Social and Behavioral Sciences Commons^™

Police Witness Identification Images: A Geometric Morphometric Analysis, Susan Hayes, Cameron Tullberg

Faculty of Science - Papers (Archive)

Research into witness identification images typically occurs within the laboratory and involves subjective likeness and recognizability judgments. This study analyzed whether actual witness identification images systematically alter the facial shapes of the suspects described. The shape analysis tool, geometric morphometrics, was applied to 46 homologous facial landmarks displayed on 50 witness identification images and their corresponding arrest photographs, using principal component analysis and multivariate regressions. The results indicate that compared with arrest photographs, witness identification images systematically depict suspects with lowered and medially located eyebrows (p=

Spatial Modelling Of Benthic Cover Using Remote Sensing Data In The Aldabra Lagoon, Western Indian Ocean, Sarah Hamylton, Tom Spencer, A Hagan

Faculty of Science - Papers (Archive)

Spatially explicit ecological modelling was used to predict the distribution of 4 benthic components (live coral, carbonate sand, macroalgae and dead coral) inside the Aldabra lagoon, southern Seychelles, western Indian Ocean. Both classic ordinary least-squares and spatial autoregression techniques were carried out on a field data set of 774 spatially referenced records and 3 satellite remote sensing images to define an empirical relationship between local environmental conditions (water depth and water level variation) and benthic cover. This relationship was then used to generate a synoptic model of the spatial cover and distribution of each benthic component at the landscape (i.e. …

Conducting Composite Materials From The Biopolymer Kappa-Carrageenan And Carbon Nanotubes, Ali Aldalbahi, Jin Chu, Peter Feng, Marc In Het Panhuis

Faculty of Science - Papers (Archive)

Conducting composite films containing carbon nanotubes (CNTs) were prepared by using the biopolymer kappa-carrageenan (KC) as a dispersant. Rheological studies indicated that 0.5% w/v was the appropriate KC concentration for dispersing CNTs. Our results showed that multiwalled nanotubes (MWNTs) required less sonic energy than single-walled nanotubes (SWNTs) for the dispersion process to be complete. Films prepared by vacuum filtration exhibited higher conductivity and improved mechanical characteristics compared to those prepared by evaporative casting. All composite films displayed sensitivity to water vapour, but MWNT films were more sensitive than SWNT films.

Dye Regeneration And Charge Recombination In Dye-Sensitized Solar Cells With Ferrocene Derivatives As Redox Mediators, Torben Daeneke, Attila J. Mozer, Tae-Hyuk Kwon, Noel W. Duffy, Andrew B. Holmes, Udo Bach, Leone Spiccia

Faculty of Science - Papers (Archive)

Ferrocene compounds are promising redox shuttles for application in dye-sensitized solar cells (DSCs). Chemical modification of the cyclopentadienyl rings is easily achievable affording almost unlimited variation of the redox properties. This allows fine-tuning of the driving force for dye-regeneration and optimization of the energy conversion efficiency of DSCs. Herein, six ferrocene derivatives have been chosen for investigation which cover the large redox potential range of 0.85 V, by virtue of simple alkylation and halogenation of the cyclopentadienyl ring, and enable improved matching of the energy levels of the sensitizer and the electrolyte. Although the focus of this work was to …

Different Radiolabelling Methods Alter The Pharmacokinetic And Biodistribution Properties Of Plasminogen Activator Inhibitor Type 2 (Pai-2) Forms, Marie Ranson, Paula Berghofer, Kara L. Vine, Ivan Greguric, Rachael Shepherd, Andrew Katsifis

Faculty of Science - Papers (Archive)

Introduction: Tumour-associated urokinase plasminogen activator (uPA) is a critical marker of invasion and metastasis, and it is recognised as having strong prognostic relevance as well as being a therapeutic target. The specific uPA inhibitor plasminogen activator inhibitor type-2 (PAI-2, SerpinB2) specifically targets cell bound uPA and is internalised. Furthermore, preclinical studies have established the “proof-of-principle” of uPA-targeting by PAI-2-cytotoxin conjugates in human carcinoma models. However, these studies also suggest that PAI-2 is rapidly cleared via the renal system with low total dose reaching the tumour. In this study, a comparative single photon emission computed tomography (SPECT) and biodistribution (BD) analysis …

