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Jusuke Hidaka - One of the best experts on this subject based on the ideXlab platform.

  • effect of paddle Rotational Speed on particle mixing behavior in electrophotographic system by using parallel discrete element method
    Advanced Powder Technology, 2009
    Co-Authors: Hiroshi Mio, Ryohei Higuchi, Wakana Ishimaru, Atsuko Shimosaka, Yoshiyuki Shirakawa, Jusuke Hidaka
    Abstract:

    Abstract The objective of this paper is to investigate the effect of paddle Rotational Speed on the mixing behavior in an agitation process of an electrophotographic system by using parallel DEM. The mixing behaviors of beads with different sizes and densities were measured at various paddle Rotational Speeds by using a high-Speed video camera, and were compared with the simulation results. A good agreement in the mixing behavior was obtained and the changes in particle velocity during the mixing were comparable. The simulation for mixing behavior of larger carrier particles suggested that the radial particle mixing was much faster than the axial one. The faster radial mixing is attributed to the fact that there are two radial flows in the system; the one is over the shaft, the other is between the paddle and shaft. The extent of mixing depended on the number of paddle rotations when the Rotational Speed is larger than 100 rpm, while the mixing under 50 rpm is completed at a smaller number of rotations.

  • effect of paddle Rotational Speed on particle mixing behavior in electrophotographic system by using parallel discrete element method
    Journal of The Society of Powder Technology Japan, 2009
    Co-Authors: Hiroshi Mio, Ryohei Higuchi, Wakana Ishimaru, Atsuko Shimosaka, Yoshiyuki Shirakawa, Jusuke Hidaka
    Abstract:

    The objective of this paper is to investigate the effect of paddle Rotational Speed on the mixing behavior in an agitation process of an electrophotographic system by using parallel DEM. The mixing behaviors of beads with different sizes and densities were measured at various paddle Rotational Speeds by using a high-Speed video camera, and were compared with the simulation results. A good agreement in the mixing behavior was obtained and the changes in particle velocity during the mixing were comparable. The simulation for mixing behavior of larger carrier particles suggested that the radial particle mixing was much faster than the axial one. The faster radial mixing is attributed to the fact that there are two radial flows in the system; the one is over the shaft, the other is between the paddle and the shaft. The extent of mixing depended on the number of paddle rotations when the Rotational Speed is larger than 100 rpm, while the mixing under 50 rpm is completed at a smaller number of rotations.

N Ozdemir - One of the best experts on this subject based on the ideXlab platform.

  • effect of Rotational Speed on the interface properties of friction welded aisi 304l to 4340 steel
    Materials & Design, 2007
    Co-Authors: N Ozdemir, F Sarsilmaz, A Hascalik
    Abstract:

    The aim of this study is to investigate experimentally the interface properties in terms of Rotational Speed in friction-welded AISI 304L to AISI 4340 alloy steel. Friction welding was conducted with five different Rotational Speeds using a direct-drive type friction welding machine. Friction pressure, forging pressure, friction time and forging time are fixed. The integrity of joints was investigated by scanning electron microscopy, while the mechanical properties assessments included microhardness and tensile tests. The experimental results showed that the thickness of full plastic deformed zone (FPDZ) formed at interface reduce as a result of more mass discarded from the welding interface with increase of the Rotational Speed. It was also observed that the width of the FPDZ has a important effect on the tensile strength of friction-welded samples and the tensile strength increases with increase of the Rotational Speed.

  • investigation of the mechanical properties of friction welded joints between aisi 304l and aisi 4340 steel as a function Rotational Speed
    Materials Letters, 2005
    Co-Authors: N Ozdemir
    Abstract:

    In this study, standard AISI 304L austenitic stainless steel and AISI 4340 steel couple were welded by friction welding process using five different Rotational Speeds. The joining performances of AISI 304L/AISI 4340 friction-welded joints were studied and the influences of Rotational Speed on the microstructure and mechanical properties of the welded joints were also estimated. The microstructural properties of heat affected zone (HAZ) were examined by scanning electron microscopy (SEM). The microhardness across the interface perpendicular to the interface was measured and the strength of the joints was determined with tensile tests. The experimental results indicate that the tensile strength of friction-welded 304L/4340 components were markedly affected by joining Rotational Speed selected.

M.-h. Zhu - One of the best experts on this subject based on the ideXlab platform.

  • Analysis on the effects of Rotational Speed of grinding stone on removal behavior of rail material
    Wear, 2015
    Co-Authors: K. K. Gu, Qing Yang Liu, Wen Jian Wang, Q. Lin, Hongyu Wang, Jun Guo, M.-h. Zhu
    Abstract:

    The grinding process for maintaining the railroad rails can affect their performance. A rail grinding friction testing apparatus was developed to investigate the effects of Rotational Speed of grinding stone on removal behavior of rail material. The rail-grinding stone contact consists of a round, flat grinding stone and two test specimens made from Mn-steel rails that are pressed against the face of the stone. The effects of grinding wheel Rotational Speed on the abrasive removal mechanism of rail material are explored in detail. The results indicate that as the grinding wheel Rotational Speed increases, the friction coefficient, the surface roughness of rail specimens and the width of the wear grooves decrease. The grinding wear volume, the microindentation hardness of the rail specimens and the surface temperature-rise all increase as the number of grinding cycles increase. Wear debris collected during the test is composed of round particles and curled cutting chips. The debris is mainly composed of Fe3O4, FeO and Fe. As grinding Rotational Speed increases, the content of Fe3O4 and FeO increases but the width of the cutting chips decreases.

