Characterising and suppressing vortex induced vibration. Vortex-Induced Vibration has become the design limiting factor in offshore design of elements such as the flexible pipelines that bring oil and gas to the surface. With rising oil and gas prices it is becoming more economic to explore such resources in deeper waters, which exacerbates the problem. Currently, high factors of safety must be used in the design of such pipelines because of our current lack of understanding of when the vibratio ....Characterising and suppressing vortex induced vibration. Vortex-Induced Vibration has become the design limiting factor in offshore design of elements such as the flexible pipelines that bring oil and gas to the surface. With rising oil and gas prices it is becoming more economic to explore such resources in deeper waters, which exacerbates the problem. Currently, high factors of safety must be used in the design of such pipelines because of our current lack of understanding of when the vibrations occur and their frequency and amplitude. This study will provide insight into the character of such vibrations and also look at means of suppressing them.Read moreRead less
Active control of vibration in marine riser systems. Effective control of vibrations of riser/drill rigs and vessels is an important measure of the technical quality, productivity, and environmental protection from pollution of the oil and gas industry in a country. The successful completion of this project promises to put the Australian oil and gas industry in a leading position in this area. Due to the multi-disciplinary nature of this project, the development of this section of the shipbuildi ....Active control of vibration in marine riser systems. Effective control of vibrations of riser/drill rigs and vessels is an important measure of the technical quality, productivity, and environmental protection from pollution of the oil and gas industry in a country. The successful completion of this project promises to put the Australian oil and gas industry in a leading position in this area. Due to the multi-disciplinary nature of this project, the development of this section of the shipbuilding industry will also stimulate the development in many other areas such as structure dynamics, control sensors, actuators, electronics and control.Read moreRead less
Cyclic Fatigue Mechanisms in New Lead-Free Piezoelectric Ceramics. Piezoceramics are an important component in many items in modern day Australian life. However, they present a growing environmental concern, particularly for disposal, because they contain lead oxide and must often be disposed of prematurely due to component failure. Furthermore, many key Australian industries manufacture and use piezoceramics in fields ranging from mineral exploration, to imaging to biomedical devices. This proj ....Cyclic Fatigue Mechanisms in New Lead-Free Piezoelectric Ceramics. Piezoceramics are an important component in many items in modern day Australian life. However, they present a growing environmental concern, particularly for disposal, because they contain lead oxide and must often be disposed of prematurely due to component failure. Furthermore, many key Australian industries manufacture and use piezoceramics in fields ranging from mineral exploration, to imaging to biomedical devices. This project will enable the development of lead-free alternatives to current materials and more reliable materials which will reduce the need for waste disposal.Read moreRead less
Development of Cyclic Fatigue Degradation Criteria for Piezoelectric Ceramic Components. Piezoelectric ceramics are widely used in advanced engineering applications such as actuators in the automotive industry, sonars for submarine mineral exploration and defence, and a broad range of medical devices, e.g. ultrasound probes. The reliable operational lifetime of these devices is, however, severely limited because they suffer cyclic fatigue leading to both degradation in performance and device fai ....Development of Cyclic Fatigue Degradation Criteria for Piezoelectric Ceramic Components. Piezoelectric ceramics are widely used in advanced engineering applications such as actuators in the automotive industry, sonars for submarine mineral exploration and defence, and a broad range of medical devices, e.g. ultrasound probes. The reliable operational lifetime of these devices is, however, severely limited because they suffer cyclic fatigue leading to both degradation in performance and device failure. The proposed project seeks to develop an understanding of the mechanisms of fatigue and develop a design model for engineers such that piezoelectric ceramic devices can be operated for longer periods with higher levels of reliability.Read moreRead less
Reduction of Legionnaires' Disease from Cooling Towers. Inhaled water droplets containing Legionella bacteria can cause potentially fatal Legionnaires? disease. Algae are the main source of organic matter in cooling towers on which Legionella feed. If droplets are prevented from leaving the tower they cannot cause disease. If no light enters a cooling tower no algae grow. This project aims to identify and develop designs and measurement methods for cooling towers which give low levels of drople ....Reduction of Legionnaires' Disease from Cooling Towers. Inhaled water droplets containing Legionella bacteria can cause potentially fatal Legionnaires? disease. Algae are the main source of organic matter in cooling towers on which Legionella feed. If droplets are prevented from leaving the tower they cannot cause disease. If no light enters a cooling tower no algae grow. This project aims to identify and develop designs and measurement methods for cooling towers which give low levels of droplets leaving and light entering. The new designs will reduce Legionnaires? disease infections by hundreds of times which eliminates a major urban hazard in Australia.Read moreRead less
Developing a scientific relationship between non-destructive testing ("NDT"), manufacturing acceptance levels and integrity requirements for pressure equipment welds. The acceptance of pressure equipment welds involves the interplay of three engineering fields: manufacturing acceptance standards, non-destructive testing and structural integrity analysis. Historically each of these fields has been developed separately by different research groups. In recent years these developments have acceler ....Developing a scientific relationship between non-destructive testing ("NDT"), manufacturing acceptance levels and integrity requirements for pressure equipment welds. The acceptance of pressure equipment welds involves the interplay of three engineering fields: manufacturing acceptance standards, non-destructive testing and structural integrity analysis. Historically each of these fields has been developed separately by different research groups. In recent years these developments have accelerated with new demands on failure risk, a revolution in NDT techniques and advances in structural integrity analysis. As a result there are now large inconsistencies between the various requirements which lead to serious disputes in industry.