Comparisons Of Observed And Modeled Oh And Ho 2 Concentrations During The Ambient Measurement Period Of The Hoxcomp Field Campaign, Y Kanaya, A Hofzumahaus, H-P Dorn, T Brauers, H Fuchs, F Holland, F Rohrer, B Bohn, R Tillmann, Rebekah Wegener, A Wahner, Y Kajii, K Miyamoto, S Nishida, K Watanabe, A Yoshino, Dagmar C. Kubistin, M Martinez, M Rudolf, H Harder, H Berresheim, T Elste, C Plass-Dulmer, G Stange, J Kleffmann, Y Elshorbany, U Schurath

Faculty of Science - Papers (Archive)

A photochemical box model constrained by ancillary observations was used to simulate OH and HO 2 concentrations for three days of ambient observations during the HOxComp field campaign held in Jülich, Germany in July 2005. Daytime OH levels observed by four instruments were fairly well reproduced to within 33% by a base model run (Regional Atmospheric Chemistry Mechanism with updated isoprene chemistry adapted from Master Chemical Mechanism ver. 3.1) with high R 2 values (0.72-0.97) over a range of isoprene (0.3-2 ppb) and NO (0.1-10 ppb) mixing ratios. Daytime HO 2(*) levels, reconstructed from the base model results taking into …

Effects Of Atmospheric Light Scattering On Spectroscopic Observations Of Greenhouse Gases From Space: Validation Of Ppdf-Based Co 2 Retrievals From Gosat, Sergey Oshchepkov, Andrey Bril, Tatsuya Yokota, Isamu Morino, Yukio Yoshida, Tsuneo Matsunaga, Dmitry Belikov, Debra Wunch, Paul Wennberg, Geoffrey Toon, Christopher O'Dell, André Butz, Sandrine Guerlet, Austin Cogan, Hartmut Boesch, Nawo Eguchi, Nicholas Deutscher, David Griffith, Ronald Macatangay, Justus Notholt, Ralf Sussmann, Markus Rettinger, Vanessa Sherlock, John Robinson, Esko Kyro, Pauli Heikkinen, Dietrich G. Feist, Tomoo Nagahama, Nikolay Kadygrov, Shamil Maksyutov, Osamu Uchino, Hiroshi Watanabe

Faculty of Science - Papers (Archive)

This report describes a validation study of Greenhouse gases Observing Satellite (GOSAT) data processing using ground-based measurements of the Total Carbon Column Observing Network (TCCON) as reference data for column-averaged dry air mole fractions of atmospheric carbon dioxide (X CO2). We applied the photon path length probability density function method to validate X CO2 retrievals from GOSAT data obtained during 22months starting from June 2009. This method permitted direct evaluation of optical path modifications due to atmospheric light scattering that would have a negligible impact on ground-based TCCON measurements but could significantly affect gas retrievals when observing reflected sunlight from …

Clinical Dyslipidaemia Is Associated With Changes In The Lipid Composition And Inflammatory Properties Of Apolipoprotein-B-Containing Lipoproteins From Women With Type 2 Diabetes, M Ståhlman, T H. Pham, M Adiels, Todd Mitchell, Stephen J. Blanksby, B Fagerberg, K Ekross, J Boren

Faculty of Science - Papers (Archive)

Aims/hypothesis The aim of this study was to use lipidomics to determine if the lipid composition of apolipoprotein-Bcontaining lipoproteins is modified by dyslipidaemia in type 2 diabetes and if any of the identified changes potentially have biological relevance in the pathophysiology of type 2 diabetes.

Methods VLDL and LDL from normolipidaemic and dyslipidaemic type 2 diabetic women and controls were isolated and quantified with HPLC and mass spectrometry. A detailed molecular characterisation of VLDL triacylglycerols (TAG) was also performed using the novel ozone-induced dissociation method, which allowed us to distinguish vaccenic acid (C18:1 n-7) from oleic acid (C18:1 n-9) in …

Direct Detection Of Additives And Degradation Products From Polymers By Liquid Extraction Surface Analysis Employing Chip-Based Nanospray Mass Spectrometry, Martin Paine, Phillip Barker, Shane A. Maclaughlin, Todd W. Mitchell, Stephen J. Blanksby

Faculty of Science - Papers (Archive)

