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Mechanical and Mechatronics Engineering: Recent submissions
Now showing items 361-380 of 1512
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Tool eccentricity in thick-plate aluminum alloy friction stir welds
(University of Waterloo, 2020-05-13)Tool eccentricity, i.e. the wobbling motion of a milling tool during rapid rotation caused by its slight offset from the spindle rotational axis, has been given very limited attention in the 20 years of friction stir welding ... -
Dynamic Stall on Pitching Cambered Airfoil with Phase Offset Trailing Edge Flap
(American Institute of Aeronautics and Astronautics (AIAA), 2020-04-20)Dynamic stall on wind turbine blades often leads to severe fatigue that tends to decrease the lifespan of the blades. To mitigate cyclic loading on the blades, trailing edge flaps (TEF) may be used to control the energy ... -
Enhancing Focused Ultrasound Therapy Using Nanoscale Agents
(University of Waterloo, 2020-05-05)Focused ultrasound therapy, also known as high intensity focused ultrasound (HIFU), is a new energy-based method that uses ultrasonic energy to treat a range of health disorders and tumors. Despite the great potential for ... -
Simulation of In-Flight Rime Icing Using a Non-Body-Fitted Mesh
(University of Waterloo, 2020-05-01)In-flight rime icing occurs when supercooled droplets strike the surface of an aircraft and instantly freeze. This often occurs in the high moisture, cold environments of clouds and is of major concern to aircraft manufacturers ... -
Development of Ultrasonic Devices for Non-destructive Testing: Ultrasonic Vibro-tactile Sensor and FPGA-Based Research Platform
(University of Waterloo, 2020-04-29)This thesis is focused on the development of ultrasonic devices for industrial non-destructive testing (NDT). Ultrasound is generated from mechanical vibrations and then propagates through the medium. Ultrasonic devices ... -
Investigation of Liquid Metal Embrittlement in Advanced High Strength Steels
(University of Waterloo, 2020-04-17)Third-generation advanced high strength steels (AHSS) are typically given a zinc coating that provides excellent resistance to corrosion. During the resistance spot welding (RSW) process, the melted zinc coating enables ... -
Active Aerodynamic Modification of Wind Turbine Blades to Reduce Load Fluctuation
(University of Waterloo, 2020-04-16)Wind turbines operate predominantly in relatively unsteady flow conditions and are typically misaligned with the incoming wind. Moreover, as wind turbines increase in size, the loading on the blades becomes more problematic ... -
Investigation of Whiplash Associated Disorders using Finite Element Neck Models with Active Musculature in Frontal, Rear and Lateral Impact
(University of Waterloo, 2020-03-19)Whiplash associated disorders (WAD) represent one of the most frequent injuries following a motor vehicle collision, with a significant economic cost of $29 billion in the United States and €10 billion in Europe. Although ... -
Determination Of Thermal Properties Of Mineral Wool Insulation Materials For Use In Full-Scale Fire Modelling
(University of Waterloo, 2020-03-19)Temperature-dependent materials properties are required for use in many contexts in fire safety engineering. While property values for many materials do exist, we often are limited in our understanding of how representative ... -
Improving Passive Magnetic Inspection for Reinforced Concrete Condition Assessment
(University of Waterloo, 2020-03-06)Life quality, industrial productivity, and community safety can be assured by the reliability and the safety of infrastructure such as highways, bridges, and energy-supply systems. Reinforced concrete is the most-commonly ... -
Developing a droplet microfluidic platform for making double emulsions towards manufacturing polymersomes
(University of Waterloo, 2020-02-24)In recent years, there has been growing interest in the use of double emulsions in various industries such as pharmaceutical, foods, and cosmetics. Polymersomes are one of the promising applications of double emulsions ... -
Implementation of Coupled Thermo-Mechanical Topology Optimization Methods for Effective Additive Manufacturing of a Gas Turbine Component
(University of Waterloo, 2020-02-18)Additive manufacturing (AM) is a relatively new technology that is making its way into different industries at a fast pace. In order to take full advantage of flexibility and freedom that this technology provides, a proper ... -
The effect of cold spray coating parameters on the residual stress and fatigue performance of magnesium alloys
(University of Waterloo, 2020-02-14)Global warming, dwindling fossil fuels, and the low efficiency of alternative energy sources such as batteries and solar panels compared to traditional carbon-based energy sources, have shifted the industrial design paradigm ... -
Wire bonding on glass substrates via vapour deposition of Ag-Ti film
(Elsevier, 2019-08)Circuits on glass technology have recently developed in applications such as interposers, fibre optics, and displays. We report an automatable method towards interconnecting to glass circuits via wire bonding with maintained ... -
Determination of the fracture strength of brittle material thin films at high temperature using MEMS
(University of Waterloo, 2020-01-27)Brittle materials are widely used as structural materials in microelectromechanical systems (MEMS). Their mechanical properties make them suitable for high-temperature environments where MEMS are exposed to different types ... -
Thermal Comfort Analysis Inside of a Recreational Vehicle
(University of Waterloo, 2020-01-27)The focus of the current study is on the numerical investigation of airflow and temperature distribution in a representative Class B Recreational Vehicle (RV) with the objective of optimizing the inlet and exhaust vent ... -
Characterization and Modeling of Forged ZK60 Mg Alloys under Quasi-static and Fatigue Loadings
(University of Waterloo, 2020-01-24)In response to impending changes to the environmental regulations on the vehicles’ gas consumption rate, the transportation sector is motivated toward the widespread adoption of lightweight materials in the manufacturing ... -
Numerical Prediction of Jet Noise Using Compressible Lattice Boltzmann Method
(University of Waterloo, 2020-01-23)Computational fluid dynamics (CFD) encompasses a variety of numerical methods. Some depend on macroscopic model representatives, which are solved by finite volume, finite element or finite difference method, while others ... -
Prediction of Forces and Moments in Multiphase Naval Simulations
(University of Waterloo, 2020-01-23)This thesis investigates the prediction of forces and moments in the static and dynamic planar motion mechanism (PMM) simulations of ship manoeuvring problems using the open-source Computational Fluid Dynamics (CFD) software ... -
Computational Modelling of Knee Tissue Mechanics During Single-Leg Jump Landing
(University of Waterloo, 2020-01-23)The anterior cruciate ligament (ACL) plays a crucial role in stabilising the knee joint in anterior tibial translation and internal tibial rotation. Non-contact ACL injuries are a major concern in sport-related activities ...