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TAURA Hiroo

    Department of Mechanical Engineering　Associate Professor
Last Updated :2024/05/19

Researcher Information

J-Global ID

Research Interests

  • トライボロジー   機械力学   

Research Areas

  • Manufacturing technology (mechanical, electrical/electronic, chemical engineering) / Machine elements and tribology
  • Manufacturing technology (mechanical, electrical/electronic, chemical engineering) / Design engineering
  • Informatics / Mechanics and mechatronics

Academic & Professional Experience

  • 2012/01 - Today  Nagaoka University of TechnologyFaculty of Engineering准教授
  • 2007/04 - 2011/12  Nagaoka University of TechnologyFaculty of Engineering助教
  • 2001/04 - 2007/03  Nagaoka University of TechnologyFaculty of Engineering助手

Association Memberships

  • GAS TURBINE SOCIETY OF JAPAN   TURBOMACHINERY SOCIETY OF JAPAN   JAPANESE SOCIETY OF TRIBOLOGISTS   THE JAPAN SOCIETY OF MECHANICAL ENGINEERS   

Published Papers

  • Kaneko, S; Taura, H; Taira, M; Luu, V. M
    Journal of Tribology 142 (1) 11803  2020/01 [Refereed]
  • Dynamic Characteristics of Journal Bearings Considering Mass-Conservation
    Taura H
    18th EDF/Pprime Workshop: 18th EDF/Pprime Workshop 2019/10 [Refereed]
  • Effect of textured region on the static and dynamic characteristics of partially textured bearings
    Taura H
    International Conference on Mechanical Power Transmission 2019 (ICMPT2019) 2019/07 [Refereed][Invited]
  • Nagai, K; Koiso, K; Kaneko, S; Taura, H; Watanabe, Y
    Journal of Tribology 141 (1) 22201  2019/02 [Refereed]
  • Effect of Texture Region on the Static and Dynamic Characteristic of Partially Textured Journal Bearings
    Taura H
    IFToMM 2018 Rotordynamics 2018/09 [Refereed]
  • Hiroo Taura; Kazuki Nakayama
    Tribology International Elsevier Ltd 123 155 - 160 0301-679X 2018/07 [Refereed]
     
    Detecting the slip using the acoustic emission (AE) technique is useful for condition-monitoring of machinery and equipment. However, the characteristics of the AE signals at the onset of a slip are insufficiently clarified. We conducted friction tests and simultaneously measured the AE signal, friction, and relative displacement of a brass ball in contact with a flat steel plate. The AE signal clearly increased during the slip, and the effective value of the AE signal well-mimicked the sliding speed. In a frequency analysis of the AE signals, the characteristic frequency components increased significantly during the slip. From the obtained data, we also calculated the AE energy and the friction work during the slip. Both values shared a strong proportional relationship.
  • K. Nagai; S. Kaneko; H. Taura; Y. Watanabe
    Journal of Tribology American Society of Mechanical Engineers (ASME) 140 (3) 32201  1528-8897 2018/05 [Refereed]
     
    Numerical and experimental analyses were carried out to investigate the static characteristics of liquid annular seals with helical grooves in a seal stator. In the numerical analysis, the momentum equations with turbulent coefficients and the continuity equation, which were averaged across the film thickness, were numerically solved to obtain the leakage flow rate and the pressure distributions in the seal clearance. To accurately define the location of the step between the groove and the land regions in the calculation domain, these governing equations were expressed using an oblique coordinate system in which the directions of coordinate axes coincided with the circumferential direction and the direction along the helical grooves. The numerical analysis included the effects of both fluid inertia and energy loss due to expansion during the passage of fluid from the land region to the helical groove region and that due to contraction from the groove region to the land region. In the experimental analysis, the leakage flow rate and the fluid-film pressure distributions in the seal clearance were measured for the helically grooved seals with different helix angles of the helical groove. The numerical results of leakage flow rate and pressure distributions agree reasonably with the experimental results, which demonstrates the validity of the numerical analysis. The leakage flow rate of the helically grooved seals was influenced by two factors: fluid energy loss during passage through the step between the groove and the land, and the pumping effect by which the spinning motion of the rotor pushes the flow back upstream along the helical grooves. Under a low range of rotor spinning velocity, the leakage flow rate decreased with helix angle because the effect of fluid energy loss in the steps was significant. By contrast, under a high range of spinning velocity, the quantitative difference in the leakage flow rate due to the helix angle decreased compared to that under a low range because the reduction in the leakage flow rate due to the pumping effect was pronounced for a larger helix angle. The effects of helix angle and rotor spinning velocity on the leakage flow rate are explained qualitatively using a simplified model.
  • Hiroyuki Yamada; Hiroo Taura; Satoru Kaneko
    JOURNAL OF TRIBOLOGY-TRANSACTIONS OF THE ASME ASME 140 (1) 11703  0742-4787 2018/01 [Refereed]
     
    Numerous previous numerical studies have investigated the effect of surface texturing upon the static characteristics of journal bearings, including their load-carrying capacity and friction torque. In general, the dynamic characteristics of journal bearings are also important, since they are essential factors in predicting the vibration behavior of actual rotors supported by journal bearings. However, the effects of surface texture upon these dynamic characteristics have not been investigated through either numerical or experimental analysis. Thus, in the present study, such analyses were conducted to investigate the dynamic characteristics of textured journal bearings, such as their dynamic coefficients of oil film and the stability-threshold shaft speed supported by the bearings. Numerical analysis was done using a model that included inertial effects and energy loss; this model agreed well with experimental results concerning static characteristics from our previous study. Dynamic testing based on a sinusoidal-excitation method was also performed using textured, journal bearings with uniform square dimples to verify the numerical results, which agreed qualitatively with those, of experiment, confirming the validity of the numerical analysis. These results suggest that under the same, operating conditions, the main effect of texturing upon the dynamic coefficients is to yield the cross- coupled stiffness coefficients with lower absolute values than the conventional ones with a smooth surface. The linear stability-threshold shaft speed of the rotor supported, by the textured journal bearings became higher than that of a smooth bearing, mainly due to the reduction of cross-coupled stiffness coefficients. This tendency became more pronounced for high Reynolds number operating conditions and textured bearings with a large number of dimples.
  • Hiroyuki Yamada; Hiroo Taura; Satoru Kaneko
    JOURNAL OF TRIBOLOGY-TRANSACTIONS OF THE ASME ASME 139 (5) 51703  0742-4787 2017/09 [Refereed]
     
