Browsing Mechanical and Mechatronics Engineering by Title
Now showing items 1261-1280 of 1509
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Resistive Switching Memory of TiO2 Nanowire Networks Grown on Ti Foil by a Single Hydrothermal Method
(Springer, 2017-04-01)The resistive switching characteristics of TiO2 nanowire networks directly grown on Ti foil by a single-step hydrothermal technique are discussed in this paper. The Ti foil serves as the supply of Ti atoms for growth of ... -
Resistor-Network Formulation of Multi-Temperature Free Convection Problems
(American Institute of Aeronautics and Astronautics, 2017-01-11)In recent work, the resistor-network formulation of forced-convection problems and a technique (dQdT) for evaluating the paired convective resistances that characterize the network were presented. This technique entails ... -
Resistor-Network Formulation of Multitemperature Forced-Convection Problems
(American Institute of Aeronautics and Astronautics, 2016-09-07)Many convection heat transfer problems involve more than two isothermal heat sources/sinks. A network of multiple convective resistors connecting temperature nodes representing the isothermal sources (walls, inlet flows, ... -
Resonant Adaptive Mirrors
(University of Waterloo, 2020-05-28)Deformable mirrors (DMs) are integrated into adaptive optical (AO) systems to compensate for wavefront aberrations. These aberrations degrade the image resolution of telescopes, microscopes, ophthalmoscopes, and optical ... -
A Review of physics-based and data-driven models for real-time control of polymer electrolyte membrane fuel cells
(Elsevier, 2021-12)The real-time model-based control of polymer electrolyte membrane (PEM) fuel cells requires a computationally efficient and sufficiently accurate model to predict the transient and long-term performance under various ... -
Riemann solvers with non-ideal thermodynamics: exact, approximate, and machine learning solutions
(University of Waterloo, 2022-09-22)The Riemann problem is an important topic in the numerical simulation of compressible flows, aiding the design and verification of numerical codes. A limitation of many of the existing studies is the perfect gas assumption. ... -
Robotic Reach, Grasp, and Pick-and-Place using Combined Reinforcement Learning and Traditional Controls
(University of Waterloo, 2022-09-01)Electrically actuated robotic arms have been implemented to complete tasks which are repetitive, strenuous, and/or dangerous since they were first developed in the 1970s. More than 50 years have passed since initial ... -
Robust and Adaptive Control Methods for Small Aerial Vehicles
(University of Waterloo, 2012-09-26)Recent advances in sensor and microcomputer technology and in control and aeroydynamics theories has made small unmanned aerial vehicles a reality. The small size, low cost and manoueverbility of these systems has positioned ... -
Robust Bayesian Detection and Tracking of Lane Boundary Markings for Autonomous Driving
(University of Waterloo, 2016-05-11)Lane detection is a fundamental and challenging task in autonomous driving and must be performed safely and robustly to avoid catastrophic failures. Current methods do not perform effectively in the challenging scenarios ... -
Robust Model for Fatigue Life Estimation from Monotonic Properties Data for Steels
(University of Waterloo, 2013-06-18)Determining the fatigue properties (Manson-Coffin and Ramberg-Osgood parameters) for a steel material requires time consuming and expensive testing. In the early stages of a design process, it is not feasible to perform ... -
The Role of Gold-Graphene Hybrid Nanostructure on Promoting Localized Surface Plasmonic Resonance Sensor Performance
(University of Waterloo, 2020-01-10)Localized surface plasmon resonance (LSPR) sensors have a wide range of applications, from medical diagnostics to environmental monitoring. In addition, the simplicity of the excitation method leads to simplicity in the ... -
Role of heat balance on the microstructure evolution of cold spray coated AZ31B with AA7075
(Elsevier, 2021-07)A promising solid-state coating mechanism based on the cold spray technique provides highly advantageous conditions on thermal-sensitive magnesium alloys. To study the effect of heat balance in cold spray coating on ... -
Role of loading direction on cyclic behaviour characteristics of AM30 extrusion and its fatigue damage modelling
(Elsevier, 2017-07-18)Anisotropic fatigue and cyclic behaviour of AM30 Mg alloy extrusion is investigated by performing fully-reversed strain-controlled tension-compression cyclic tests at strain amplitudes between 0.3% and 2.3%, along extrusion ... -
Role of Loading Direction on Fatigue Behavior of Smooth and Notched ZK60 Extrusion
(University of Waterloo, 2018-09-20)In spite of the increasing trend of magnesium (Mg) application over the last decade, numerous technical restrictions still limit Mg alloy’s extensive implementation in industry. For instance, many mechanical behaviors of ... -
Room and Elevated Temperature Constitutive Response of Polycrystalline Materials Exhibiting Tension-Compression Asymmetry under Monotonic Loading
(University of Waterloo, 2014-05-09)A continuum plasticity yield function is developed that captures tension/compression asymmetry and its evolution as exhibited by HCP materials such as magnesium alloy sheet. The model, referred to herein as “CPB06ex3ev”, ... -
Royal Canadian Navy Evaluation of Handheld Aerosol Extinguishers
(University of Waterloo, 2013-04-30)Defence Research and Development Canada - Atlantic is currently under a project arrangement with Sweden and Holland to investigate new or emerging fire suppression technologies in naval applications. One possible outcome ... -
Safe and Efficient Navigation of a Mobile Robot: Path Planning Based on Hierarchical Topology Map and Motion Planning with Pedestrian Behavior Model
(University of Waterloo, 2022-09-02)Safety in mobile robot navigation is an essential aspect, but it is often accompanied by a trade-off of efficiency in different navigation steps. For global planning, safety is frequently handled by inflated obstacles. ... -
Sagging resistance of warm formed aluminum brazing sheet
(Elsevier, 2018-04-01)Interrupted tensile tests, performed between room temperature (RT) and 250°C, were used to simulate warm forming of an AA3003/AA4045 brazing sheet. Brazing performance was predicted from sagging distance measurements after ... -
Sampling-Window Based Approach for Fire Gas Analysis of Rigid Foams
(University of Waterloo, 2013-08-22)A sampling-window based approach was developed to collect and analyze the gases evolved during fire performance testing using the cone calorimeter. For this purpose, a Fourier Transform Intra-red (FTIR) Spectroscopy system ... -
Scan Registration Using the Normal Distributions Transform and Point Cloud Clustering Techniques
(University of Waterloo, 2013-04-23)As the capabilities of autonomous vehicles increase, their use in situations that are dangerous or dull for humans is becoming more popular. Autonomous systems are currently being used in several military and civilian ...