Rationale: Polymer-based surface coatings in outdoor applications experience accelerated degradation due to exposure to solar radiation, oxygen and atmospheric pollutants. These deleterious agents cause undesirable changes to the polymers aesthetic and mechanical properties reducing its lifetime. The use of antioxidants such as hindered amine light stabilisers (HALS) retard these degradative processes, however, mechanisms for HALS action and polymer degradation are poorly understood. Methods: Detection of the hindered amine light stabiliser (HALS) TINUVIN®123 (bis (1-octyloxy-2,2,6,6-tetramethyl-4-piperidyl) sebacate) and the polymer degradation products directly from a polyester-based coil coating was achieved by liquid extraction surface analysis (LESA) coupled to a triple quadrupole QTRAP® …

Optimization Of Colorimetric Det Technique For The In Situ, Two-Dimensional Measurement Of Iron(Ii) Distributions In Sediment Porewaters, William W. Bennett, Peter R. Teasdale, David T. Welsh, Jarad G. Panther, Dianne F. Jolley

Faculty of Science - Papers (Archive)

No abstract provided.

Coral Reefs And Reef Islands Of The Amirantes Archipelago, Western Indian Ocean, Sarah Hamylton, Tom Spencer, Annelise B. Hagan

Faculty of Science - Papers (Archive)

No abstract provided.

The Evidence-Policy Divide: A 'Critical Computational Linguistics' Approach To The Language Of 18 Health Agency Ceos From 9 Countries, Erica Bell, Bastian M. Seidel

Faculty of Science, Medicine and Health - Papers: part A

Background There is an emerging body of literature suggesting that the evidence-practice divide in health policy is complex and multi-factorial but less is known about the processes by which health policy-makers use evidence and their views about the specific features of useful evidence. This study aimed to contribute to understandings of how the most influential health policy-makers view useful evidence, in ways that help explore and question how the evidence-policy divide is understood and what research might be supported to help overcome this divide. Methods A purposeful sample of 18 national and state health agency CEOs from 9 countries was …

Practice Nurses Experiences Of Mentoring Undergraduate Nursing Students In Australian General Practice, Elizabeth J. Halcomb, Kathleen Peters, Susan Mcinnes

Faculty of Science, Medicine and Health - Papers: part A

Internationally, the delivery of health services has shifted from secondary to primary care, necessitating an exponential growth of the nursing workforce and expansion of the nursing role in general practice. This growth, and the subsequent need to develop this workforce, has created a need to expose undergraduate nurses to general practice nursing as a viable career option. Concurrently, universities are struggling to find sufficient clinical places for their undergraduate students to gain clinical experience. It is logical, therefore, to increase the number of undergraduate nursing student placements in general practice. Through qualitative research methods, this paper seeks to explore the …

Will Climate Severity Ever Lead To Climate Action? Implications For Adaptation Policy And Practice, Bastian Seidel, Erica Bell

Faculty of Science, Medicine and Health - Papers: part A

No abstract provided.

Crime Emergence And Simulation Modeling: Modeling Crime Space, Patricia Brantingham, Kathryn Wuschke, Richard Frank, Paul J. Brantingham

Criminology and Criminal Justice Faculty Publications and Presentations

This chapter explores several new modeling approaches and research findings, showing how they may be used to explore and enhance theory. There is a special emphasis on Target Choice Selection, focusing on Crime Pattern Theory and the Geometry of Crime (Brantingham and Brantingham, 1978a, 1984, 1991; Brantingham and Brantingham, 1981, 1993a, 2008). This exploration is described through a series of research examples and a case study of the target choice behavior of high repeat offenders. The goal is to explore the emergence of patterns better understood against the urban backcloths for high repeat offenders. Emphasis is in this case study …

Effect Of 6 Weeks' Consumption Of Β-Glucan-Rich Oat Products On Cholesterol Levels In Mildly Hypercholesterolaemic Overweight Adults, Karen E. Charlton, Linda C. Tapsell, Marijka J. Batterham, Jane O'Shea, Rebecca Thorne, Eleanor Beck, Susan M. Tosh

