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Articles 1 - 30 of 58
Full-Text Articles in Social and Behavioral Sciences
Efficient Subversion Of Symmetric Encryption With Random Initialization Vector, Joon Sang Baek, Ilsun You
Efficient Subversion Of Symmetric Encryption With Random Initialization Vector, Joon Sang Baek, Ilsun You
Faculty of Engineering and Information Sciences - Papers: Part B
This paper presents an efficient subverted symmetric encryption scheme, which outputs a random initialization vector (IV). Compared with the available scheme of the same kind in the literature, our attack provides a saboteur (big brother) with much faster recovery of a key used in a victim's symmetric encryption scheme. Our result implies that care must be taken when a symmetric encryption scheme with a random IV such as randomized CBC is deployed.
Preliminary Observations Of The Effect Of Plate Roughness And Particle Size On The Determination Of Wall Friction, David B. Hastie, Wendy G. Halford
Preliminary Observations Of The Effect Of Plate Roughness And Particle Size On The Determination Of Wall Friction, David B. Hastie, Wendy G. Halford
Faculty of Engineering and Information Sciences - Papers: Part B
The determination of wall friction angle for bulk materials is vital in applications such as; bin and hopper design, conveyor transfer chutes, rail wagon unloading and any other use where bulk materials flow over a surface. It is generally accepted that the rougher the wall surface, the higher the wall friction angle. This paper will present an investigation of wall samples with various surface finishes using a translational shear tester (based on the design by Jenike). Five aluminium plates; one with a 'smooth' surface and the other four with milled grooves of varying spacing and depth to produce regular 'roughness' …
Estimating The Compression Behaviour Of Metal-Rich Clays Via A Disturbed State Concept (Dsc) Model, Ri-Dong Fan, Martin D. Liu, Yan Jun Du, Suksun Horpibulsuk
Estimating The Compression Behaviour Of Metal-Rich Clays Via A Disturbed State Concept (Dsc) Model, Ri-Dong Fan, Martin D. Liu, Yan Jun Du, Suksun Horpibulsuk
Faculty of Engineering and Information Sciences - Papers: Part B
Many studies have been made on the compression behaviour of clay exposed to metal-rich liquids (metal-rich clay) because metal contamination of clay is found worldwide and increasingly poses as an environmental risk. However, the study on predicting the compression behaviour of contaminated clay with various metal concentrations is very limited. In this paper, a general compression model of the metal-rich clays is proposed based on a general Disturbed State Concept (DSC) compression model. A simplified form of the general model is proposed, and validated based on the compression behaviour of metal-rich clays with various metal concentrations in the pore liquid. …
Certificate-Based Encryption With Keyword Search Enabling Secure Authorization In Electronic Health Record, Clementine Gritti, Willy Susilo, Thomas Plantard
Certificate-Based Encryption With Keyword Search Enabling Secure Authorization In Electronic Health Record, Clementine Gritti, Willy Susilo, Thomas Plantard
Faculty of Engineering and Information Sciences - Papers: Part B
In an e-Health scenario, we study how the practitioners are authorized when they are requesting access to medical documents containing sensitive information. Consider the following scenario. A clinician wants to access and retrieve a patient's Electronic Health Record (EHR), and this means that the clinician must acquire sufficient access right to access this document. As the EHR is within a collection of many other patients, the clinician would need to specify some requirements (such as a keyword) which match the patient's record, as well as having a valid access right. The complication begins when we do not want the server …
Characterisation Of Steelplant By-Products To Realise The Value Of Fe And Zn, Raymond Longbottom, Brian J. Monaghan, Guangqing Zhang, Sheng Chew, David J. Pinson
Characterisation Of Steelplant By-Products To Realise The Value Of Fe And Zn, Raymond Longbottom, Brian J. Monaghan, Guangqing Zhang, Sheng Chew, David J. Pinson
Faculty of Engineering and Information Sciences - Papers: Part B
