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Mechanical and Mechatronics Engineering: Recent submissions
Now showing items 101-120 of 1512
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New Platform Designs for Enabling Atomic Interactions in Solid and Gaseous States
(University of Waterloo, 2023-05-17)This dissertation is composed of two projects that explored two new platforms for measuring atomic interactions using simpler designs than in the literature. The first project of this dissertation designed a platform that ... -
The Influence of Electrode Force on Liquid Metal Embrittlement of Third Generation Advanced High Strength Steels during Resistance Spot Welding
(University of Waterloo, 2023-05-08)Zinc coatings are generally applied on the surface of advanced high-strength steels (AHSS) for corrosion resistance. However, the elevated temperature during resistance spot welding process melts zinc coating and the intact ... -
Direct Laser Writing of Metal and Metal Oxide Patterns for Flexible and Memristive Electronic Components
(University of Waterloo, 2023-05-04)Growing interest in the fields of flexible electronics and AI are leading the development of new manufacturing techniques able to make computer hardware devices that can suite their unique needs. Research into these areas ... -
Wetting & Capillarity: From Thin Film Mediated Processes to Droplet-Surface Interactions
(University of Waterloo, 2023-04-27)Wetting and capillarity remain ubiquitous in both daily lives and industrial applications. The present thesis explores several fundamentally interesting problems of practical relevance in wetting and capillarity. Two primary ... -
Autonomous Railway Defect Detection
(University of Waterloo, 2023-04-27)Railway defects can lead to enormous economic and human losses. Among all types of the defects, surface defects are the most common and prominent. Although various non-destructive methods can be used to detect railway ... -
Lagrangian Flow Field Reconstruction Based on Constrained Stable Radial Basis Function
(University of Waterloo, 2023-04-27)Recent advances in three-dimensional (3D) high seeding density time-resolved Lagrangian particle tracking (LPT) techniques have made diagnosing fluid flows at high resolution in space and time under a Lagrangian framework ... -
Bonding of Glass-to-Glass for the Development of Ultrafast Microchip Lasers
(University of Waterloo, 2023-04-21)Direct glass-to-glass bonding is important for high-technology components in optics, microfluidics, and microelectromechanical systems applications. The focus of this research is on the design of an ultrafast, pulsed, ... -
Design and Optimization of Low-Specific Speed Centrifugal Pump
(University of Waterloo, 2023-04-21)Centrifugal pumps find applications in a wide range of industries, such as rocketry, oil and gas, petroleum, etc. A main property used to characterize the design of pumps is the specific speed, which relates the flow ... -
Development of Non-Spherical Platinum Catalyst with Functionalized Carbon Supports for Proton Exchange Membrane Fuel Cells
(University of Waterloo, 2023-04-21)Energy conversion devices capable of zero-emission operation are needed to limit the impacts of anthropogenic climate change. Proton exchange membrane (PEM) fuel cells are well suited to address this need, as they can ... -
Development of a Distributed Model Predictive Controller for Over-Actuated Autonomous Vehicle Path Tracking
(University of Waterloo, 2023-04-19)Widespread interest in the advancement of autonomous vehicle technology is motivated by multiple outstanding issues associated with vehicular travel despite the decades-long ubiquity of this mode of transportation. It is ... -
Flow Dynamics and Aeroacoustics of Flow-induced Vibration of Bluff Bodies
(University of Waterloo, 2023-04-17)Flow-induced vibration (FIV), a common phenomenon of fluid-structure interaction (FSI), is found everywhere and at all scales in the applications of marine, civil, aeronautical, and power engineering. The study of FIV ... -
Cooperative Vehicle Perception and Localization Using Infrastructure-based Sensor Nodes
(University of Waterloo, 2023-04-17)Reliable and accurate Perception and Localization (PL) are necessary for safe intelligent transportation systems. The current vehicle-based PL techniques in autonomous vehicles are vulnerable to occlusion and cluttering, ... -
Model Predictive Controller Weight Tuning and Real-Time Learning-Based Weight Selection
(University of Waterloo, 2023-04-11)A variety of control systems with specific goals are designed and utilized in every vehicle system. Optimal performance of each of these control systems is essential to keep the vehicle in a safe and desirable driving ... -
Towards Predicting Densification and Deformation in the Sintering of Binder-Jet Additively Manufactured Parts
(University of Waterloo, 2023-04-10)Binder-jet additive manufacturing (BJAM) is a three-dimensional (3D) printing process which produces parts from successive layers of a powder material (typically metal or ceramic) and selective jetting of a liquid binder ... -
Self-Localization for Autonomous Driving Using Vector Maps and Multi-Modal Odometry
(University of Waterloo, 2023-04-05)One of the fundamental requirements in automated driving is having accurate vehicle localization. It is because different modules such as motion planning and control require accurate location and heading of the ego-vehicle ... -
In-situ monitoring and intermittent controller for adaptive trajectory generation during laser directed energy deposition via powder feeding
(University of Waterloo, 2023-03-27)Laser Directed Energy Deposition (LDED) is one of the advanced manufacturing technologies for building near-net-shaped engineering components in a layer-by-layer fashion using high-power lasers as an energy source. LDED ... -
Improving the multiscale morphological and mechanical properties of laser welded Al-Si coated 22MnB5 press-hardened steels
(University of Waterloo, 2023-03-27)In the automotive industry, the demand for reduced vehicle weight, improved safety and enhanced crashworthiness qualities continues to rise which introduces the need for parts and components with tailored properties. This ... -
An integrative investigation of liquid metal embrittlement in the Fe-Zn system: From responsible mechanisms to mitigation strategies
(University of Waterloo, 2023-03-23)Liquid metal embrittlement (LME) is a problematic phenomenon that results in the abrupt failure of a ductile metal that is exposed to a reactive liquid metal while simultaneously experiencing a tensile load. Despite extensive ... -
Socially and Spatially Aware Motion Prediction of Dynamic Objects for Autonomous Driving
(University of Waterloo, 2023-03-17)The primary goal of this thesis project is to develop a robust object motion prediction framework enabling safe decision making for autonomous vehicles in various driving scenarios. Given the comparatively higher importance ... -
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, ...