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Masatsugu Yaguchi
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Proceedings Papers

Long-Term Creep Strength Evaluation of Welded Joint of ASME Grade 91 Type Steel

Masatsugu Yaguchi
Proc. ASME. PVP2024, Volume 4: Materials & Fabrication, V004T06A064, July 28–August 2, 2024
Publisher: American Society of Mechanical Engineers
Paper No: PVP2024-122116
https://doi.org/10.1115/PVP2024-122116
View Paper titled, Long-Term Creep Strength Evaluation of Welded Joint of ASME Grade 91 Type Steel
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Topics: Creep, Steel, Welded joints
Proceedings Papers

Revision of Long-Term Creep Strength of Base Metal of ASME Grade 91 Type Steel

Kazuhiro Kimura, Masatsugu Yaguchi
Proc. ASME. PVP2024, Volume 4: Materials & Fabrication, V004T06A067, July 28–August 2, 2024
Publisher: American Society of Mechanical Engineers
Paper No: PVP2024-122999
https://doi.org/10.1115/PVP2024-122999
View Paper titled, Revision of Long-Term Creep Strength of Base Metal of ASME Grade 91 Type Steel
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Topics: Base metals, Creep, Steel, Stress
Proceedings Papers

Development of Life Estimation Method for Nozzle Welds in Large Scale Piping of Modified 9Cr-1Mo Steel -Part II: Analytical Study

Yukio Takahashi, Haruhisa Shigeyama, Masatsugu Yaguchi
Proc. ASME. PVP2022, Volume 4A: Materials and Fabrication, V04AT06A027, July 17–22, 2022
Publisher: American Society of Mechanical Engineers
Paper No: PVP2022-84126
https://doi.org/10.1115/PVP2022-84126
View Paper titled, Development of Life Estimation Method for Nozzle Welds in Large Scale Piping of Modified 9Cr-1Mo Steel -Part II: Analytical Study
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Topics: Creep, Damage, Failure, Nozzles, Pipes, Steel, Temperature, Welded joints, Boilers, Cracking (Materials)
Proceedings Papers

Development of Life Estimation Method for Nozzle Welds in Large Scale Piping of Modified 9Cr-1Mo Steel -Part I: Experimental Study

Haruhisa Shigeyama, Yukio Takahashi, Koji Tamura, Masatsugu Yaguchi, Satoshi Nishinoiri
Proc. ASME. PVP2022, Volume 4A: Materials and Fabrication, V04AT06A028, July 17–22, 2022
Publisher: American Society of Mechanical Engineers
Paper No: PVP2022-84220
https://doi.org/10.1115/PVP2022-84220
View Paper titled, Development of Life Estimation Method for Nozzle Welds in Large Scale Piping of Modified 9Cr-1Mo Steel -Part I: Experimental Study
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Topics: Creep, Damage, Nozzles, Pipes, Pressure, Steel, Welded joints
Journal Articles

Remaining Creep Life Prediction Method for In-Service Boiler Pipe Weldment Using Small Scale Specimen

Masatsugu Yaguchi
Journal: Materials Performance and Characterization
Publisher: ASTM International
Article Type: Technical Papers
Matls. Perf. Charact.. October 2022, 11(3): 402–423.
Paper No: MPC20210104
https://doi.org/10.1520/MPC20210104
Published Online: October 11, 2022
View Article titled, Remaining Creep Life Prediction Method for In-Service Boiler Pipe Weldment Using Small Scale Specimen
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Journal Articles

Evaluation of Stress Rupture Factors for Grade 91 Weldments

Kazuhiro Kimura, Masatsugu Yaguchi
Journal: Journal of Pressure Vessel Technology
Publisher: ASME
Article Type: Research-Article
J. Pressure Vessel Technol. August 2020, 142(4): 041502.
Paper No: PVT-19-1201
https://doi.org/10.1115/1.4046431
Published Online: April 8, 2020
View Article titled, Evaluation of Stress Rupture Factors for Grade 91 Weldments
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Topics: Creep, Rupture, Steel, Stress, Temperature, Base metals
Proceedings Papers

Re-Evaluation of Stress Rupture Factors for Grade 91 Weldments Based on the Extended Database With the Data Collected in Japan

Kazuhiro Kimura, Masatsugu Yaguchi
Proc. ASME. PVP2019, Volume 6B: Materials and Fabrication, V06BT06A015, July 14–19, 2019
Publisher: American Society of Mechanical Engineers
Paper No: PVP2019-93331
https://doi.org/10.1115/PVP2019-93331
View Paper titled, Re-Evaluation of Stress Rupture Factors for Grade 91 Weldments Based on the Extended Database With the Data Collected in Japan
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Topics: Databases, Rupture, Stress
Proceedings Papers

Effective Portion of Sample Taken From USC Boiler Pipes to Consider Heat-to-Heat Variation of Creep

