Search Results1-20 of  48

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  • Niitsuma Hiroaki ID: 9000242725697

    Articles in CiNii:1

    • 論文・報告転載 Application of Three Dimensional Time-Frequency Coherency Method to the Reflection Imaging in a Tunnel (2005)
  • NIITSUMA Hiroaki ID: 1000010108475

    Graduate School of Environmental Studies, Tohoku University (2012 from CiNii)

    Articles in CiNii:308

    • Evaluation of Microcracks in Rock by Differential Strain Curve Analysis (1995)
    • Analysis of Stress Intensity Factor of Core-based Fracture Toughness Test Specimens of Rock under Confining Pressure and Evaluation of K-resistance Curve (1995)
    • K-resistance Curve of Rock under Confining Pressure (1995)
  • NIITSUMA Hiroaki ID: 9000000166287

    Faculty of Engineering, Tohoku University (1996 from CiNii)

    Articles in CiNii:1

    • Dispersion analysis for waves propagated in fractured media (1996)
  • NIITSUMA Hiroaki ID: 9000000351065

    Tohoku University (2000 from CiNii)

    Articles in CiNii:1

    • Silicon Micromachined Fiber-Optic Accelerometer for Downhole Seismic Measurement (2000)
  • NIITSUMA Hiroaki ID: 9000005753535

    Faculty of Engineering, Tohoku University (1982 from CiNii)

    Articles in CiNii:1

    • Fracture Mechanics Evaluation of Fracture Strength of Ferroelectric Ceramics : FERROELECTRIC MATERIALS (1982)
  • NIITSUMA Hiroaki ID: 9000005754021

    Faculty of Engineering, Tohoku University (1983 from CiNii)

    Articles in CiNii:1

    • Fracture Mechanics Evaluation of Acoustic Fatigue in Piezoelectric Ceramics : A: APPLICATIONS AND FUNDAMENTALS (1983)
  • NIITSUMA Hiroaki ID: 9000005754190

    Faculty of Engineering, Tohoku University (1983 from CiNii)

    Articles in CiNii:1

    • Fracture Strength Evaluation of Piezoelectric Ceramics by Fracture Mechanics Parameter : Generation and Detection of Ultrasonics (1983)
  • NIITSUMA Hiroaki ID: 9000239540616

    Articles in CiNii:1

    • Dispersion analysis of crack-waves in an artificial subsurface fracture using two crack models (2000)
  • NIITSUMA Hiroaki ID: 9000252865909

    Department of Resources Engineering, Faculty of Engineering, Tohoku University (1994 from CiNii)

    Articles in CiNii:1

    • Interval Patterns of the AE Sequences and Subsurface Fracture Extension in Ogachi HDR Geothermal Field. (1994)
  • NIITSUMA Hiroaki ID: 9000252866054

    Graduate School of Environmental Studies, Tohoku University (2005 from CiNii)

    Articles in CiNii:1

    • Development of Experimental Apparatus Designed for Shear Slip Associated with Injection and Hydraulically Induced Slip Experiments (2005)
  • NIITSUMA Hiroaki ID: 9000253429227

    Faculty of Engineering Tohoku University; (1988 from CiNii)

    Articles in CiNii:1

    • AE measurement and fracture behavior during hydraulic fracturing in the Kakkonda geothermal field, Japan. (1988)
  • NIITSUMA Hiroaki ID: 9000253429432

    Faculty of Engineering, Tohoku University (1993 from CiNii)

    Articles in CiNii:1

    • Longitudinal Wave Velocity in Hot Water Saturated Rocks under High Temperature and Pressure. (1993)
  • NIITSUMA Hiroaki ID: 9000253429497

    Faculty of Engineering, Tohoku University (1994 from CiNii)

    Articles in CiNii:1

    • Downhole AE measurement of hydraulic fracturing in Ogachi HDR model field. (1994)
  • NIITSUMA Hiroaki ID: 9000253429548

    Faculty of Engineering, Tohoku University (1994 from CiNii)

    Articles in CiNii:1

    • Subsurface AE Source Location with Simplified Velocity Model in Multi-Point Triaxial Measurement. (1994)
  • NIITSUMA Hiroaki ID: 9000253429862

    Graduate School of Engineering, Tohoku University (2003 from CiNii)

    Articles in CiNii:1

    • Estimation of Fracture System and Stress State of Ogachi HDR Reservoir by Using AE Multiplet Analysis. (2003)
  • NIITSUMA Hiroaki ID: 9000253429904

    Graduate School of Environmental Studies, Tohoku University (2004 from CiNii)

    Articles in CiNii:1

    • Energy In My Yard: A strategy to increase usage renewable energy from local sources (2004)
  • NIITSUMA Hiroaki ID: 9000254283376

    Faculty of Engineering, Tohoku University (1996 from CiNii)

    Articles in CiNii:1

    • Estimation of Guided Wave Velocity in Subsurface Fracture Using a Time-Frequency Representation Technique (1996)
  • NIITSUMA Hiroaki ID: 9000254798633

    THE JAPAN SOCIETY OF CIVIL ENGINEERS (1991 from CiNii)

    Articles in CiNii:1

    • Detection of bit location by acoustic emission technique in horizontal directional drilling. (1991)
  • NIITSUMA Hiroaki ID: 9000254878486

    Dept. of Electrical Engineering, Faculty of Engineering, Tohoku University (1986 from CiNii)

    Articles in CiNii:1

    • Analysis of Micro Fracture Process of Cement Mortar Using Real-Time AE Spectrum Analyzer (1986)
  • NIITSUMA Hiroaki ID: 9000255809046

    東北大学大学院環境科学研究科 (2003 from CiNii)

    Articles in CiNii:1

    • Development of Fiber Optic Micro Sensors and Characteristics of Received Waveforms (2003)
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