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Full-Text Articles in Engineering
Effects Of Membrane Fouling On N-Nitrosamine Rejection By Nanofiltration And Reverse Osmosis Membranes, Takahiro Fujioka, Stuart J. Khan, James A. Mcdonald, Rita K. Henderson, Yvan Poussade, Jorg E. Drewes, Long Nghiem
Effects Of Membrane Fouling On N-Nitrosamine Rejection By Nanofiltration And Reverse Osmosis Membranes, Takahiro Fujioka, Stuart J. Khan, James A. Mcdonald, Rita K. Henderson, Yvan Poussade, Jorg E. Drewes, Long Nghiem
Faculty of Engineering - Papers (Archive)
The impact of fouling on N-nitrosamine rejection by nanofiltration (NF) and reverse osmosis (RO) membranes was investigated in this study. Membrane fouling was simulated using tertiary treated effluent and several model fouling solutions (that contained sodium alginate, bovine serum albumin, humic acid or colloidal silica) to elucidate the changes in rejection behaviour of N-nitrosamines. In general, the rejection of N-nitrosamines increased when the membranes were fouled by tertiary effluent. The rejection of small molecular weight N-nitrosamines was most affected by membrane fouling. In particular, the rejection of N-nitrosodimethylamine (NDMA) by the ESPA2 membrane increased from 34 to 73% after membrane …
Effects Of Normal Stress On Water Flow Through A Single Roughwalled Rock Joint, Z Zhang, B Indraratna, C Kumara, Jan Anton Nemcik, W Gale
Effects Of Normal Stress On Water Flow Through A Single Roughwalled Rock Joint, Z Zhang, B Indraratna, C Kumara, Jan Anton Nemcik, W Gale
Faculty of Engineering - Papers (Archive)
Water ingress to underground openings is one of the major concerns in mining and tunnelling, because, rock joints provide natural seepage paths for groundwater flow. To study the water flow through deformable rock joints, triaxial tests with water flow were conducted under various confining stress levels (0.7-5.0 MPa). Two tests were performed on fully mated fracture specimens, and three tests were performed on a non-mated specimen where the fractured surfaces were displaced by 2.0 mm at the start of the test. The results show that the volumetric flow rate decreases with the increase in the normal stress, but the decreasing …
Effects Of Initial Static Shear On Liquefaction And Large Deformation Properties Of Loose Saturated Toyoura Sand In Undrained Cyclic Torsional Shear Tests, Gabriele Chiaro, Junichi Koseki, Takeshi Sato
Effects Of Initial Static Shear On Liquefaction And Large Deformation Properties Of Loose Saturated Toyoura Sand In Undrained Cyclic Torsional Shear Tests, Gabriele Chiaro, Junichi Koseki, Takeshi Sato
Faculty of Engineering - Papers (Archive)
This study focused on the role which static shear plays on the large deformation behavior of loose saturated sand during undrained cyclic loading. A series of undrained cyclic torsional shear tests was performed on saturated Toyoura sand specimens up to single amplitude shear strain exceeding 50%. Three types of cyclic loading patterns, i.e., stress reversal, intermediate and non-reversal, were employed by varying the initial static shear level and the cyclic shear stress amplitude. The observed types of failure could be distinguished into liquefaction (cyclic and rapid flow) and residual deformation by comparing both monotonic and cyclic undrained behavior. It was …
Reduction Of Seismic Pounding Effects Of Base-Isolated Rc Highway Bridges Using Mr Damper, M N. Sheikh, J Xiong, W H. Li
Reduction Of Seismic Pounding Effects Of Base-Isolated Rc Highway Bridges Using Mr Damper, M N. Sheikh, J Xiong, W H. Li
Faculty of Engineering - Papers (Archive)
