Renewable energy generation from flow-induced vibration. Much engineering effort has been expended to eliminate vibration of marine structures. This project seeks to provide the basis for the development of tidal energy harnessing, by deliberately amplifying and harnessing vibration. This technology offers the promise of capturing clean, zero-emissions energy, while presenting no risk to marine life.
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE180100041
Funder
Australian Research Council
Funding Amount
$680,320.00
Summary
National laser-based non-destructive evaluation system. This project aims to establish the first Australian national facility for non-destructive evaluation, consisting of a three-dimensional scanning laser vibrometer, laser shearography, and an optical de-rotator, to enable full-field characterisation of the deformation and damage state of materials and structures. This solution is expected to perform rapid, broad-area scans, characterise dynamic response and wave propagation in human-engineere ....National laser-based non-destructive evaluation system. This project aims to establish the first Australian national facility for non-destructive evaluation, consisting of a three-dimensional scanning laser vibrometer, laser shearography, and an optical de-rotator, to enable full-field characterisation of the deformation and damage state of materials and structures. This solution is expected to perform rapid, broad-area scans, characterise dynamic response and wave propagation in human-engineered or natural structures, and diagnose rotating systems. This will enhance experimental capabilities, with uses spanning many industry sectors including aerospace, naval, automotive and medical.Read moreRead less
Mechanisms of sound absorption at the nanoscale. Understanding the interaction of sound with nanoscale structures will guide the creation of novel carbon nanotube materials, optimised for sound absorption, which have potential application anywhere that noise exists and needs to be attenuated. Fuel savings from reduced drag and weight in applications such as jet aircraft engines are also expected.
Development of Novel Concrete Noise Walls Incorporating Recycled Materials. This project will develop high-performance, lightweight, concrete noise walls and acoustic barriers that use recycled tyre and glass products to improve sound absorption, and address environmental problems associated with the mining of river sands, and stockpiling of waste tyre and glass products. Innovation in noise wall technology consists in developing low-carbon concrete mixes (using less cement) with a maximum amoun ....Development of Novel Concrete Noise Walls Incorporating Recycled Materials. This project will develop high-performance, lightweight, concrete noise walls and acoustic barriers that use recycled tyre and glass products to improve sound absorption, and address environmental problems associated with the mining of river sands, and stockpiling of waste tyre and glass products. Innovation in noise wall technology consists in developing low-carbon concrete mixes (using less cement) with a maximum amount of recycled product, together with reducing wall thickness, while maintaining the necessary engineering properties such as acoustics, strength, and durability. In addition to higher acoustic insulation, the novel low-carbon, lightweight, panels will improve material handling and affordability of noise barriers.Read moreRead less
Stock Identification And Discrimination Of Mulloway In Australian Waters
Funder
Fisheries Research and Development Corporation
Summary
Objectives: 1. Investigate population structure of mulloway, Argyrosomus hololepidotus, to determine whether mulloway in Australian waters belong to one large inter-breeding population throughout their range or whether 2 or more separate stocks exist.
Shark Futures: A Report Card For Australia's Sharks And Rays
Funder
Fisheries Research and Development Corporation
Funding Amount
$199,997.20
Summary
With growing concerns for the status of shark and ray populations world-wide, and increasing pressure to ensure Australia’s 320 species are effectively managed and conserved, there is a need for decision makers in government to have access to comprehensive and accurate information. One of the greatest challenges for the sharks and rays is that more than any other taxa they exist across the spectrum of interests from sustainable fisheries resources to threatened species requiring conservation. Fu ....With growing concerns for the status of shark and ray populations world-wide, and increasing pressure to ensure Australia’s 320 species are effectively managed and conserved, there is a need for decision makers in government to have access to comprehensive and accurate information. One of the greatest challenges for the sharks and rays is that more than any other taxa they exist across the spectrum of interests from sustainable fisheries resources to threatened species requiring conservation. Further complicating the assessment and management of these species is the fact that many species ranges extend beyond Australia’s territorial waters, where management is implemented differently and populations may be in very different states. Australia’s abilities both in management of its sharks and rays, and the science that underpins it, are recognised as world-leading. Despite this there remain many challenges that face our sharks and rays, but they may not always be those that are faced by other nations in our region. Currently the available information is fragmentary and difficult to access, and most assessment is focused on only a few species targeted by fisheries. The growing information needs of initiatives such as Shark-Plan 2, CITES, CMS, ESD, WTO and EPBC listing struggle to be met because of the lack of a synthesis of information across this group. Locally relevant information on the status of sharks and rays, and the synthesis of knowledge about them, will thus be critical to addressing the challenges that face this group in Australian waters. Objectives: 1. To synthesise available information on sharks and rays in Australian waters 2. To produce a report card on the status of Australia’s sharks and rays Read moreRead less
Biological Data And Model Development For Management Of Longfin Eel Fisheries
Funder
Fisheries Research and Development Corporation
Funding Amount
$339,353.00
Summary
The proposed research will provide a management model for longfin eels, and the data to support the model in Queensland. Supporting data for NSW will be supplied by a collaborative project in that state. The model will also be suitable for managing shortfin eels in Victoria, Tasmania, NSW and Queensland, given appropriate data. The research will also develop methodology for a fishery-independent sustainability indicator, which will similarly be useful for both longfin and shortfin eels.
