Search Results 1-20 of 75

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  • Friction Laws Determination of Random-Textured Surface of Microcrystalline Diamond Coatings, Using the Oscillating Tribometer Technique

    Belin Michel , Miki Hiroyuki , Takagi Toshiyuki

    … Therefore, it is possible to determine friction value and its sliding speed dependency, i.e. a kind of "Stribeck curve" under non-stationary conditions. … Polycrystalline diamond films are deposited by the Hot Filament CVD method on SiC substrate, which were partly polished and finished to gradient surface roughness with random-textured asperities. … The different contributions to friction of the surface roughness are analyzed and discussed. …

    Tribology Online 14(3), 109-114, 2019

    J-STAGE 

  • The Circle Diagram in the Group Velocity Domain for Rossby Wave under the Horizontally Non-Uniform Flow

    Li Yanjie , Feng Jin , Li Jianping , Zhao Sen

    … <p>Rossby wave propagation theory is reviewed under two kinds of non-uniform basic flows: the zonal mean (ZM) and horizontally non-uniform (HN) flows in this study. … The diagrams in the wavenumber domain for stationary and non-stationary waves embedded in the ZM flow are given and discussed in comparison with previous studies. …

    SOLA 14(0), 121-125, 2018

    J-STAGE 

  • Hilbert-Huang Transform applied on Vibration Analyzing in End-Milling Process  [in Japanese]

    Liu Chia-Hung

    … To the cutting process, an important factor that infects qualities, such as accuracy and surface characteristic, is vibration. … in 1998, which is well at solving non-linear and non-stationary data due to its adaptation. …

    Proceedings of JSPE Semestrial Meeting 2015A(0), 425-426, 2015

    J-STAGE 

  • New insights into seismic behavior of building and surrounding soil at Hamaoka nuclear power station during Suruga Bay earthquake in 2009

    Kamagata S. , Takewaki I.

    … The records in the underground support the fact that the vibration amplification was caused in the surface soil from 25 to 100 m beneath the reactor building. … The non-stationary Fourier spectra clarified that the frequency of the dominant component shifted from 3.0 Hz to 2.5 Hz in the short transient time. …

    Soil Dynamics and Earthquake Engineering (53), 73-91, 2013-10

    IR 

  • The Proposal of Real-Time Data Processing Methods for Non-Stationary Vibration Including Conversion of the Time and Spatial Frequency Corresponding to Change of Vehicle Speed  [in Japanese]

    SAKATA Kohji , YOSHIMURA Takuya

    … The smoothness of the pavement surface plays a key role for the comfort evaluation of the freeway under a vehicle running condition. … IRI (International Roughness Index) is defined as the index to estimate the ride quality of the vehicle running by evaluating the smoothness of the road surface. … Authors have developed the IRI instrumentation system by which the road surface profile can be estimated even when the vehicle velocity changes while running. …

    TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C 79(801), 1602-1615, 2013

    J-STAGE 

  • On the maximal L_p -L_p regularity of the Stokes problem with first order boundary condition ; model problems

    SHIBATA Yoshihiro , SHIMIZU Senjo

    … regularity of the Stokes equation with first order boundary condition in the half-space, which arises in the mathematical study of the motion of a viscous incompressible one phase fluid flow with free surface. … regularity of the non-stationary Stokes. …

    Journal of the Mathematical Society of Japan 64(2), 561-626, 2012-04-01

    J-STAGE  References (56)

  • 110 Detection of structural damages by inverse analysis of thermal images captured by thermography with active heating  [in Japanese]

    SUZUKI Katsuya , MASUDA Arata

    … This paper presents a method to identify the geometrical shape and the location of the defect embedded in a concrete structure by processing nonstationary thermal images of the structural surface captured by an infrared thermography camera. … In the proposed method, the structure is modeled as a homogeneous infinite plate whose boundary condition on the observed surface is known. …

    The Proceedings of the Symposium on Evaluation and Diagnosis 2012.11(0), 50-54, 2012

    J-STAGE 

  • 624 Real-time data processing methods for non-stationary vibration using mutual conversion between time and spatial frequency  [in Japanese]

