Fracture propagation through fragmented solids. This project investigates fracture propagation in heavily fractured (fragmented) solids such as rock masses, ice covers, fractured coatings, mortar-free structures. It introduces new ideas and methods and has potential to result in a breakthrough science to achieve better understanding of the fundamental processes of fracturing fragmented materials that will advance knowledge and develop technological innovations. A particular outcome of the projec ....Fracture propagation through fragmented solids. This project investigates fracture propagation in heavily fractured (fragmented) solids such as rock masses, ice covers, fractured coatings, mortar-free structures. It introduces new ideas and methods and has potential to result in a breakthrough science to achieve better understanding of the fundamental processes of fracturing fragmented materials that will advance knowledge and develop technological innovations. A particular outcome of the project will be in developing tools for designing new materials with enhanced failure resistance. Another application is in Resource Engineering and Earth and Planetary Science; the project will contribute to understanding of fracture propagation in the Earth's (and generally, planetary) crust.Read moreRead less
The durability of geopolymeric products as a function of the nanostructured gel phase. A comprehensive physical, chemical and microscopic analysis will be conducted on a series of geopolymers and Ordinary Portland Cement samples manufactured from 1964 to 2001, with a focus on the characterisation of the nanostructured gel phase. The outcomes include (1) revealing the relationship between the nanostructured gel phase and durability; (2) the discovery of reaction mechanisms in geopolymerisation an ....The durability of geopolymeric products as a function of the nanostructured gel phase. A comprehensive physical, chemical and microscopic analysis will be conducted on a series of geopolymers and Ordinary Portland Cement samples manufactured from 1964 to 2001, with a focus on the characterisation of the nanostructured gel phase. The outcomes include (1) revealing the relationship between the nanostructured gel phase and durability; (2) the discovery of reaction mechanisms in geopolymerisation and formation of OPC; (3) computer modelling of nano-scale assemblies of atoms and molecules that will give desirable properties and durability, and (4) a tailored synthesis of geopolymers with vastly improved mechanical performance and acid, fire and bacterial resistance. This scientific understanding of long term durability will greatly enhance commercial acceptance of geopolymers.Read moreRead less
ARC Research Network for Advanced Materials. Materials science/engineering is decidedly interdisciplinary, covering all science and impacting on all manufacturing industry. This network will promote interactions that do not usually occur between materials researchers and students across Australia and internationally from diverse disciplines. The scope is broadly based on advanced materials production, processing and properties but focused in four areas, involving: i) innovative structural/functi ....ARC Research Network for Advanced Materials. Materials science/engineering is decidedly interdisciplinary, covering all science and impacting on all manufacturing industry. This network will promote interactions that do not usually occur between materials researchers and students across Australia and internationally from diverse disciplines. The scope is broadly based on advanced materials production, processing and properties but focused in four areas, involving: i) innovative structural/functional materials, ii) high-tech IT/communications/sensing materials, iii) materials solutions for manufacturing, iv) materials for a sustainable Australia, and v) emerging materials technologies. Key programs will promote interdisciplinary workshops and early career researcher interactions.Read moreRead less
Microstructural Analysis and Modelling of Copper Ore Agglomerates for Heap Leaching. The efficient extraction of valuable metals from mined ore can be considered as a problem of global concern as the world's reserves of such metals quickly diminish. For low grade copper ore, heap leaching has long been recognized as the most efficient mineral recovery procedure. This project aims to apply X-ray microtomography and micromechanical modelling to quantify the critical leaching properties of ore aggl ....Microstructural Analysis and Modelling of Copper Ore Agglomerates for Heap Leaching. The efficient extraction of valuable metals from mined ore can be considered as a problem of global concern as the world's reserves of such metals quickly diminish. For low grade copper ore, heap leaching has long been recognized as the most efficient mineral recovery procedure. This project aims to apply X-ray microtomography and micromechanical modelling to quantify the critical leaching properties of ore agglomerates and to formulate optimal heap leaching strategies. This will allow for better utilization of the Australia's low grade ore reserves. The procedures and methodologies to be developed will be applicable to other types of ore including gold, uranium and nickel.Read moreRead less
Role of Reactive Particles in Explosive Emulsions. Concentrated water-in oil explosive emulsions are widely used in the minerals industry because they are cheap, easily detonated and relatively safe to handle. Their explosive energy can be significantly increased when reactive particles are introduced into the emulsion matrix. To do this, the interaction between the solid, oil, and water phases needs to be optimised. This investigation will increase our basic understanding of the physical and ch ....Role of Reactive Particles in Explosive Emulsions. Concentrated water-in oil explosive emulsions are widely used in the minerals industry because they are cheap, easily detonated and relatively safe to handle. Their explosive energy can be significantly increased when reactive particles are introduced into the emulsion matrix. To do this, the interaction between the solid, oil, and water phases needs to be optimised. This investigation will increase our basic understanding of the physical and chemical interactions that occur between the particle and the oil-water interface, and develop a more efficient explosive that can be produced continuously on a commercial scale.Read moreRead less