    Surface texturing is a technique for improving frictional and hydrodynamic performances of journal bearings because microtextures can serve as reservoirs for oil or traps for debris and may also generate hydrodynamic pressure. Over the past two decades, many researchers have experimentally demonstrated that texturing of various tribological elements can reduce friction force and wear, contributing to improvement of lubrication performance. Some numerical studies have examined the hydrodynamic lubrication conditions and reported that surface texturing affects the static characteristics of journal bearings, such as their load carrying capacity and friction torque. However, the validity of these numerical models has not been confirmed because of a lack of experimental studies. This study proposes a numerical model that includes both inertial effects and energy loss at the edges of dimples on the surface of a journal bearing in order to investigate the bearing's static characteristics. Experimental verification of journal bearings is also conducted with a uniform square-dimple pattern on their full-bearing surface. The results obtained by the model agree well with those of experiment, confirming the model's validity. These results show that under the same operating conditions, textured bearings yield a higher eccentricity ratio and lower attitude angle than the conventional ones with a smooth surface. This tendency becomes more marked for high Reynolds number operating conditions and for textured bearings with a large number of dimples.
  • Nagai, K; Kaneko, S; Taura, H; Watanabe, Y
    Journal of Tribology 140 (5) 52201  2017/05 [Refereed]
  • Effect of Dimple Depth on the Dynamic Characteristics of Fully Textured Journal bearings
    Taura, H; Yamada, H; Kaneko, S
    16th EDF/Pprime Workshop: 16th EDF/Pprime Workshop 2017/01 [Refereed]
  • Experimental investigation on dynamic characteristics of textured journal bearing with square-dimples
    Yamada, H; Taura, H; Kaneko, S; Ibe, S
    IMechE 11th International Conference on Vibrations in Rotating Machinery 389 - 396 2016/09 [Refereed]
  • Experimental study on static and dynamic characteristics of helically grooved seals
    Nagai, K; Mitsukawa; S. Kaneko; S. Taura, H; Watanabe, Y
    IMechE 11th International Conference on Vibrations in Rotating Machinery，2016 659 - 668 2016/09 [Refereed]
  • Satoru Kaneko; Hiroo Taura; Ryosuke Fukasawa; Hitoshi Kanai
    Journal of Tribology 138  - 2623 2016/01 [Refereed]
  • Effect of supply oil flow rate on the dynamic characteristics of oil lubricated journal bearings
    Taura. H
    International Gas Turbine Conference 2015 WePM2F.2.  2015/11 [Refereed]
  • Effect of square-dimple size on dynamic characteristics of textured journal bearings
    Yamada, H; Kaneko, S; Taura, H
    Effect of square-dimple size on dynamic characteristics of textured journal bearings IFToMM 8th International Conference on Rotordynamics (2014) 883 - 893 2014/09 [Refereed]
  • 金子覚; 田浦裕生
    日本機械学会論文集 C編 78 (791) 2613 - 2623 2012/07 [Refereed]
  • 田浦裕生; 金子覚
    日本機械学会論文集 C編 78 (790) 2266 - 2277 2012/06 [Refereed]
  • 田浦裕生; 田中正人
    日本機械学会論文集 C編 The Japan Society of Mechanical Engineers 77 (783) 4100 - 4110 0387-5024 2011/11 [Refereed]
     
    This paper shows the stability characteristics of a flexible rotor supported in three types of multi-lobe bearings, i.e. 2-lobe bearings, 3-lobe bearings and 4-lobe bearings, and tilting pad journal bearings theoretically. Angular spring and angular damping coefficients of oil film of the bearings are calculated and the effects of the preload factor on the coefficients are discussed. With a Jeffcott rotor model considering the angular spring and angular damping coefficients, stability charts are made under the wide range of operating conditions, and show that 2-lobe bearings with a high preload factor cover much larger stable region in the stability charts than the other bearings, and 3-lobe bearings, 4-lobe bearings and tilting pad journal bearings with line contact pivots do not have special advantages in comparison with 2-lobe bearings. From the results, it is concluded that 2-lobe bearings with a high preload factor are most suitable for supporting the flexible rotor.
  • TAURA Hiroo; TANAKA Masato
    TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A The Japan Society of Mechanical Engineers 77 (781) 3480 - 3489 0387-5024 2011/09 [Refereed]
     
    This paper studies the static and dynamic characteristics of tilting-pad journal bearings (TPJBs) with the load directions different from either of the two typical load directions of LOP (Load On Pad) and LBP (Load Between Pads). Theoretical results show that the effects of the load direction on the static and dynamic characteristics are found in the range of low Sommerfeld number S and increase with the decrease of S. The cross-coupling terms of spring and damping coefficients are no longer zero if the load direction is different from LOP and LBP, but the cross-coupling spring coefficients are equal, which indicates that the non-zero cross-coupling terms of the spring coefficients do not cause the self-excited vibration.
  • 田浦裕生; 金子覚
    日本機械学会論文集 C編 The Japan Society of Mechanical Engineers 77 (781) 3511 - 3521 0387-5024 2011/09 [Refereed]
     
    The static characteristics of journal bearings with an axial groove under starved lubrication are studied theoretically and a lubrication condition map is newly proposed. This map is represented using the contour map of the eccentricity ratio with the Sommerfeld number S in the horizontal axis and the dimensionless oil flow rate Qsup externally supplied in the vertical axis for the wide range of the operating conditions. It is found from the map that the eccentricity ratio increases with the decrease of Qsup. This tendency is more marked for a higher Sommerfeld number. Journal center loci show that the attitude angle decreases with Qsup. The degree of the starvation Λ and the oil supply rate Ψ are defined as the ratio of the dimensionless oil flow rate into the inlet of the oil film region to that obtained under the flooded lubrication condition and as the ratio of Qsup to Qsup* obtained under flooded lubrication conditions, respectively. The degree of starvation Λ varies with Ψ and the value of Λ can be determined by setting the value of Ψ. These facts suggest that the static characteristics and Λ are theoretically predicted once the value of Qsup or Ψ is determined.
  • TAURA Hiroo
    TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A The Japan Society of Mechanical Engineers 77 (775) 879 - 888 0387-5024 2011/03 [Refereed]
     
    This paper shows the effect of angular spring and angular damping coefficients of oil film on the stability characteristics of an elastic rotor supported in circular journal bearings. A theoretical Jeffcott rotor model considering the angular spring and angular damping coefficients are constructed, and stability threshold speeds and stability margin were calculated under wide operating conditions. Comparing to the model neglecting the angular spring and angular damping coefficients, the angular spring and angular damping coefficients do not affect on the stability of the rotor-bearing system when the stiffness of the rotating shaft is high. On the other hand, when the shaft is very flexible, Sommerfeld number at the stability threshold speed increases, indicating the angular spring and angular damping coefficients improve the stability of the rotor-bearing system.
  • TAURA Hiroo
    TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A The Japan Society of Mechanical Engineers 77 (775) 889 - 902 0387-5024 2011/03 [Refereed]
     
    This paper shows the stability characteristics of a flexible rotor supported in three types of multi-lobe bearings, i.e. 2-lobe bearings, 3-lobe bearings and 4-lobe bearings, and tilting pad journal bearings theoretically. Angular spring and angular damping coefficients of oil film of the bearings are calculated and the effects of the preload factor on the coefficients are discussed. With a Jeffcott rotor model considering the angular spring and angular damping coefficients, stability charts are made under the wide range of operating conditions, and show that 2-lobe bearings with a high preload factor cover much larger stable region in the stability charts than the other bearings, and 3-lobe bearings, 4-lobe bearings and tilting pad journal bearings with line contact pivots do not have special advantages in comparison with 2-lobe bearings. From the results, it is concluded that 2-lobe bearings with a high preload factor are most suitable for supporting the flexible rotor.
  • 田浦裕生; 金子覚
    日本機械学会論文集 C編 The Japan Society of Mechanical Engineers 75 (756) 2327 - 2334 0387-5024 2009/08 [Refereed]
     
    We propose a new approximation method, which calculates shearing forces of a liquid meniscus bridge between parallel plates with small clearance, and discuss the effect of three geometrical parameters, the volume of the bridge, clearance of the planes, and contact angle, on the shearing forces. The method introduces the nonaxisymmetry of the liquid meniscus-bridge by permitting the change of the contact angle on the triple lines, and thereby the calculated shearing forces increase with the shearing distance in the region of lower shearing distance. Experiments were carried out to measure the spring constants of the meniscus bridge in the shearing direction, and showed that the experimental results agreed with the calculated ones qualitatively. Moreover, the shape of the liquid meniscus bridge under shear is consistent with the assumptions of the approximation method. Shearing forces increased with both the volume of the liquid meniscus bridge and the contact angle or with the decrease of clearance.
  • 金子覚; 田浦裕生; 上田範吉; 辺見耕太
    日本機械学会論文集 C編 The Japan Society of Mechanical Engineers 74 (748) 2855 - 2863 0387-5024 2008/12 [Refereed]
     
