Browsing Mechanical and Mechatronics Engineering by Title
Now showing items 1463-1482 of 1493
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Vibration Control in Cable Robots Using a Multi-Axis Reaction System
(University of Waterloo, 2016-09-28)The primary motivation of this thesis is to develop a control strategy for eliminating persistent vibrations in all six spatial directions of the end effector of a planar cable-driven parallel robotic manipulator. By ... -
Virtual Model Building for Multi-Axis Machine Tools Using Field Data
(University of Waterloo, 2023-01-26)Accurate machine dynamic models are the foundation of many advanced machining technologies such as virtual process planning and machine condition monitoring. Viewing recent designs of modern high-performance machine tools, ... -
Virtual Model of Power Skiving Cutting Mechanics
(University of Waterloo, 2019-04-29)Power skiving is a high-speed gear cutting operation which involves feeding a rotating cutting tool into a synchronously rotating workpiece at an angled orientation, creating a continual chip removal cutting action. It is ... -
Viscoelastic-Viscoplastic Model to Predict Creep in a Random Chopped Mat Thermoplastic Composite
(University of Waterloo, 2008-12-19)Random glass-mat thermoplastic (GMT) composites are used in automotive applications due to their mechanical properties and low processing cost. However, there is an inherent issue in that the thermoplastic matrices exhibit ... -
Vision-based Driver State Monitoring Using Deep Learning
(University of Waterloo, 2022-01-20)Road accidents cause thousands of injuries and losses of lives every year, ranking among the top lifetime odds of death causes. More than 90% of the traffic accidents are caused by human errors [1], including sight ... -
Vision-based Self-Supervised Depth Perception and Motion Control for Mobile Robots
(University of Waterloo, 2022-07-18)The advances in robotics have enabled many different opportunities to deploy a mobile robot in various settings. However, many current mobile robots are equipped with a sensor suite with multiple types of sensors. This ... -
Visual-Inertial Odometry for 3D Pose Estimation and Scene Reconstruction using Unmanned Aerial Vehicles
(University of Waterloo, 2019-12-20)As Unmanned Aerial Vehicles (UAVs) become increasingly available, pose estimation remains critical for navigation. Pose estimation is also useful for scene reconstruction in certain surveillance applications, such as ... -
Visual-lidar Map Alignment for Change Detection in Infrastructure Applications
(University of Waterloo, 2023-11-22)Current human-based infrastructure inspections face several problems. Firstly, human inspectors face safety risks working in hazardous environments and reaching challenging areas in order to inspect an infrastructure asset ... -
Vital Energy Regulator: A Time-Independent Solution for Control of Lower Limb Exoskeletons
(IEEE, 2021-10)In this letter, we introduce a novel control strategy called Virtual Energy Regulator (VER) for lower limb rehabilitation exoskeletons. Unlike the conventional trajectory tracking controllers, VER, which is a time-independent ... -
Vortex break-down during the impact of a starting subsonic compressible gas jet on a multi-plume spray
(Springer, 2016-11-01)The impact process and the consequent two-phase interaction for a compressible subsonic starting gas jet colliding on a multi-plume spray are investigated using large eddy simulation with Eulerian/Lagrangian multiphase ... -
The Vortex Dynamics of Laminar Separation Bubbles
(University of Waterloo, 2021-01-15)Laminar separation bubbles (LSBs) are common features in low Reynolds number flows, and can have considerable performance impacts in applications such as hydrofoils, small-to-medium scale wind turbines, micro and unmanned ... -
Vortex Dynamics within the Laminar Separation Bubble over a NACA 0018 Airfoil at Low Reynolds Numbers
(University of Waterloo, 2015-11-02)The structures formed in the separated shear layer within a Laminar Separation Bubble (LSB) over a NACA 0018 airfoil at a chord Reynolds number of 100,000 and Angles of Attack (AOA) of (5°, 8°, and 10°) were investigated. ... -
Vortex-induced vibrations of a circular cylinder in elevated turbulence and unsteady freestream conditions
(University of Waterloo, 2024-04-26)This thesis presents the results of a series of experimental investigations focused on exploring one degree of freedom (1-DOF) vortex-induced vibrations (VIV) of a rigid, circular cylinder in two practical flow conditions: ... -
Vortex-induced vibrations of a pivoted circular cylinder and their control using a tuned-mass damper
(University of Waterloo, 2011-05-19)Vortex-induced vibrations of a pivoted circular cylinder and control of these vibrations were investigated experimentally. A novel experimental setup was employed to reproduce orbiting response observed in some engineering ... -
Vortices around Janus droplets under externally applied electrical field
(Springer, 2016-05)In this study, the Janus droplet is an oil droplet covered with aluminum oxide nanoparticles on one side of the droplet surface under applied DC electrical field. The vortices around Janus droplets fixed on a horizontal ... -
Warm Forming Behaviour of ZEK100 and AZ31B Magnesium Alloy Sheet
(University of Waterloo, 2014-05-21)The current research addresses the formability of two magnesium sheet alloys, a conventional AZ31B and a rare earth alloyed ZEK100. Both alloys had a nominal thickness of 1.6 mm. Both Limiting Dome Height (LDH) and Cylindrical ... -
Warm Forming of Aluminum Brazing Sheet. Experiments and Numerical Simulations
(University of Waterloo, 2010-05-25)Warm forming of aluminum alloys of has shown promising results for increasing the formability of aluminum alloy sheet. Warm forming is a term that is generally used to describe a sheet metal forming process, where part or ... -
Waste to Energy (WTE): Conventional and Plasma-assisted Gasification - Experimental and Modeling Studies
(University of Waterloo, 2013-04-26)Ever-increasing amounts of industrial and residential wastes and their environmental footprint dictates the need for effective Waste Management practices. Thermal waste processing technologies play an important role in ... -
WatkeRR - Robotic Research Platform and Machine Vision System: Design, Development and Construction
(University of Waterloo, 2018-09-25)Rollators/wheeled walkers are a commonly used mobility aid that is utilized by people with a wide array of mobility challenges such as Alzheimer ’s disease, stroke, multiple sclerosis, and general loss of stability and ... -
Wear and Boundary Lubrication in Modular Total Knee Replacements
(University of Waterloo, 2009-02-17)Wear of the polyethylene (PE) bearing surface and wear particle-induced osteolysis (bone resorption) can lead to failure of modular total knee replacements and make expensive revision surgery necessary. Gamma-in-air ...