UWSpace will be migrating to a new version of its software from July 29th to August 1st. UWSpace will be offline for all UW community members during this time.
Mechanical and Mechatronics Engineering: Recent submissions
Now showing items 181-200 of 1512
-
Constitutive and Fracture Characterization of High Strength Aluminum Alloys at Low and Elevated Strain Rates
(University of Waterloo, 2022-05-27)The present research investigates the constitutive and fracture behavior of three high strength automotive aluminum sheet alloys, AA6013-T6, AA7075-T6, and AA7xxx-T6 under quasi-static and elevated strain rate conditions. ... -
Plastic Instability and Failure of Sheet Metals Subjected to Complex Stress States
(University of Waterloo, 2022-05-19)The rapid development of new emerging classes of steels has outpaced the methodologies and modelling strategies to exploit the superior mechanical properties in the design stage of structural automotive lightweight components. ... -
Simulation of Soot Formation in Turbulent Diffusion Flames Using Conditional Source-term Estimation
(University of Waterloo, 2022-05-19)Conditional Source-term Estimation (CSE) is a turbulent combustion model which uses the conditional averages of scalars for calculating the mean reaction source term in the species transport equation. CSE has been shown ... -
Integration of a Self-Powered Sensor and Electronics to Produce a Battery-Free, Wireless, Water Leak Detection Device
(University of Waterloo, 2022-05-18)Water damage accounts for 73% by dollars lost in commercial real estate claims [1]. Water leak detectors are a key solution to the problem but suffer from numerous drawbacks, namely high costs, lack of scalability, and ... -
Investigation of Turbulent Spray Flames Using the Conditional Source-term Estimation (CSE) Approach
(University of Waterloo, 2022-05-16)Conditional Source-term Estimation (CSE) is a turbulent combustion model for gaseous combustion. This work aims at extending the CSE formulation to address turbulent spray combustion. The Eulerian-Lagrangian method is ... -
Variable-Structure Cable-Driven Parallel Robots
(University of Waterloo, 2022-05-16)Cable-driven parallel robots (CDPR) are a special class of robotic manipulators consisting of a rigid end effector suspended, constrained, and actuated by a number of length-varying cables. Since cable mass is typically ... -
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 ... -
Multiple Tools for Automated Nanofiber Characterization by Image Processing
(University of Waterloo, 2022-05-10)Nanofibers have been widely used in many engineering applications, including air filtration, energy storage, and biomedical engineering. Their performances largely depend on the morphology of nanofibers. The key morphological ... -
FPGA Based Ultrasonic Non-Destructive Testing
(University of Waterloo, 2022-05-05)In this research, a prototype of an ultrasonic testing device was developed based on a field-programmable gate array for ultrasonic testing. Ultrasound is a mechanical wave that is generated by a vibrating object and ... -
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 ... -
Developing and Improving a Thermometallurgical Model for 22MnB5 Steel in a Roller Hearth Furnace
(University of Waterloo, 2022-04-29)Ultra-high strength steel (UHSS) such as Al-Si coated 22MnB5 are commonly used in the hot forming die quenching (HFDQ) process to produce light-weight automotive parts while maintaining good crashworthiness. The steel blank ... -
Hardware Design and Implementation of an Electromagnetic Levitation System in an Additive Manufacturing Environment
(University of Waterloo, 2022-04-29)Magnetic Levitation and Additive Manufacturing are two promising fields with ever growing interest in several industrial settings. There is, however, negligible overlap between the two fields. This research aims to combine ... -
Machine Learning Approaches in Crystal Plasticity
(University of Waterloo, 2022-04-27)The continued advancements in material development and design require understanding the relationships between microstructure and flow behaviour. Crystal plasticity (CP) is a high-fidelity computational method that helps ... -
A New Crystal Plasticity Framework to Simulate Plastic Deformation Phenomena in Precipitation Hardened Aluminum Alloys
(University of Waterloo, 2022-04-26)This thesis outlines the development of a numerical framework for simulating aluminum alloys that exhibit the precipitation hardening phenomenon. A novel crystal plasticity-based precipitation strengthening model is ... -
In-Situ Monitoring and Quality Assurance Algorithms for Laser Powder-Bed Fusion
(University of Waterloo, 2022-04-13)This dissertation describes the development of advanced in-situ defect detection algorithms using analytical and machine learning methods, followed by intermittent control systems to minimize the number of defects in parts ... -
Co-production of hydrogen and ethylene in an oxygen permeable membrane reactor
(University of Waterloo, 2022-04-08)The demand for low-carbon hydrogen keeps increasing. Hydrogen production from water splitting attracts attention due to the easiness of hydrogen purification from hydrogen-water mixtures and the flexibility of renewable ... -
Investigating the evolution of the aluminum-silicon coating on 22MnB5 steel during heating
(University of Waterloo, 2022-04-07)To combat greenhouse gas emissions and improve fuel economy, automotive manufacturers have searched for methods to reduce vehicle weight. As such, hot stamping has become an increasingly popular sheet metal forming technique, ... -
Investigation on the implications of passive fire barriers on the fire fighting tactics of the Royal Canadian Navy
(University of Waterloo, 2022-03-28)The Royal Canadian Navy (RCN) is currently in the process of recapitalizing the fleet under the National Shipbuilding Strategy (NSS). This will result in a modern fleet that includes new marine safety requirements that did ... -
Short-term forecasting and uncertainty analysis of wind turbine power based on long short-term memory network and Gaussian mixture model
(Elsevier, 2019-05)Wind power plays a leading role in the development of renewable energy. However, the random nature of wind turbine power and its associated uncertainty create challenges in dispatching this power effectively in the power ... -
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 ...