Recycling of steel plant by-products is a critical area that needs careful assessment and development if the integrated steel plant is to remain environmentally and economically sustainable into the future. A research program is being embarked upon in the Australian Steel Research Hub with aims to realise the value of the by-products to the Australian Steel industry and minimise volumes being stockpiled. As a first step, key by-product streams (such as blast furnace, BOS and sinter dusts) are being evaluated and characterised so that their potential uses in-plant or elsewhere can be assessed/evaluated. These streams contain components including iron and …
Membrane Scaling And Prevention Techniques During Seawater Desalination By Air Gap Membrane Distillation, Hung Duong, Mikel C. Duke, Stephen Gray, Paul Cooper, Long D. Nghiem
Membrane Scaling And Prevention Techniques During Seawater Desalination By Air Gap Membrane Distillation, Hung Duong, Mikel C. Duke, Stephen Gray, Paul Cooper, Long D. Nghiem
Faculty of Engineering and Information Sciences - Papers: Part B
Membrane scaling and mitigation techniques during air gap membrane distillation (AGMD) of seawater were investigated. The results showed a strong influence of AGMD operating temperature on not only the process water flux but also membrane scaling and subsequent cleaning efficiency. Elevating feed/coolant temperature from 35/25 to 60/50 °C increased water flux, but also exacerbated membrane scaling of the AGMD process. Membrane scaling was more severe, and occurred at a lower water recovery (68%) when operating at 60/50 °C compared to 35/25 °C (78%) due to increased concentration polarisation effect. Operating temperature also affected the efficiency of the subsequent membrane cleaning. …
An Analytical Approximation Formula For European Option Pricing Under A New Stochastic Volatility Model With Regime-Switching, Xinjiang He, Song-Ping Zhu
An Analytical Approximation Formula For European Option Pricing Under A New Stochastic Volatility Model With Regime-Switching, Xinjiang He, Song-Ping Zhu
Faculty of Engineering and Information Sciences - Papers: Part B
In this paper, an analytical approximation formula for pricing European options is obtained under a newly proposed hybrid model with the volatility of volatility in the Heston model following a Markov chain, the adoption of which is motivated by the empirical evidence of the existence of regime-switching in real markets. We first derive the coupled PDE (partial differential equation) system that governs the European option price, which is solved with the perturbation method. It should be noted that the newly derived formula is fast and easy to implement with only normal distribution function involved, and numerical experiments confirm that our …
Modeling And Identification Of A Realistic Spiking Neural Network And Musculoskeletal Model Of The Human Arm, And An Application To The Stretch Reflex, Manish Sreenivasa, Ko Ayusawa, Yoshihiko Nakamura
Modeling And Identification Of A Realistic Spiking Neural Network And Musculoskeletal Model Of The Human Arm, And An Application To The Stretch Reflex, Manish Sreenivasa, Ko Ayusawa, Yoshihiko Nakamura
Faculty of Engineering and Information Sciences - Papers: Part B
This study develops a multi-level neuromuscular model consisting of topological pools of spiking motor, sensory and interneurons controlling a bi-muscular model of the human arm. The spiking output of motor neuron pools were used to drive muscle actions and skeletal movement via neuromuscular junctions. Feedback information from muscle spindles were relayed via monosynaptic excitatory and disynaptic inhibitory connections, to simulate spinal afferent pathways. Subject-specific model parameters were identified from human experiments by using inverse dynamics computations and optimization methods. The identified neuromuscular model was used to simulate the biceps stretch reflex and the results were compared to an independent dataset. …
Investigations Into The Identification And Control Of Outburst In Australian Underground Coal Mines, Dennis J. Black
Investigations Into The Identification And Control Of Outburst In Australian Underground Coal Mines, Dennis J. Black
Faculty of Engineering and Information Sciences - Papers: Part B
