles while preserving crash-worthiness, in order to satisfy stringent restrictions imposed by the government on the automotive industry, has become a sought after solution which can be realized via ... -
Catalyst Layers in Polymer Electrolyte Membrane Fuel Cells: Formation, Characterization and Performance
(University of Waterloo, 2019-01-25)The structure of the catalyst layers (CLs) has a decisive impact on the performance, durability, and cost of polymer electrolyte membrane (PEM) fuel cells – these are the main technical challenges to the commercialization ... -
Investigation on Reaction Mechanisms of Nano-energetic Materials and Application in Joining
(University of Waterloo, 2019-01-23)Nano-energetic materials, also known as metastable intermetallic composites (MICs), have shown promise in applications such as propellants, pyrotechnics, and explosives. The work in this thesis pursues a deep understanding ... -
Powertrain Selection and Integration of a Single Shaft Pre and Post-Transmission Series-Parallel Plug-in Hybrid Electric Vehicle Camaro
(University of Waterloo, 2019-01-23)The ever-growing concern for the environment as well as stricter emissions has fueled the drive for the automotive industry to sway away from the conventional fossil-fueled vehicle. As the pursuit of using alternative ... -
Multi-objective Mapping and Path Planning using Visual SLAM and Object Detection
(University of Waterloo, 2019-01-23)Path planning of the autonomous robots is one of the crucial tasks that need to be achieved for mobile robots to navigate through the environment intelligently. The robot paths are typically planned utilizing map that ... -
Simulations for three-dimensional landmine detonation using the SPH method
(Elsevier, 2019-04)The simulation of the soil fragmentation under buried explosive detonation is an extremely difficult task. In this paper, the modified smoothed particle hydrodynamics method (SPH) in combination with the elastoplastic and ... -
Study on fatigue life of bend-twist coupling wind turbine blade based on anisotropic beam model and stress-based fatigue analysis method
(Elsevier, 2019-01-15)Bend-twist coupling (BTC), also called aeroelastic tailoring or passive pitch control method, is often utilized to reduce the fatigue loading on wind turbine blades. With BTC, the blade can twist as it bends, this alleviates ... -
ACL Strain During Single-Leg Jump Landing: An Experimental and Computational Investigation
(University of Waterloo, 2019-01-11)The anterior cruciate ligament (ACL) is a commonly-injured ligament in the human knee joint. ACL injury repair is a costly procedure; however, left unrepaired, ACL injuries can lead to complications later in life. In ... -
Mesoscale modeling and direct simulation of explosively dispersed granular materials
(University of Waterloo, 2019-01-09)Explosively dispersed granular materials frequently exhibit macroscale coherent particle clustering and jetting structures. The underlying mechanism is of significant interest to study instability and mixing in high-speed ...