Browsing Mechanical and Mechatronics Engineering by Issue Date
Now showing items 81-100 of 1501
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Controlled mechano-chemical synthesis and properties of nanostructured hydrides in the Mg-Al-H and Mg-B-H systems
(University of Waterloo, 2007-04-02)The present work reports a study of mechano-chemical synthesis (MCS) and mechano-chemical activation synthesis (MCAS) of nanostructured hydrides in the Mg-H, Mg-Al-H and Mg-B-H systems by controlled reactive mechanical ... -
Spot Welding of Advanced High Strength Steels (AHSS)
(University of Waterloo, 2007-05-01)Efforts to reduce vehicle weight and improve crash performance have resulted in increased application of advanced high strength steels (AHSS) and a recent focus on the weldability of these alloys. Resistance spot welding ... -
Development of a Two-Parameter Model (Kmax, ΔK) for Fatigue Crack Growth Analysis
(University of Waterloo, 2007-05-15)It is generally accepted that the fatigue crack growth depends on the stress intensity factor range (ΔK) and the maximum stress intensity factor (K<sub>max</sub>). Numerous driving forces were introduced to analyze fatigue ... -
Physical Aging and Hygrothermal Response of Polycarbonate/Acrylonitrile-Butadiene-Styrene Polymer Blend
(University of Waterloo, 2007-05-16)Polycarbonate (PC) is a glassy engineering thermoplastic that has been used for decades because of its superior mechanical properties such as high toughness and stiffness, and for its general thermal stability. However, ... -
Nano Positioning Control Using Magnetostrictive Actuators
(University of Waterloo, 2007-05-18)The focus of this thesis is on the development of control systems for nano- positioning actuators using magnetostrictive materials. Magnetostrictive materials have large strokes and fast responses. However, they are ... -
Design of a Multiple-User Intelligent Feeding Robot for Elderly and Disabled
(University of Waterloo, 2007-05-22)The number of elderly people around the world is growing rapidly. This has led to an increase in the number of people who are seeking assistance and adequate service either at home or in long-term- care institutions to ... -
Development and Control of a Modular and Reconfigurable Robot with Harmonic Drive Transmission System
(University of Waterloo, 2007-05-22)This thesis presents a detailed design, calibration, and control of a modular and reconfigurable robot (MRR) system. A MRR system not only includes modular mechanical hardware, but also modular electrical hardware, control ... -
A Simplified Method For Calculating The Effective Solar Optical Properties Of a Drapery
(2007-06)The use of draperies to control solar gain through windows is common in residential and commercial buildings and their potential for reduction of building peak load and annual energy consumption is recognized to be large. ... -
Heat Transfer Analysis Of Windows With Venetian Blinds: A Comparative Study
(2007-06)The potential to reduce building load and annual energy consumption is widely recognized in the use of shading devices to control solar gain. Consequently, the ability to include and model shading layers in complex glazing ... -
Surface Design for Flank Milling
(University of Waterloo, 2007-06-18)In this dissertation, a numerical method to design a curved surface for accurately flank milling with a general tool of revolution is presented. Instead of using the ruled surface as the design surface, the flank millable ... -
Experimental Investigation of the Flow Behaviour Inside a Centrifugal Impeller Channel at Design and Off-Design Flow Rates
(University of Waterloo, 2007-06-27)An experimental study of the flow behavior inside the channels of an 8-blade backswept low specific speed impeller at design and off-design conditions is presented. The measurements took place at both the inlet and the ... -
Interaction Between Forming and the Crash Response of Aluminium Alloy S-Rails
(University of Waterloo, 2007-07-04)One of the principal energy absorbing structural components that influences the crashworthiness of a vehicle is the side-rail, which is also commonly referred to as an s-rail due to its shape that is reminiscent of an “s”. ... -
An Analysis of the Factors Influencing Electrochemical Measurements of the Condition of Reinforcing Steel in Concrete Structures
(University of Waterloo, 2007-07-16)Electrochemical assessment of the condition of the steel reinforced concrete structures is being carried out increasingly and more regularly, both in the laboratory and in the field. It is important to have enough information ... -
An Efficient Computational Method for Thermal Radiation in Participating Media
(University of Waterloo, 2007-07-26)Thermal radiation is of significant importance in a broad range of engineering applications including high-temperature and large-scale systems. Although the governing equations of thermal radiation have been known for ... -
Fabrication of a New Model Hybrid Material and Comparative Studies of its Mechanical Properties
(University of Waterloo, 2007-07-27)A novel aluminum foam-polymer hybrid material was developed by filling a 10 pore per inch (0.39 pores per millimeter), 7 % relative density Duocel® open-cell aluminum foam with a thermoplastic polymer of trade name Elvax®. ... -
Transfer of Mass and Heat in the Cathode of Polymer Electrolyte Membrane Fuel Cell
(University of Waterloo, 2007-07-30)The need for alternative sources of energy with low to zero emissions has led to the development of polymer electrolyte membrane fuel cells. PEM fuel cells are electro-chemical devices that convert chemical energy to ... -
Surface Partitioning for 3+2-axis Machining
(University of Waterloo, 2007-08-01)Despite the inbuilt advantages offered by 5-axis machining, the manufacturing industry has not widely adopted this technology due to the high cost of machines and insufficient support from CAD/CAM systems. Companies are ... -
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 ... -
Modeling and Simulation of A Hybrid Electric Vehicle Using MATLAB/Simulink and ADAMS
(University of Waterloo, 2007-09-14)As the global economy strives towards clean energy in the face of climate change, the automotive industry is researching into improving the efficiency of automobiles. Hybrid vehicle systems were proposed and have demonstrated ... -
A Fault Diagnosis System for Rotary Machinery Supported by Rolling Element Bearings
(University of Waterloo, 2007-09-22)The failure of rolling element bearings is one of the foremost causes of breakdown in rotary machinery. So far, a variety of vibration-based techniques have been developed to monitor the condition of bearings; however, the ...