Australian coal mines currently use gas content to assess outburst risk. The gas content threshold values for each mine are indirectly determined from measurement of gas volume liberated from 150 g coal samples during Q3 residual gas content testing. It has been more than twenty (20) years since this method, known as DRI900, was presented to the Australian coal industry, and in that time there have been significant changes in mining conditions and the outburst threshold limits used at the benchmark Bulli seam mines.Current coal mining legislation in both Queensland [7] and New South Wales [6] provide little guidance in …
Interaction Forces In Rc Beams Strengthened With Nsm Frp Round Bars, Shi Shun Zhang, Tao Yu
Interaction Forces In Rc Beams Strengthened With Nsm Frp Round Bars, Shi Shun Zhang, Tao Yu
Faculty of Engineering and Information Sciences - Papers: Part B
The near-surface mounted (NSM) strengthening method has attracted an increasing worldwide attention in the last decade. Although the bond efficiency between FRP and concrete in the NSM method is much improved compared with the externally bonded (EB) FRP strengthening method, debonding failures have also been often observed in reinforced concrete (RC) beams strengthened with NSM FRP bars. In such FRP-strengthened RC beams, debonding may initiate at either of the two ends of the NSM bar (i.e. end debonding), due to the existence of large localized interaction forces between the NSM bar and concrete near the bar ends. This paper presents …
The Effect Of Binary And Ternary Mineral Combinations On The Reactivity Of A Coke Analogue, Raymond Longbottom, Brian J. Monaghan, Guangqing Zhang, Azrin A. Chowdhury, Merrick R. Mahoney, Kim Hockings, Mark H. Reid
The Effect Of Binary And Ternary Mineral Combinations On The Reactivity Of A Coke Analogue, Raymond Longbottom, Brian J. Monaghan, Guangqing Zhang, Azrin A. Chowdhury, Merrick R. Mahoney, Kim Hockings, Mark H. Reid
Faculty of Engineering and Information Sciences - Papers: Part B
The effect of the mineral matter on the reactivity of a coke analogue was examined through the addition of binary and ternary combinations of magnetite (Fe3O4), troilite (FeS) and quartz (SiO2). The use of coke at a laboratory scale has issues arising from it heterogeneity and complex nature. The coke analogue was developed to help alleviate these issues, being a laboratory tool that has a simplified carbon structure and in which the mineral content, particle size and distribution is largely controlled. The reactivity of the coke analogue with CO2 was measured using a TGA system at 1100°C under conditions similar …
Biofouling Mitigation In Forward Osmosis Using Graphene Oxide Functionalized Thin-Film Composite Membranes, Francois Perreault, Humberto Jaramillo, Ming Xie, Mercy Ude, Long D. Nghiem, Menachem Elimelech
Biofouling Mitigation In Forward Osmosis Using Graphene Oxide Functionalized Thin-Film Composite Membranes, Francois Perreault, Humberto Jaramillo, Ming Xie, Mercy Ude, Long D. Nghiem, Menachem Elimelech
Faculty of Engineering and Information Sciences - Papers: Part B
Forward osmosis (FO) is an emerging membrane process with potential applications in the treatment of highly fouling feedwaters. However, biofouling, the adhesion of microorganisms to the membrane and the subsequent formation of biofilms, remains a major limitation since antifouling membrane modifications offer limited protection against biofouling. In this study, we evaluated the use of graphene oxide (GO) for biofouling mitigation in FO. GO functionalization of thin-film composite membranes (GO-TFC) increased the surface hydrophilicity and imparted antimicrobial activity to the membrane without altering its transport properties. After 1 h of contact time, deposition and viability of Pseudomonas aeruginosa cells on GO-TFC …
Discussion: Assessment Of Smear Parameters For Use In Wick Drain Design, Richard B. Kelly, A Litwinowicz
Discussion: Assessment Of Smear Parameters For Use In Wick Drain Design, Richard B. Kelly, A Litwinowicz
Faculty of Engineering and Information Sciences - Papers: Part B
As the paper's findings (Kelly, 2014) are premised on 100% degree of consolidation being achieved, which in itself has inherent uncertainties, the consolidation aspect is worthy of closer examination. In this discussion, Consolidation (capital C) refers specifically to primary consolidation being the traditional time-dependent expulsion of water volume under pressure with progress assessed by change in pore pressure. Moreover, the Consolidation phase is most relevant to wick drain effectiveness.
