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Articles 1 - 8 of 8
Full-Text Articles in Engineering
Multifunctional Coatings For Biodegradable Biomedical Devices, Sankalp Agarwal
Multifunctional Coatings For Biodegradable Biomedical Devices, Sankalp Agarwal
Doctoral
Magnesium (Mg) and its alloys have been widely explored for orthopaedic applications due to its biodegradable nature, biocompatibility and closely related mechanical properties with bone. However, rapid degradation of Mg alloys under physiological conditions is a major challenge for biomedical industries and clinicians. Amongst the various methods employed, deposited coatings have been widely favoured to enhance the corrosion resistance and compatibility of the Mg alloys. This study focused on developing multifunctional coatings on AZ31 Mg alloy having a corrosion resistant, osteoinductive and antibacterial properties for orthopaedic applications. The aim of this study was achieved through the following objectives: - Fabrication …
Dynamic Power System Training Simulation Platform And Tools For The Operational Management Of Smart Grids In The Liberalized Energy Market, Darlus France Mengapche
Dynamic Power System Training Simulation Platform And Tools For The Operational Management Of Smart Grids In The Liberalized Energy Market, Darlus France Mengapche
Doctoral
The major changes in distribution networks (medium and low voltage networks) over recent decades led to new challenges and issues in the operational management of these networks. Amongst others, issues such as load flow problems (power flow reversal, overloading of network equipment, network congestions), voltage problems (voltage limit violations, voltage increases and decreases, harmonics), power schedule management problems, network state estimation and problems with the operation of protection equipment could be encounterd. Besides, the control center staff which is confronted with new complex tasks, challenges and responsibilities, must be prepared and trained for the operational management of the future distribution …
The Study Of Reconfigurable Antennas And Associated Circuitry, Kansheng Yang [Thesis]
The Study Of Reconfigurable Antennas And Associated Circuitry, Kansheng Yang [Thesis]
Doctoral
This research focuses on the design of pattern reconfigurable antennas and the associated circuitry. The proposed pattern reconfigurable antenna designs benefit from advantages such as maximum pattern diversity and optimum switching circuits to realise 5G reconfigurable antennas. Whereas MIMO based solutions can provide increased channel capacity, they demand high computational capability and power consumption due to multiple channel processing. This prevents their use in many applications most notably in the Internet of Things where power consumption is of key importance. A switched-beam diversity allows an energy-efficient solution improving the link budget even for small low-cost battery operated IoT/sensor network applications. …
Numerical Modelling Of Red Blood Cell Structural Mechanics, Mingzhu Chen
Numerical Modelling Of Red Blood Cell Structural Mechanics, Mingzhu Chen
Doctoral
Red blood cells (RBCs) are the most abundant cellular elements in blood and their main function is the oxygen delivery. Structurally RBCs are highly deformable membrane-bounded liquid-core capsules. The deformability is critical to fulfill the functionality and is greatly affected by the RBC structural mechanics. Due to the small size, in vivo/vitro studies of the RBCs are often impossible where, being an alternative, numerical modellings stand out to be a robust approach to investigate the the RBC. In the recent years the spring-particle-based (SP) RBC modelling becomes very popular due to the simplicity and extensive modelling capability over the conventional …
Development And Validation Of A Numerical Model Of The Co2 Dry-Ice Blasting Process For Aircraft Engine Cleaning Applications, Arthur Rudek
Development And Validation Of A Numerical Model Of The Co2 Dry-Ice Blasting Process For Aircraft Engine Cleaning Applications, Arthur Rudek
Doctoral
On-wing cleaning of engine compressors for commercial aircraft is a required maintenance task which results in greater operating efficiency and lower emission rates. It is typically carried out by injection of water and detergents into the intake of an engine while the engine is being cranked by the starter. Two drawbacks of this process are the risk of icing in cold weather and the collection and treatment of the water effluent. The dry-ice blasting process, a cleaning system which uses pressurized air and CO2 dry-ice particles as cleaning agent, has been proposed as an alternative method which does not suffer …
High Sensitivity Optical Fiber Interferometric Sensors, Dejun Liu
High Sensitivity Optical Fiber Interferometric Sensors, Dejun Liu
Doctoral
Optical fiber interferometers have been widely employed and investigated for monitoring the changes in both physical and chemical parameters, with the advantages of compact size, light weight, immunity to electromagnetic interference, high sensitivity, capability to work in harsh environments and remote operation capabilities. Among the different kinds of fiber sensors based on interferometry, singlemode-multimode-singlemode (SMS) structures has attracted considerable interest due to their inherent advantages of high sensitivity, ease of fabrication and interconnection to other fiber systems and low cost. However, the challenge is that the sensitivity of the traditional SMS based fiber structure is not sufficient in some cases, …
Whispering-Gallery Mode Microsphere Resonators For Applications In Environmental Sensing, Arun Mallik
Whispering-Gallery Mode Microsphere Resonators For Applications In Environmental Sensing, Arun Mallik
Doctoral
Humidity, temperature and volatile organic compounds (VOCs), particularly ammonia, are key environmental conditions that have a major impact on human comfort, well-being and productivity, as well as on agriculture, food processing and storage, electronic manufacturing and many other industries. This results in the urgent need for the development of sensing technologies allowing rapid detection and accurate measurement of these environmental parameters. Over the past decades many electrical as well as optical sensors have been proposed and demonstrated for environmental applications. However, challenge always exists for these sensors in terms of sensitivity, selectivity, detection limit, speed of response and robustness, where …
On The Application Of Pspice For Localised Cloud Security, Paul Tobin
On The Application Of Pspice For Localised Cloud Security, Paul Tobin
Doctoral
The work reported in this thesis commenced with a review of methods for creating random binary sequences for encoding data locally by the client before storing in the Cloud. The first method reviewed investigated evolutionary computing software which generated noise-producing functions from natural noise, a highly-speculative novel idea since noise is stochastic. Nevertheless, a function was created which generated noise to seed chaos oscillators which produced random binary sequences and this research led to a circuit-based one-time pad key chaos encoder for encrypting data. Circuit-based delay chaos oscillators, initialised with sampled electronic noise, were simulated in a linear circuit simulator …