Masatsugu Yaguchi, Masato Tomobe, Shin-ichi Komazaki, Akihiro Kumada
Proc. ASME. PVP2018, Volume 6B: Materials and Fabrication, V06BT06A064, July 15–20, 2018
Publisher: American Society of Mechanical Engineers
Paper No: PVP2018-84173
https://doi.org/10.1115/PVP2018-84173
View Paper titled, Effective Portion of Sample Taken From USC Boiler Pipes to Consider Heat-to-Heat Variation of Creep
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Topics: Boilers, Creep, Heat, Pipes, Base metals, Welded joints, Density, Power stations, Steel
Proceedings Papers

Assessment of Heat-to-Heat Variation of Gr.91 Boiler Pipings by Small Punch Creep Test

Shin-ichi Komazaki, Keisuke Obata, Masato Tomobe, Masatsugu Yaguchi, Akihiro Kumada
Proc. ASME. PVP2018, Volume 6B: Materials and Fabrication, V06BT06A063, July 15–20, 2018
Publisher: American Society of Mechanical Engineers
Paper No: PVP2018-84153
https://doi.org/10.1115/PVP2018-84153
View Paper titled, Assessment of Heat-to-Heat Variation of Gr.91 Boiler Pipings by Small Punch Creep Test
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Topics: Boilers, Creep, Heat, Testing, Rupture, Deformation, Disks, Power stations, Steel, Stress
Proceedings Papers

Estimation of Creep Strength of Grade 91 Steel Welded Joint in Time Region Over 100,000 Hours

Masatsugu Yaguchi, Sosuke Nakahashi, Koji Tamura
Proc. ASME. ETAM2018, ASME 2018 Symposium on Elevated Temperature Application of Materials for Fossil, Nuclear, and Petrochemical Industries, V001T01A003, April 3–5, 2018
Publisher: American Society of Mechanical Engineers
Paper No: ETAM2018-6720
https://doi.org/10.1115/ETAM2018-6720
View Paper titled, Estimation of Creep Strength of Grade 91 Steel Welded Joint in Time Region Over 100,000 Hours
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Topics: Creep, Steel, Welded joints, Heat, Base metals, Fittings
Proceedings Papers

Microstructures of Grade 91 Steels Under Long-Term Creep Conditions

Kenji Kako, Susumu Yamada, Masatsugu Yaguchi, Yusuke Minami
Proc. ASME. ETAM2018, ASME 2018 Symposium on Elevated Temperature Application of Materials for Fossil, Nuclear, and Petrochemical Industries, V001T01A002, April 3–5, 2018
Publisher: American Society of Mechanical Engineers
Paper No: ETAM2018-6712
https://doi.org/10.1115/ETAM2018-6712
View Paper titled, Microstructures of Grade 91 Steels Under Long-Term Creep Conditions
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Topics: Creep, Steel, Pipes, Damage, Electricity (Physics), Martensitic steel
Proceedings Papers

Evaluation of Stress-Increase Caused by Geometric Imperfections in Longitudinally-Welded Hot Reheat Steam Piping of Mod. 9Cr-1Mo Steel

Haruhisa Shigeyama, Yukio Takahashi, Masatsugu Yaguchi
Proc. ASME. PVP2017, Volume 6A: Materials and Fabrication, V06AT06A070, July 16–20, 2017
Publisher: American Society of Mechanical Engineers
Paper No: PVP2017-65900
https://doi.org/10.1115/PVP2017-65900
View Paper titled, Evaluation of Stress-Increase Caused by Geometric Imperfections in Longitudinally-Welded Hot Reheat Steam Piping of Mod. 9Cr-1Mo Steel
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Topics: Pipes, Steam, Steel, Stress, Creep, Damage, Finite element analysis, Heat
Proceedings Papers

Re-Evaluation of Long-Term Creep Strength of Welded Joint of ASME Grade 91 Type Steel

Masatsugu Yaguchi, Kaoru Nakamura, Sosuke Nakahashi
Proc. ASME. PVP2016, Volume 6B: Materials and Fabrication, V06BT06A013, July 17–21, 2016
Publisher: American Society of Mechanical Engineers
Paper No: PVP2016-63316
https://doi.org/10.1115/PVP2016-63316
View Paper titled, Re-Evaluation of Long-Term Creep Strength of Welded Joint of ASME Grade 91 Type Steel
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Topics: Creep, Steel, Welded joints, Rupture, Base metals, Milling, Temperature
Proceedings Papers

Re-Evaluation of Long-Term Creep Strength of Base Metal of ASME Grade 91 Type Steel

Kazuhiro Kimura, Masatsugu Yaguchi
Proc. ASME. PVP2016, Volume 6B: Materials and Fabrication, V06BT06A014, July 17–21, 2016
Publisher: American Society of Mechanical Engineers
Paper No: PVP2016-63355
https://doi.org/10.1115/PVP2016-63355
View Paper titled, Re-Evaluation of Long-Term Creep Strength of Base Metal of ASME Grade 91 Type Steel
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Topics: Base metals, Creep, Steel, Rupture, Power stations, Stress, Tension, Yield strength
Proceedings Papers