Potential Of Porous Co3O4 Nanorods As Cathode Catalyst For Oxygen Reduction Reaction In Microbial Fuel Cells, Ravinder Kumar, Lakhveer Singh, A W. Zularisam, Faisal I. Hai
Potential Of Porous Co3O4 Nanorods As Cathode Catalyst For Oxygen Reduction Reaction In Microbial Fuel Cells, Ravinder Kumar, Lakhveer Singh, A W. Zularisam, Faisal I. Hai
Faculty of Engineering and Information Sciences - Papers: Part B
This study aims to investigate the potential of porous Co3O4 nanorods as the cathode catalyst for oxygen reduction reaction (ORR) in aqueous air cathode microbial fuel cells (MFCs). The porous Co3O4 nanorods were synthesized by a facile and cost-effective hydrothermal method. Three different concentrations (0.5 mg/cm2, 1 mg/cm2, and 2 mg/cm2) of Co3O4 nanorods coated on graphite electrodes were used to test its performance in MFCs. The results showed that the addition of porous Co3O4 nanorods enhanced the electrocatalytic activity and ORR …
Impacts Of Redox-Mediator Type On Trace Organic Contaminants Degradation By Laccase: Degradation Efficiency, Laccase Stability And Effluent Toxicity, Bradley Ashe, Luong Nguyen, Faisal I. Hai, Duu-Jong Lee, Jason P. Van De Merwe, Frederic Leusch, William E. Price, Long D. Nghiem
Impacts Of Redox-Mediator Type On Trace Organic Contaminants Degradation By Laccase: Degradation Efficiency, Laccase Stability And Effluent Toxicity, Bradley Ashe, Luong Nguyen, Faisal I. Hai, Duu-Jong Lee, Jason P. Van De Merwe, Frederic Leusch, William E. Price, Long D. Nghiem
Faculty of Engineering and Information Sciences - Papers: Part B
This study compares the effectiveness of seven redox-mediating compounds namely, 1-hydrozybenzotriazole (HBT), N-hydroxyphthalimide (HPI), 2,2,6,6-Tetramethyl-1-piperidinyloxy (TEMPO), violuric acid (VA), syringaldehyde (SA), vanillin (VA), and 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt (ABTS), which follow distinct oxidation pathways, for the degradation of trace organic contaminants (TrOCs). These redox-mediators were investigated for improved degradation of four TrOCs showing resistance to degradation by crude laccase from the white-rot fungus Pleurotus ostreatus. ABTS and VA achieved the highest degradation of the phenolic compounds (i.e., oxybenzone and pentachlorophenol), whereas the non-phenolic compounds (i.e., naproxen and atrazine) were best removed using VA or HBT. This implies that the …
Stress-State Monitoring Of Coal Pillars During Room And Pillar Extraction, Petr Waclawik, Jiri Ptacek, Petr Konicek, Radovan Kukutsch, Jan Nemcik
Stress-State Monitoring Of Coal Pillars During Room And Pillar Extraction, Petr Waclawik, Jiri Ptacek, Petr Konicek, Radovan Kukutsch, Jan Nemcik
Faculty of Engineering and Information Sciences - Papers: Part B
Current mining activities of the OKD mines are primarily focused on coal seams within the Karvina Formation in the Karvina sub-basin. A considerable amount of coal reserves are situated in protection pillars that lie under built-up areas. The longwall mining method is not applicable in these areas because significant deformation of the surface is not permitted. For this reason OKD is considering using alternative methods of mining to minimise subsidence. The room and pillar method has been trialed with specific coal pillars in order to minimise strata convergence. The method was implemented in the shaft protective pillar at the CSM …
Perth's Urban Rail Renaissance, Philip G. Laird
Perth's Urban Rail Renaissance, Philip G. Laird
Faculty of Engineering and Information Sciences - Papers: Part B
Over the past thirty five years, instead of being discontinued from use, Perth's urban rail network has been tripled in route length and electrified at 25,000 volts AC. The extensions include the Northern Suburbs Railway (with stage 1 opened in 1993 and this line reaching Butler in 2014), and, the 72 kilometre Perth Mandurah line opening in 2007. Integrated with a well run bus system, along with fast and frequent train services, there has been a near ten fold growth in rail patronage since 1981 when some 6.5 million passengers used the trains to 64.2 million in 2014-15. Bus patronage …
Biodegradable Polymers For Medical Applications, Anezka Lengalova, Alenka Vesel, Yakai Feng, Vitor Sencadas
Biodegradable Polymers For Medical Applications, Anezka Lengalova, Alenka Vesel, Yakai Feng, Vitor Sencadas
Faculty of Engineering and Information Sciences - Papers: Part B
Biodegradable polymers have a long history which, however, is difficult to be traced as some of them are natural products. The concept of synthetic biodegradable polymers, the topic of this special issue, was introduced in the 1980s. Since then the field has experienced a steady and stable growth as its outcomes are potentially relevant to the majority of population. This interdisciplinary field encompasses elements of materials science, biology, chemistry, medicine, tissue engineering, and others.