    The theoretical and experimental study is carried out to investigate the dynamic characteristics of the liquid annular seals with a square-hole pattern in seal stator. The mometum equations with turbulent coefficients and the continuity equation, which are averaged across the film thickness, are numerically solved in consideration of the pressure jumps at each step between the land and the square-hole regions. This pressure discontinuity is evaluated based on the continuity of volume flow rate across each step and the generalized Bernoulli equation. The numerical results of the dynamic fluid force and the dynamic coefficients agree well with the experimental results, which prove the validity of the numerical analysis. The effects of the inlet swirl velocity on the dynamic coefficients and the whirl-frequency ratio are also described for the square-hole pattern seal as well as the annular plain seal with smooth surface and the parallel-grooved seal.
  • A study on the oil whip of an elastic rotor supported in tilting-pad journal bearings
    Taura, H; Tanaka, M
    IMechE 9th International Conference on Vibrations in Rotating Machinery 871 - 882 2008/09 [Refereed]
  • 金子覚; 田浦裕生; 上田範吉; 辺見耕太
    日本機械学会論文集 C編 The Japan Society of Mechanical Engineers 74 (745) 2171 - 2181 0387-5024 2008/09 [Refereed]
     
    The theoretical and experimental study is carried out to investigate the static characteristics of the liquid annular seals with a square-hole pattern in seal stator. The momentum equations with turbulent coefficients and the continuity equation, which are averaged across the film thickness, are numerically solved to obtain the pressure distributions in the seal clearance and the leakage flow rate. Semi-empirical pressure jump coefficients are used for evaluation of both pressure jumps due to the expansion at the passage of the fluid from the land to the square-hole region and the contraction from the square-hole to the land region. The numerical results of the pressure distribution and the leakage flow rate agree well with the experimental results, which proves the validity of the numerical analysis. The pressures decrease in the axial direction and their distribution has periodical unevenness due to the square-hole pattern in the seal stator. The square-hole pattern seal as well as the parallel-grooved annular seal yields a lower leakage flow rate than conventional seals with smooth surfaces. This reduction of the leakage flow rate is attributed to the pressure jump phenomena with energy loss induced by the axial flow passage across each step between the land and the square-hole region.
  • 金子覚; 田浦裕生; 福井章二; 船久保弥
    日本機械学会論文集 C編 The Japan Society of Mechanical Engineers 74 (737) 183 - 191 0387-5024 2008/01 [Refereed]
     
    The theoretical and experimental study is carried out to investigate the squeeze film penomena between a cylindrical porous block and an impermeable rigid plate. The porous rubber block is rotated and oscillated sinusoidally in the direction perpendicular to its surface, whereas the rigid plate is stationary. The deformation of the porous rubber block is evaluated with an approximate method, in which the cylindrical rubber block is simplified to be a set of concentric rings and each ring is assumed to be deformed only axially and independently from the neighboring ones. The each ring can be replaced a three-element viscoelastic model. The theoretical result agrees approximately with the experimental result and both results show that a rotational motion slightly decreases the squeeze film pressure and force due to a centrifugal force mainly acting on the film. The effects of the permeability of the porous matrix, the velocity slip at the porous surface and the surface deformation of the porous matrix on the squeeze film characteristics are made clear by comparing the results for the squeeze film between the porous rubber surface and the impermeable rigid surface with those between a pair of impermeable rigid plates.
  • 田浦裕生; 田中正人
    日本機械学会論文集 C編 73 (734) 2710 - 2718 2007/10 [Refereed]
  • 田浦裕生; 田中正人
    日本機械学会論文集 C編 The Japan Society of Mechanical Engineers 72 (722) 3227 - 3235 0387-5024 2006/10 [Refereed]
     
    This paper studies the stability characteristics of tilting-pad journal bearings theoretically and experimentally. A tilting-pad journal bearing floating on a rotating rigid shaft was found to turn unstable beyond threshold shaft speeds, whirling with a subsynchronous frequency in the conical mode. The threshold shaft speeds were theoretically obtained for various operating conditions with the angular stiffness coefficients and the angular damping coefficients of the oil film due to the tilt motion of the bearing being considered. The predictions were found to agree well with measurements qualitatively. This unstable vibration of the bearing results from the cross-coupling terms of the angular stiffness coefficients much larger than the direct terms at higher Sommerfeld number. The threshold speeds were found to be insensitive to the variations of preload factor, which is contrary to the case of the parallel mode oil whip.
  • Effect of angular spring and angular damping of oil film on the stability characteristics of tilting-pad journal bearings
    Taura, H; Tanaka, M
    IFToMM 7th International Conference on Rotordynamics 315  2006/09 [Refereed]
  • 田浦裕生; 高木聡彦; 川口雅弘; 金子覚; 加藤孝久
    日本機械学会論文集 C編 The Japan Society of Mechanical Engineers 72 (716) 1243 - 1248 0387-5024 2006/04 [Refereed]
     
    This paper shows the effect of ultrathin lubricant films between sliding bodies on acoustic emission (AE) signals induced by the sliding friction and discusses the application of the AE techniques to the monitoring of the lubricant films. Experiments were conducted with a ball-on-disk friction tester to measure the AE signals. The ball was a glass ball of 5mm diameter. The disk was a magnetic disk with a DLC protective layer on its surface, and was coated with PFPE Z-dol 4000 about 1.5nm thick. The noticeable AE envelope signals were induced by the local decrease in the mobile layer at the initial stage of the friction test, and then the magnitude of AE envelope signals increased with the decrease of both the mobile and the bonded layers. The AE map, which is a cascade graph of the AE envelope signals measured in time order, was proposed to monitor the time variation of the spatial distribution of PFPE film thickness, and showed that the mobile layer moved to the direction of friction.
  • Hiroo Taura; Toshihiko Takaki; Masahiro Kawaguchi; Satoru Kaneko; Takahisa Kato
    Proceedings of the World Tribology Congress III - 2005 771 - 772 2005 
    This paper shows the effect of ultrathin lubricant films between sliding bodies on Acoustic Emission (AE) signals induced by the sliding friction. Experiments were conducted with a ball-on-disk friction tester to measure the friction coefficient, the raw AE signals and the root-mean-squarevalues of the AE signals (the AErms signals). The ball was a glass ball of 5mm diameter. The disk was a magnetic disk used for 2.5 inch HDD with a DLC protective layer on its surface, and was coated with PFPE Z-dol 4000 about 1.5nm thick. The AErms signals kept a low level for some time after the start of the test, and then increased. Its time variation was similar to that of friction coefficient. After the friction test, the circumferential distribution of the lubricant film thickness was measured with an ellipsometer. The distribution demonstrated the reduction of the lubricant film thickness at the circumferential position where the magnitude of AE signals became large. These facts showed that the AE signals correlated well with the lubricant film thickness. Copyright © 2005 by ASME.
  • Hiroo Taura; Masahiro Kawaguchi; Satoru Kaneko; Takahisa Kato
    Japanese Journal of Tribology 50 (2) 286 - 297 1045-7828 2005 
    This work discusses acoustic emission (AE) characteristics of bilayered molecular films (BMFs), which consist of a mobile lubricant monolayer and a bonded one. The AE effective value was measured with a ball-on-disk friction tester and correlated well with the friction coefficient Moreover, from the observation of the AE signals, we found that the amplitude of the AE signals increased periodically - whose period was identical to the disk revolution - and the time region with high amplitude extended with running time. This suggests that BMF wear occurs on a small part of the disk And then expands to the whole. From these results, we considered that the AE measurement applies to the condition monitoring of BMFs. © 2005 by Allerton Press, Inc.
  • H Taura; M Kawaguchi; S Kaneko; T Kato
    JOURNAL OF JAPANESE SOCIETY OF TRIBOLOGISTS JAPAN SOC TRIBOLOGISTS 50 (4) 338 - 345 0915-1168 2005 [Refereed]
     
