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Proceedings Papers

Application of a New Plastic Optic Fiber Sensor for Detection of Water and Its Phase Change in Geo-Materials

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Y. Tanaka, S. Akutagawa
Paper presented at the 5th ISRM Young Scholars' Symposium on Rock Mechanics and International Symposium on Rock Engineering for Innovative Future, December 1–4, 2019
Paper Number: ISRM-YSRM-2019-051
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View Paper titled, Application of a New Plastic Optic Fiber Sensor for Detection of Water and Its Phase Change in Geo-Materials
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Proceedings Papers

Low-Cost Monitoring and Visualization of Changes in Magnetic Field Caused by Soil Erosion Behind a Concrete Wall

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J. Oshima, S. Akutagawa
Paper presented at the 5th ISRM Young Scholars' Symposium on Rock Mechanics and International Symposium on Rock Engineering for Innovative Future, December 1–4, 2019
Paper Number: ISRM-YSRM-2019-053
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View Paper titled, Low-Cost Monitoring and Visualization of Changes in Magnetic Field Caused by Soil Erosion Behind a Concrete Wall
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Proceedings Papers

Monitoring of Ground Freezing Process by Optic Fiber Sensor

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S. Akutagawa, Y. Tanaka
Paper presented at the ISRM International Symposium - 10th Asian Rock Mechanics Symposium, October 29–November 3, 2018
Paper Number: ISRM-ARMS10-2018-219
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View Paper titled, Monitoring of Ground Freezing Process by Optic Fiber Sensor
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Proceedings Papers

Experimental Observation of Hardening Process of Engineering Materials by Optic Fiber Sensor

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S. Akutagawa, Y. Tanaka
Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-1127
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View Paper titled, Experimental Observation of Hardening Process of Engineering Materials by Optic Fiber Sensor
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Proceedings Papers

Experimental Characterization of Movement of Water and Air in Granular Material by Using Optic Fiber Sensor With an Emphasis on Refrative Index of Light

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S. Akutagawa, Y. Machijima, T. Sato, A. Takahashi
Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0313
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View Paper titled, Experimental Characterization of Movement of Water and Air in Granular Material by Using Optic Fiber Sensor With an Emphasis on Refrative Index of Light
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Proceedings Papers

On-Site Visualization Methods of Axial Forces in Ground Supporting Members without Using Electricity

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S. Akutagawa, T. Yamamoto, T. Haba, K. Takeya, M. Ujihara
Paper presented at the 50th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2016
Paper Number: ARMA-2016-613
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View Paper titled, On-Site Visualization Methods of Axial Forces in Ground Supporting Members without Using Electricity
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Proceedings Papers

A new Optical Fiber Sensor for Reading RGB Intensities of Light Returning from an Observation Point in Geo-materials

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S. Akutagawa, Y. Machijima
Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-784
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View Paper titled, A new Optical Fiber Sensor for Reading RGB Intensities of Light Returning from an Observation Point in Geo-materials
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Proceedings Papers

The Development of Low Cost OSV (On-Site Visualization) Devices and its Application on Hanoi Metro Line 2

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C. Izumi, S. Akutagawa, M. Nomura, H. Zhang
Paper presented at the ISRM VietRock Conference, March 12–13, 2015
Paper Number: ISRM-VIETROCK-2015-052
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View Paper titled, The Development of Low Cost OSV (On-Site Visualization) Devices and its Application on Hanoi Metro Line 2
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Proceedings Papers

A Mechanical Method for Monitoring and Visualization of Deformations of Tunnel Structures

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S. Akutagawa, H. Zhang, T. Terashima, K. Tsujimura
Paper presented at the ISRM International Symposium - 8th Asian Rock Mechanics Symposium, October 14–16, 2014
Paper Number: ISRM-ARMS8-2014-271
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View Paper titled, A Mechanical Method for Monitoring and Visualization of Deformations of Tunnel Structures
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Proceedings Papers

A New Method for Reading Local Deformation of Granular Material by Using Light

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S. Akutagawa, A. Nishio, Y. Matsumoto, A. Takahashi, Y. Machijima
Paper presented at the 48th U.S. Rock Mechanics/Geomechanics Symposium, June 1–4, 2014
Paper Number: ARMA-2014-7723
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View Paper titled, A New Method for Reading Local Deformation of Granular Material by Using Light
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Proceedings Papers

Measurement and Real-Time Visual Presentation of Ground Deformation Ahead of Mountain Tunneling Face using Optical Fibers