Trace Formulas For A Class Of Non-Fredholm Operators: A Review, Alan L. Carey, Fritz Gesztesy, Harald Grosse, Galina Levitina, Denis Potapov, F Sukochev, Dima Zanin
Trace Formulas For A Class Of Non-Fredholm Operators: A Review, Alan L. Carey, Fritz Gesztesy, Harald Grosse, Galina Levitina, Denis Potapov, F Sukochev, Dima Zanin
Faculty of Engineering and Information Sciences - Papers: Part B
Take a one-parameter family of self-adjoint Fredholm operators {A(t)}t∈R on a Hilbert space H, joining endpoints A±. There is a long history of work on the question of whether the spectral flow along this path is given by the index of the operator DA=(d/dt)+A acting in L2(R;H), where A denotes the multiplication operator (Af)(t)=A(t)f(t) for f∈dom(A). Most results are about the case where the operators A(⋅) have compact resolvent. In this article, we review what is known when these operators have some essential spectrum and describe some new results.
Caregivers Time Utilization Before And After The Introduction Of An Electronic Nursing Documentation System In A Residential Aged Care Facility, Esther Naliaka Munyisia, Ping Yu, David M. Hailey
Caregivers Time Utilization Before And After The Introduction Of An Electronic Nursing Documentation System In A Residential Aged Care Facility, Esther Naliaka Munyisia, Ping Yu, David M. Hailey
Faculty of Engineering and Information Sciences - Papers: Part B
No abstract provided.
Combining Coagulation/Miex With Biological Activated Carbon Treatment To Control Organic Fouling In The Microfiltration Of Secondary Effluent, Biplob Kumar Pramanik, Linhua Fan, Linhua Fan
Combining Coagulation/Miex With Biological Activated Carbon Treatment To Control Organic Fouling In The Microfiltration Of Secondary Effluent, Biplob Kumar Pramanik, Linhua Fan, Linhua Fan
Faculty of Engineering and Information Sciences - Papers: Part B
Coagulation, magnetic ion exchange resin (MIEX) and biological activated carbon (BAC) were examined at lab scale as standalone, and sequential pre-treatments for controlling the organic fouling of a microfiltration membrane by biologically treated secondary effluent (BTSE) using a multi-cycle approach. MIEX gave slightly greater enhancement in flux than coagulation due to greater removal of high molecular weight (MW) humic substances, although it was unable to remove high MW biopolymers. BAC treatment was considerably more effective for improving the flux than coagulation or MIEX. This was due to the biodegradation of biopolymers and/or their adsorption by the biofilm, and adsorption of …
Analysis Of Variability Of Tropical Pacific Sea Surface Temperatures, Georgina Davies, Noel A. Cressie
Analysis Of Variability Of Tropical Pacific Sea Surface Temperatures, Georgina Davies, Noel A. Cressie
Faculty of Engineering and Information Sciences - Papers: Part B
Sea surface temperature (SST) in the Pacific Ocean is a key component of many global climate models and the El Niño-Southern Oscillation (ENSO) phenomenon. We shall analyse SST for the period November 1981-December 2014. To study the temporal variability of the ENSO phenomenon, we have selected a subregion of the tropical Pacific Ocean, namely the Niño 3.4 region, as it is thought to be the area where SST anomalies indicate most clearly ENSO's influence on the global atmosphere. SST anomalies, obtained by subtracting the appropriate monthly averages from the data, are the focus of the majority of previous analyses of …
Hybrid Double-Skin Tubular Columns With A Large Rupture Strain Frp Outer Tube: Stub Column Tests, Tao Yu, Shi Shun Zhang, Le Huang, Chun Wa Chan
Hybrid Double-Skin Tubular Columns With A Large Rupture Strain Frp Outer Tube: Stub Column Tests, Tao Yu, Shi Shun Zhang, Le Huang, Chun Wa Chan
Faculty of Engineering and Information Sciences - Papers: Part B