Significant structural damages due to pounding between adjacent superstructures of multispan reinforced concrete (RC) highway bridges have been observed in past eanhquakes. Different methods have been proposed in the literature to mitigate the adverse seismic pounding effects. This paper presents an analytical investigation on the use of magnetorheological (MR) dampers in reducing seismic pounding elIects of base-isolated multi-span RC highway bridges. It has been observed that MR damper can elIectively reduce tbe seismic pounding elIect. Three control strategies (passive off, passive on, and bang bang control) of MR damper have been investigated. Although all the conlrol strategies are found to …
Development Of A Metallurgical Coke Analogue To Investigate The Effects Of Coke Mineralogy On Coke Reactivity, Raymond Longbottom, Brian J. Monaghan, Oliver Scholes, Merrick R. Mahoney
Development Of A Metallurgical Coke Analogue To Investigate The Effects Of Coke Mineralogy On Coke Reactivity, Raymond Longbottom, Brian J. Monaghan, Oliver Scholes, Merrick R. Mahoney
Faculty of Engineering - Papers (Archive)
In this study the suitability of a laboratory analogue for coke for studying the effects of minerals on the reactivity of coke was evaluated. In addition to this, the effects of different physical properties and production conditions on the reactivity of the coke analogue were also tested. The coke analogue was used for control testing of specific mineral, and to some degree maceral, effects on reactivity. Such information would improve our fundamental understanding of coke reactivity behaviour and could be used to develop more accurate predictive models of coke strength after reaction (CSR) or associated indices and coke properties. The …
Probing Exchange Bias Effects In Coo/Co Bilayers With Pillar-Like Coo Structures, David Laurence Cortie, Chin Shueh, Pei-Shi Chen, Jian-Fa Gao, Frank Klose, Jan Van Lierop, Ko-Wei Lin
Probing Exchange Bias Effects In Coo/Co Bilayers With Pillar-Like Coo Structures, David Laurence Cortie, Chin Shueh, Pei-Shi Chen, Jian-Fa Gao, Frank Klose, Jan Van Lierop, Ko-Wei Lin
Faculty of Engineering - Papers (Archive)
Exchange bias effects in CoO/Co bilayers fabricated by ion-assisted deposition were studied as a function of CoO thickness. During the deposition of the top CoO layer, pillar-like CoO structures were embedded in the underlying Co layer due to implantation of oxygen ions. The enhanced coercivity was attributed to the changes in the magnetic reversal mechanism in the ferromagnetic Co layer due to the penetration of pillar-like structures of antiferromagnetic CoO. At low temperature, we found a strong exchange bias field. Our measurements indicate that the exchange bias effect can exist in a nanocomposite system that has a disordered mixture of …
Investigating The Effects Of Pounding For Inelastic Base Isolated Adjacent Buildings Under Earthquake Excitations, Mehmet Uz, Muhammad N. S Hadi
Investigating The Effects Of Pounding For Inelastic Base Isolated Adjacent Buildings Under Earthquake Excitations, Mehmet Uz, Muhammad N. S Hadi
Faculty of Engineering - Papers (Archive)
In this study, an investigation is carried out to analyse the earthquake induced pounding be-tween two insufficiently separated base isolated buildings considering the inelastic behaviour of the struc-tures’ response. The buildings are modelled as a four-story and a three-story system to simulate the structural behaviour. The resulting systems of second order constant coefficient equations are reformulated as a system of first order ordinary differential equations and solved using the ordinary differential equation solver of MATLAB. Numerical study revealed that pounding behaviour of the buildings has considerable influence on the behaviour of the lighter building causing substantial amplification of the response …
Effects Of Membrane Fouling And Scaling On Boron Rejection By Nanofiltration And Reverse Osmosis Membranes, Kha Tu, Allan Chivas, Long Nghiem
Effects Of Membrane Fouling And Scaling On Boron Rejection By Nanofiltration And Reverse Osmosis Membranes, Kha Tu, Allan Chivas, Long Nghiem
Faculty of Engineering - Papers (Archive)