    This paper shows acoustic emission (AE) characteristics of bi-layered molecular films (BMFs), which consist of a mobile lubricant monolayer and a bonded one. The AE effective value was measured with a ball-on-disk friction tester, and was correlated well with the friction coefficient Moreover, from the observation of the AE signals, it was found that the amplitude of the AE signals increased periodically, whose period was identical to the disk revolution, and the time region with high amplitude extended with running time. This suggests that the wear of BMFs occurs at a small part on the disk, and then expands to the whole. From these results, it was considered that the AE measurement is applicable to the condition monitoring of BMFs.
  • H Taura; M Tanaka
    VIBRATIONS IN ROTATING MACHINERY PROFESSIONAL ENGINEERING PUBLISHING LTD 2004 (2) 35 - 43 1356-1448 2004 [Refereed]
     
    This paper reports an experimental and theoretical study on the stability of an elastic rotor supported in tilting-pad journal bearings, with two different types of bearing support, that is, the simple bearing support and the fixed bearing support. The former allows the bearings to tilt in the housing, following the dynamic tilt motion of the journal due to shaft whirling in the elastic shaft bending mode and resulting in negligibly small amount of the oil film moment acting on the journal. On the other hand, the latter does not allow the tilt motion of the bearings, generating significant amount of the oil film moment acting on the journal. The rotor with the fixed bearing support was found experimentally to turn unstable at higher shafts speeds, while that with the simple bearing support remained stable throughout the experiments conducted. A newly derived theoretical model corresponding to the case of the fixed bearing support was found to explain the stability behaviour observed in the experiments.
  • 金子 覚; 船久保 弥; 田浦 裕生
    年次大会講演資料集 一般社団法人日本機械学会 3 350 - 352 2003
  • H Taura; M Tanaka; K Suzuki
    SEVENTH INTERNATIONAL CONFERENCE ON VIBRATIONS IN ROTATING MACHINERY PROFESSIONAL ENGINEERING PUBLISHING LTD 2000 (6) 403 - 414 1356-1448 2000 [Refereed]
     
    This paper studies the stability characteristics of a rigid rotor supported in tilting-pad journal bearings theoretically. Stability charts for a rigid rotor supported in tilting-pad journal bearings are obtained with a full set of linear rotordynamic coefficients, and the effects of preload factor, pad inertia and load direction on the stability are discussed. Tilting-pad journal bearings with low preload factor are found to cause oil whip even if pad inertia is negligibly small. Pad inertia lowers the stability threshold, and load direction affects the shape of the unstable operation regions in the stability charts.
  • Friction Characteristics of an oil-immersed clutches-Viscosity increase in thin films with additives
    Taura, H; Kimura, Y
    1996 pp.26-29. 26 - 29 1996/10 [Refereed]

Books etc

  • 数値解析と表面分析によるトライボロジーの解明と制御
    佐々木信 (Joint work8章3節)テクノシステム 2018
  • 挑戦こそが成功の鍵 科学者が問いかける先端工学の３１の“なぜ”
    吉川敏則; 末松久幸 (Contributor9章1項)近代科学社 2010/04

