Browsing Mechanical and Mechatronics Engineering by Title
Now showing items 831-850 of 1494
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Investigation of Mixing Models and Finite Volume Conditional Moment Closure Applied to Autoignition of Hydrogen Jets
(University of Waterloo, 2012-03-09)In the present work, the processes of steady combustion and autoignition of hydrogen are investigated using the Conditional Moment Closure (CMC) model with a Reynolds Averaged Navier-Stokes (RANS) Computational Fluid ... -
Investigation of Plating Process Variability and Mechanism for Oxide Disruption in a Ni-Modified Fluxless Brazing Process for Aluminum Alloys
(University of Waterloo, 2015-01-15)The effect of surface oxides and the presence of ternary constituents were examined using differential scanning calorimetry (DSC) along with SEM, EDX, and TEM studies to quantitatively analyze the role of nickel in its use ... -
Investigation of Primary Blast Injury and Protection using Sagittal and Transverse Finite Element Head Models
(University of Waterloo, 2015-01-14)The prevalence of blast related mild traumatic brain injury (mTBI) in recent military conflicts, attributed in part to an increased exposure to improvised explosive devices (IEDs), requires further understanding to develop ... -
Investigation of Resistance Spot Weld Failure in Tailored Hot Stamped Assemblies
(University of Waterloo, 2018-01-23)This thesis presents the results from the mechanical characterization of resistance spot welds within hot stamped USIBOR® 1500-AS steel sheet (1.2 and 1.6 mm thickness) with tailored properties. Three parent metal conditions, ... -
Investigation of the Interaction of Particulate Matter with the Gas Diffusion Layer
(University of Waterloo, 2017-06-14)Rapid global industrialization has resulted in an unprecedented level of energy consumption. Transportation comprises a significant portion of the demand for energy, and special attention has recently been paid to green ... -
Investigation of the scalar variance and scalar dissipation rate in URANS and LES
(University of Waterloo, 2011-02-22)Large-eddy simulation (LES) and unsteady Reynolds-averaged Navier-Stokes (URANS) calculations have been performed to investigate the effects of different mathematical models for scalar variance and its dissipation rate as ... -
An Investigation of the Soldering and Brazing Behaviour of Mg-Mg Joints using Sn, Zn and Mg containing Filler Metals
(University of Waterloo, 2012-05-10)In order to evaluate the feasibility of forming Pure Mg – Pure Mg and Mg Alloy – Mg Alloy joints using soldering and brazing, four filler metals (Sn, Sn-9Zn, Sn-9Zn+X wt%Mg and Mg:Zn:X(Sn-9Zn)) were used at peak heating ... -
Investigation of the use of Dynamic Resistance in Adaptive Welding and Statistical Relation to Quality
(University of Waterloo, 2019-09-19)The pursuit of real time quality detection of a resistance spot weld (RSW) in the automotive industry has progressed alongside technology. With the capability of modern controllers to collect real-time data from the welding ... -
Investigation of Thorax Response and Potential for Injury in Side Impacts Using Integrated Detailed Human and Vehicle Finite-Element Models
(University of Waterloo, 2018-08-14)Car accidents are amongst the most common causes of fatalities for a younger population in developed countries and world-wide. While research using Anthropometric Test Devices (ATDs) has led to improvements in frontal ... -
Investigation of Transient Gas Dynamics from Laser-Energized Nanoparticles
(University of Waterloo, 2013-08-21)Soot is formed whenever the combustion of hydrocarbon fuels is incomplete. Since soot particles are very small, they can be inhaled and cause severe health problems, such as pulmonary diseases. They can also cause environmental ... -
Investigation of Turbulent Spray Flames Using the Conditional Source-term Estimation (CSE) Approach
(University of Waterloo, 2022-05-16)Conditional Source-term Estimation (CSE) is a turbulent combustion model for gaseous combustion. This work aims at extending the CSE formulation to address turbulent spray combustion. The Eulerian-Lagrangian method is ... -
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 ... -
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 ... -
Investigation on the Effects of Fastening Parameters on the Handle Displacement of a Pistol Grip Tool
(University of Waterloo, 2023-01-23)Workers in automotive assembly lines routinely use DC-powered pistol grip tools to install threaded fasteners. While these tools are easy to use and increase production quality, tool operators are subjected to impulsive ... -
Investigation on the implications of passive fire barriers on the fire fighting tactics of the Royal Canadian Navy
(University of Waterloo, 2022-03-28)The Royal Canadian Navy (RCN) is currently in the process of recapitalizing the fleet under the National Shipbuilding Strategy (NSS). This will result in a modern fleet that includes new marine safety requirements that did ... -
Investing Flow over an Airfoil at Low Reynolds Numbers Using Novel Time-Resolved Surface Pressure Measurements
(University of Waterloo, 2011-04-12)An aluminum NACA 0018 airfoil testbed was constructed with 95 static pressure taps and 25 embedded microphones to enable novel time-resolved measurements of surface pressure. The main objective of this investigation is to ... -
Joining of Silver Nanoparticles: Computer Simulations and Experimental Observations
(University of Waterloo, 2016-02-18)Abstract This dissertation introduced a new type of high aspect ratio silver nanoparticle, synthesized by assembly and joining of hexagonal and triangular nanoplates. The synthesis procedure is a simple mixing at room ... -
Kinematic and three-dimensional dynamic modeling of a biped robot
(Sage, 2017-03-01)This article focuses on inverse kinematic formulation and dynamic modeling of the Nao biped robot's lower body, accompanied by verification with the joints' angles as experimental data. Dynamic modeling in two different ... -
Kinematics-Based Recovery Metrics and Inertial Measurement Units to Monitor Recovery Post-Knee Arthroscopic Surgery: A Case Study
(University of Waterloo, 2023-01-05)Physiotherapy after lower-limb injury or surgery is essential for recovery of range of motion, functional movement, strength, and return to sport. Clinicians assess patients, prescribe rehabilitation exercises, and monitor ... -
Kinetics of Carbide Precipitation during Laser Beam Welding of Dual-Phase and Martensitic Steels
(University of Waterloo, 2016-09-14)In order to ensure a high passenger safety and reduce greenhouse gas emissions, dual-phase (DP) and martensitic steels (MS) are increasingly being used in the automotive industries. However, the main issue in the welding ...