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Full-Text Articles in Engineering
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 …