Faculty of Science, Medicine and Health - Papers: part A

Several regulatory bodies have approved a health claim on the cholesterol-lowering effects of oat β-glucan at levels of 3·0 g/d. The present study aimed to test whether 1·5 g/d β-glucan provided as ready-to-eat oat flakes was as effective in lowering cholesterol as 3·0 g/d from oats porridge. A 6-week randomised controlled trial was conducted in eighty-seven mildly hypercholesterolaemic ( ≥ 5 mmol/l and < 7·5 mmol/l) men and women assigned to one of three diet arms (25 % energy (E%) protein; 45 E% carbohydrate; 30 E% fat, at energy requirements for weight maintenance): (1) minimal β-glucan (control); (2) low-dose oat β-glucan (1·5 g β-glucan; oats low – OL) or (3) higher dose oat β-glucan (3·0 g β-glucan; oats high – OH). Changes in total cholesterol and LDL-cholesterol (LDL-C) from baseline were assessed using a linear mixed model and repeated-measures ANOVA, adjusted for weight change. Total cholesterol reduced significantly in all groups ( − 7·8 (sd 13·8) %, − 7·2 (sd 12·4) % and − 5·5 (sd 9·3) % in the OH, OL and control groups), as did LDL-C ( − 8·4 (sd 18·5) %, − 8·5 (sd 18·5) % and − 5·5 (sd 12·4) % in the OH, OL and control groups), but between-group differences were not significant. In responders only (n 60), β-glucan groups had higher reductions in LDL-C ( − 18·3 (sd 11·1) % and − 18·1 (sd 9·2) % in the OH and OL groups) compared with controls ( − 11·7 (sd 7·9) %; P = 0·044). Intakes of oat β-glucan were as effective at doses of 1·5 g/d compared with 3 g/d when provided in different food formats that delivered similar amounts of soluble β-glucan.

Hybrid Nanomembranes For High Power And High Energy Density Supercapacitors And Their Yarn Application, Jae Ah Lee, Min-Kyoon Shin, Seon Jeong Kim, Geoffrey Maxwell Spinks, Gordon G. Wallace, Raquel Ovalle-Robles, Marcio D. Lima, Mikhail E. Kozlov, Ray H. Baughman

Faculty of Science, Medicine and Health - Papers: part A

Ultrathin (thicknessnm) electrically conducting membranes can be used as electrodes for sensors, actuators, optical devices, fuel cells, scaffolds for assembling nanoparticles, and separation of biological macromolecules.1-6 Various approaches have been suggested for the fabrication of free-standing nanomembranes based on organic polymers and/or inorganic materials: spin-casting of films,7 layer-by-layer assembly of polyelectrolyte multilayers,8 cross-linking of self-assembled monolayers,9 and assembly of triblock copolymers.10,11 Loading materials such as gold nanoparticles12 or carbon nanotubes13 make membranes robust and electrically conductive. However, these methods are often time-consuming and have some limitations in terms of achievable electrical and electrochemical membrane performance as well as scale-up. Alternative …

Development Of A Spatial Data Infrastructure For Coastal Management In The Amirante Islands, Seychelles, Sarah M. Hamylton, Justin Prosper

Faculty of Science - Papers (Archive)

Spatial data infrastructures play a key role in coastal management decision making in the Seychelles. This paper describes four components of a web-based spatial data infrastructure that were developed to facilitate coastal management of the Amirante Islands in the Seychelles. The four components include: (i) the institutional arrangement for using spatial data effectively to address local management challenges, (ii) the production of island habitat maps from remotely sensed data, (iii) the tasks undertaken for promoting access to and use of this spatial data, and (iv) an example of how this data is used for a specific coastal management application in …

Energy And Water Use By Invasive Goats (Capra Hircus) In An Australian Rangeland, And A Caution Against Using Broad-Scale Allometry To Predict Species-Specific Requirements, Adam J. Munn, C E. Cooper, B Russell, T J. Dawson, S R. Mcleod, S K. Maloney

Faculty of Science - Papers (Archive)

Feral goats (Capra hircus) are ubiquitous across much of Australia's arid and semi-arid rangelands, where they compete with domestic stock, contribute to grazing pressure on fragile ecosystems, and have been implicated in the decline of several native marsupial herbivores. Understanding the success of feral goats in Australia may provide insights into management strategies for this and other invasive herbivores. It has been suggested that frugal use of energy and water contributes to the success of feral goats in Australia, but data on the energy and water use of free-ranging animals are lacking. We measured the field metabolic rate …

Evidence Of Animal Mtdna Recombination Between Divergent Populations Of The Potato Cyst Nematode Globodera Pallida, Angelique H. Hoolahan, Vivian C. Blok, Tracey Gibson, Mark Dowton

Faculty of Science - Papers (Archive)

