ORCID Profile
0000-0002-0994-8231
Current Organisation
Australian Nuclear Science and Technology Organisation
Does something not look right? The information on this page has been harvested from data sources that may not be up to date. We continue to work with information providers to improve coverage and quality. To report an issue, use the Feedback Form.
Research Topics
In Research Link Australia (RLA), "Research Topics" refer to ANZSRC FOR and SEO codes. These topics are either sourced from ANZSRC FOR and SEO codes listed in researchers' related grants or generated by a large language model (LLM) based on their publications.
Top 5 Research Topics
ANZSRC Field of Research (FoR)
Manufacturing Processes and Technologies (excl. Textiles) | Nanomaterials | Manufacturing Engineering | Condensed Matter Physics | Solid Mechanics | Mechanical Engineering | Metals and Alloy Materials | Electronic and Magnetic Properties of Condensed Matter; Superconductivity | Condensed Matter Imaging | Nuclear Physics |
ANZSRC Socio-Economic Objective (SEO)
Expanding Knowledge in Engineering | Nuclear Energy | Energy Transmission and Distribution (excl. Hydrogen) | Education and Training Systems not elsewhere classified | Energy Storage (excl. Hydrogen) | Expanding Knowledge in the Physical Sciences | Coated Metal and Metal-Coated Products
Related Links
Publications
Texture and Strain Experiments at OPAL
Publisher: Trans Tech Publications, Ltd.
Date: 2010
DOI: 10.4028/WWW.SCIENTIFIC.NET/MSF.638-642.2823
Abstract: In response to the development of new materials and the application of materials and components in new technologies the direct measurement, calculation and evaluation of textures and residual stresses has gained worldwide significance in recent years. Non-destructive analysis for phase specific residual stresses and textures is only possible by means of diffraction methods. The determination of global texture and the local variation of texture for ex le by inhomogeneous deformation are very important due to the coherence between the texture and the physical and mechanical properties of materials.
The influence of constitutive material models on accumulated plastic strain in finite element weld analyses
Publisher: Elsevier BV
Date: 09-2015
High-pH inclined stress corrosion cracking in Australian and Canadian gas pipeline X65 steels
Publisher: Informa UK Limited
Date: 29-01-2016
Kowari - OPAL's New Stress Diffractometer for the Engineering Community: Capabilities and First Results
Publisher: Trans Tech Publications, Ltd.
Date: 05-2010
DOI: 10.4028/WWW.SCIENTIFIC.NET/MSF.652.86
Abstract: Kowari is a neutron diffractometer at ANSTO’s research reactor OPAL. The instrument is dedicated to investigate residual strains and stresses in engineering s les or new materials. Besides its usage in engineering/strain-scanning it is more and more frequently being used for obtaining texture information related to materials science applications. In particular the possibility of using the gauge volume defining slit systems allows extracting local information from the diffraction peak, i.e. position, intensity, and width, without the need to cut the s le specimen. The instrument obtained its operating license in August 2008 to briefly describe the instruments parameters and capabilities, and give ex les of two typical applications since it went from commissioning into user mode.
Mechanical performance and residual stress of WC-Co coatings manufactured by Kinetic Metallization™
Publisher: Elsevier BV
Date: 09-2021
Multiscale mechanical performance and corrosion behaviour of plasma sprayed AlCoCrFeNi high-entropy alloy coatings
Publisher: Elsevier BV
Date: 02-2021
Evolution of a contact force network in a 2D granular assembly: an examination using neutron diffraction
Publisher: Springer Science and Business Media LLC
Date: 22-07-2021
Robust inference of two-dimensional strain fields from diffraction-based measurements
Publisher: Elsevier BV
Date: 04-2019
On the improvement of the ballistic performance of a silicon carbide tile through pre-stress: Experiments and simulations
Publisher: Elsevier BV
Date: 05-2021
Response of thin-skinned sandwich panels to contact loading with flat-ended cylindrical punches: Experiments, numerical simulations and neutron diffraction measurements
Publisher: Elsevier BV
Date: 09-2015
Kowari – OPAL’s Residual-Stress Diffractometer and its Application to Materials Science and Engineering
Publisher: Trans Tech Publications, Ltd.