The effects of membrane fouling on the performance of nanofiltration and reverse osmosis membranes with respect to boron rejection and permeate flux were investigated in this study. A nanofiltration (NF270) membrane and a reverse osmosis (BW30) membrane were used in this investigation. Four typical membrane fouling conditions were simulated under controlled laboratory conditions in a cross-flow membrane system using four model foulants including humic acid, sodium alginate, colloidal silica and CaSO4. Amongst these model foulants, humic acid was found to increase boron rejection whereas the other foulants led to a decrease in boron rejection. Properties of foulants were found to …
The Effects Of Size And Orientation On Magnetic Properties And Exchange Bias In Co3o4 Mesoporous Nanowires, Rong Zeng, J Q Wang, Zhixin Chen, Wenxian Li, S. X. Dou
The Effects Of Size And Orientation On Magnetic Properties And Exchange Bias In Co3o4 Mesoporous Nanowires, Rong Zeng, J Q Wang, Zhixin Chen, Wenxian Li, S. X. Dou
Faculty of Engineering - Papers (Archive)
Co3O4 mesoporous nanowires with average single crystalline grain sizes of about 8 nm, 12nm, 25 nm, and 45 nm were synthesized by sintering of microwave-assisted hydrothermal processed belt-Co(OH)2 precursors at 300–500 °C for 2 h. Microstructure analysis was conducted by x-ray diffraction, x-ray photoelectron spectroscopy, Raman spectroscopy, scanning electron microscopy (SEM), field emission SEM (FESEM), transmission electron microscopy (TEM), and high resolution TEM (HRTEM) to confirm the composition, structure, and orientation in the nanowires. Systematic magnetic measurements have also been conducted on the nanowires. It was found that the size and orientation have significant effects on …
Analysis Of Microstructure Effects On Edge Crack Of Thin Strip During Cold Rolling, Haibo Xie, Zhengyi Jiang, W Y Daniel Yuen
Analysis Of Microstructure Effects On Edge Crack Of Thin Strip During Cold Rolling, Haibo Xie, Zhengyi Jiang, W Y Daniel Yuen
Faculty of Engineering - Papers (Archive)
Edge cracks in cold rolling of the thin strip affect the strip quality and productivity significantly. In this study, an experimental and mechanical investigation on microstructures has been carried out to study the edge crack formation during cold rolling of the thin strip. The effects of the feed material microstructures on the edge crack evolution were studied employing optical microscopy and scanning electron microscopy (SEM). Experimental observation indicates that fine grain occurs in hot-rolled microstructure and coarse grain is produced in ferritic rolled microstructure. Different grain sizes affect significantly the formation mechanics of the microcrack, crack initiation, and orientation of …
Effects Of Cu And Fe Doping On Raman Spectra And On The Structural And Magnetic Properties Of Ermno3, Peng Liu, Zhenxiang Cheng, Yi Du, Xiaolin Wang
Effects Of Cu And Fe Doping On Raman Spectra And On The Structural And Magnetic Properties Of Ermno3, Peng Liu, Zhenxiang Cheng, Yi Du, Xiaolin Wang
Faculty of Engineering - Papers (Archive)
Single phase ErMexMn1−xO3 (Me = Cu, Fe; 0 ≤ x ≤ 0.1) samples were synthesized by the solid state reaction method. The differences between the doping effects on the Raman spectra and on the structural, magnetic, and thermal properties of the two systems have been systematically investigated. In the ErCuxMn1−xO3 system, lattice parameter a increases with doping, while lattice parameter c decreases. It is more complicated in the ErFexMn1−xO3 system, where lattice parameter a decreases with doping, while lattice parameter c is enhanced after an …
Effects Of Polypyrrole On The Performance Of Nickel Oxide Anode Materials For Rechargeable Lithium-Ion Batteries, Nurul H. Idris, Jiazhao Wang, Shulei Chou, Chao Zhong, Md Mokhlesur Rahman, Hua-Kun Liu