The proposed research will provide a management model for longfin eels, and the data to support the model in Queensland. Supporting data for NSW will be supplied by a collaborative project in that state. The model will also be suitable for managing shortfin eels in Victoria, Tasmania, NSW and Queensland, given appropriate data. The research will also develop methodology for a fishery-independent sustainability indicator, which will similarly be useful for both longfin and shortfin eels.
Glass eel fishing and the aquaculture it supports are developing industries throughout southern and eastern Australia, and are potentially worth tens of millions of dollars. Prices for adult eels have also increased in recent years, encouraging the growth of this industry. However, adult stocks in Queensland and NSW appear to be declining. In addition, eels comprise a major part of stream biomass, and are probably the most important predators in many freshwater ecosystems. Significant changes to stream ecology by major reductions in eel biomass have the potential to destabilise ecosystems, facilitating invasion by exotics among other problems.
The FRDC is supporting glass eel industry development. However, sustainability of glass and adult eel fishing is not yet being addressed. Internationally, eel fisheries have not been sustained. Glass eel supplies have collapsed in Europe, Asia, and North America.
Our modelling of Queensland eel stocks demonstrates two things. Firstly, fishing of adult eels can severely reduce the number of spawning females. This is backed up by evidence from New Zealand, where the Lake Ellesmere eel fishery has seen drastic declines in the number of (particularly female) spawners (Jellyman 1995). Thus some types of adult eel fishing may damage the glass eel fishery. On the other hand, reduced or redirected adult eel fishing may significantly enhance the glass eel fishery. A management model will provide insight into these issues. Modelling of the kind proposed has not previously been published for eels, and interest has been expressed by international eel researchers.
Secondly, very little is known about longfin eel demography and population structure, knowledge which is needed for informed management of eel stocks. Some very sparse demographic data come from New Zealand, Tasmania and Victoria, but even this is compromised by eels’ great variability in growth and maturation rates between environments. Queensland may hold the majority of longfin eel biomass in Australia, but no studies have been carried out either here or in NSW. Statistically sound fishery-independent techniques are required to estimate population structure and demography for all important sectors of the population, particularly females. Fishery-dependent techniques will not work in Queensland due to the decline of the fishery. Data from NSW will provide complementary information on males, which are probably seldom found outside estuaries.
As the glass eel fishery develops and as demand for adult eels rises, information on the changing status of wild eel stocks will be required. A sustainability indicator can provide this. Such indicators are best developed as early as possible in the evolution of the fishery.
Eel life histories are complex and unique, and successful management requires a different approach from other fisheries. Successful management of glass and adult eel fisheries requires a management model supported by demographic and fishery-based data. It also requires a feedback mechanism in the form of a sustainability indicator. The proposed research will provide the first and develop methodology for the second. Objectives: 1. Estimate population parameters required for a management model. These include survival, density, age structure, growth, age and size at maturity and at recruitment to the adult eel fishery. Estimate their variability among individuals in a range of habitats. 2. Develop a management population dynamics model and use it to investigate management options. 3. Establish baseline data and sustainability indicators for long-term monitoring. 4. Assess the applicability of the above techniques to other eel fisheries in Australia, in collaboration with NSW. Distribute developed tools via the Australia and New Zealand Eel Reference Group. Read moreRead less