Conference Activities & Talks

  • Dynamic Characteristics of Journal Bearings Considering Mass-Conservation  [Not invited]
    Taura H
    18th EDF/Pprime Workshop  2019/10  PARIS  Pprime
  • 多孔質材料を用いた低電流用電気しゅう動接点のトライボ ロジー特性  [Not invited]
    吉田 浩之; 金子 覚; 田浦 裕生; 境野 恵理
    2019年度日本機械学会年次大会  2019/09  JSME
  • 部分ねじ溝付き液膜環状シールの静および動特性に及ぼすリード角の影響  [Not invited]
    田浦裕生; 金子覚; 渡邉徳仁; 山内笙平
    Dynamic and Design Conference 2019 論文集  2019/08  JSME
  • Effect of textured region on the static and dynamic characteristics of partially textured bearings  [Not invited]
    Taura H
    International Conference on Mechanical Power Transmission 2019 (ICMPT2019)  2019/07  IITMadrass
  • テクスチャ付きジャーナル軸受の動特性に及ぼすテクスチャ領域の影響  [Not invited]
    平岩凌一; 田浦裕生
    日本機械学会 北陸信越支部第 55 期総会・講演会講演論文集  2019/03  JSME
  • シリコーン/CNT 複合シートに含まれる CNT 複合量の増 加における引き離し力の変化  [Not invited]
    柳澤憲史; 黒岩岳大; 田浦裕生
    日本機械学会 北陸信越支部第 55 期総会・講演会講演論文集  2019/03  JSME
  • ティルティングパッドジャーナル軸受の静圧動圧ハイブリッド運転における静および動特性解析  [Not invited]
    林 敏也; 田浦裕性
    日本機械学会 北陸信越支部第 55 期総会・講演会講演論文集  2019/03  JSME
  • 部分ねじ溝付き液膜環状シールの静および動特性  [Not invited]
    渡邉徳仁; 山内笙平; 金子覚; 田浦裕生
    日本機械学会 北陸信越支部第 55 期総会・講演会講演論文集  2019/03  JSME
  • 円弧溝付き多孔質ディスクを用いた電気しゅう動接点の摩擦および通電特性に関する実験的解析  [Not invited]
    平政弘; 金子覚; 田浦裕生
    日本機械学会 北陸信越支部第 55 期総会・講演会講演論文集  2019/03  JSME
  • 円弧溝付き多孔質ディスクと球面ライダで構成された電気しゅう動接点の潤滑特性に関する数値解析  [Not invited]
    LUU VAN MANH; 金子覚; 田浦裕生
    日本機械学会 北陸信越支部第 55 期総会・講演会講演論文集  2019/03  JSME
  • すべり軸受の動特性に及ぼす質量流量保存則の影響  [Not invited]
    岡田侑人; 田浦裕生; 金子覚
    トライボロジー会議2018秋伊勢予稿集  2018/11  JAST
  • 部分テクスチャ軸受の最適テクスチャ領域  [Not invited]
    田浦裕生; 金子覚
    トライボロジー会議2018秋伊勢予稿集  2018/11  JAST
  • 質量流量保存則を考慮したジャーナル軸受 油膜の動特性の計算 −給油位置の影響−  [Not invited]
    田浦裕生; 岡田侑人; 金子覚
    第８０回ターボ機械協会学術講演会  2018/10  ターボ機械協会
  • Effect of Texture Region on the Static and Dynamic Characteristic of Partially Textured Journal Bearings  [Not invited]
    Taura H
    IFToMM 2018 Rotordynamics  2018/09  IFToMM
  • 湿度環境における PFPE 系グリースの摩擦特性に 対する基油分子構造の影響  [Not invited]
    吉田浩之; 金子覚; 田浦裕生; 境野恵理
    2018 年度 日本機械学会年次大会  2018/09  JSME
  • 静圧動圧ハイブリッドティルティングパッドジャーナル軸受の潤滑特性  [Not invited]
    林 敏也; 田浦裕性; 荒川 満
    Dynamic and Design Conference 2018  2018/08  JSME
  • テクスチャ付きジャーナル軸受の静特性に 及ぼすテクスチャ領域の影響  [Not invited]
    田浦裕性
    トライボロジー会議2018春東京予稿集  2018/05  JAST
  • ハイブリッド型ティルティングパッドジャーナル軸受の熱流体解析  [Not invited]
    林 敏也; 田浦裕性; 荒川 満
    トライボロジー会議2019春東京予稿集  2018/05  JAST
  • ステータ表面に穴パターンを有する液膜環状シールの静 および動特性に関する数値解析  [Not invited]
    長谷川秀一; 金子覚; 田浦裕生
    日本機械学会 北陸信越支部第 55 期総会・講演会講演論文集  2018/03  JSME
  • 円周方向溝付き多孔質ディスクを用いた電気しゅう動接 点のトライボロジー特性  [Not invited]
    畔柳健斗; 金子覚; 田浦裕生
    日本機械学会 北陸信越支部第 55 期総会・講演会講演論文集  2018/03  JSME
  • 軸方向に部分的にねじ溝を設けた液膜環状シールの静および動特性に関する実験的解析  [Not invited]
    小磯和樹; 金子覚; 田浦裕生
    日本機械学会 北陸信越支部第 55 期総会・講演会講演論文集  2018/03  JSME
  • 疎水性表面におけるスリップ長さと接触角の関係  [Not invited]
    田上友樹; 田浦裕生; 金子覚
    日本機械学会 北陸信越支部第 55 期総会・講演会講演論文集  2018/03  JSME
  • 部分テクスチャ付きジャーナル軸受の負荷容量に及ぼす テクスチャ領域の影響  [Not invited]
    渡辺智貴; 田浦裕生; 金子覚
    日本機械学会 北陸信越支部第 55 期総会・講演会講演論文集  2018/03  JSME
  • 平行な疎水性二平面間に形成された水滴のせん断特性の簡易計算手法  [Not invited]
    今井綾; 田浦裕生; 金子覚
    日本機械学会 北陸信越支部第 55 期総会・講演会講演論文集  2018/03  JSME
  • Effect of Dimple Depth on the Dynamic Characteristics of Fully Textured Journal bearings  [Not invited]
    Taura, H; Yamada, H; Kaneko, S
    16th EDF/Pprime Workshop  2017/10  PPrime
  • すべり軸受の安定性  [Not invited]
    田浦裕生
    トライボロジー会議2017秋高松予稿集  2017/10  JAST
  • Effect of Reynolds number on the static characteristics of fully textured journal bearings  [Not invited]
    Taura, H; Yamada, H; Kaneko, S
    World Tribology Conference 2018  2017/09  JAST
  • PTFE 系グリースのトライボケミカル反応と摩擦特性に対する湿度の影響  [Not invited]
    吉田浩之; 金子覚; 田浦裕生; 境野恵理
    2017年度日本機械学会年次大会  2017/09  JSME
  • 軸方向に部分的にねじ溝を設けたシールの静および動特性に関する数値解析（ねじ溝の長さによる影響）  [Not invited]
    長井啓介; 金子覚; 田浦裕生; 渡邊裕輔
    Dynamic and Design Conference 2017 論文集  2017/08  JSME
  • ジャーナル軸受の油膜動特性における質量保存則の影響  [Not invited]
    田浦裕生; 金子覚
    トライボロジー会議201７春東京予稿集  2017/05  JAST
  • アコースティックエミッションを用いたすべり出しの検出に関する研究  [Not invited]
    中山 和樹; 田浦 裕生; 金子 覚
    日本機械学会 北陸信越支部第 54 期総会・講演会講演論文集  2017/03  JSME
  • ジャーナル軸受の油膜動特性に及ぼす周囲圧力の影響  [Not invited]
    浅野 涼; 田浦 裕生; 金子 覚
    日本機械学会 北陸信越支部第 54 期総会・講演会講演論文集  2017/03  JSME
  • 四角穴付きシールの静および動特性に関する実験的解析−(穴配列および穴数の影響)−  [Not invited]
    安達 大輔; 金子 覚; 田浦 裕生
    日本機械学会 北陸信越支部第 54 期総会・講演会講演論文集  2017/03  JSME
  • 人工股関節を模擬した球面軸受の潤滑特性に関する数値解析−（軸受傾斜角度の影響）−  [Not invited]
    阿部浩明; 金子 覚; 田浦 裕生
    日本機械学会 北陸信越支部第 54 期総会・講演会講演論文集  2017/03  JSME
  • 疎水性表面間に形成された水滴のせん断特性の実験的解析  [Not invited]
    高野優斗; 田浦 裕生; 金子 覚
    日本機械学会 北陸信越支部第 54 期総会・講演会講演論文集  2017/03  JSME
  • 電気しゅう動接点におけるライダ表面に設けた溝が通電および摩擦特性に及ぼす影響に関する実験的解析  [Not invited]
    村上 公仁; 金子 覚; 田浦 裕生
    日本機械学会 北陸信越支部第 54 期総会・講演会講演論文集  2017/03  JSME
  • Core Elements Test Bench for Turbo-Engines  [Not invited]
    Obikane, Y; Oyunbat Gansukh; Enkhbold Tumer; Taura, H
    The 2017 Asia-Pacific International Symposium on Aerospace Technology  2016/10
  • Experimental investigation on dynamic characteristics of textured journal bearing with square-dimples  [Not invited]
    Yamada, H; Taura, H; Kaneko, S; Ibe, S
    IMechE 11th International Conference on Vibrations in Rotating Machinery  2016/09  IMechE
  • Experimental study on static and dynamic characteristics of helically grooved seals  [Not invited]
    Nagai, K; Mitsukawa; S. Kaneko; S. Taura, H; Watanabe, Y
    IMechE 11th International Conference on Vibrations in Rotating Machinery  2016/09  IMechE
