Browsing Mechanical and Mechatronics Engineering by Supervisor "Zhou, Norman"
Now showing items 21-38 of 38
-
Investigation of the use of Dynamic Resistance in Adaptive Welding and Statistical Relation to Quality
(University of Waterloo, 2019-09-19)The pursuit of real time quality detection of a resistance spot weld (RSW) in the automotive industry has progressed alongside technology. With the capability of modern controllers to collect real-time data from the welding ... -
Joining of Silver Nanoparticles: Computer Simulations and Experimental Observations
(University of Waterloo, 2016-02-18)Abstract This dissertation introduced a new type of high aspect ratio silver nanoparticle, synthesized by assembly and joining of hexagonal and triangular nanoplates. The synthesis procedure is a simple mixing at room ... -
Kinetics of Carbide Precipitation during Laser Beam Welding of Dual-Phase and Martensitic Steels
(University of Waterloo, 2016-09-14)In order to ensure a high passenger safety and reduce greenhouse gas emissions, dual-phase (DP) and martensitic steels (MS) are increasingly being used in the automotive industries. However, the main issue in the welding ... -
Laser Processing and Modelling of Multiple Memory Shape Memory Alloys
(University of Waterloo, 2018-04-18)Laser processing of NiTi shape memory alloys (SMA) has been identified as having great potential in surface treatment, welding, and novel performance requirement applications. However, no models have been developed to ... -
Laser Processing, Thermomechanical Processing, and Thermomechanical Fatigue of NiTi Shape Memory Alloys
(University of Waterloo, 2016-04-28)NiTi shape memory alloys (SMAs) have revolutionized engineering design across all industries, with major contributions in the medical, aerospace, and automotive industries. These fascinating materials possess the shape ... -
Laser Welding of Complex Phase and Dual Phase Advanced High Strength Steels - The Effects that Welding has on Microstructure and Formability
(University of Waterloo, 2020-05-19)To assist in the successful applications of tailor-welded assemblies made from advanced high strength steel (AHSS), there needs to be a thorough understanding of how laser welding process parameters influences the weld ... -
Laser Welding of Medium-Manganese Steel
(University of Waterloo, 2016-08-31)Medium-Manganese (MMn) third generation advanced high strength steel (AHSS) was joined using laser welding. The effects of rapid heating and cooling thermal cycles imposed by laser welding on MMn steel was investigated. ... -
Monitoring the Behaviour of a Battery-free Water Powered Sensor
(University of Waterloo, 2023-09-12)The Insurance Bureau of Canada says, “Water is the new fire”. In terms of cost of damage to homeowners and insurers, water damage is a rapidly growing threat to property and can have insidious, long-term effects if not ... -
Nanomaterials in Water Remediation: Functionalization and Applications for Pharmaceutical Removal in Municipal Wastewater Effluent
(University of Waterloo, 2019-09-10)With an increasing population, there is a higher pressure on natural resources including water. Increased water consumption, altered hydrology and pollution, threaten the sustainability of aquatic ecosystems and water ... -
One-dimensional titanium dioxide nanomaterial based memristive device and its neuromorphic computing applications
(University of Waterloo, 2019-08-13)Memristor devices as the alternative to the next-generation non-volatile memory devices has been widely studied recently due to its advantages of simple structure, fast switching speed, low power consumption. Among all the ... -
Performance and Degradation of a Battery-Free Water Leak Detection Device
(University of Waterloo, 2022-12-21)Water waste is one of the major causes of water scarcity, and it has become an alarming issue these days. According to the reports from UNICEF, it is estimated that by early 2025, half of the world's population may be ... -
Process optimization of Gas Metal Arc Brazing technology
(University of Waterloo, 2022-08-03)Gas-metal-arc brazing (GMAB) technology is a transformative non-fusion joining process used in the joining of thin-gauge Zn-coated advanced high strength steels (AHSSs) employed in the automotive industry. Due to its lower ... -
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 ... -
Resistance Spot Welding and In-Process Heat Treatment of Hot Stamped Boron Steel
(University of Waterloo, 2016-03-15)Escalating environmental concerns have prompted efforts to reduce vehicle weight and carbon emissions, resulting in increased application of advanced high strength steels (AHSS). 22MnB5 hot stamping grade AHSS, namely ... -
Silver Nanoparticle Monolayers for Plasmonics and Surface-Enhanced Raman Spectroscopy
(University of Waterloo, 2016-09-01)Silver nanoparticle monolayers are plasmonic surfaces which primarily find use as a highly sensitive substrate for surface enhanced Raman spectroscopy (SERS), and are also found in thin film solar cells. This thesis describes ... -
A Statistical Approach to Quantifying Impact of Multiple Pulse Resistance Spot Welding Schedules on Liquid Metal Embrittlement Cracking
(University of Waterloo, 2019-04-26)Advanced high strength steels (AHSS) are advantageous for automotive applications due to their excellent strength and ductility. However, when coated with zinc for corrosion protection, these steels are susceptible to ... -
Surface Modification of Stainless Steel by Electro-Spark Deposition
(University of Waterloo, 2016-12-13)Electrospark Deposition (ESD) is a pulsed micro-welding process that is used to apply surface coatings for repair of damaged high value precision products or modify their surfaces for specific properties. The low heat ... -
TiO2 Nanomaterials: Photocatalysis and Multifunctional Water Treatment Applications
(University of Waterloo, 2017-05-03)Globalization has increased the demand for clean water sources and has increased water pollution due to increased standards of consumption, urbanization and industrial activities. This has necessitated improvements in ...