Effects Of Polypyrrole On The Performance Of Nickel Oxide Anode Materials For Rechargeable Lithium-Ion Batteries, Nurul H. Idris, Jiazhao Wang, Shulei Chou, Chao Zhong, Md Mokhlesur Rahman, Hua-Kun Liu
Faculty of Engineering - Papers (Archive)
Nickel oxide–polypyrrole (NiO–PPy) composites for lithium-ion batteries were prepared by a chemical polymerization method with sodium p-toluenesulfonate as the dopant, Triton-X as the surfactant, and FeCl3 as the oxidant. The new composite material was characterized by Raman spectroscopy, thermogravimetric analysis, scanning electron microscopy, and field-emission scanning electron microscopy. Nanosize conducting PPy particles with a cauliflower-like morphology were uniformly coated onto the surface of the NiO powder. The electrochemical results were improved for the NiO–PPy composite compared with the pristine NiO. After 30 cycles, the capacities of the NiO and the NiO–PPy composite were about 119 and 436 mAh·g …
Coupling Effects Of Feed Solution Ph And Ionic Strength On The Rejection Of Boron By Nf/Ro Membranes, Kha Tu, Long Nghiem, Allan Chivas
Coupling Effects Of Feed Solution Ph And Ionic Strength On The Rejection Of Boron By Nf/Ro Membranes, Kha Tu, Long Nghiem, Allan Chivas
Faculty of Engineering - Papers (Archive)
The coupling effects of solution pH and ionic strength on boron rejection by nanofiltration (NF) and reverse osmosis (RO) membranes were investigated. Two NF membranes (namely NF270 and NF90) and three RO membranes (namely BW30, SW30 and UTC80) were used to provide a full spectrum of NF/RO membranes. The rejection of boron by all five membranes was pH-dependent. The dependency of boron rejection on the feed solution pH became much more substantial as the nominal salt (sodium or calcium) rejection value of the membrane decreased. At pH 11, boron rejections by the NF90 and the NF270 membranes were only 10% …
Nonlinear Analysis For A Single Vertical Drain Including The Effects Of Preloading Considering The Compressibility And Permeability Of The Soil, Buddhima Indraratna, Xueyu Geng, Cholachat Rujikiatkamjorn
Nonlinear Analysis For A Single Vertical Drain Including The Effects Of Preloading Considering The Compressibility And Permeability Of The Soil, Buddhima Indraratna, Xueyu Geng, Cholachat Rujikiatkamjorn
Faculty of Engineering - Papers (Archive)
In this paper, the free strain radial consolidation theory incorporating the changes of compressibility and permeability of the soil with the change in effective stress via time dependent surcharge preloading is presented. In contrast to the conventional analysis, the current study highlights the nonlinear characteristics of the soil during the consolidation process. A comparison of the nonlinear radial consolidation model, with the conventional theory and the equal strain theory i.e. constant volume compressibility, mv and constant coefficient of horizontal permeability, kh is presented. Finally, a case history at Muar coastal plain, Malaysia is analysed on the basis of the current …
The Effects Of An Applied Voltage On The Corrosion Characteristics Of Dense Mgo, Brian Joseph Monaghan, Sharon Nightingale, Qiang Dong, Michael Funcik
The Effects Of An Applied Voltage On The Corrosion Characteristics Of Dense Mgo, Brian Joseph Monaghan, Sharon Nightingale, Qiang Dong, Michael Funcik
Faculty of Engineering - Papers (Archive)
In a recent investigation Mills and Riaz [1] showed that industrial oxide refractory corrosion by liquid oxides could be changed by the application of a small voltage across the liquid oxide-refractory interface. They ex-plained their result in terms of penetration of the refractory pores with liquid oxide. Their analysis of the corrosion effect was to some degree limited by the use of an industrial refractory material in the study. Fur-ther, it was not clear whether their findings were limited to solely industrial refractories or had wider ranging application to more dense ceramic type solid oxide systems. In this study, a …