Date: 04-2008
DOI: 10.4028/WWW.SCIENTIFIC.NET/AMR.41-42.439
Abstract: The Australian Nuclear Science and Technology Organisation (ANSTO) has recently started commissioning the new Australian Research Reactor OPAL that has replaced the old HIFAR reactor in January 2007. At the first stage, the new reactor will provide neutrons to several neutron scattering instruments. Among them is the residual stress diffractometer Kowari that was designed to study engineering problems related to residual stresses as well as allow material science research using neutron diffraction. We give an update on the progress of the instrument’s installation and commissioning and present an ex le to illustrate how neutron diffraction can be used to obtain information about residual stresses in a flash butt welded plate.
Evaluation of isotopic boron ( 11 B) for the fabrication of low activation Mg 11 B 2 supercondu
Publisher: Wiley
Date: 25-04-2020
DOI: 10.1111/JACE.17156
Stress distributions in compacted powders in convergent and stepped dies
Publisher: Elsevier BV
Date: 05-2016
Bragg-edge neutron transmission strain tomography for in situ loadings
Publisher: Elsevier BV
Date: 09-2016
Neutron diffraction strain tomography: Demonstration and proof-of-concept
Publisher: AIP Publishing
Date: 2020
DOI: 10.1063/1.5120422
Abstract: Recently, a number of reconstruction algorithms have been presented for residual strain tomography from Bragg-edge neutron transmission measurements. In this paper, we examine whether strain tomography can also be achieved using diffraction instruments. We outline the proposed method and develop a suitable reconstruction algorithm. This technique is demonstrated in simulation, and a proof-of-concept experiment is carried out, where the strain field in an axisymmetric s le is reconstructed and validated using conventional diffraction strain scans.
Measurement of Residual Stress in a Welded Branch Connection and Effects on Fracture Behaviour
Publisher: IOP Publishing
Date: 11-2010
Effects of cutting and specimen size on neutron measurement of residual stresses
Publisher: IOP Publishing
Date: 11-2010
Tomographic Reconstruction of Two-Dimensional Residual Strain Fields from Bragg-Edge Neutron Imaging
Publisher: American Physical Society (APS)
Date: 13-12-2018
Analysis of the residual stress and bonding mechanism in the cold spray technique using experimental and numerical methods
Publisher: Elsevier BV
Date: 08-2014
Residual Stress Buildup in Ti Components Produced by Cold Spray Additive Manufacturing (CSAM)
Publisher: Springer Science and Business Media LLC
Date: 20-05-2020
Tomographic reconstruction of triaxial strain fields from Bragg-edge neutron imaging
Publisher: American Physical Society (APS)
Date: 26-11-2019
Understanding Prosodic Focus Marking in Mandarin Chinese: Data from Children and Adults.
Publisher: Springer Science and Business Media LLC
Date: 12-04-2019
DOI: 10.1007/S10936-018-9580-9
Abstract: This study investigated whether Mandarin speakers interpret prosodic information as focus markers in a sentence-picture verification task. Previous production studies have shown that both Mandarin-speaking adults and Mandarin-speaking children mark focus by prosodic information (Ouyang and Kaiser in Lang Cogn Neurosc 30(1-2):57-72, 2014 Yang and Chen in Prosodic focus marking in Chinese four-and eight-year-olds, 2014). However, while prosodic focus marking did not seem to affect sentence comprehension in adults Mandarin-speaking children showed enhanced sentence comprehension when the sentence focus was marked by prosodic information in a previous study (Chen in Appl Psycholinguist 19(4):553-582, 1998). The present study revisited this difference between Mandarin speaking adults and children by applying a newly designed task that tested the use of prosodic information to identify the sentence focus. No evidence was obtained that Mandarin-speaking children (as young as 3 years of age) adhered more strongly to prosodic information than adults but that word order was the strongest cue for their focus interpretation. Our findings support the view that children attune to the specific means of information structure marking in their ambient language at an early age.