Hybrid fiber-reinforced polymer (FRP)-concrete-steel double-skin tubular columns (DSTCs) consist of an outer tube made of FRP and an inner tube made of steel, with the space between filled with concrete. A significant amount of research has been conducted on hybrid DSTCs with an outer tube made of glass FRP (GFRP), carbon FRP (CFRP), or aramid FRP (AFRP). One important finding of the existing research is that the ductility of the column depends significantly on the rupture strain of the FRP tube, among other factors. Against this background, this paper presents an experimental study where hybrid DSTCs with a large rupture …
High Temperature Oxidation Of Indefinite Chill Roll Material Under Dry And Humid Atmospheres, Liang Hao, Zhengyi Jiang, Zhixin Chen, Dongbin Wei, Xiawei Cheng, Jingwei Zhao, Ming Luo, Li Ma, Suzhen Luo, Laizhu Jiang
High Temperature Oxidation Of Indefinite Chill Roll Material Under Dry And Humid Atmospheres, Liang Hao, Zhengyi Jiang, Zhixin Chen, Dongbin Wei, Xiawei Cheng, Jingwei Zhao, Ming Luo, Li Ma, Suzhen Luo, Laizhu Jiang
Faculty of Engineering and Information Sciences - Papers: Part B
In this paper, the isothermal oxidation of the indefinite chill (IC) roll is investigated by using a thermogravimetric analyzer (TGA) from 550 to 700 °C under dry and humid atmospheres. It is found that the oxidation kinetics follow a linear trend and the oxide scale consists of two layers after the oxidation in dry air but three layers in humid air above 600 °C. In dry air, the graphite is covered by the oxide scale above 650 °C. The water vapor accelerates the oxidation of the matrix and the graphite. The graphite is covered by the extension of the oxide …
Analysis Of The Oceanic Wave Dynamics For Generation Of Electrical Energy Using A Linear Generator, Omar Farrok, Md Rabiul Islam, Md Rafiqul Islam Sheikh
Analysis Of The Oceanic Wave Dynamics For Generation Of Electrical Energy Using A Linear Generator, Omar Farrok, Md Rabiul Islam, Md Rafiqul Islam Sheikh
Faculty of Engineering and Information Sciences - Papers: Part B
Electricity generation from oceanic wave depends on the wave dynamics and the behavior of the ocean. In this paper, a permanent magnet linear generator (PMLG) has been designed and analyzed for oceanic wave energy conversion. The proposed PMLG design is suitable for the point absorber type wave energy device. A mathematical model of ocean wave is presented to observe the output characteristics and performance of the PMLG with the variation of ocean waves. The generated voltage, current, power, applied force, magnetic flux linkage, and force components of the proposed PMLG have been presented for different sea wave conditions. The commercially …
Computing Proximal Points Of Convex Functions With Inexact Subgradients, Chayne Planiden, Warren L. Hare
Computing Proximal Points Of Convex Functions With Inexact Subgradients, Chayne Planiden, Warren L. Hare
Faculty of Engineering and Information Sciences - Papers: Part B
Locating proximal points is a component of numerous minimization algorithms. This work focuses on developing a method to find the proximal point of a convex function at a point, given an inexact oracle. Our method assumes that exact function values are at hand, but exact subgradients are either not available or not useful. We use approximate subgradients to build a model of the objective function, and prove that the method converges to the true prox-point within acceptable tolerance. The subgradient g_k used at each step k is such that the distance from g_k to the true subdifferential of the objective …
Characterization Of Angular Detection Dependence Of Prompt Gamma-Rays With Respect To The Bragg Peak In A Water Phantom Using Proton Beam Irradiations, Melek Zarifi, Susanna Guatelli, David Bolst, Brian F. Hutton, Anatoly B. Rosenfeld, Yujin Qi
