UWSpace will be migrating to a new version of its software from July 29th to August 1st. UWSpace will be offline for all UW community members during this time.
Mechanical and Mechatronics Engineering: Recent submissions
Now showing items 461-480 of 1512
-
Atmospheric Dispersion of Radionuclides Following Small Modular Reactor Accidents
(University of Waterloo, 2019-05-23)Small modular reactors (SMRs), reactors having a power rating of 300 Megawatts (MW) or less, have been under development for several decades. As fewer larger reactors are built due to the high upfront capital investment, ... -
Interfacial bonding mechanism in Al/coated steel dissimilar refill friction stir spot welds
(Elsevier, 2019-06-01)Defect-free dissimilar Al/zinc coated steel and Al/AlSi coated steel welds were successfully fabricated by refill friction stir spot welding. However, Al alloy and uncoated steel could not be welded under the same weldin ... -
A novel membrane electrode assembly design for proton exchange membrane fuel cells: Characterization and performance evaluation
(Elsevier, 2019-03-10)Conventional membrane-electrode assembly (MEA), a key component in proton exchange membrane fuel cells, only operates reasonably within a narrow range of operating conditions. In this study, a scaled-up MEA that can perform ... -
Three-dimensional micromechanical assessment of bio-inspired composites with non-uniformly dispersed inclusions
(Elsevier, 2019-03-15)Bio-inspired composites with hexagonal platelet and cylindrical inclusions were studied. A novel algorithm termed staggered hardcore algorithm (SHCA) was used to rapidly generate 3D periodic representative volume elements ... -
Serious Game for Fire Evacuation
(University of Waterloo, 2019-05-21)Fire safety for buildings has been of increasing concern due to the increase in occupant density in modern-day infrastructures. Efforts have been made by civil engineers to reduce loss in building fire accidents. For ... -
Comprehensive Analytical Modeling of Laser Powder-Bed/Fed Additive Manufacturing Processes and an Associated Magnetic Focusing Module
(University of Waterloo, 2019-05-21)State-of-the-art metal additive manufacturing (AM), mainly laser powder-fed AM (LPF-AM) and laser powder-bed AM (LPB-AM), has been used to produce high-quality, complex-shaped, and end-user metallic parts. To achieve ... -
Adaptive and Optimal Motion Control of Multi-UAV Systems
(University of Waterloo, 2019-05-21)This thesis studies trajectory tracking and coordination control problems for single and multi unmanned aerial vehicle (UAV) systems. These control problems are addressed for both quadrotor and fixed-wing UAV cases. Despite ... -
Towards Intelligent Tire and Self-Powered Sensing Systems
(University of Waterloo, 2019-05-21)Tires are the interface between a vehicle and the ground providing forces and isolation to the vehicle. For vehicle safety, stability, maintenance, and performance, it is vital to estimate or measure tire forces, inflation ... -
Use of Sensors for Fire Detection and Monitoring
(University of Waterloo, 2019-05-17)The ultimate goal of placing fire detection systems in buildings and structures is to allow for the rapid detection of fire and accurate prediction of ensuing fire behavior. Through a-priori prediction of how a fire might ... -
Computational Fluid Dynamics (CFD) Applied to a Glass Vaporization Chamber for Introduction of Micro- or Nano-Size Samples into Lab-Based ICPs and to a CFD-Derived (and Rapidly Prototyped Via 3D Printing) Smaller-Size Chamber for Portable Microplasmas
(IntechOpen, 2018-02-14)Computational fluid dynamics (CFD) is used extensively in many industries ranging from aerospace engineering to automobile design. We applied CFDs to simulate flows inside vaporization chambers designed for micro- or ... -
Production and Characterization of Electrospun Metal Nanofibers for Applications in Nanoaerosol Filtration
(University of Waterloo, 2019-05-13)Airborne particles have a large impact on human health and the environment. They can be as small as a few nanometers. Electrospun nanofibrous materials have shown strong potential in filtering airborne nanoparticles for ... -
Controller Design for Active Vibration Damping with Inertial Actuators
(University of Waterloo, 2019-05-06)In the machining industry, there is a constant need to improve productivity while maintaining required dimensional tolerances and surface quality. The self-excited vibration called chatter is one of the main factors limiting ... -
Opto-Mechanical Analysis of a Harsh Environment MEMS Fabry-Perot Pressure Sensor
(University of Waterloo, 2019-04-30)The objective of this thesis is to develop an optically interrogated pressure sensor that is capable of measuring the applied fluid pressure in harsh environments. In its completed state, this sensor is intended be used ... -
Cycle Time Reduction of 5-axis Laser Drilling via Time-optimal Trajectory Generation and Sequence Optimization
(University of Waterloo, 2019-04-30)Cycle time reduction is one of the crucial tasks in manufacturing that needs to be achieved to maximize productivity and profits. Laser drilling processes, depending on the size and complexity of the parts, require few ... -
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 ... -
A Statistical Approach to Quantifying Impact of Multiple Pulse Resistance Spot Welding Schedules on Liquid Metal Embrittlement Cracking
(University of Waterloo, 2019-04-26)Advanced high strength steels (AHSS) are advantageous for automotive applications due to their excellent strength and ductility. However, when coated with zinc for corrosion protection, these steels are susceptible to ... -
Near-field Vortex Dynamics of Flows Emerging from a Rectangular Duct
(University of Waterloo, 2019-04-26)Shear layers and jets have motivated many researches to use experimental, theoretical and numerical methods for the better understanding of the fundamental physics and optimizing the flow characteristics that best suit ... -
Design, fabrication and characterization of ferroelectret energy harvester
(University of Waterloo, 2019-04-22)Energy harvesters gained significant interest over the last decade with the reduce in power requirements of today’s electrical devices and with the fast developments in low-power electronics. Limited battery life is one ... -
Wetting of underliquid systems
(University of Waterloo, 2019-04-18)Wetting studies can be tracked back over the last few decades due to its applications in the development of water repellent (superhydrophobic), oil repellent (superoleophobic) surfaces. Despite the fact that these surfaces ... -
Computational Aeroacoustic Prediction of Airfoil Self-Noise at Static Angles of Attack
(University of Waterloo, 2019-04-17)Aeroacoustic noise from wind turbines is often an obstacle in the implementation of wind farms. Reduction of this noise is key to allowing the expansion of the wind energy sector which is crucial for decreasing the dependence ...