Recombination is typically assumed to be absent in animal mitochondrial genomes (mtDNA). However, the maternal mode of inheritance means that recombinant products are indistinguishable from their progenitor molecules. The majority of studies of mtDNA recombination assess past recombination events, where patterns of recombination are inferred by comparing the mtDNA of different individuals. Few studies assess contemporary mtDNA recombination, where recombinant molecules are observed as direct mosaics of known progenitor molecules. Here we use the potato cyst nematode, Globodera pallida, to investigate past and contemporary recombination. Past recombination was assessed within and between populations of G. pallida, and contemporary …

Are Competitive Effects Of Native Species On An Invader Mediated By Water Availability?, Tanya J. Mason, Kristine French, Ken Russell

Faculty of Science - Papers (Archive)

Question: Climate change processes could influence the dynamics of biotic interactions such as plant competition, especially in response to disturbance phenomena such as invasional processes. Are competitive effects of native species on an invadermediated bywater availability?

Location: Glasshouse facility, New SouthWales, Australia.

Methods: We constructed competitive hierarchies for a representative suite of species from coastal dune communities that have been invaded by the Asteraceae shrub, bitou (Chrysanthemoides monilifera subsp. rotundata). We used a comparative phytometer approach, where the invader species was grown with or without a suite of native species in glasshouse trials. This was used to construct competition hierarchies …

Electrical And Mechanical Characteristics Of Buckypapers And Evaporative Cast Films Prepared Using Single And Multi-Walled Carbon Nanotubes And The Biopolymer Carrageenan, Ali Aldalbahi, Marc In Het Panhuis

Faculty of Science - Papers (Archive)

The electrical and mechanical characteristics of composite materials prepared using evaporative casting and vacuum filtration of carbon nanotubes (CNTs) dispersed in the biopolymer s-carrageenan (IC) are reported. It is demonstrated that the contact angle of water with films is proportional to the CNT mass and volume fraction, which is used to compare the properties of buckypapers with those of evaporative cast films. Multi-walled carbon nanotube films were found to exhibit higher conductivity values compared to those observed for single-walled carbon nanotubes composites at comparable contact angle values up to true nanotube volume fraction of 0.12. Buckypapers prepared by varying the …

Accordion Vs. Quantum Tectonics: Insights Into Continental Growth Processes From The Paleozoic Of Eastern Gondwanan, Jonathan C. Aitchison, Solomon Buckman

Faculty of Science - Papers (Archive)

The Early Paleozoic Lachlan Fold Belt of eastern Australia is widely regarded as an ancient convergent plate margin beneath which paleo-Pacific (Panthalassic) oceanic lithosphere was continuously subducted. It is cited as the type example of a retreating accretionary orogeny. However, sandstone compositions, the sedimentological nature and timing of chert accumulation and overall stratigraphic architecture are not necessarily consistent with this model. We suggest an alternative explanation for growth of Gondwanan continental margin. Oceanic lithosphere outboard of the passive Gondwana continental margin was subducted beneath an extensive intra-oceanic island arc that now crops out as an allochthonous element (Macquarie arc) within …

Oxidation Of Acid-Volatile Sulfide In Surface Sediments Increases The Release And Toxicity Of Copper To The Benthic Amphipod Melita Plumulosa, Stuart L. Simpson, Daniel Ward, David Strom, Dianne F. Jolley

Faculty of Science - Papers (Archive)

Acid-volatile sulfides (AVS) are an important metal-binding phase in sediments. For sediments that contain an excess of AVS over simultaneously extracted metal (SEM) concentrations, acute or chronic effects should not result from the metals Cd, Cu, Ni, Pb and Zn. While AVS phases may exist in surface sediments, the exposure to dissolved oxygen may oxidize the AVS and release metals to more bioavailable forms. We investigated the role of oxidation of AVS, and specifically copper sulfide phases, in surface sediments, in the toxicity to juveniles of the epibenthic amphipod, Melita plumulosa. Sediments containing known amounts of copper sulfide were prepared …

Antimalarial Alkaloids From A Bhutanese Traditional Medicinal Plant Corydalis Dubia, Phurpa Wangchuk, Paul A. Keller, Stephen G. Pyne, Anthony C. Willis, Sumalee Kamchonwongpaisan

Faculty of Science - Papers (Archive)

Ethnopharmacological relevance: Corydalis dubia is used in Bhutanese traditional medicine as a febrifuge and for treating infections in the blood, liver and bile which correlate to the signs and symptoms of malarial and microbial infections.

