Light steel roof and wall systems under combined wind and bushfire actions. The project aims to investigate the complex behaviour of light cold-formed-steel roof and wall systems involving localized failures under the combined action of wind and bushfire using wind suction tests at elevated temperatures combined with advanced numerical modelling. It will generate new knowledge of the behaviour and strength of cold-formed-steel roof and wall systems under bushfire conditions. Expected outcomes in ....Light steel roof and wall systems under combined wind and bushfire actions. The project aims to investigate the complex behaviour of light cold-formed-steel roof and wall systems involving localized failures under the combined action of wind and bushfire using wind suction tests at elevated temperatures combined with advanced numerical modelling. It will generate new knowledge of the behaviour and strength of cold-formed-steel roof and wall systems under bushfire conditions. Expected outcomes include new design models for wind, bushfire and cold-formed-steel Standards. This will significantly improve the bushfire safety of buildings, since non-combustible steel roof and wall systems are used as building envelopes in bushfire prone areas, but are not designed to withstand recently discovered bushfire-enhanced winds.Read moreRead less
Predicting strength of porous materials. This project aims to develop a predictive theory of strength for unflawed, low-ductile porous materials – an unsolved problem in computational solid mechanics. Three-dimensional printing of lightweight, porous materials is used in industry, medicine and science. The project will develop the theory and conduct experiments on porous metallic and polymeric samples made using additive manufacturing, which require understanding and optimisation of the building ....Predicting strength of porous materials. This project aims to develop a predictive theory of strength for unflawed, low-ductile porous materials – an unsolved problem in computational solid mechanics. Three-dimensional printing of lightweight, porous materials is used in industry, medicine and science. The project will develop the theory and conduct experiments on porous metallic and polymeric samples made using additive manufacturing, which require understanding and optimisation of the building of fine scale features. Understanding strength should improve design of stronger materials, by using and extending the capabilities of three-dimensional printing. These advances will further provide a much-needed basis for a fundamental understanding of fracture in other porous materials important to society such as concrete, rocks, porous ceramics and bone implants.Read moreRead less
Australian Laureate Fellowships - Grant ID: FL160100089
Funder
Australian Research Council
Funding Amount
$2,600,796.00
Summary
In situ electron microscopy toward new materials and applications. In situ electron microscopy toward new materials and applications. This project aims to develop materials for structural and green energy applications, using spatially-resolved, dynamic in situ transmission electron microscopy to research fundamental mechanical, electrical, thermal, optical, optoelectronic and photovoltaic properties of diverse nanostructures. These techniques measure nanomaterial (one-dimensional nanotubes and n ....In situ electron microscopy toward new materials and applications. In situ electron microscopy toward new materials and applications. This project aims to develop materials for structural and green energy applications, using spatially-resolved, dynamic in situ transmission electron microscopy to research fundamental mechanical, electrical, thermal, optical, optoelectronic and photovoltaic properties of diverse nanostructures. These techniques measure nanomaterial (one-dimensional nanotubes and nanowires and two-dimensional graphene-like nanosheets) response to external stimuli, including mechanical, electrical, optical and thermal stimuli. Anticipated outcomes are new ultralight and superstrong structural composites and ‘green-energy’ nanomaterials, such as solar cells, touch panels, batteries, supercapacitors, field-effect transistors, light sensors and displays.Read moreRead less
Structure-property relationships in compositionally complex alloys. Physical metallurgy has entered a new era of compositionally complex metallic alloys that show unprecedented combinations of mechanical properties enabling the design of more energy-efficient and economically viable applications. This project aims to generate new knowledge about how locally-resolved, nano-scale atomic arrangements control macroscopic deformation behavior in these materials and develop a fundamental understanding ....Structure-property relationships in compositionally complex alloys. Physical metallurgy has entered a new era of compositionally complex metallic alloys that show unprecedented combinations of mechanical properties enabling the design of more energy-efficient and economically viable applications. This project aims to generate new knowledge about how locally-resolved, nano-scale atomic arrangements control macroscopic deformation behavior in these materials and develop a fundamental understanding of their processing-structure-fracture toughness relationships. Expected outcomes include an enhanced capacity to design materials with damage-tolerant properties superior to existing alloys from bottom up, thereby allowing for commercial benefits throughout transportation, defense, and biomedical device sectors.Read moreRead less
Next generation titanium alloys for additive manufacturing. The rise of 3D printing creates unique opportunities for Australian manufacturers to participate in high value global supply chains. However, the lack of development in high quality printable materials is stopping manufacturers from accessing the full potential of 3D printing. This project aims to develop a design strategy for the next generation of titanium metals designed for 3D printing. This project expects to improve functionality ....Next generation titanium alloys for additive manufacturing. The rise of 3D printing creates unique opportunities for Australian manufacturers to participate in high value global supply chains. However, the lack of development in high quality printable materials is stopping manufacturers from accessing the full potential of 3D printing. This project aims to develop a design strategy for the next generation of titanium metals designed for 3D printing. This project expects to improve functionality of 3D printed metals with qualities that go beyond the most demanding industry acceptance criteria. This project should provide significant benefits by creating new capabilities and improving the productivity of Australian manufacturers while lowering the cost of products for consumers.Read moreRead less