    SAKATA Kohji , YOSHIMURA Takuya

    … The smoothness of the pavement surface is concerned with the comfort which is at the time of a vehicle run on the freeway, and IRI(International Roughness index) is set as the index to estimate from the viewpoint of the ride quality of the vehicle which runs a road surface. …

    The Proceedings of the Dynamics & Design Conference 2012(0), _624-1_-_624-10_, 2012

    J-STAGE 

  • 621 Detection of Debonding Failure in a Structure by Inverse Analysis of Nonstationary Thermal Images  [in Japanese]

    SUZUKI Katsuya , MASUDA Arata

    … This paper presents a method to identify the geometrical shape and the location of the debonding failure embedded in a concrete structure by processing nonstationary thermal images of the structural surface captured by an infrared thermography camera. … In the proposed method, the structure is modeled as a homogeneous infinite plate whose boundary condition on the observed surface is known. …

    The Proceedings of the Dynamics & Design Conference 2012(0), _621-1_-_621-9_, 2012

    J-STAGE 

  • Estimation of fetal vector electrocardiography through blind source separation  [in Japanese]

    NABESHIMA Yuji , KIMURA Yoshitaka , ITO Takuya , SATO Naoaki , KARASHIMA Akihiro , KATAYAMA Norihiro , NAKAO Mitsuyuki

    胎児心疾患の診断において、心筋の電気生理学的活動を表す心電図は重要な情報源である。胎児心電図を非侵襲的に計測する方法として母体腹壁誘導が用いられる。得られた信号から胎児心電図を抽出する目的で近年独立成分分析(ICA)の適用が進んでいる。本研究では、母体腹壁誘導された信号から胎児心電図をICAを用いて抽出する際に、腹壁の動きや胎児の体動などの非定常要因や筋電図やノイズの混入によって分離信号が1チャネ …

    IEICE technical report. ME and bio cybernetics 111(314), 13-17, 2011-11-24

    Ichushi Web 

  • A Three-dimensional Camera : Development and Applications of a Three-dimensional Image Measurement System  [in Japanese]

    LU Cunwei , KAMITOMO Hiroya , SUN Ke , TSUJINO Kazuhiro , CHO Genki

    … Three-dimensional (3-D) image measurement is a technique that uses a digital camera to determine the shape and dimensions of the surface of an object. … The proposed 3-D camera can automatically adjust for variations in an object's size, form, surface color, and reflection characteristics and it can measure non-stationary objects. …

    IEEJ Transactions on Electronics, Information and Systems 131(2), 320-328, 2011-02-01

    J-STAGE  References (19)

  • S111013 Diagnosis for Brinelling on Tooth Surface of Micro Geared Motor Based on Wavelet Analysis  [in Japanese]

    Jiawei Ni , Horiuchi Toshihiro , Matsumoto Susumu

    … The research here aims to make an effort of diagnosis with comparing the result of FFT and wavelet transform to ensure the safe operation of equipment from non-stationary weak signals. …

    The Proceedings of Mechanical Engineering Congress, Japan 2011(0), _S111013-1-_S111013-5, 2011

    J-STAGE 

  • Study of Health Monitoring of Vehicle Structure by Using Feature Extraction based on Discrete Wavelet Transform  [in Japanese]

    TABATA Akihisa , AOKI Yoshio , ANDO Kazutaka , KATO Masataka

    … Though many researchers try to monitor a traffic congestion, weather condition, road surface condition and car maintenance by the on-board TV camera or the probe car system, sensor signals of these have non-stationary and transitory characteristics while the vehicle is in motion. …

    TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A 73(725), 10-17, 2007-01-25

    J-STAGE  References (7)

  • A Simulation Model of High Speed MAG Welding for Thin Plate  [in Japanese]

    YAMAZAKI Yosuke , MIYASAKA Fumikazu , OHJI Takayoshi

    … In the present work, a three dimensional (3-D), non-stationary thermal conduction model for thin plate is developed. … The temperature distribution in the base metal is calculated to estimate the molten pool size using a finite difference model based on the 3-D heat conduction equation, and the surface profile of the molten pool is calculated taking account of the balance of gravity, surface tension and arc pressure. …

    QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY 24(4), 368-372, 2006-11-05

    J-STAGE  References (13) Cited by (8)

  • AM06-10-015 Field observation of atmospheric turbulent fluxes on the tidal flat over the Ariake Sea  [in Japanese]

    TANAKA Kenji

    … This study is aimed to observe directly the atmospheric turbulent characteristics and heat energy transport into atmosphere on the tidal flat of the heterogeneous and non-stationary surface accordingly to the tidal motion. … Diurnal variation of the skin surface temperature was strongly controlled by tidal cycle. … The soil surface temperature was increased by more than 6degC within 2 or 3 hours during exposition of the bottom soil. …

    日本流体力学会年会講演論文集 2006, 114, 2006

    NDL Digital Collections 

  • Turbulent Characteristics of the atmospheric surface layer in the inter-tidal zone of the Ariake Sea

    Tanaka Kenji , Narimatsu Akira , Kentaro Morimoto , Takikawa Kiyoshi

    … Turbulence in the atmospheric surface layer controls the energy interaction between the sea surface and the atmosphere, and thus plays an important role in the formation of the current field and the circulation of subsidence in sea regions. … It is found that the Monin-Obukhov similarity theory is applicable to wind speed in the inter-tidal zone despite the heterogeneous and non-stationary surface characteristics. …

    Asian and Pacific Coasts 2005, September 4-8, 2005, Jeju, Korea, 1816-1829, 2005-09

    IR 

  • Extensive Seismic Intensity Distribution for Tonankai-Tokai Earthquake Based on Soil Profile Models for Surface Geology  [in Japanese]

    SUGITO Masata , KUSE Masumitsu

    … one is the simulation technique, EMPR, for non-stationary strong motion time histories on the upper surface of so-called engineering basemental rock, and the other is the seismic response analysis for the multi-layered surface ground model, FDEL, which incorporates the effect of frequency dependent equivalent strain characteristics on the shear rigidity and damping. …

    土と基礎 = Soil mechanics and foundation engineering 53(5), 26-28, 2005-05-01

    NDL Digital Collections  References (6)

  • Simulation Software of MAG Arc Welding for Butt Joint  [in Japanese]

    YAMAMOTO Takeshi , YAMAZAKI Yousuke , TSUJI Yoko , MIYASAKA Fumikazu , OHJI Takayoshi

    … In the present work, a three-dimensional (3-D), non-stationary thermal model for butt joint is developed. … The transient temperature distribution in the base metal is numerically analyzed to estimate the molten pool size using a finite differential model based on the heat flow equation, and the theoretical configuration of the molten pool is calculated, taking account of the balance of gravity, surface tension and arc pressure. …

    Quarterly journal of the Japan Welding Society. 23(1), 71-76, 2005-02-05

    References (15) Cited by (7)

  • Evaluations of Scaling Properties for Ge on Insulator MOSFETs in Nano-Scale

    Du Gang , Liu Xiao Yan , Xia Zhi Liang , Wang Ya Ke , Hou Dan Qiong , Kang Jin Feng , Han Ru Qi

    … The results indicate that both for n and p channel GOI MOSFETs have favorable scaling properties in nano-scale due to the non-stationary transport near source side especially for p channel device. … But the surface roughness scattering is a critical issue that might suppress the non-stationary transport. …

    Japanese Journal of Applied Physics 44(4B), 2195-2197, 2005

    J-STAGE 

  • Simulation Software of MAG Arc Welding for Butt Joint  [in Japanese]

    YAMAMOTO Takeshi , YAMAZAKI Yousuke , TSUJI Yoko , MIYASAKA Fumikazu , OHJI Takayoshi

    … In the present work, a three-dimensional (3-D), non-stationary thermal model for butt joint is developed. … The transient temperature distribution in the base metal is numerically analyzed to estimate the molten pool size using a finite differential model based on the heat flow equation, and the theoretical configuration of the molten pool is calculated, taking account of the balance of gravity, surface tension and arc pressure. …

    QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY 23(1), 71-76, 2005

    J-STAGE 

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