Browsing Τμήμα Μηχανικών Μηχανολογίας και Κατασκευαστικής / Department of Mechanical and Manufacturing Engineering by Title
Now showing items 317-336 of 1036
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Few-step synthesis, thermal purification and structural characterization of porous boron nitride nanoplatelets
(2016)Hexagonal boron nitride (h-BN) nanoplatelets with 99 wt.% purity, 900 to 2000 nm particle width, 30 to 90 nm particle thickness, 213 m2/g specific surface area (SSA), 66% micropore SSA and 0.85 nm average pore size were ...
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Finite segment model complexity of an Euler-Bernoulli beam
(2015)A common approach for modeling the dynamic behavior of distributed parameter systems is the approximation through finite-segment models. These models are able to accurately predict the dynamic behavior of the system given ...
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First-passage study and stationary response analysis of a BWB hysteresis model using quasi-conservative stochastic averaging method
(1995)The quasi-conservative stochastic averaging (QCSA) method is applied to a Bouc-Wen-Baber hysteretic system (BWB) under Gaussian white noise excitations. The stationary probability density of the system's response amplitude ...
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Article
Flow development in compression of a finite amount of a Bingham plastic
(2007)The flow and shape evolution during the compression of a finite amount of a Bingham plastic is investigated by means of numerical simulations. The problem relates to the popular compression test used for the rheological ...
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Flow development of Herschel-Bulkley fluids in a sudden three-dimensional square expansion
(1999)The flow development of Herschel-Bulkley fluids in a sudden three-dimensional square expansion is studied numerically. The flow is modeled using the mixed-Galerkin finite element formulation to solve the conservation of ...
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Article
Flow instabilities of Herschel-Bulkley fluids
(2003)We investigate numerically the interactions of two-dimensional jets of Bingham plastic and Herschel-Bulkley fluids with a vertical surface at a distance from the die exit. This problem simulates the early stages of filling ...
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Conference Object
Flow of Aqueous Solutions in Carbon Nanotubes
(Springer Berlin Heidelberg, 2004)We conduct simulations of water flowing inside carbon nanotubes using non-equilibrium molecular dynamics simulations. A new adaptive forcing scheme is proposed to enforce a mean center of mass velocity. This scheme is ...
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Article
Fluorescent electrospun PMMA microfiber mats with embedded NaYF4: Yb/Er upconverting nanoparticles
(2019)Functional upconverting nanoparticles (UCNPs) can offer new possibilities in fluorescent applications as they exhibit desired characteristic properties like large shift between the fluorescent emission signal and the ...
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Flux pinning in YBa2Cu3O7 single crystals: Neutron irradiation and annealing
(1992)Results of dc magnetization on neutron (n) -irradiated YBa2Cu3O7 single crystals are presented. The crystals were irradiated to a fluence of 2×1017 n/cm2 (E>0.1 MeV). The magnetization has been measured at 10, 40, and 70 ...
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Flux-pinning energy and critical current densit detwinned single crystals
(1996)We have measured the magnetic relaxation of four detwinned single crystals of Pr-doped (Formula presented)(Formula presented)(Formula presented)(Formula presented)(Formula presented) with x=0, 0.1, 0.2, and 0.3, in a ...
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Formability and microstructure evolution mechanisms of Ti6Al4V alloy during a novel hot stamping process
(2018)A novel hot stamping process for Ti6Al4V alloy using cold forming tools and a hot blank was presented in this paper. The formability of the material was studied through uniaxial tensile tests at temperatures ranging from ...
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Formation of oligotriazoles catalysed by cucurbituril
(2002)The catalytic activity of cucurbituril in 1,3-dipolar cycloadditions has been applied to the synthesis of oligotriazoles.
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A Frequency-Based Interpretation of Energy-Based Model Reduction of Linear Systems
(2016)Various modeling techniques have been proposed in order to make modeling a more systematic procedure and to facilitate the development of modeling software that provide users, even experienced users, more ease when developing ...
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Conference Object
FTIR Reflectivity spectra of Thermoelectric K2Sb 8Se13 crystals
(Affiliation: Physics Department, Aristotle University of Thessaloniki, 54124 Thessaloniki, GreeceAffiliation: Department of Mechanical and Manufacturing Engineering, University of CyprusAffiliation: Department of Chemistry, Michigan State University, MI 48824, United StatesCorrespondence Address: Hatzikraniotis, E.Physics Department, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece, 2006)Investigations of ternary and quaternary compounds, Bi and Sb chalcogenides, have shown that several multinary compounds containing alkali metals present promising thermoelectric properties. In this work, the FTIR reflectivity ...
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Article
Fuel cell APU for silent watch and mild electrification of a medium tactical truck
(2004)This paper investigates the opportunities for improving truck fuel economy through the use of a Fuel Cell Auxiliary Power Unit (FC APU) for silent watch, as well as for powering electrified engine accessories during driving. ...
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Article
Full length article: Mechanics and energetics modeling of ball-milled metal foil and particle structures
(2017)The reported research establishes a semi-analytical computational predictive model of fractal microstructure in ball-milled metal foils and powder particulates, with emphasis on its transformation mechanics via an energy-based ...
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Full magnetohydrodynamic solution of liquid-metal flow in an insulating pipe subjected to a strong fringing magnetic field
(2012)This paper addresses liquid-metal flow under a strong, fringing, decreasing magnetic field in an insulating circular pipe by a full resolution of the magnetohydrodynamic (MHD) equations. The aims of the paper are first to ...
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Conference Object
Fully turbulent flow in a physiologically realistic human airway bifurcation
(TSFP-9, 2015)Recent computational studies have shown that the airflow in the upper human airways is turbulent during much of the respiratory cycle. A feature of respiratory airflow that poses a challenge to computations based on ...