Strategy Of Water Pollution Prevention In Taihu Lake And Its Effects Analysis, Shuqing Yang, P.W. Liu
Strategy Of Water Pollution Prevention In Taihu Lake And Its Effects Analysis, Shuqing Yang, P.W. Liu
Faculty of Engineering - Papers (Archive)
Taihu Lake, the third largest freshwater lake in China, is located in the Chanjiang Delta of the Yangtze River. Its waters are used by agriculture, industry and as major drinking water for several cities including Shanghai and Wuxi. The lake also is important for tourism, aquaculture and flood control. Taihu Lake and its surrounding areas are facing three major water-related threats: deteriorating water quality with inflow and runoff from its watershed; flooding during the rainy seasons; and water shortages during drier months. Noxious algae blooms are occurring with increasing frequency and water quality continues to decline. Remedial actions implemented to …
Effects Of Cobalt Doping And Phase Diagrams Of Lfe1-Xcox Aso (L=La And Sm), Cao Wang, Y K. Li, Z W. Zhu, S Jiang, X Lin, Y K. Luo, S Chi, L J. Li, Z Ren, M He, H Chen, Y T. Wang, Q Tao, G H. Cao, Z A. Xu
Effects Of Cobalt Doping And Phase Diagrams Of Lfe1-Xcox Aso (L=La And Sm), Cao Wang, Y K. Li, Z W. Zhu, S Jiang, X Lin, Y K. Luo, S Chi, L J. Li, Z Ren, M He, H Chen, Y T. Wang, Q Tao, G H. Cao, Z A. Xu
Faculty of Engineering - Papers (Archive)
The superconducting phase diagrams have been established by the measurements of electrical resistivity, magnetic susceptibility, and thermopower in cobalt-doped LFeAsO (L=La and Sm) systems. It is shown that the antiferromagnetic spin-density-wave order in the parent compounds is rapidly suppressed by Co doping, and superconductivity emerges at x=0.025 and 0.05 in LaFe1−xCoxAsO and SmFe1−xCoxAsO, respectively. The Tc(x) curves of both systems are domelike, with a maximum Tc of 13 K at x=0.075 in LaFe1−xCoxAsO and 17.2 K at x=0.1 in SmFe1−xCoxAsO. Thermopower measurement shows dominant electron-type transport for the Co-doped samples, in accordance with itinerant character of Co 3d electrons. We …
The Performance Of Rail Track Incorporating The Effects Of Ballast Breakage, Confining Pressure And Geosynthetic Reinforcement, Buddhima Indraratna, S Nimbalkar, D Christie
The Performance Of Rail Track Incorporating The Effects Of Ballast Breakage, Confining Pressure And Geosynthetic Reinforcement, Buddhima Indraratna, S Nimbalkar, D Christie
Faculty of Engineering - Papers (Archive)
Rail tracks are often placed on ballast which offers the desirable resiliency to cyclic loads. However ballasted beds need periodic maintenance due to deformation and degradation associated with breakage and fouling. A proper understanding of load transfer mechanisms and their effect on ballast breakage are prerequisites for minimizing maintenance costs. Recycled ballast is a cheaper and environmentally viable option but its strength characteristics need to be investigated beforehand. This paper demonstrates the analytical, numerical and laboratory investigations carried out to investigate the geotechnical behavior of ballast, including shear strength, ballast breakage, and confining pressure. The potential use of geosynthetics for …
Packaging Effects On Radfet Sensors For High Energy Physics Experiments, Julien Mekki, Laurent Dusseau, Maurice Glaser, Susanna Guatelli, Michael Moll, Maria Grazia Pia, Federico Ravotti
Packaging Effects On Radfet Sensors For High Energy Physics Experiments, Julien Mekki, Laurent Dusseau, Maurice Glaser, Susanna Guatelli, Michael Moll, Maria Grazia Pia, Federico Ravotti
Faculty of Engineering - Papers (Archive)
RadFETs in customized chip carrier packages are installed in the LHC Experiments as radiation monitors. The package influence on the dose measurement in the complex LHC radiation environment is evaluated using Geant4 simulations and experimental data.
