Browsing Mechanical and Mechatronics Engineering by Title
Now showing items 129-148 of 1500
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Cell Permeabilization Using Supercritical Carbon Dioxide
(University of Waterloo, 2001)Supercritical fluids have unique properties which may make them ideal as reaction media for biotransformation or extractive solvents. Supercritical fluids are ideal for reducing diffusivity limitations over conventional ... -
Cervical Spine Segment Modeling at Traumatic Loading Levels for Injury Prediction
(University of Waterloo, 2012-03-21)Cervical spine injury can range from minor to severe or fatal, where severe injuries can result in incomplete or complete quadriplegia. There are close to 45,000 Canadians currently affected by paralysis due to traumatic ... -
Cervical Total Level Arthroplasty System With PEEK All-Polymer Articulations
(University of Waterloo, 2011-01-25)The cervical spine must provide structural support for the head, allow large range of motion and protect both the spinal cord and branching nerves. There are two types of spinal joints: the intervertebral discs which are ... -
A CFD Investigation of Balcony Spill Plumes
(University of Waterloo, 2006-12-05)A series of numerical modeling studies were conducted to characterize the mass flow rates in balcony spill plumes (BSP), a type of buoyant fire plume occurring in atria. The variation of BSP mass flow rate as a function ... -
A CFD Investigation of Turbulent Buoyant Helium Plumes
(University of Waterloo, 2007-09-28)The objective of this work is to assess the capabilities of two modeling approaches, Reynolds-Averaged Navier Stokes (RANS) and Large Eddy Simulation (LES), to investigate turbulent buoyant helium plumes for the purpose ... -
Chalcogenide and metal-oxide memristive devices for advanced neuromorphic computing
(University of Waterloo, 2023-07-27)Energy-intensive artificial intelligence (AI) is prevailing and changing the world, which requires energy-efficient computing technology. However, traditional AI driven by von Neumann computing systems suffers from the ... -
Challenges Faced in Application of Fire and Life Safety Design in Current Canadian Building Code
(University of Waterloo, 2023-01-24)In the interest of public safety, building designs and construction in Canada are regulated by local legislation which is typically a provincial, or as appropriate municipal, building code based on the National Building ... -
Characterisation and modeling of precipitation kinetics and yield strength in variously treated 7000-series aluminum alloys
(University of Waterloo, 2021-10-01)This thesis investigates the effects of: (a) various aging practices, and (b) deformation during a warm-forming cycle, on the precipitation hardening response and aging kinetics of AA7050 and AA7075, respectively. The ... -
Characterization and microstructure-based modeling of spot weld failure in hot stamped steel
(University of Waterloo, 2022-02-08)The performance of automotive safety components in a crash event depends on the mechanical properties of the sheet metal as well as the failure behavior of the spot welds that are used for sheet metal assembly. Unlike many ... -
Characterization and Modeling of Forged ZK60 Mg Alloys under Quasi-static and Fatigue Loadings
(University of Waterloo, 2020-01-24)In response to impending changes to the environmental regulations on the vehicles’ gas consumption rate, the transportation sector is motivated toward the widespread adoption of lightweight materials in the manufacturing ... -
Characterization and Modeling of Sheared Edge Failure in Advanced High Strength Steel
(University of Waterloo, 2018-03-07)Edge failure is one of the major problems associated with forming of advanced high strength steels (AHSS) such as dual-phase (DP) steels. The development of ferritic-bainitic steels such as complex-phase (CP) steels have ... -
Characterization and Modeling of Smooth and Notched Rolled ZEK100-O under Cyclic Load
(University of Waterloo, 2018-10-26)As an effective way to reduce greenhouse gas emissions, goals on weight reduction has been fully focused by automotive manufacturers to meet the environmental regulations. Magnesium (Mg) alloys, with its high specific ... -
Characterization and Modelling of 3rd Generation Advanced High Strength Steel Automotive B-pillars from Forming to Crash
(University of Waterloo, 2022-09-26)This thesis investigates the application of 3rd Generation Advanced High-Strength Steels (3rd Gen AHSS) with ultimate tensile strengths of 980 and 1180 MPa to the forming and crash performance of an automotive B-pillar. ... -
Characterization and Modelling of Additively Manufactured Hastelloy X Parts under Quasi-Static and Cyclic Loading
(University of Waterloo, 2021-04-28)Laser powder-bed fusion (LPBF) is one of the main additive manufacturing (AM) methods, which has been proven to produce complex metallic parts with fine features. Understanding the correlation of process parameters to the ... -
Characterization and modelling of quasi-static and fatigue notch effect in AZ31B-H24 rolled sheet
(University of Waterloo, 2018-10-25)The transportation sector releases large amounts of harmful greenhouse gases into Earth’s atmosphere. Vehicle weight reduction through the use of magnesium alloys is an effective way to reduce carbon dioxide emission and ... -
Characterization and Simulation of the Microstructure of Additively Manufactured Hastelloy X Parts with Columnar Grain Structure
(University of Waterloo, 2021-05-21)One of the well-known AM techniques is laser powder-bed fusion (LPBF), which enables engineers to benefit from the concept of “design freedom” while designing complex geometries compared to other conventional methods. This ... -
Characterization and Simulation of Warm Forming of 6xxx and 7xxx Series Aluminum Alloys
(University of Waterloo, 2017-09-12)This thesis investigates warm forming of 6000 and 7000 series aluminum alloys, namely AA6013 T6, AA7075 T6 and a developmental 7000 series alloy (designated AA70XX T76), including characterization and validation of the ... -
Characterization and Size Optimization of Additively Manufactured Flexible Piezoresistive Sensors for Vibration Strain Sensing
(University of Waterloo, 2021-12-21)Flexible piezoresistive strain sensors have promising applications in areas such as wearables and soft robotics. For sensing dynamic strains, such as a runner’s gait or a slipping object held by a robotic gripper, these ... -
Characterization and Through Process Modelling of Large Strain Phenomena for Aluminum Alloys at Room and Elevated Temperatures
(University of Waterloo, 2017-02-16)The objective of this research is to model and analyze large strain problems (rolling, hot compression) in FCC polycrystals. In the first part of this research, a rate-dependent crystal plasticity based Element Free Galerkin ... -
Characterization of a Live Fire Training Simulator for use in the Canadian Fire Service
(University of Waterloo, 2020-06-17)This thesis reports on the design, instrumentation, testing, and characterization of a live fire training simulator for use in the Canadian Fire Service. The importance of fire training, including live fire training ...