Browsing Electronic Theses and Dissertations from 2009 by Discipline "Engineering : Mechanical"
Now showing items 1-20 of 20
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Cold flow improvement of biodiesel and investigation of the effect of biodiesel emulsification on diesel engine performance and emissions
(2017)Increasing concerns over environmental issues and conventional resource depletion have heightened our motivation to use clean and alternative fuels. Biodiesel is simply derived from biomass proposed as an alternative fuel ... -
Effect of glycerine and water emulsion of diesel-biodiesel blends on engine performance and emissions with EGR
(2018)The globally rising temperatures and its impact on our ecosystem and earth’s natural processes have raised an environmental concern worldwide. The pollution caused due to the burning of fossil fuels has resulted in climate ... -
Effects of various additives on regulated emissions of modern diesel engines
(2017)Increasingly strict emissions regulations along with man-made global warming has peaked interest in clean burning diesel engines. Renewable biofuels such as biodiesel are being investigated to reduce carbon monoxide (CO), ... -
An enhanced Teager Huang transform technique for bearing fault detection
(2021)Rolling element bearings are widely used in rotating machinery. Bearing health condition monitoring plays a vital role in predictive maintenance to recognize bearing faults at an early stage to prevent machinery performance ... -
Experimental characterization of a hybrid photovoltaic-thermal system with regeneration
(2018)Currently, enormous quantities of waste energy are continuously discharged into the earth’s atmosphere from various sources. For example, in a photovoltaic panel, about 85% of the incident light is either dissipated as ... -
Health condition monitoring of civil structures using time varying autoregressive models
(2017)In recent years, there have been an increasing interest in long-term monitoring of civil structures, as the research community has been alarmed by some tragic events and collapses of bridges and buildings that pointed out ... -
An intelligent system for fault diagnosis in gearboxes
(2022)Gearboxes are commonly used in rotating machinery for power transmission. A gearbox consists of shafts, gears, and bearings, each component having specific mechanical dynamics and fault properties. Reliable gearbox fault ... -
An intelligent system for temperature monitoring and brake drum cooling
(2018)Brakes convert the kinetic energy of the moving vehicle into heat energy due to friction between fixed and moving brake parts. Frequent applications of the brakes will cause overheating in brake parts, which could generate ... -
Investigation and performance characteristics of a hybrid solar photovoltaic-thermoelectric power generation renewable energy system
(2015)Increasing fossil fuel prices, electricity demand, and global concern for greenhouse gas emissions have increased interest and research of novel renewable energy technologies. Renewable solar-photovoltaic (PV) systems are ... -
Modal identification of time-varying structures using the blind source separation techniques
(2016)In last few decades, Structural Health Monitoring (SHM) has been an indispensable subject in the field of vibration engineering. With the aid of modern sensing technology, SHM has garnered significant attention towards ... -
New demodulation techniques for gearbox bearing fault detection
(2018)Nowadays, modern rotating machinery industries such as automotive, aerospace, turbo machinery, chemical plants, and power generation stations are rapidly increasing in complexity and in their everyday operations, which ... -
NOx reduction of biodiesel operated diesel engine using different techniques: (EGR, steam injection and emulsification)
(2018)The increase in world population has led to the growth in energy demand. The primary sources of this energy come from the combustion of conventional fuels, which are contributing to polluting the environment. Biodiesel ... -
Numerical analysis of discontinuous structures: static and dynamic
(2018)Discontinuous beam structures can be found in various applications such as adhesive bonded joints and piezoelectric energy harvesters. In adhesive bonded joint design, the single lap joint is commonly used and is constructed ... -
Online condition monitoring and fault detection in induction motor bearings
(2018)Induction motors (IMs) are commonly used in industry. Online IM health condition monitoring aims to recognize motor defect at its early stage to prevent motor performance degradation and reduce maintenance costs. The most ... -
Performance and emissions of diesel engines fueled by expanded polystyrene-infused biodiesel with additives
(2018)Environmental issues and conventional fossil resource depletion has directed the attention of researchers to seek clean or alternative fuels. Biodiesel was introduced as an answer to day-to-day increases in diesel consumption ... -
Simultaneous vibration suppression and energy harvesting with a non-traditional vibration absorber
(2017)The dynamic vibration absorber, or tuned mass damper, has been one of the most commonly used passive vibration control devices over the past hundred years. With an optimally designed vibration absorber, significant vibration ... -
A tunable multi-stable piezoelectric vibration energy harvester
(2021)The vibration energy harvester is intended to convert ambient environmental energy into electrical energy. It has great potential to be an alternative to the conventional battery in low-power electric devices. A traditional ... -
Vibration suppression and energy harvesting with a variant nonlinear energy sink
(2018)Vibration control is aimed to suppress or eliminate unwanted vibration to ensure proper operation of machines. On the other hand, energy harvesting intends to scavenge energy from ambient vibrations to power electronical ... -
Wind load evaluation on photovoltaic modules with flow deflector
(2020)The wind load on a photovoltaic system and the effects of adding a flow deflector around the panel are studied. The deflector is a reinforce measurement aiming to reduce the aerodynamic wind loads over the PV system, ... -
Year-round biodiesel use strategy in diesel engines in Canadian adverse cold weather conditions
(2017)The effects of climate change that have been seen at an unprecedented scale over last decade or so, have sparked intensive efforts toward the identification and development of clean, environmentally compatible, and renewable ...