Inner Pressure/Bending Creep Test on Circumferentially Welded Large Diameter Pipe of Grade 91 Steel: Creep Damage Mechanism and Applicability of NDE

Satoshi Nishinoiri, Yukio Takahashi, Hiroyuki Fukutomi, Masatsugu Yaguchi
Proc. ASME. PVP2016, Volume 6A: Materials and Fabrication, V06AT06A053, July 17–21, 2016
Publisher: American Society of Mechanical Engineers
Paper No: PVP2016-63176
https://doi.org/10.1115/PVP2016-63176
View Paper titled, Inner Pressure/Bending Creep Test on Circumferentially Welded Large Diameter Pipe of Grade 91 Steel: Creep Damage Mechanism and Applicability of NDE
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Topics: Creep, Damage, Nondestructive evaluation, Pipes, Pressure, Steel, Welded joints, Failure, Inspection, Leakage
Proceedings Papers

Development of Analytical Evaluation Methods for Creep Failure in Weldments of High Chromium Steels and Application to Full Scale Pipe Experiments

Yukio Takahashi, Satoshi Nishinoiri, Masatsugu Yaguchi
Proc. ASME. PVP2016, Volume 6A: Materials and Fabrication, V06AT06A064, July 17–21, 2016
Publisher: American Society of Mechanical Engineers
Paper No: PVP2016-63834
https://doi.org/10.1115/PVP2016-63834
View Paper titled, Development of Analytical Evaluation Methods for Creep Failure in Weldments of High Chromium Steels and Application to Full Scale Pipe Experiments
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Topics: Creep, Evaluation methods, Failure, Pipes, Steel, Cracking (Materials), Fracture (Process), Damage, Density, Finite element analysis
Proceedings Papers

Inner Pressure/Bending Creep Test on Circumferentially Welded Large Diameter Pipe of Grade 122 Steel: Experimental Procedure and Results

Satoshi Nishinoiri, Lin Shan, Yukio Takahashi, Masatsugu Yaguchi
Proc. ASME. PVP2015, Volume 6A: Materials and Fabrication, V06AT06A049, July 19–23, 2015
Publisher: American Society of Mechanical Engineers
Paper No: PVP2015-45423
https://doi.org/10.1115/PVP2015-45423
View Paper titled, Inner Pressure/Bending Creep Test on Circumferentially Welded Large Diameter Pipe of Grade 122 Steel: Experimental Procedure and Results
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Topics: Creep, Pipes, Pressure, Steel, Damage, Inspection, Deformation, Fracture (Materials), Heat, Nondestructive evaluation
Proceedings Papers

Inner Pressure/Bending Creep Test on Circumferentially Welded Large Diameter Pipe of Grade 122 Steel: Failure Life Prediction

Yukio Takahashi, Satoshi Nishinoiri, Masatsugu Yaguchi
Proc. ASME. PVP2015, Volume 6A: Materials and Fabrication, V06AT06A048, July 19–23, 2015
Publisher: American Society of Mechanical Engineers
Paper No: PVP2015-45384
https://doi.org/10.1115/PVP2015-45384
View Paper titled, Inner Pressure/Bending Creep Test on Circumferentially Welded Large Diameter Pipe of Grade 122 Steel: Failure Life Prediction
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Topics: Creep, Failure, Pipes, Pressure, Steel, Welded joints, Damage, Finite element analysis, Fossil fuels, Fracture (Materials)
Proceedings Papers

Evaluation of Long-Term Creep Strength of Welded Joints of ASME Grades 91, 92 and 122 Type Steels

Masatsugu Yaguchi, Takuaki Matsumura, Katsuaki Hoshino
Proc. ASME. PVP2012, Volume 6: Materials and Fabrication, Parts A and B, 317-326, July 15–19, 2012
Publisher: American Society of Mechanical Engineers
Paper No: PVP2012-78393
https://doi.org/10.1115/PVP2012-78393
View Paper titled, Evaluation of Long-Term Creep Strength of Welded Joints of ASME Grades 91, 92 and 122 Type Steels
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Topics: Creep, Steel, Welded joints, Rupture, Temperature, Base metals, Welding
Proceedings Papers

Creep Damage Assessment Procedure for Weldment Parts of P91 Boiler Piping in USC Plants: Part II—Validation of a Creep Damage Assessment Method Based on Void Growth Simulation

Takashi Ogata, Takayuki Sakai, Masatsugu Yaguchi, Katsuaki Hoshino
Proc. ASME. PVP2011, Volume 6: Materials and Fabrication, Parts A and B, 513-519, July 17–21, 2011
Publisher: American Society of Mechanical Engineers
Paper No: PVP2011-57333
https://doi.org/10.1115/PVP2011-57333
View Paper titled, Creep Damage Assessment Procedure for Weldment Parts of P91 Boiler Piping in USC Plants: Part II—Validation of a Creep Damage Assessment Method Based on Void Growth Simulation
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Topics: Boilers, Creep, Damage assessment, Pipes, Pressure, Simulation, Steel