The Effects Of Shear Stress On The Lubrication Performances Of Oil Film Of Large-Scale Mill Bearing, Zhengyi Jiang, A K. Tieu, Jianmei Wang, Q.X. Huang
The Effects Of Shear Stress On The Lubrication Performances Of Oil Film Of Large-Scale Mill Bearing, Zhengyi Jiang, A K. Tieu, Jianmei Wang, Q.X. Huang
Faculty of Engineering - Papers (Archive)
A new coupling numerical algorithm has been developed to integrate Finite Difference Method (FDM) with Boundary Element Method (BEM) to analyze shear performance of oil film by iteratively solving a series of equations such as the film flow velocity and shear stress equations for contact bodies in bearing system. With consideration of the variations of viscosity and density with pressure and temperature, the effects of shear stress of oil film layers on lubrication performance of contact surfaces under different loadcases were discussed. Moreover, Germany-made Anton Paar MRD (Magnetic Rheologic Device) was used to determine the relationship between the viscosity and …
Raman Study Of Element Doping Effects On The Superconductivity Of Mgb2, Wenxian Li, Yongqing Li, R H. Chen, Rong Zeng, S. X. Dou, M Y. Zhu, H M. Jin
Raman Study Of Element Doping Effects On The Superconductivity Of Mgb2, Wenxian Li, Yongqing Li, R H. Chen, Rong Zeng, S. X. Dou, M Y. Zhu, H M. Jin
Faculty of Engineering - Papers (Archive)
The influences of phonon frequency and unit cell volume on the superconductivity of element-doped MgB2 are discussed with reference to a Raman study on SiC, C, Mn, and Al-Ag-doped Mg-B materials. A phenomenon has been found in the doped samples, in that the phonon frequency changes to counteract the crystal lattice variation to keep the system stable within a Grüneisen parameter of 2.0–4.0. The chemical doping effects on phonon frequency and unit cell volume can be explained by the harmonicity-anharmonicity competition in the compounds. A decreased electronic density of states is responsible for the depression of superconductivity that is …
Effects Of Sintering Atmosphere On The Superconducting Properties Of Sic Doped Bulk Mgb2 Superconductor, Sihai Zhou, Alexey V. Pan, Yun Zhang, S. X. Dou
Effects Of Sintering Atmosphere On The Superconducting Properties Of Sic Doped Bulk Mgb2 Superconductor, Sihai Zhou, Alexey V. Pan, Yun Zhang, S. X. Dou
Faculty of Engineering - Papers (Archive)
A study was conducted to investigate the effects of the sintering atmosphere on the superconducting properties of SiC doped MgB2 superconductors. Four different purity Ar gases were chosen as the sintering atmosphere for making bulk samples. It was found that the impurities in the Ar gas resulted in different leves of MgO in the resultant MgB2 superconductors. Superconducting properties, such as the critical temperature (Tc), critical current density (Jc) and upper critical field (Hc2) were affected by the impurity phase inside the samples. Sample phase composition and morphology were analysed to explain the effect of the sintering atmosphere on the …
Effects Of C Substitution On The Pinning Mechanism Of Mgb2, Jianli Wang, Rong Zeng, Jung Ho Kim, Lin Lu, S. X. Dou
Effects Of C Substitution On The Pinning Mechanism Of Mgb2, Jianli Wang, Rong Zeng, Jung Ho Kim, Lin Lu, S. X. Dou
Faculty of Engineering - Papers (Archive)
The temperature and magnetic field of the critical current density of four selected pure and C-doped MgB2 samples have been investigated in detail and the flux pinning mechanism has been analyzed. It was found that the sintering temperature and the substitution of carbon can significantly modify the flux pinning mechanism. Below 30 K, the reduced field dependences of the reduced pinning force for all investigated samples were found to closely obey one scaling law, reflecting the presence of only one dominant pinning mechanism. A delta T-c pinning mechanism was found to be mainly responsible in pure MgB2 samples while the …
Effects Of Vertical Heterogeneity Of Soil Sediments On Seismic Soil Response, Srikanth Venkatesan, M Neaz Sheikh, Hing Ho Tsang, Nelson Lam
Effects Of Vertical Heterogeneity Of Soil Sediments On Seismic Soil Response, Srikanth Venkatesan, M Neaz Sheikh, Hing Ho Tsang, Nelson Lam
Faculty of Engineering - Papers (Archive)