This project seeks to redefine the appropriate relationship between the fields and develop a scientific and logical pathway for standards development.Read moreRead less
Process scalability and performance prediction of Viscous Transfer Micro Turbines for use as miniaturised power supplies. This project aims to predict the performance and scalability of viscous transfer turbines. The work will be carried out with Micromachines Ltd., a firm developing working turbines with 50 mm rotors. The goal of the research is to gain an understanding of the scaling laws for these turbines, in order to predict their performance. Viscous transfer turbines have a very simple di ....Process scalability and performance prediction of Viscous Transfer Micro Turbines for use as miniaturised power supplies. This project aims to predict the performance and scalability of viscous transfer turbines. The work will be carried out with Micromachines Ltd., a firm developing working turbines with 50 mm rotors. The goal of the research is to gain an understanding of the scaling laws for these turbines, in order to predict their performance. Viscous transfer turbines have a very simple disc construction making them ideal for manufacturing as small-scale units (with a 5 mm rotor). Small enough to replace batteries, but with a higher power output, they would provide the need for higher power output devices to replace batteries.Read moreRead less
TRANSIENT VIBRATION IN PIPELINE SYSTEMS. Although the threat of transient vibration to the safety of pipeline systems has been widely recognised, neither the coupling characteristics in transient wave propagation are clearly understood, nor accurate tools are available for analysing them. The aims of this project are to develop effective analytical and experimental methods, to study the interactions between transient waves of different types at pipe joints and bends, and to experimentally charac ....TRANSIENT VIBRATION IN PIPELINE SYSTEMS. Although the threat of transient vibration to the safety of pipeline systems has been widely recognised, neither the coupling characteristics in transient wave propagation are clearly understood, nor accurate tools are available for analysing them. The aims of this project are to develop effective analytical and experimental methods, to study the interactions between transient waves of different types at pipe joints and bends, and to experimentally characterise the transient excitations. The understanding and techniques developed from this project hold promise in providing reliable tools for safe design of complex pipeline systems in petroleum, chemical and refinery industries.Read moreRead less
Integrated Cooling Enhancement Technology for Power Electronics. This project aims to develop an unprecedented integrated cooling enhancement technology (IceTech) for silicon carbide on silicon power electronics. IceTech represents a radical departure from current failure-prone packaging solutions. The project aims to elucidate the fundamental interactions between magnetism, heat and mass transfer and apply them to cooling. In partnership with SPTS Technologies, the project then aims to develop ....Integrated Cooling Enhancement Technology for Power Electronics. This project aims to develop an unprecedented integrated cooling enhancement technology (IceTech) for silicon carbide on silicon power electronics. IceTech represents a radical departure from current failure-prone packaging solutions. The project aims to elucidate the fundamental interactions between magnetism, heat and mass transfer and apply them to cooling. In partnership with SPTS Technologies, the project then aims to develop fabrication processes for integrating microchannels and highly sensitive integrated silicon carbide temperature sensors into a chip. This novel fabrication technology allows for the implementation of the revolutionary enhanced cooling concept using two-phase flow with magnetic liquid plugs.Read moreRead less
Investigation of Thermotransport in Liquid Metal Alloys. This project aims to improve understanding of thermotransport to support the use of liquid metal allows in manufacture and energy transfer. The coupled flow of heat and mass (thermotransport) rapidly produces segregation in liquid metal alloys in a temperature gradient. This is a major problem in optimising the solidification from melts in manufacturing and for the design of liquid alloys for transfer of heat. Thermotransport is very poorl ....Investigation of Thermotransport in Liquid Metal Alloys. This project aims to improve understanding of thermotransport to support the use of liquid metal allows in manufacture and energy transfer. The coupled flow of heat and mass (thermotransport) rapidly produces segregation in liquid metal alloys in a temperature gradient. This is a major problem in optimising the solidification from melts in manufacturing and for the design of liquid alloys for transfer of heat. Thermotransport is very poorly understood. The project aims to achieve an understanding of the process through a combination of new theory, corresponding new experiments and advanced computer simulations. This would be a major advance in the area, supporting the development of new systems to prevent segregation.Read moreRead less