The Strain-Scanning Diffractometer Kowari
Publisher: Informa UK Limited
Date: 23-10-2009
Costerfield antimony-gold deposit, southeast Australia: Coupling between brittle deformation and dissolution-precipitation reactions in the Melbourne Zone
Publisher: Elsevier BV
Date: 12-2017
Residual Stresses in Cold Spray Additively Manufactured Hollow Titanium Cylinders
Publisher: Springer Science and Business Media LLC
Date: 28-04-2020
Characterization of thermally stable diamond composite material
Publisher: Trans Tech Publications, Ltd.
Date: 02-2014
DOI: 10.4028/WWW.SCIENTIFIC.NET/MSF.777.165
Abstract: Diamond composite materials are being used increasingly in cutting tools for both the mining and manufacturing industries. Except for the low pressure CVD and SPS methods, most SiC based diamond composites are produced under high pressure and high temperature (HPHT). The dominant binder phase is SiC and these composites are classed as thermally stable and are referred to as TSDC (thermally stable diamond composite). TSDC composites are produced by reactive sintering either within the diamond stability field, ~1500°C and ~5.5 GPa, or in the graphite phase field at ~1550°C and ~2 - 3.5 GPa as originally patented by Ringwood. Unlike the traditional polycrystalline diamond composite (PCD) that use Co as the binder phase and operate under restricted temperature conditions, usually less the 800°C, TSDC is Co-free allowing the operational temperature range for TSDC to be extended substantially. Extensive experimental research has been conducted at the CSIRO (Commonwealth Scientific & Industrial Research Organization) Rock Cutting Laboratory to assess the quality of TSDC products through a series of in-house tests that have been developed (abrasive wear test, compressive and shear testing) to facilitate their use in the mining industry. The focus is to prevent TSDC from premature failures in drilling and cutting operations. Since the wear resistance and performance in general, of TSDC cutting elements are strongly dependent on the phase composition, phase distribution (microstructures) and phase interaction (microstresses), detailed studies of TSDC have been undertaken using optical, SEM (with EDS and CL), Raman microscopy and radiographic imaging of macro defects as well as x-ray and neutron diffraction. Residual stress measurements were made using the neutron diffractometer Kowari at OPAL research reactor in the diamond and SiC phases in two TSDC s les. The microstresses that developed in these phases as a result of quenching from high sintering pressure and temperature and the mismatch of the thermo-mechanical properties of SiC matrix and diamond inclusions were evaluated. The matrix-inclusion concept has also been used to calculate stress partition in the phases of the TSDC products that can be directly comparable with the experimental data and give clearer interpretation of the experimental results.
High strain rate deformation of ARMOX 500T and effects on texture development using neutron diffraction techniques and SHPB testing
Publisher: Elsevier BV
Date: 2018
Force chains in monodisperse spherical particle assemblies: Three-dimensional measurements using neutrons
Publisher: American Physical Society (APS)
Date: 03-10-2014
Stress Distribution in Iron Powder during Die Compaction
Publisher: Trans Tech Publications, Ltd.
Date: 02-2014
DOI: 10.4028/WWW.SCIENTIFIC.NET/MSF.777.243
Abstract: The unique and unusual state of matter represented by granular materials has historically made it very difficult to develop models of stress distributions and was previously not able to be explored experimentally in the required detail. This paper reports the application of the neutron diffraction strain scanning method, originally developed for residual stress measurements within engineering components, to the problem of the stress distribution in granular Fe under a consolidating pressure. Strains were measured in axial, radial, circumferential and an oblique direction using the neutron strain scanning diffractometer KOWARI at ANSTO (Sydney). The full stress tensor as a function of position was able to be extracted for both straight walled, converging and stepped dies.
Residual Stress Analysis of Cold Spray Coatings Sprayed at Angles Using Through-thickness Neutron Diffraction Measurement
Publisher: Springer Science and Business Media LLC
Date: 26-08-2021
Neutron Diffraction Techniques in Granular Mechanics
Publisher: Trans Tech Publications, Ltd.