  • 四角穴付きジャーナル軸受の負荷容 量に関する実験的解析  [Not invited]
    田浦裕生; 山田博之; 井部将吾; 金子覚
    第16回 日本機械学会 機素潤滑設計部門講演会  2016/04  JSME
  • すべり出し時に発生するアコースティックエミッション の実験的解析  [Not invited]
    横尾友彦; 田浦裕生; 金 子覚
    日本機械学会 北陸信越支部第 53 期総会・講演会講演論文集  2016/03  JSME
  • スリップ流れ領域がスライダ軸受の潤滑特性に及ぼす影 響  [Not invited]
    渡邉翔太; 金子覚; 田浦 裕生
    日本機械学会 北陸信越支部第 53 期総会・講演会講演論文集  2016/03  JSME
  • テクスチャ付きジャーナル軸受の静及び動特性に関する 実験的解析  [Not invited]
    井部将吾; 田浦裕生; 金子覚; 山田博之
    日本機械学会 北陸信越支部第 53 期総会・講演会講演論文集  2016/03  JSME
  • ねじ溝付きシールの静および動特性に関する実験的解析 (ねじ溝のリード角および深さが特性に及ぼす影響)  [Not invited]
    三川澄人; 金子覚; 田浦 裕生
    日本機械学会 北陸信越支部第 53 期総会・講演会講演論文集  2016/03  JSME
  • 四角穴付きシールの静および動特性に関する数値解析 (穴の配列が特性に及ぼす影響)  [Not invited]
    森末光晴; 金子覚; 田浦 裕生
    日本機械学会 北陸信越支部第 53 期総会・講演会講演論文集  2016/03  JSME
  • Effect of supply oil flow rate on the dynamic characteristics of oil lubricated journal bearings  [Not invited]
    Taura, H
    International Gas Turbine Conference 2016  2015/10
  • Effect of Textured Area on Dynamic Characteristics of Journal Bearings with Square-Dimples  [Not invited]
    H. Yamada; H. Taura; S. Kaneko
    Proceedings of International Tribology Conference(ITC), Tokyo 2016  2015/09  JAST
  • ねじ溝付きシールの静および動特性に関する数値解析  [Not invited]
    長井啓介; 金子覚; 田浦裕生; 渡邊裕輔
    Dynamic and Design Conference 2015 論文集  2015/08  JSME
  • 四角穴テクスチャを有するジャーナル軸受の動特性に関する数値解析(すきま不連続部に生じる慣性効果およびエネルギー損失の影響)  [Not invited]
    山田博之; 田浦裕生; 金子覚
    Dynamic and Design Conference 2015 論文集  2015/08  JSME
  • 二平面間に形成された液滴のせん断時における力学的特性  [Not invited]
    田浦裕生; 金子覚
    トライボロジー会議2015春姫路予稿集  2015/05  JAST
  • Mechanical Properties of Non-asymmetric Liquid Droplet in Constrained Parallel Plate  [Not invited]
    ビンティニックハッサン ヌルシャミミ; 田浦裕生; 金子覚
    日本機械学会北陸信越支部52期総会・講演会講演論文集  2015/03  JSME
  • すべり摩擦時に発生する AE と荷重・速度の関係  [Not invited]
    加賀谷俊樹; 田浦裕生; 金子覚
    日本機械学会北陸信越支部52期総会・講演会講演論文集  2015/03  JSME
  • テクスチャ形成範囲がジャーナル軸受の動特性に及ぼす影響  [Not invited]
    山田博之田浦裕生; 金子覚
    日本機械学会北陸信越支部52期総会・講演会講演論文集  2015/03  JSME
  • ねじ溝付きシールの静および動特性に関する数値解析  [Not invited]
    長井啓介; 金子覚; 田浦裕生
    日本機械学会北陸信越支部52期総会・講演会講演論文集  2015/03  JSME
  • 円弧溝付きディスクを用いた電気しゅう動接点のトライボロジー特性  [Not invited]
    花岡裕也; 金子覚; 田浦裕生
    日本機械学会北陸信越支部52期総会・講演会講演論文集  2015/03  JSME
  • 人工関節を模擬した回転楕円体しゅう動面を有する軸受の潤滑特性  [Not invited]
    吉田健太郎; 金子覚; 田浦裕生
    日本機械学会北陸信越支部52期総会・講演会講演論文集  2015/03  JSME
  • しゅう動面に四角穴を有するジャーナル軸受の油膜動特性の数値解析  [Not invited]
    山田博之; 金子覚; 田浦裕生
    日本機械学会北陸信越支部第 51 期総会・講演会講演論文集  2014/03  JSME
  • すべり摩擦時に発生するAEに及ぼす添加剤の影響  [Not invited]
    高畦千翔; 田浦裕生; 金子覚
    日本機械学会北陸信越支部第 51 期総会・講演会講演論文集  2014/03  JSME
  • ねじ溝付きシールの静特性に関する数値解析  [Not invited]
    高橋竜矢; 金子覚; 田浦裕生
    日本機械学会北陸信越支部第 51 期総会・講演会講演論文集  2014/03  JSME
  • ねじ溝付きシールの力学的特性に関する実験的研究  [Not invited]
    星野孝雄; 金子覚; 田浦裕生
    日本機械学会北陸信越支部第 51 期総会・講演会講演論文集  2014/03  JSME
  • 円弧溝付きディスクを用いた電気しゅう動接点の潤滑特性  [Not invited]
    深澤良輔; 金子覚; 田浦裕生
    日本機械学会北陸信越支部第 51 期総会・講演会講演論文集  2014/03  JSME
  • 人工関節を模擬したしゅう動面に溝を有する半球軸受の潤滑特性  [Not invited]
    南光良; 金子覚; 田浦裕生
    日本機械学会北陸信越支部第 51 期総会・講演会講演論文集  2014/03  JSME
  • ねじ溝付きシールの静および動特性に関する実験的研究  [Not invited]
    長井啓介; 星野孝雄; 金子覚; 田浦裕生
    Dynamic and Design Conference 2014 論文集  2014  JSME
  • 四角状テクスチャ付きジャーナル軸受の動特性係数に関する数値解析  [Not invited]
    山田博之; 金子覚; 田浦裕生
    Dynamic and Design Conference 2014 論文集  2014  JSME
  • 摩擦時に発生するアコースティックエミッションに及ぼす添加剤の影響  [Not invited]
    田浦裕生; 高畦千佳; 金子覚
    トライボロジー会議2014秋盛岡予稿集  2014  JAST
  • すべり摩擦時に発生するAEに及ぼす境界潤滑膜の影響  [Not invited]
    高畦千翔; 田浦裕生; 金子覚
    第21回日本機械学会機械材料・材料加工技術講演会論文集  2013/11  JSME
  • 氷点下における焼結含油軸受の摩擦性能と潤滑油の流動性に関する解析(軸受の透過率と軸受すきまの油膜状態の関係)  [Not invited]
    吉田浩之; 金子覚; 田浦裕生
    2013年度日本機械学会年次大会講演論文集  2013/09  JSME
  • すべり摩擦時のアコースティック・エミッションと摩擦条件の関係  [Not invited]
    辻井佑平; 田浦裕生; 金子覚
    日本機械学会北陸信越支部第 50 期総会・講演会講演論文集  2013/03  JSME
  • 円周方向溝付きディスクを用いた電気しゅう動接点の潤滑特性  [Not invited]
    金井仁志; 深澤良輔; 金子覚; 田浦裕生
    日本機械学会北陸信越支部第 50 期総会・講演会講演論文集  2013/03  JSME
  • 溝付き球面軸受を用いた人工関節の潤滑特性  [Not invited]
    有安孝浩; 金子覚; 田浦裕生
    日本機械学会北陸信越支部第 50 期総会・講演会講演論文集  2013/03  JSME
  • 四角穴シールにおける穴寸法が力学的特性に及ぼす影響  [Not invited]
    森田誠大; 金子覚; 田浦裕生
    日本機械学会北陸信越支部第 50 期総会・講演会講演論文集  2013/03  JSME
  • 四角穴パターンを有する液膜シールの静および動特性に関する数値解析  [Not invited]
    高橋竜矢; 森田誠大; 金子覚; 田浦裕生
    Dynamic and Design Conference 2013 論文集  2013  JSME
  • 四角穴付きジャーナル軸受における動特性の数値解析  [Not invited]
    山田博之; 田浦裕生; 金子覚
    Dynamic and Design Conference 2013 論文集  2013  JSME
  • 球状ライダと多孔質ディスクを用いた電気しゅう動接点の潤滑特性―球状ライダの曲率半径が潤滑特性に及ぼす影響―  [Not invited]
    金井仁志; 笠井俊幸; 金子覚; 田浦裕生
    2012年度日本機械学会年次大会講演論文集  2012/09  JSME
  • 四角穴シールの静および動特性  [Not invited]
    森田誠大; 罍貴頼; 金子覚; 田浦裕生
    2012年度日本機械学会年次大会講演論文集  2012/09  JSME
  • 氷点下における焼結含油軸受の摩擦性能と潤滑油の流動性に関する解析  [Not invited]
    吉田浩之; 金子覚; 田浦裕生
    2012年度日本機械学会年次大会講演論文集  2012/09  JSME
  • Dependence of AE on Friction Condition under Sliding Friction  [Not invited]
    Y. Tsujii; H. Taura; S. Kaneko
    Proceedings of the 3rd Asian Symposium on Materials and Processing (ASMP2013)  2012/08
  • すべり摩擦時に発生するAEと摩擦係数の関係  [Not invited]
    辻井佑平; 田口恭輔; 田浦裕生; 金子覚
    トライボロジー会議2012春東京予稿集  2012/04  JAST
  • 多孔質含油材料の電気しゅう動接点への適用  [Not invited]
    金井仁志; 笠井俊幸; 金子覚; 田浦裕生
    トライボロジー会議2012春東京予稿集  2012/04  JAST
  • スターブ潤滑下における真円ジャーナル軸受の油膜動特性に関する実験的解析  [Not invited]
    前田翔; 金子覚; 田浦裕生
    日本機械学会北陸信越支部第 49 期総会・講演会講演論文集  2012/03  JSME
  • すべり摩擦時に発生するAEに及ぼす摩擦条件の影響  [Not invited]
    田口恭輔; 田浦裕生; 金子覚
    日本機械学会北陸信越支部第 49 期総会・講演会講演論文集  2012/03  JSME
  • 球状ライダと多孔質ディスクを用いた電気しゅう動接点の潤滑特性  [Not invited]
    笠井俊幸; 金子覚; 田浦裕生
    日本機械学会北陸信越支部第 49 期総会・講演会講演論文集  2012/03  JSME
  • 四角穴シールの力学的特性に関する数値解析  [Not invited]