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S. Akutagawa, H. Zhang, M. Terashima, K. Tsujimura
Paper presented at the ISRM SINOROCK 2013, June 18–20, 2013
Paper Number: ISRM-SINOROCK-2013-131
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View Paper titled, Measurement and Real-Time Visual Presentation of Ground Deformation Ahead of Mountain Tunneling Face using Optical Fibers
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Proceedings Papers

A new Method for Visualizing Force in Ground Anchor by using Plastic Optical Fiber and Sun Light

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S. Akutagawa, A. Nishio, K. Takeya, Y. Ishizuka, T. Katayama
Paper presented at the ISRM Regional Symposium - 7th Asian Rock Mechanics Symposium, October 15–19, 2012
Paper Number: ISRM-ARMS7-2012-161
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View Paper titled, A new Method for Visualizing Force in Ground Anchor by using Plastic Optical Fiber and Sun Light
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Proceedings Papers

On Site Visualization As a New Visual Scheme For Risk And Safety Management For Rock Engineering Applications

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S. Akutagawa, R. Abe, C. Izumi, M. Nomura
Paper presented at the 46th U.S. Rock Mechanics/Geomechanics Symposium, June 24–27, 2012
Paper Number: ARMA-2012-456
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View Paper titled, On Site Visualization As a New Visual Scheme For Risk And Safety Management For Rock Engineering Applications
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Proceedings Papers

A New Method for Visualizing Stresses in Rock Support Measures by using a Light Emitting Sensor

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S. Akutagawa, Y. Minami, H. Yamachi, T. Haba, T. Hiroshima, T. Nozawa
Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-162
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View Paper titled, A New Method for Visualizing Stresses in Rock Support Measures by using a Light Emitting Sensor
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Proceedings Papers

On Site Visualization As A New Paradigm For Field Measurement In Rock Engineering

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S. Akutagawa
Paper presented at the ISRM International Symposium - 6th Asian Rock Mechanics Symposium, October 23–27, 2010
Paper Number: ISRM-ARMS6-2010-169
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View Paper titled, On Site Visualization As A New Paradigm For Field Measurement In Rock Engineering
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Proceedings Papers

Light Emitting Sensors As New Visual Tool For Rock Structure Monitoring

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S. Akutagawa, A. Kusui, M. Nomura
Paper presented at the ISRM International Symposium - EUROCK 2010, June 15–18, 2010
Paper Number: ISRM-EUROCK-2010-140
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View Paper titled, Light Emitting Sensors As New Visual Tool For Rock Structure Monitoring
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Proceedings Papers

Parameter Identification And Subsidence Prediction By Artificial Neural Networks And FEM Database For Design And Construction of NATM Tunnels

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J.H. Lee, S. Akutagawa, H. Iida, Y. Yokota
Paper presented at the 11th ISRM Congress, July 9–13, 2007
Paper Number: ISRM-11CONGRESS-2007-217
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View Paper titled, Parameter Identification And Subsidence Prediction By Artificial Neural Networks And FEM Database For Design And Construction of NATM Tunnels
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Proceedings Papers

Use of Magnetic Anisotropy Sensor For Measurement of Stresses On Steel Support And Its Potential

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S. Akutagawa, T. Matsuoka, H. Sekimoto, M. Ota, K. Yasuhara
Paper presented at the 10th ISRM Congress, September 8–12, 2003
Paper Number: ISRM-10CONGRESS-2003-004
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View Paper titled, Use of Magnetic Anisotropy Sensor For Measurement of Stresses On Steel Support And Its Potential
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Proceedings Papers

A Numerical Investigation On the Failure of a Large Scale Rock Slope Failure

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S. Akutagawa, H. Usui, S. Sakurai
Paper presented at the ISRM International Symposium - 2nd Asian Rock Mechanics Symposium, September 11–14, 2001
Paper Number: ISRM-ARMS2-2001-059
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View Paper titled, A Numerical Investigation On the Failure of a Large Scale Rock Slope Failure
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Proceedings Papers

A Comparative Study on the Performance of Back Analysis Procedures for Identification of Nonlinear Deformational Behavior of a Rock Mass Around a Large Underground Powerhouse Cavern

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S. Akutagawa, K. Takeuchi, T. Shimura, S. Sakurai
Paper presented at the 4th North American Rock Mechanics Symposium, July 31–August 3, 2000
Paper Number: ARMA-2000-1035
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View Paper titled, A Comparative Study on the Performance of Back Analysis Procedures for Identification of Nonlinear Deformational Behavior of a Rock Mass Around a Large Underground Powerhouse Cavern
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