Date: 08-2017
DOI: 10.4028/WWW.SCIENTIFIC.NET/MSF.905.190
Abstract: Granular materials demonstrate unique mechanical properties stemming from their discrete nature. At large length scales granular assemblies are often viewed from the perspective of continuum theory where they show complex behaviour such as elastic and plastic anisotropy related to the load and deformation history. This complex behaviour is inextricably linked to the micromechanics of load sharing and force transmission at the particle level. At these scales, bulk stress is not shared homogeneously between particles, but rather by a network of `force chains' that form a skeleton supporting the vast majority of the applied load. The formation and failure of these structures govern much of the bulk behaviour of these materials. Neutron diffraction techniques are now providing a window into the mechanics of granular materials at both bulk and particle scales. Through a combination of tomographic neutron imaging and diffraction based strain measurement it is now possible to directly examine the stress within in idual particles in granular assemblies. Results of these experiments in two and three dimensions are presented and the outlook for this approach to studying the mechanics of granular materials is discussed.
Non-contact measurement of the stress within granular materials via neutron diffraction
Publisher: AIP
Date: 2013
DOI: 10.1063/1.4811962
Doping-induced isotopic Mg11B2 bulk superconductor for fusion application
Publisher: MDPI AG
Date: 21-03-2017
DOI: 10.3390/EN10030409
Effect of residual stress on the integrity of a branch connection
Publisher: Elsevier BV
Date: 08-2012
Residual Stresses in Cold Spray Coatings
Publisher: Springer International Publishing
Date: 09-11-2017
Experimental Measurements of Residual Stress in ARMOX 500T and Evaluation of the Resultant Ballistic Performance
Publisher: Springer Science and Business Media LLC
Date: 18-12-2019
In-situ neutron diffraction study of Pb(In 1/2 Nb 1/2 )O 3 -Pb(Mg 1/3 Nb 2/3 )O 3 -PbTiO 3 single crystals under uniaxial mechanical stress
Publisher: AIP Publishing
Date: 15-04-2012
DOI: 10.1063/1.4706563
Abstract: In this paper, we report the phase transition behavior of ternary relaxor ferroelectric single crystals of 0.25Pb(In1/2Nb1/2)O3-0.44Pb(Mg1/3Nb2/3)O3-0.31PbTiO3 subject to a uniaxial mechanical stress up to 400 MPa. The resultant in situ neutron diffraction data are interpreted in terms of the polarization rotation theory and provide direct structural evidence for the stress-induced polarization rotation pathway deduced from studies of macroscopic physical properties under stress. It is suggested that an intermediate, metastable orthorhombic phase is induced above a critical pressure of ∼75 MPa. This critical stress level appears to be unaffected by s le poling although the ground states (at zero stress) for the poled and unpoled crystals are different. The critical stress level, however, does decrease with increasing temperature. The elastic behavior of the intermediate phases is also studied based on a calculation of the associated lattice strains.
Defect Structures in Diamond Composite Coated Cemented Tungsten CarbideSubstrates
Publisher: Trans Tech Publications, Ltd.
Date: 08-2011
DOI: 10.4028/WWW.SCIENTIFIC.NET/AMR.325.339
Abstract: Variability in the abrasive wear of PCD coatings on cemented WC substrates has been investigated. Six s les of PCD coated carbides were tested in a wear testing rig. The PCD coated element was used to turn an industry standard vitrified bonded corundum grinding wheel. The wear rate was measured as the weight loss of the cutting element per cubic metre of grinding wheel machined during the test. Two grades of cutting elements were observed. One grade had wear rates between 6 and 7.3 g/m³ but of the three poor quality s les, only one valid test was made realising wear rate of ~7,800 g/m³. The microstructures of the s les were studied using SEM, X-ray imaging, neutron diffraction and XRD. SEM images revealed differences in the volume percentage of diamonds in the two grades and the XRD scans highlighted the variable distribution of the diamond phase in the coating. Estimates of the residual stresses in a good and poor quality s les indicated significantly higher compressive stresses in the good quality versus poor quality coating. These results have revealed two extremes in the wear rates of these PCD coated carbides. It is suggested that the difference in diamond content between the two grades is not sufficient to account for the 3 orders-of-magnitude difference in the observed wear rates. However, the presence of intrusive veins of carbide material in the coatings, especially around the curved cutting tip, suggested that the macroscopic defects observed in the x-ray and SEM images were the major cause of the high wear rates in the poor quality s le.