    罍貴頼; 金子覚; 田浦裕生
    日本機械学会北陸信越支部第 49 期総会・講演会講演論文集  2012/03  JSME
  • Development of Contact Detection Method Using Acoustic Emission under Sliding Friction  [Not invited]
    H. Taura; K. Taguchi; Y. Tsujii; S. Kaneko
    Proceedings of International Gigaku Conference in Nagaoka 2012(IGCN2013)  2012/02
  • Effect of Sliding Speed and Load on AE Characteristics  [Not invited]
    K. Taguchi; H. Taura; S. Kaneko
    the International Tribology Conference(ITC), Hiroshima 2012  2011/10  JAST
  • 氷点下における焼結含油軸受の摩擦性能の解析  [Not invited]
    吉田浩之; 金子覚; 田浦裕生
    2011年度日本機械学会年次大会講演論文集  2011/09  JSME
  • すべり摩擦時に発生するAE信号に及ぼす潤滑油粘度の影響  [Not invited]
    田口恭輔; 田浦裕生; 金子覚
    トライボロジー会議2011春東京予稿集  2011/04  JAST
  • すべり摩擦時に発生するAEと荷重・すべり速度の関係  [Not invited]
    田口恭輔; 田浦裕生; 金子覚
    日本機械学会北陸信越支部第 48 期総会・講演会講演論文集  2011/03  JSME
  • 球面軸受を用いた人工関節の潤滑特性に関する数値解析  [Not invited]
    太田侑斗; 田浦裕生; 金子覚
    日本機械学会北陸信越支部第 48 期総会・講演会講演論文集  2011/03  JSME
  • 多孔質含油材料を用いた電気しゅう動接点の潤滑特性に関する数値解析  [Not invited]
    植田巧人; 金子覚; 田浦裕生
    日本機械学会北陸信越支部第 48 期総会・講演会講演論文集  2011/03  JSME
  • 二溝付真円ジャーナル軸受の静および動特性に関する実験的研究  [Not invited]
    串橋卓也; BIN ABDULLAH Mohd Hermy; 金子覚; 田浦裕生
    日本機械学会北陸信越支部第 48 期総会・講演会講演論文集  2011/03  JSME
  • 平行溝付きシールの力学的特性に関する数値解析  [Not invited]
    東野哲也; 松橋拓也; 金子覚; 田浦裕生
    日本機械学会北陸信越支部第 48 期総会・講演会講演論文集  2011/03  JSME
  • すべり摩擦時に発生するAEに及ぼす荷重・すべり速度の影響  [Not invited]
    田口恭輔; 田浦裕生; 金子覚
    第18回日本機械学会機械材料・材料加工技術講演会論文集  2010/11  JSME
  • 摩擦時に発生するAEにおよぼす運転条件の影響  [Not invited]
    田口恭輔; 田浦裕生; 金子覚
    トライボロジー会議2010秋福井予稿集  2010/09  JAST
  • 産学連携ものづくりフロー実践に基づく設計教育プログラムの開発  [Not invited]
    磯部浩巳; 藤野俊和; 阿部雅二朗; 田浦裕生; 田中秀岳; 柳和久
    Designシンポジウム2010講演論文集  2010/08
  • アコースティックエミッションによる固体接触の検出  [Not invited]
    田浦裕生; 近藤喜大; 金子覚
    第10回日本機械学会機素潤滑設計部門講演会講演論文集  2010/04  JSME
  • 多孔質含油材料の電気しゆう動接点への適用  [Not invited]
    田浦裕生; 海老根亮; 金子覚
    第10回日本機械学会機素潤滑設計部門講演会講演論文集  2010/04  JSME
  • しゆう動面に粘弾性体を用いたジャーナル軸受の変動荷重及び変動軸回転速度下における潤滑特性  [Not invited]
    山崎和也; 田浦裕生; 金子覚
    日本機械学会北陸信越支部第 47 期総会・講演会講演論文集  2010/03  JSME
  • すべり摩擦時に発生するAEの固体接触検出能力に関する研究  [Not invited]
    近藤喜大; 田浦裕生; 金子覚
    日本機械学会北陸信越支部第 47 期総会・講演会講演論文集  2010/03  JSME
  • 多孔質含油材料を用いた電気しゅう動接点の潤滑特性  [Not invited]
    海老根亮; 田浦裕生; 金子覚
    日本機械学会北陸信越支部第 47 期総会・講演会講演論文集  2010/03  JSME
  • 流出側しゅう動面に半径方向円孔を有する平行環状シールの力学的特性  [Not invited]
    竹内和也; 金子覚; 田浦裕生
    日本機械学会北陸信越支部第 47 期総会・講演会講演論文集  2010/03  JSME
  • 摩擦時に発生するAEと接触電気抵抗の比較  [Not invited]
    田浦裕生; 丸田悠介; 金子覚
    トライボロジー会議2009春東京予稿集  2009/04  JAST
  • 滑り摩擦時におけるAEの固体接触検出性能  [Not invited]
    丸田悠介; 田浦裕生; 金子覚
    日本機械学会北陸信越支部第 46 期総会・講演会講演論文集  2009/03  JSME
  • 多孔質含油材料の電気しゅう動接点への適用  [Not invited]
    吉田圭輔; 田浦裕生; 金子覚
    日本機械学会北陸信越支部第 46 期総会・講演会講演論文集  2009/03  JSME
  • アコースティックエミッションを用いた摩擦中の固体接触検出に関する研究  [Not invited]
    近藤喜大; 田浦裕生; 金子覚
    第17回日本機械学会機械材料・材料加工技術講演会論文集  2009  JSME
  • ウェットブラスト処理面の摩擦特性  [Not invited]
    田浦裕生; 松原亨
    トライボロジー会議2008秋名古屋予稿集  2008/09  JAST
  • しゅう動面に凹凸を有する非接触シールの力学的特性‐集中格子を用いた数値解析‐  [Not invited]
    上田範吉; 金子覚; 田浦裕生
    日本機械学会北陸信越支部第 45 期総会・講演会講演論文集  2008/03  JSME
  • 滑り摩擦時に発生するAEと潤滑膜厚さの関係  [Not invited]
    田中洋輔; 田浦裕生; 金子覚
    日本機械学会北陸信越支部第 45 期総会・講演会講演論文集  2008/03  JSME
  • すべり摩擦時に発生するAEに及ぼすPFPE潤滑膜の影響  [Not invited]
    田浦裕生; 渡部哲也; 金子覚
    第15回日本機械学会機械材料・材料加工技術講演会講演論文集  2007/11  JSME
  • AEを用いた極薄潤滑膜の摩耗過程の評価  [Not invited]
    渡部哲也; 田浦裕生; 金子覚
    日本機械学会北陸信越支部第 44 期総会・講演会講演論文集  2007/03  JSME
  • しゅう動面に四角穴パターンを有する平行ダンパシールの力学的特性  [Not invited]
    辺見耕太; 金子覚; 田浦裕生
    日本機械学会北陸信越支部第 44 期総会・講演会講演論文集  2007/03  JSME
  • 回転する多孔質ゴム円板と剛体面間に形成されたスクイズフィルムの潤滑特性に関する実験的研究  [Not invited]
    福井章二; 金子覚; 田浦裕生
    日本機械学会北陸信越支部第 44 期総会・講演会講演論文集  2007/03  JSME
  • 多孔質含油材料を用いたしゅう動接点の潤滑特性  [Not invited]
    湯野川豪; 金子覚; 田浦裕生
    日本機械学会北陸信越支部第 44 期総会・講演会講演論文集  2007/03  JSME
  • アコースティックエミッションを用いたPFPE潤滑膜の摩擦・摩耗に関する研究  [Not invited]
    古賀大士; 田浦裕生; 金子覚
    日本機械学会北陸信越支部第 43 期総会・講演会講演論文集  2006/03  JSME
  • 回転する半径方向溝付き多孔質ゴム円板と剛体面間に形成されたスクイズフィルムの潤滑特性  [Not invited]
    越村雅; 金子覚; 田浦裕生
    日本機械学会北陸信越支部第 43 期総会・講演会講演論文集  2006/03  JSME
  • せん断下におけるPFPE潤滑薄膜の流動特性  [Not invited]
    清水文彰; 田浦裕生; 川口雅弘; 金子覚; 加藤孝久
    日本機械学会北陸信越支部第 42 期総会・講演会講演論文集  2005/03  JSME
  • 四角穴を有するダンパシールの力学的特性  [Not invited]
    松村浩次; 矢嶋哲郎; 金子覚; 田浦裕生
    日本機械学会北陸信越支部第 42 期総会・講演会講演論文集  2005/03  JSME
  • AEによる2分子層潤滑膜の摩耗過程の観察  [Not invited]
    田浦裕生; 高木聡彦; 川口雅弘; 金子覚; 加藤孝久
    トライボロジー会議2004春東京予稿集  2004/04  JAST
  • アコースティックエミッションを用いたPFPE潤滑膜の摩耗過程の基礎的研究  [Not invited]
    高木聡彦; 田浦裕生; 川口雅弘; 加藤孝久; 金子覚
    日本機械学会北陸信越支部第 41 期総会・講演会講演論文集  2004/03  JSME
  • すべり及びスクイーズ運動下における多孔質ゴムの潤滑特性  [Not invited]
    船久保弥; 金子覚; 田浦裕生
    日本機械学会北陸信越支部第 41 期総会・講演会講演論文集  2004/03  JSME
  • 多孔質軸受における運転時間に伴う含油率の減損に関する理論的解析  [Not invited]
    野田善友; 金子覚; 田浦裕生
    日本機械学会北陸信越支部第 41 期総会・講演会講演論文集  2004/03  JSME
  • AEによる2分子層潤滑膜の摩耗過程の観察  [Not invited]
    田浦裕生; 川口雅弘; 金子覚; 加藤孝久
    トライボロジー会議2003秋新潟予稿集  2003/10  JAST
  • ティルティングパッドジャーナル軸受で支持された弾性軸の安定性に関する研究  [Not invited]
    田浦裕生; 田中正人
    日本機械学会機械力学・計測制御部門講演会論文集  2003/09  JSME
  • ティルティングパッドジャーナル軸受で支持された弾性軸の安定性に関する研究  [Not invited]
    田浦裕生; 田中正人
    日本機械学会機械力学・計測制御部門講演会論文集  2003  JSME
  • ティルティングパッドジャーナル軸受の安定性に関する研究 第2報 実験結果)  [Not invited]
    田浦裕生; 田中正人; 鈴木健司
    日本機械学会機械力学・計測制御部門講演会論文集  2001  JSME
  • ティルティングパッドジャーナル軸受の安定性に関する研究 第一報  [Not invited]
    田浦裕生; 田中正人; 鈴木健司
    日本機械学会機械力学・計測制御部門講演会論文集  1999/03  JSME
  • 潤滑油薄膜の膜厚・粘度測定 (第2報) 添加剤の影響  [Not invited]
    田浦裕生; 木村好次; 杉村丈一
    トライボロジー会議1996秋北九州予稿集  1996/09  JAST
  • 潤滑油薄膜の膜厚・粘度測定  [Not invited]
    田浦裕生; 木村好次; 杉村丈一
    トライボロジー会議1996春東京予稿集  1996/04  JAST