Aim of the study: To validate the ethnopharmacological uses of the plant and to discover potential new therapeutic drug leads. Materials and methods C. dubia was collected from Bhutan and the alkaloids were obtained using acid–base fractionation and separation by repeated column and preparative plate chromatography. The alkaloids were identified from analysis of their physiochemical and spectroscopic data and were tested for antiplasmodial, antimicrobial and …

Binaphthyl-Anchored Antibacterial Tripeptide Derivatives With Hydrophobic C-Terminal Amino Acid Variations, John Bremner, Paul A. Keller, Stephen Pyne, Mark Robertson, Kandasamy Sakthivel, Kittiya Somphol, Dean Baylis, Jonathon A Coates, John Deadman, Dharshini Jeevarajah, David I. Rhodes

Faculty of Science - Papers (Archive)

The facile synthesis of seven new dicationic tripeptide benzyl ester derivatives, with hydrophobic group variations in the C-terminal amino acid component, is described. Moderate to good activity was seen against Gram-positive bacteria in vitro. One cyclohexyl-substituted compound 2c was tested more widely and showed good potency (MIC values ranging from 2–4 μg/mL) against antibiotic-resistant strains of Staphylococcus aureus and Enterococci (VRE, VSE), and against Staphylococcus epidermidis.

Nonlinear Optical Beams In Bounded Nematic Liquid Crystal Cells, Antonmaria Minzoni, Luke W. Sciberras, Noel Prof Noel F Smyth, Annette L. Worthy

Faculty of Engineering and Information Sciences - Papers: Part A

Stable nonlinear beams, both solitary waves (nematicons) and optical vortices, can form in a nematic liquid crystal due to a balance between the nonlinear, nonlocal response of the nematic and the diffractive spreading of the light beam. The `huge' nonlinearity of a nematic liquid crystal makes it ideal for the experimental development of photonic devices as nonlinear effects occur over millimetre distances. In this work, a simple and fast method to analyse the trajectory of a nonlinear beam within a finite liquid crystal cell, based on a classical method not explored in this context, the method of images, is developed. …

Semi-Analytical Solutions For Cubic Autocatalytic Reaction-Diffusion Equations; The Effect Of A Precursor Chemical, Muteb Alharthi, Timothy Marchant, Mark Nelson

Faculty of Engineering and Information Sciences - Papers: Part A

Semi-analytical solutions for a cubic autocatalytic reaction, with linear decay and a precursor chemical, are considered. The model is coupled with diffusion and considered in a one-dimensional reactor. In this model the reactant is supplied by two mechanisms, diffusion via the cell boundaries and decay of an abundant precursor chemical present in the reactor. The Galerkin method is used to approximate the spatial structure of the reactant and autocatalyst concentrations in the reactor. Ordinary differential equations are then obtained as an approximation to the governing partial differential equations and analyzed to obtain semi-analytical results for the reaction-diffusion cell. Singularity theory …

Investigation Of The Effects Of Pipe Wall Roughness And Pipe Diameter On The Decompression Wave Speed In Natural Gas Pipelines, Cheng Lu, Guillaume Michal, Alhoush Elshahomi, Ajit R. Godbole, Phillip Venton, K K. Botros, Leigh Fletcher, B Rothwell

Faculty of Engineering and Information Sciences - Papers: Part A

The shock tube experimental results have shown clearly that the decompression wave was slowed down in a pipe with a rough inner surface relative to that in a smooth pipe under comparable conditions. In the present paper a one-dimensional dynamic simulation model, named EPDECOM, was developed to investigate the effects of pipe wall roughness and pipe diameter on the decompression wave speed. Comparison with experimental results showed that the inclusion of frictional effects led to a better prediction than that of the widely used model implemented in GASDECOM. EPDECOM simulation results showed that the effect of roughness on the decompression …

Comparing The Formability Of Aisi 304 And Aisi 202 Stainless Steel, Madeleine Du Toit, Herman G. Steyn

Faculty of Engineering and Information Sciences - Papers: Part A

The formability of AISI 202 austenitic stainless steel was compared with that of type AISI 304 stainless steel. Type 202 is a low-nickel austenitic stainless steel alloyed with manganese and nitrogen. In this study, the formability of the two grades was examined using Erichsen cupping tests and room temperature uniaxial tensile tests performed at various angles to the rolling direction. AISI 202 appears to work-harden at a slightly higher rate than AISI 304, even though the austenite in type 202 is more stable than that in 304 with respect to the formation of deformation-induced a¢ martensite. Although both grades are …