Real-time imaging of crystal strengthening mechanisms in metals. The strength limit of a metal is marked by rapid motion of crystalline defects. The associated speeds can locally approach that of sound. To probe the associated mechanisms clearly requires both spatial and temporal resolution. We propose to create a new bulk x-ray technique with an unprecedented combination of temporal and spatial resolution. We plan to exploit the technique to mediate a step change in modelling strength based on ....Real-time imaging of crystal strengthening mechanisms in metals. The strength limit of a metal is marked by rapid motion of crystalline defects. The associated speeds can locally approach that of sound. To probe the associated mechanisms clearly requires both spatial and temporal resolution. We propose to create a new bulk x-ray technique with an unprecedented combination of temporal and spatial resolution. We plan to exploit the technique to mediate a step change in modelling strength based on twinning. The formation of crystalline twins is known to dictate the strength of the light metal magnesium. A fuller understanding of the effect of twinning on strength in this metal will provide much needed confidence to implement it more widely in energy saving applications.Read moreRead less
Reliability and design of 3D printed metal structures. The project will produce a design framework for additively manufactured (3D printed) metal structures. The project will develop open source algorithms for predicting (i) mechanical properties of 3D printed metals for given printing parameters and (ii) internal stresses and distortions arising from the printing process. Underpinned by experiments on structural components and structural reliability analyses, models will be calibrated for the n ....Reliability and design of 3D printed metal structures. The project will produce a design framework for additively manufactured (3D printed) metal structures. The project will develop open source algorithms for predicting (i) mechanical properties of 3D printed metals for given printing parameters and (ii) internal stresses and distortions arising from the printing process. Underpinned by experiments on structural components and structural reliability analyses, models will be calibrated for the nonlinear analysis of 3D printed structures, and a methodology will be set out for designing 3D printed metal structures with acceptably low probability of failure. The project will enable structural engineers to safely and efficiently design 3D printed metal structures and components.Read moreRead less
Designing metallic glass structures for damage tolerance via 3D printing. This project aims to make breakthrough developments in understanding the processing-structure-property relationships that govern the fracture toughness of bulk metallic glasses produced by laser powder bed fusion additive manufacturing. The project intends to generate new knowledge on how to control fracture toughness of bulk metallic glasses via novel processing approaches that create designed glassy microstructures. Expe ....Designing metallic glass structures for damage tolerance via 3D printing. This project aims to make breakthrough developments in understanding the processing-structure-property relationships that govern the fracture toughness of bulk metallic glasses produced by laser powder bed fusion additive manufacturing. The project intends to generate new knowledge on how to control fracture toughness of bulk metallic glasses via novel processing approaches that create designed glassy microstructures. Expected outcomes will be an enhanced capacity to develop and commercialise bulk metallic glasses with mechanical properties superior to conventional metal alloys. Anticipated benefits will be improved products for the aerospace, defence, transportation, biomedical device, consumer product, and 3D printing industries.Read moreRead less
Ultrahigh strength maraging titanium alloys for additive manufacturing . This project aims to pioneer an unprecedented class of ultrahigh-strength titanium alloys for 3D printing by capitalising on both the alloy design theory of ultrahigh-strength steels and the unique capability of laser-based 3D printing. The planned research expects to significantly advance the knowledge base of advanced metallic materials and metal 3D printing via atomistic level characterisation and systematic mechanical p ....Ultrahigh strength maraging titanium alloys for additive manufacturing . This project aims to pioneer an unprecedented class of ultrahigh-strength titanium alloys for 3D printing by capitalising on both the alloy design theory of ultrahigh-strength steels and the unique capability of laser-based 3D printing. The planned research expects to significantly advance the knowledge base of advanced metallic materials and metal 3D printing via atomistic level characterisation and systematic mechanical property evaluation in relation to specifically tailored 3D printing conditions. Expected outcomes include a group of ultrahigh-strength novel titanium alloys for 3D printing and a new alloy design theory. This should provide significant benefits to the manufacturing industry to support the national economy and security.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE200101105
Funder
Australian Research Council
Funding Amount
$423,856.00
Summary
Probing the nanomechanics of single grain boundary with decorated solutes. Grain boundaries (GBs) are thermodynamically susceptible to attract solutes to reduce system energy. Elaborately manipulating the GB nanostructure and chemistry via segregation can essentially be conducive, rather than detrimental, to materials performance. However, the underlying mechanism of GB segregation and its detailed effect on material properties remain elusive due to the GB complexities in the polycrystals. Throu ....Probing the nanomechanics of single grain boundary with decorated solutes. Grain boundaries (GBs) are thermodynamically susceptible to attract solutes to reduce system energy. Elaborately manipulating the GB nanostructure and chemistry via segregation can essentially be conducive, rather than detrimental, to materials performance. However, the underlying mechanism of GB segregation and its detailed effect on material properties remain elusive due to the GB complexities in the polycrystals. Through correlative in-situ nanomechanical testing and atom probe tomography, this project aims to unravel the rationale of segregation behaviour of individual GBs and its effectiveness to enhance the material performance, and hence enable nanostructural design of advanced metallic materials with unprecedented properties.Read moreRead less