Site effects are resulted from the non-linear filtering mechanisms within the soil sedimentary layers overlying bedrock. In contemporary design codes, site effects are taken into account by introducing different site factors for different site classes. The prescribed site classification systems are based on averaging shear wave velocity in the soil sediments. However, significant amplification of the seismic displacement demand may be developed from mechanisms which can result in resonance behaviour. In such situations, soil amplification cannot be determined accurately by considering the average shear wave velocity of the sediments alone. The effects of vertical heterogeneity in the soil sediments have …
Effects Of Operating Conditions On The Removal Of Trace Organic Contaminants By A Loose Nanofiltration Membrane, Long Nghiem, Stuart Khan
Effects Of Operating Conditions On The Removal Of Trace Organic Contaminants By A Loose Nanofiltration Membrane, Long Nghiem, Stuart Khan
Faculty of Engineering - Papers (Archive)
In recent years, there has been considerable research effort focusing on the removal of specific individual contaminants at trace level concentrations instead of the traditional surrogate, and often ill-defined, water quality indicators. The need for this more precise water quality characterisation has been driven by stricter environmental regulations and legislation, and the increasing need to utilise non-traditional water resources including reclaimed municipal wastewaters. Amongst several advanced technologies used for high quality water treatment, removal of trace contaminants by nanofiltration membranes has been investigated to a considerable extent. However, it is known that such membrane filtration processes tend not to operate …
Effects Of Tsunami On Coastal Ground Conditions And Appropriate Measures For Rail Track Rehabilitation, Buddhima Indraratna, Mohammad Hadi Khabbaz, A. Puswewala, W. Bandara
Effects Of Tsunami On Coastal Ground Conditions And Appropriate Measures For Rail Track Rehabilitation, Buddhima Indraratna, Mohammad Hadi Khabbaz, A. Puswewala, W. Bandara
Faculty of Engineering - Papers (Archive)
On boxing day, 26 December 2004, the largest earthquake for more than 4 decades, (magnitude 9.0) occurred between the Australian and Eurasian plates in the Indian Ocean (along the overly stressed Sunda trench) to the west of Aceh Province (Northern Sumatra). The quake triggered a series of waves that increased in height rapidly close to the shore (tsunami) spreading thousands of kilometers across the Bay of Bengal. In the Eastern and Southern coastal belt of Sri Lanka, the floodwaters reached almost 1 km inland, causing extensive damage to infrastructure and fatalities of unprecedented proportions. Widespread destruction included several kilometres of …
The Effects Of Oil Concentration And Droplet Diameter In Oil-In-Water Emulsion On Strip Rolling, Prabuono B. Kosasih, A. K. Tieu, Weihua Li, Cheng Lu
The Effects Of Oil Concentration And Droplet Diameter In Oil-In-Water Emulsion On Strip Rolling, Prabuono B. Kosasih, A. K. Tieu, Weihua Li, Cheng Lu
Faculty of Engineering - Papers (Archive)
A numerical scheme, which allows tracking of the concentration process within both the inlet and wok zones, has been developed. The scheme allowed us to calculate the rolling pressure and friction associated with the process for different emulsion’s oil concentrations, and oil droplets diameter, ds. Hence the intertwined effect of A,ds, ds and rolling speed on strip rolling parameters could be analyzed. The result shows that rapid concentration, which occurs in the inlet zone, increases the emulsion’s oil concentration sharply. This process effectively transforms the oil into the continuous phase of the emulsion. The analysis of the results also suggests …
Strength Of Concrete-Filled Steel Box Columns With Local Buckling Effects, Qing Quan Liang, Brian Uy, J. Y. Richard Liew
Strength Of Concrete-Filled Steel Box Columns With Local Buckling Effects, Qing Quan Liang, Brian Uy, J. Y. Richard Liew
Faculty of Engineering - Papers (Archive)
The key aspects and features of a nonlinear fiber element analysis method for predicting the strength and behavior of concrete-filled steel box columns with local buckling effects are discussed. The methods is quite useful in predicting the ultimate strengths and behavior of concrete slabs and can also be employed in the advanced analysis of composite frames.