Energy dissipation and vibration-assisted self-healing in structures with topological interlocking. High dissipation of impact and vibration energy, vibration-assisted self-healing, high tolerance to block failure and an ease of assembly/disassembly make topological interlocking structures ideal for safety barriers, protective shields and floating structures. The theory of these phenomena will open a way for more efficient protection of infrastructure against both natural and human perpetrated i ....Energy dissipation and vibration-assisted self-healing in structures with topological interlocking. High dissipation of impact and vibration energy, vibration-assisted self-healing, high tolerance to block failure and an ease of assembly/disassembly make topological interlocking structures ideal for safety barriers, protective shields and floating structures. The theory of these phenomena will open a way for more efficient protection of infrastructure against both natural and human perpetrated impacts and for developing new methodology in constructing mobile marine bases. This constitutes the main benefit of the project. Furthermore, understanding the resonance structure of travelling waves will improve methods of non-destructive monitoring by back analysing spectral signatures of the waves.Read moreRead less
Nano-machining of diamond-like carbon (DLC): Scientific basis and technical potential. Nanotechnology will be the basis for the next post-industrial revolution, and will be the main driver of future national economies. It is crucially important that at the very least Australia is a significant niche player in those developments. The project represents an effort to promote those goals.
Testing, modelling and engineering applications of topologically interlocking structures. The CI and his international collaborator have recently proposed a new principle of design of materials and structures based on topological interlocking of constituent elements. Elements of simple shape, such as tetrahedra, are assembled in structures that keep their integrity without any binder or connectors. Unusual properties, such as high fracture toughness and damage tolerance were found. The project a ....Testing, modelling and engineering applications of topologically interlocking structures. The CI and his international collaborator have recently proposed a new principle of design of materials and structures based on topological interlocking of constituent elements. Elements of simple shape, such as tetrahedra, are assembled in structures that keep their integrity without any binder or connectors. Unusual properties, such as high fracture toughness and damage tolerance were found. The project aims at investigating the mechanical and acoustic properties of the newly discovered interlockable geometries (cubes, octahedra, dodecahedra and icosahedra) and identifying the areas of application. The project will promote the international leading role of the collaborating institutions in this novel field.Read moreRead less
A NEW CONCEPT IN DESIGN OF MATERIALS AND STRUCTURES BASED ON TOPOLOGICALLY INTERLOCKED ELEMENTS. The project aims to develop a new concept in materials design based on assemblies of interlocked elements. Interlocking is achieved topologically by special arrangements of blocks without connectors. Such assemblies can form structures possessing special mechanical properties and serve as load-bearing skeletons in composites with a binder phase providing desired functional properties. Various types o ....A NEW CONCEPT IN DESIGN OF MATERIALS AND STRUCTURES BASED ON TOPOLOGICALLY INTERLOCKED ELEMENTS. The project aims to develop a new concept in materials design based on assemblies of interlocked elements. Interlocking is achieved topologically by special arrangements of blocks without connectors. Such assemblies can form structures possessing special mechanical properties and serve as load-bearing skeletons in composites with a binder phase providing desired functional properties. Various types of interlocked assemblies will be modelled, produced and tested to determine their mechanical and acoustic properties. A range of experimental techniques tailored for these unusual assemblies will be employed. The expected outcome will be the implementation of the new design principle in multifunctional materials and structures.Read moreRead less
The Identification and Development of Strategies for Increasing Engineering Enrolments. There is a continuing nation-wide decline in high school student enrolment in higher level mathematics and science. This is already leading to a reduction in the number of students undertaking university engineering programs in Australia and the situation is expected to worsen. This project is directed toward a better understanding of the reasons for the trend and the development of strategies to reverse it. ....The Identification and Development of Strategies for Increasing Engineering Enrolments. There is a continuing nation-wide decline in high school student enrolment in higher level mathematics and science. This is already leading to a reduction in the number of students undertaking university engineering programs in Australia and the situation is expected to worsen. This project is directed toward a better understanding of the reasons for the trend and the development of strategies to reverse it. It aims to 1. Evaluate the most effective strategies that increase student's interests and understanding of engineering and increase participation in engineering studies. 2. Develop an optimised national communication strategy for promoting engineering studies to secondary students.Read moreRead less