Browsing Mechanical and Mechatronics Engineering by Title
Now showing items 1061-1080 of 1497
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Nitrous Oxide State Estimation in Hybrid Rocket Oxidizer Tanks
(University of Waterloo, 2017-02-22)There is an increasing interest in the use of hybrid rockets to accomplish tasks that require precise control of the craft. Fuel is being consumed as the craft is propelled, causing the mass of the rocket to change. In ... -
Non-Body Conformal Grid Methods for Large-Eddy Simulations of Compressible Flows and their Applications in Computational Aeroacoustics
(University of Waterloo, 2015-04-17)In the applications of computational aeroacoustics (CAA) involving far-field noise predictions, the most common solution strategy is the \textit{hybrid method} which combines a computational fluid dynamics (CFD) solver for ... -
Non-linear, non-monotonic effect of nano-scale roughness on particle deposition in absence of an energy barrier: Experiments and modeling
(Springer Nature, 2015-12-11)Deposition of colloidal- and nano-scale particles on surfaces is critical to numerous natural and engineered environmental, health, and industrial applications ranging from drinking water treatment to semi-conductor ... -
Nondifferentiable energy minimization for cohesive fracture in a discontinuous Galerkin finite element framework
(University of Waterloo, 2019-05-23)Until recently, most works on the computational modelling of fracture relied on a Newtonian mechanics approach, i.e., momentum balance equations describing the motion of the body along with fracture criteria describing the ... -
Nonlinear and Geometric Controllers for Rigid Body Vehicles
(University of Waterloo, 2018-10-18)In this thesis we investigate the motion control problem for a class of vehicles C V , which includes satellites, quadrotors, underwater vehicles, and tailsitters. Given a globally represented model of C V , and a curve, ... -
Nonlinear electrokinetic motion of electrically induced Janus droplets in microchannels
(Elsevier, 2019-03-07)The nonlinear electrokinetic motion of electrically induced Janus droplets (EIJDs) in a microchannel is studied in this paper. The EIJDs were fabricated by operating the positively charged aluminum oxide nanoparticles to ... -
Nonlinear Optimal Control of Automated Vehicles in a Connected Environment
(University of Waterloo, 2019-09-12)This thesis is based around the University of Waterloo EcoCAR Team (UWAFT) and the EcoCAR Mobility Challenge. The overall objective of the competition is to design and build a hybrid electric vehicle with SAE Level 2 ... -
Nonprehensile Manipulation via Multisensory Learning from Demonstration
(University of Waterloo, 2018-12-04)Dexterous manipulation problem concerns control of a robot hand to manipulate an object in a desired manner. While classical dexterous manipulation strategies are based on stable grasping (or force closure), many human-like ... -
A Novel 8x8 CMOS Sensor Array for Thermal Compression Bonding with in-situ XYZ Force and Temperature Measurement
(University of Waterloo, 2016-05-09)Flip chip is an electronic packaging technology that is becoming more popular in first level electronic packaging as the need for high density electrical interconnects becomes more relevant. The parallel nature of flip ... -
A Novel Furnace Design Utilizing a Low Temperature Plastic Condensing Heat Exchanger
(1982-03)The initial phase of a research and development program for the Consumers' Gas Co. and the Federal Department of Energy, Mines and Resources to design a condensing heat exchanger/gas fired residential air furnace has been ... -
Novel Infusion Procedure for Antimicrobial Fabric Generation
(University of Waterloo, 2023-07-25)Antimicrobial fabrics are fabrics that can kill or slow down the growth of microorganisms that contact the fabric. It is a massive field that is developing due to the sheer variety of fabrics that are possible. Antimicrobial ... -
A Novel Lab-on-chip System for Counting Particles/Cells Based on Electrokinetically-induced Pressure-driven Flow and Dual-wavelength Fluorescent Detection
(University of Waterloo, 2013-12-10)For the past two decades, flow cytometry has been widely used as a powerful analysis tool for the diagnosis of many diseases due to its ability to count, characterize and sort cells. However, conventional flow cytometers ... -
Novel Laser Based NiTi Shape Memory Alloy Processing Protocol for Medical Device Applications
(University of Waterloo, 2014-04-01)The unique performance offerings of NiTi based shape memory alloys (SMAs), which includes the shape memory effect (SME), pseudoelasticity (PE) and biocompatibility have led to widespread acceptance of these alloys as ... -
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 ... -
Novel MEMS Tunable Capacitors with Linear Capacitance-Voltage Response Considering Fabrication Uncertainties
(University of Waterloo, 2008-04-23)Electrostatically actuated parallel-plate MEMS tunable capacitors are desired elements for different applications including sensing, actuating and communications and RF (radio frequency) engineering for their superior ... -
Novel Methods in Ball Bond Reliability Using In-Situ Sensing and On-Chip Microheaters
(University of Waterloo, 2013-01-18)Wire bonding is the process of creating interconnects between the circuitry on a microchip and PCB boards or substrates so that the microchip can interact with the outside world. The materials and techniques used in this ... -
A novel microfluidic resistive pulse sensor with multiple voltage input channels and a side sensing gate for particle and cell detection
(Elsevier, 2019-04-04)Traditionally, a resistive pulse sensor (also known as Coulter counter) works by letting a particle pass through a small orifice in an electrolyte solution. The detection sensitivity mainly relies on the volume ratio of ... -
Novel Semi-Active Suspension with Tunable Stiffness and Damping Characteristics
(University of Waterloo, 2013-01-15)For the past several decades there have been many attempts to improve suspension performance due to its importance within vehicle dynamics. The suspension system main functions are to connect the chassis to the ground, ... -
Novel Soft-Rigid Hybrid Robotics Approach Enabled via Multilayered Bellow-type Soft Pneumatic Actuator
(University of Waterloo, 2023-08-21)Soft robotics is an emerging field characterized by compliant and adaptable structures, presents unique challenges and opportunities for technological advancements. The thesis provided herein aimed to explore various soft ... -
A Novel System for the Measurement of Dynamic Loading on a Bicycle Frame
(University of Waterloo, 2013-02-21)The design of bicycle frames has remained fairly static for the majority of the past century, but recent increases in demand for high performance bicycles has created an accelerated design cycle that requires innovation. ...