Browsing Mechanical and Mechatronics Engineering by Title
Now showing items 1221-1240 of 1507
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Quantitative Optical Gas Imaging using Broadband Mid-wavelength Infrared Single-Channel and Multispectral Cameras
(University of Waterloo, 2022-11-25)Quantifying and limiting methane emissions from upstream oil and gas is an efficient strategy to reduce anthropogenic climate change and has received considerable attention from regulators in recent years. Quantification ... -
Quasi-static and dynamic characterization of unidirectional non-crimp carbon fiber fabric composites processed by HP-RTM
(Elsevier, 2019-07)Recently developed high-pressure resin transfer molding (HP-RTM) processes have enabled the integration of lightweight fiber-reinforced composites into automobiles (e.g., frame and roof components, floor segments), which ... -
Quasi-Static, Cyclic, and Fracture Characteristics of Plasma Transferred Wire Arc (PTWA) Thermal Sprayed AlSi Cylinder Bores
(University of Waterloo, 2022-05-12)This study examines the microstructure and mechanical properties of plasma transferred wire arc (PTWA) coating of typical alloyed steel, deposited on diecast aluminum alloy cylinder bores. The coating surface and microstructure ... -
Quench Sensitivity of 6xxx Aluminum Alloys
(University of Waterloo, 2016-05-16)The use of AA6xxx series alloys continues to grow with the increasing demand for more fuel efficient vehicles. AA6xxx series alloys are commonly used in automotive applications because of their extrudability and good ... -
A Radar-Based In-Cabin Health Monitoring System
(University of Waterloo, 2024-05-17)The topic of in-cabin health care monitoring within vehicles has recently garnered significant attention. This technology serves two primary applications in a vehicle. First is the monitoring of the vital signs of drivers ... -
Rapid Fabrication Techniques for Anatomically-Shaped Calcium Polyphosphate Substrates for Implants to Repair Osteochondral Focal Defects
(University of Waterloo, 2007-10-01)The purpose of the present study is to develop techniques for manufacturing anatomically-shaped substrates of implants made from calcium polyphosphate (CPP) ceramic. These substrates have tissue-engineered cartilage growing ... -
Rapid Identification of Virtual CNC Drives
(University of Waterloo, 2007-08-23)Virtual manufacturing has gained considerable importance in the last decade. To obtain reliable predictions in a virtual environment, the factors that influence the outcome of a manufacturing operation need to be carefully ... -
Rapid prediction of real-time thermal characteristics, solidification parameters and microstructure in laser directed energy deposition (powder-fed additive manufacturing)
(Elsevier, 2019-12)The localized thermal characteristics, solidification parameters and the corresponding microstructure depend highly on the process parameters in the laser powder-fed additive manufacturing (LPF-AM) process. However, ... -
Rapid Thermo-mechanical Modeling of Laser Powder-Bed Fusion Additive Manufacturing using an Effective Heat Source
(University of Waterloo, 2021-09-22)Laser powder-bed fusion (LPBF) is one of the most common types of additive manufacturing (AM) processes that has gained a lot of attraction by industries. This process induces a high magnitude of a temperature gradient ... -
Real time resistance monitoring during sintering of silver paste
(Elsevier, 2018-01-15)Real time resistance monitoring technology is used to study the silver sintering process. Signals of joint resistance show events such as resistance increase to >10 GΩ, abrupt resistance drop from >10 GΩ to <1 kΩ, ... -
Real time resistance monitoring technology for microjoining process and reliability test
(University of Waterloo, 2017-12-14)New microjoining materials are needed for the soldering of electronic components due to environmental concern, reliability concern, and designing restriction. For example, a new low melting point solder is needed due to ... -
Real-time 3D Object Detection for Autonomous Driving
(University of Waterloo, 2018-05-10)This thesis focuses on advancing the state-of-the-art 3D object detection and localization in autonomous driving. An autonomous vehicle requires operating within a very unpredictable and dynamic environment. Hence a robust ... -
Real-Time Closed-Loop Control of Microstructure and Geometry in Laser Materials Processing
(University of Waterloo, 2017-12-18)Laser Materials Processing (LMP) is currently one of the fastest growing technologies of the 21st century. Different categories of this technology such as Laser Additive Manufacturing (LAM) and Laser Heat Treatment (LHT) ... -
Real-time estimation of the road bank and grade angles with unknown input observers
(Taylor & Francis, 2017-01-24)This paper proposes an approach for the estimation of the road angles independent from the road friction conditions. The method employs unknown input observers on the roll and pitch dynamics of the vehicle. The correlation ... -
Real-Time Monitoring of Thermal Processes
(University of Waterloo, 2023-09-27)In this research, a monitoring system for thermal processes was developed which measures the most critical process phenomena, such as thermal dynamics (peak temperature, heating rate, and cooling rate) and geometric features, ... -
Realtime Motion Planning for Manipulator Robots under Dynamic Environments: An Optimal Control Approach
(University of Waterloo, 2013-04-19)This report presents optimal control methods integrated with hierarchical control framework to realize real-time collision-free optimal trajectories for motion control in kinematic chain manipulator (KCM) robot systems ... -
Reconfigurable Integrated Control for Urban Vehicles with Different Types of Control Actuation
(University of Waterloo, 2017-12-08)Urban vehicles are designed to deal with traffic problems, air pollution, energy consumption, and parking limitations in large cities. They are smaller and narrower than conventional vehicles, and thus more susceptible to ... -
Reconfigurable Integrated Vehicle Stability Control Using Optimal Control Techniques
(University of Waterloo, 2017-09-15)The motivation for the development of vehicle stability control systems comes from the fact that vehicle dynamic behavior in unfavorable driving conditions such as low road-tire adhesion and high speed differs greatly from ... -
Recovering Optimal Cost Functions for Natural Walking: From Musculoskeletal Simulation to Exoskeleton Control
(University of Waterloo, 2022-05-03)Human movement studies have contributed to our understanding of how the central nervous system's (CNS) interactions with our body results in rich and complex motor behaviours, such as human gait. Such understanding is ... -
Recurrent Neural Network Dual Resistance Control of Multiple Memory Shape Memory Alloys
(University of Waterloo, 2018-08-23)Shape memory alloys (SMAs) are materials with extraordinary thermomechanical properties which have caused numerous engineering advances. NiTi SMAs in particular have been studied for decades revealing many useful characteristics ...