Improvement in the transport critical current density and microstructure of isotopic Mg11B2 monofilament wires by optimizing the sintering temperature
Publisher: Springer Science and Business Media LLC
Date: 08-11-2016
DOI: 10.1038/SREP36660
Abstract: Superconducting wires are widely used in fabricating magnetic coils in fusion reactors. In consideration of the stability of 11 B against neutron irradiation and lower induced radio-activation properties, MgB 2 superconductor with 11 B serving as boron source is an alternative candidate to be used in fusion reactor with severe irradiation environment. In present work, a batch of monofilament isotopic Mg 11 B 2 wires with amorphous 11 B powder as precursor were fabricated using powder-in-tube (PIT) process at different sintering temperature, and the evolution of their microstructure and corresponding superconducting properties was systemically investigated. Accordingly, the best transport critical current density ( J c ) = 2 × 10 4 A/cm 2 was obtained at 4.2 K and 5 T, which is even comparable to multi-filament Mg 11 B 2 isotope wires reported in other work. Surprisingly, transport J c vanished in our wire which was heat-treated at excessively high temperature (800 °C). Combined with microstructure observation, it was found that lots of big interconnected microcracks and voids that can isolate the MgB 2 grains formed in this whole s le, resulting in significant deterioration in inter-grain connectivity. The results can be a constructive guide in fabricating Mg 11 B 2 wires to be used as magnet coils in fusion reactor systems such as ITER-type tokamak magnet.
Evaluation of the Residual Stress in the Cold Spray Technique Using Smooth Particle Hydrodynamics Modelling and Neutron Diffraction
Publisher: Trans Tech Publications, Ltd.
Date: 02-2014
DOI: 10.4028/WWW.SCIENTIFIC.NET/MSF.777.205
Abstract: Cold spray is a material deposition technique in which powdered metals are deposited onto metallic and glass substrates as a means of improving functionality, repair or protection of the underlying substrate. The residual stress that builds up in the material during spraying is closely linked to the coating’s integrity and the bonding mechanism. Neutron diffraction residual stresses measurements were carried out at the OPAL research reactor, ANSTO, using the KOWARI strain scanner to investigate an Al-6061 s le with a fine through-thickness resolution of 0.5 mm. The experimentally determined through thickness stress profiles of the macroscopically thick coatings were used to validate FE calculations made for 100 μm thick coatings using the Smooth Particle Hydrodynamics, SPH, techniques. A pronounced plastic strain gradient was apparent in the tested and modelled s les indicative of the significant residual macro-stresses which develop in the cladding/substrate during the deposition. Around the deposited particle’s periphery (in the jetting region) the temperatures are significant, this lends itself to the presence of grain refinement at the periphery of sprayed particles and the propagation of dynamic recrystallization which is closely coupled with the thermal softening of the particle.
Kowari – The Residual-Stress Diffractometer for Engineering Applications at OPAL
Publisher: Trans Tech Publications, Ltd.
Date: 03-2008
Bragg-edge elastic strain tomography for in situ systems from energy-resolved neutron transmission imaging
Publisher: American Physical Society (APS)
Date: 09-10-2017
Related Organisations
Macquarie University Department Of Cognitive Science
Location: Australia
Australian Nuclear Science And Technology Organisation
Location: Australia
Related Funding Activities
Discovery Projects - Grant ID: DP170102324
Start Date: 2017
End Date: 12-2023
Amount: $381,000.00
Funder: Australian Research Council
View Funded ActivityLinkage Projects - Grant ID: LP160101784
Start Date: 12-2018
End Date: 12-2022
Amount: $320,000.00
Funder: Australian Research Council
View Funded ActivityIndustrial Transformation Training Centres - Grant ID: IC180100005
Start Date: 03-2019
End Date: 03-2025
Amount: $4,889,410.00
Funder: Australian Research Council
View Funded Activity