MISC

Research Grants & Projects

  • 日本学術振興会：科学研究費助成事業
    Date (from‐to) : 2022/04 -2025/03 
    Author : 田浦 裕生
  • Japan Society for the Promotion of Science：Grants-in-Aid for Scientific Research
    Date (from‐to) : 2021/04 -2024/03 
    Author : 磯部 浩已; 原 圭祐; 田浦 裕生; 河野 大輔; 櫻田 陽
     
    摺動面のトライボロジー特性改善の手法として表面テクスチャリングが知られている．本研究の目的は，機械加工で生産される高精度で複雑な部品の表面に，高い機能性を有するマイクロテクスチャを，超音波切削加工によって整列配置して創成する技術の開発である．切削工具の振動状態を超音波周波数に比して充分に高速，かつ被削材送り運動に対して高精度に同期させることで，ピッチ数～数十μm，深さ数μmの整列配置されたマイクロテクスチャを工作機械で創成するシステムを構築する．切削による成形仕上げ加工と同時にテクスチャリングできるので，生産性を落とすことなく機能性表面を創成できる点が大きな特長である． 今年度は、超音波励振信号の発振タイミングを主軸回転角と同期するよう補正することで，テクスチャ配列を制御するシステムを提案した．超音波帯域（28kHz）の交番電圧の位相を制御するため，超音波振動の周期（36マイクロ秒）に比して十分に短い制御周期が要求される．ここでは，FPGAを用いて，制御システムを構築した．加工されたテクスチャのピッチは，理論値である切削ピッチPth = 47.8μm，送りピッチFth = 30μmと一致し，本手法によるテクスチャ創成が可能であることを確認できた．ピッチ間隔に対する理想的な整列状態からの位置ずれをテクスチャ配列のずれと定義した.テクスチャの切削方向の位置ずれはテクスチャの重心位置から近似直線を求め，重心位置と近似直線との差の平均(N=25～45)として算出した．補正を行わない場合，テクスチャは様々なパラメータ変動によってランダムな配置となり，配列のずれは16.6%であった．一方，超音波振動の位相補正によって，格子配列は整列配置され，ずれは 3.0%となり，本手法の有効性が確認できた．今後は，テクスチャの整列配置がトライボロジ特性に与える影響を実験的に検証する．

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