Browsing Mechanical and Mechatronics Engineering by Supervisor "Zhou, Norman"
Now showing items 1-20 of 37
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Battery-Free Water Leak Detector Design Towards High-Scale Production
(University of Waterloo, 2023-09-11)Water leaks can be a significant destructive environmental phenomenon that can result in extensive damage if not addressed promptly. Internet of Things (IoT) sensors help connect objects to the Internet for recording and ... -
Bonding of Glass-to-Glass for the Development of Ultrafast Microchip Lasers
(University of Waterloo, 2023-04-21)Direct glass-to-glass bonding is important for high-technology components in optics, microfluidics, and microelectromechanical systems applications. The focus of this research is on the design of an ultrafast, pulsed, ... -
A Comparative Experimental Study on Natural Organic Matter Degradation by Electrochemical Oxidation on Boron Doped Diamond and Mixed Metal Oxide Electrodes
(University of Waterloo, 2020-10-26)Natural organic matter (NOM) pollutants have complexified water treatment facilities and their direct methods for water disinfection. Furthermore, untreated NOM in water networks can lead to property damage in water plumbing ... -
Development and Evaluation of Ag-TiO2 Nano-photocatalysts for the removal of natural organic matter and pharmaceuticals
(University of Waterloo, 2020-01-08)Increasing the population and growing industries lead to contamination of surface and groundwater and threaten the sustainability of aquatic ecosystems and water resources. Some of the main contributors to water pollution ... -
Development of Green Synthetic Approaches for the Potential Application of Carbon and Semiconductor Nanomaterials for Emerging Applications
(University of Waterloo, 2017-12-22)The increasing interest towards the synthesis and modification of different nanomaterials is attributed to their outstanding mechanical, physical and electrical properties that allow their use in different fields. In the ... -
Dissimilar joining of Carbon/Carbon composites to Ti6Al4V and copper by reactive resistance spot welding
(University of Waterloo, 2017-08-30)This study aims to develop an innovative and user-friendly method for dissimilar joining of the carbon/carbon (C/C) composites to Ti6Al4V and copper through reactive resistance spot welding to form the hybrid structures. ... -
The effect of Electro Spark Deposition on the microstructure and mechanical properties of IN718
(University of Waterloo, 2018-09-05)The Electro Spark Deposition is a technique of continuing interest to repair or coat the surface of expensive components used in the aerospace industry. A potential use for this technique is to repair damaged turbine blades ... -
Effect of microstructure in electrospark deposition repaired conventional and additive manufactured Ni-superalloys
(University of Waterloo, 2021-04-23)The ability to extend component lifespans and improve performance through repair and coating techniques is an important area of research with widespread industrial applications. Numerous industries, including aerospace, ... -
Effect of surface condition on resistance spot welding of advanced high strength steel
(University of Waterloo, 2019-09-25)Advanced high strength automotive sheet steel (AHSS) is used in body-in-white design to reduce vehicle weight while maintaining high crashworthiness. Surface coatings applied to AHSS to protect it from oxidation and ... -
Effects of Metallic Coatings on Resistance Spot Weldability of Hot Stamping Steel
(University of Waterloo, 2017-01-10)Advanced high strength steels (AHSS) are being increasingly incorporated into automotive body structure to reduce vehicular weight without adversely affecting crashworthiness. Ultra-high strength steel (UHSS), a sub-set ... -
Electro-Spark Deposition Machine Design, Physical Controls and Parameter Effects
(University of Waterloo, 2017-01-03)Electro-spark deposition (ESD) is a micro welding process characterized by short duration high current pulses, often generated by capacitors, arcing between a conductive electrode and substrate. The high intensity, low net ... -
Electro-spark Deposition Process for Fine Structures and New Materials Coating
(University of Waterloo, 2023-08-21)The electrospark deposition (ESD) process can be used in industry to apply coatings and repair components. It uses a rod-shaped conductive material as the raw material for the electrode, which is melted by the high temperature ... -
Electrode Life and Weldability Improvement in Resistance Spot Welding of DP600
(University of Waterloo, 2017-09-06)This thesis demonstrates effective methods to improve weldability and electrode life in resistance spot welding (RSW) of zinc coated advanced high strength steel. Six kinds of electrodes were investigated to determine the ... -
Electrospark Deposited Interlayer and its Influence on Dissimilar Resistance Welding of DP600 to AA5052
(University of Waterloo, 2021-09-22)Challenges associated with the resistance spot welding of aluminum and steel must be addressed to enable wider use of low-density aluminum alloys in commercial vehicles. These challenges include the significant difference ... -
Fabrication and Evaluation of Multiple Memory Nitinol Stents for Biomedical Applications
(University of Waterloo, 2017-08-15)Cardiovascular diseases (CVD) are the leading cause of deaths worldwide. The development of stents led to a revolutionary phase in the treatment of these diseases [1]. A stent is a tubular metallic structure that is implanted ... -
Fabrication of Nanocomposite Filaments for 3D-Printing of Water Treatment Membranes
(University of Waterloo, 2018-09-07)The ever-increasing demand to provide fresh, potable water combined with the continued discharge of industrial and agricultural water pollutant chemicals in the water, require developments in conventional water and wastewater ... -
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 Liquid Metal Embrittlement in Advanced High Strength Steels
(University of Waterloo, 2020-04-17)Third-generation advanced high strength steels (AHSS) are typically given a zinc coating that provides excellent resistance to corrosion. During the resistance spot welding (RSW) process, the melted zinc coating enables ... -
Investigation of Liquid-Metal-Embrittlement Crack-path: Role of Grain Boundaries and Responsible Mechanism
(University of Waterloo, 2020-07-24)Liquid metal embrittlement (LME) has been reported in many structural materials, including steel, aluminum, nickel during hot working processes e.g. welding, brazing, heattreatment, leading to abrupt failure. In many of ... -
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 ...