Faucher O. - One of the best experts on this subject based on the ideXlab platform.

  • Molecular alignment echoes probe collision-induced Rotational-Speed changes
    'American Physical Society (APS)', 2020
    Co-Authors: Hartmann J. -m., Ma J., Delahaye T., Billard F., Hertz E., Wu J., Lavorel B., Boulet C., Faucher O.
    Abstract:

    We show that the decays with pressure of the alignment echoes induced in N2O-He gas mixtures by two laser pulses with various delays bring detailed information on collision-induced changes of the Rotational Speed. Measurements and calculations demonstrate that collisions reduce the echo amplitude all the more efficiently when the echo appears late. We quantitatively explain this behavior by the filamentation of the classical Rotational phase space induced by the first pulse and the progressive narrowing of the filaments with time. The variation of the echo decay thus reflects the ability of collisions to change the molecules' Rotational Speed by various amounts, enabling refined tests of models for the dissipation induced by intermolecular forces

  • Molecular alignment echoes probing collision-induced Rotational-Speed changes
    'American Physical Society (APS)', 2020
    Co-Authors: Hartmann Jean-michel, Ma J., Delahaye T., Billard F., Hertz E., Wu J., Lavorel B., Boulet C., Faucher O.
    Abstract:

    International audienceWe show that the decays with pressure of the Rotational alignment echoes induced in N 2 O-He gas mixtures by two ultrashort laser pulses with various delays show detailed information about collision-induced changes of the Rotational Speed of the molecules. Measurements and classical calculations consistently demonstrate that collisions reduce the echo amplitude all the more efficiently when the echo appears late. We quantitatively explain this behavior by the filamentation of the classical Rotational phase space induced by the first pulse and the narrowing of the filaments with time. The above mentioned variation of the echo decay then reflects the ability of collisions to change the molecular rotation Speed by various amounts, enabling refined tests of models for the dissipation induced by intermolecular forces. We also demonstrate that the collision-induced changes of the Rotational Speed within the filaments are the classical equivalents of the nonsecular transfers among quantum coherences, thus evidencing the correspondence between the classical and quantum worlds

Sander J Wezenberg - One of the best experts on this subject based on the ideXlab platform.

  • allosteric regulation of the Rotational Speed in a light driven molecular motor
    Journal of the American Chemical Society, 2016
    Co-Authors: Adele Faulkner, Thomas Van Leeuwen, Ben L Feringa, Sander J Wezenberg
    Abstract:

    The Rotational Speed of an overcrowded alkene-based molecular rotary motor, having an integrated 4,5-diazafluorenyl coordination motif, can be regulated allosterically via the binding of metal ions. DFT calculations have been used to predict the relative Speed of rotation of three different (i.e., zinc, palladium, and platinum) metal dichloride complexes. The photochemical and thermal isomerization behavior of these complexes has been studied in detail using UV–vis and 1H NMR spectroscopy. Our results confirm that metal coordination induces a contraction of the diazafluorenyl lower half, resulting in a reduction of the steric hindrance in the “fjord” region of the molecule, which causes an increase of the Rotational Speed. Importantly, metal complexation can be accomplished in situ and is found to be reversible upon the addition of a competing ligand. Consequently, the Rotational behavior of these molecular motors can be dynamically controlled with chemical additives.

  • Allosteric Regulation of the Rotational Speed in a Light-Driven Molecular Motor
    2016
    Co-Authors: Adele Faulkner, Ben L Feringa, Thomas Van Leeuwen, Sander J Wezenberg
    Abstract:

    The Rotational Speed of an overcrowded alkene-based molecular rotary motor, having an integrated 4,5-diazafluorenyl coordination motif, can be regulated allosterically via the binding of metal ions. DFT calculations have been used to predict the relative Speed of rotation of three different (i.e., zinc, palladium, and platinum) metal dichloride complexes. The photochemical and thermal isomerization behavior of these complexes has been studied in detail using UV–vis and 1H NMR spectroscopy. Our results confirm that metal coordination induces a contraction of the diazafluorenyl lower half, resulting in a reduction of the steric hindrance in the “fjord” region of the molecule, which causes an increase of the Rotational Speed. Importantly, metal complexation can be accomplished in situ and is found to be reversible upon the addition of a competing ligand. Consequently, the Rotational behavior of these molecular motors can be dynamically controlled with chemical additives