Characterization Of Angular Detection Dependence Of Prompt Gamma-Rays With Respect To The Bragg Peak In A Water Phantom Using Proton Beam Irradiations, Melek Zarifi, Susanna Guatelli, David Bolst, Brian F. Hutton, Anatoly B. Rosenfeld, Yujin Qi
Faculty of Engineering and Information Sciences - Papers: Part B
The rationale for utilizing the prompt gamma (PG) signal for in vivo proton beam range verification is such that the PG fall-off distribution along the beam path is associated with the dose profile in the Bragg peak (BP) distal fall-off region. Quantitative characterization of this association, particularly with respect to the BP, is of great importance to assess its limitation and aid in the development of a clinically reliable PG imaging system to maximize PG detection. In this work we investigate the angular dependence of PG detection with respect to the BP for in vivo beam range verification in proton …
Ballistic Evaluation Of An Australian Ultra-High Hardness Steel, S Ryan, Hui Jun Li, M Edgerton, D Gallardy, S J. Cimpoeru
Ballistic Evaluation Of An Australian Ultra-High Hardness Steel, S Ryan, Hui Jun Li, M Edgerton, D Gallardy, S J. Cimpoeru
Faculty of Engineering and Information Sciences - Papers: Part B
The ballistic performance of an ultra-high hardness armour steel manufactured by Bisalloy Steels Pty Ltd, BIS UHH, has been evaluated for a range of thicknesses and obliquities against armour piercing (AP) and fragment simulating projectiles (FSPs). The performance of the material against AP projectiles was assessed against MIL-DTL-32332 and found to meet the Class 2 requirement for 7.62 mm APM2 projectiles and the Class 1 requirement for 12.7 mm APM2 projectiles. MIL-DTL-32332 specifies no performance requirement for FSPs.
Axial-Flexural Interactions Of Gfrp-Cfft Columns With And Without Reinforcing Gfrp Bars, Qasim S. Khan, M Neaz Sheikh, Muhammad N. S Hadi
Axial-Flexural Interactions Of Gfrp-Cfft Columns With And Without Reinforcing Gfrp Bars, Qasim S. Khan, M Neaz Sheikh, Muhammad N. S Hadi
Faculty of Engineering and Information Sciences - Papers: Part B
This study presents the results of an experimental program and analytical modeling for axial-flexural interactions of concrete-filled glass fiber-reinforced polymer tube (GFRP-CFFT) columns with and without reinforcing glass fiber-reinforced polymer (GFRP) bars. The experimental program included four steel RC specimens, four GFRP-CFFT specimens, and four GFRP bar-reinforced GFRP-CFFT specimens with an outer diameter of 205-206 mm and a height of 800-812 mm. The specimens were tested under concentric and 25- and 50-mm eccentric axial loads and four-point load. The experimental results showed that GFRP bar-reinforced GFRP-CFFT specimens sustained higher peak axial loads, axial and lateral deformations at peak axial load, …
Circular Dispersive Shock Waves In Colloidal Media, Amirah Azmi, Timothy R. Marchant
Circular Dispersive Shock Waves In Colloidal Media, Amirah Azmi, Timothy R. Marchant
Faculty of Engineering and Information Sciences - Papers: Part B
A dispersive shock wave (DSW), with a circular geometry, is studied in a colloidal medium. The colloidal particle interaction is based on the repulsive theoretical hard sphere model, where a series in the particle density, or packing fraction is used for the compressibility. Experimental results show that the particle interactions are temperature dependent and can be either repulsive or attractive, so the second term in the compressibility series is modified to allow for temperature dependent effects, using a power-law relationship. The governing equation is a focusing nonlinear Schrödinger-type equation with an implicit nonlinearity. The initial jump in electric field amplitude …