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Proceedings Papers

Experimental Measurement of CTOA During Ductile Crack Propagation in Pipeline Burst Tests

Kazuki Shibanuma, Hikaru Yamaguchi, Takahiro Hosoe, Katsuyuki Suzuki, Shuji Aihara
Proc. ASME. IPC2018, Volume 3: Operations, Monitoring, and Maintenance; Materials and Joining, V003T05A007, September 24–28, 2018
Paper No: IPC2018-78510
DOI: https://doi.org/10.1115/IPC2018-78510
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Topics: Ductile fracture, Pipelines, Fracture (Materials), Pipes, Steady state, Crack propagation, High pressure (Physics), Steel, Wall thickness, Weight (Mass)
Journal Articles

Inverse Fracture in DWTT and Brittle Crack Behavior in Large-Scale Brittle Crack Arrest Test

Tetsuya Tagawa, Toshihiko Amano, Takashi Hiraide, Takahiro Sakimoto, Satoshi Igi, Taishi Fujishiro, Takuya Hara, Takehiro Inoue, Shuji Aihara
Journal: Journal of Pressure Vessel Technology
Article Type: Research-Article
J. Pressure Vessel Technol. October 2018, 140(5): 051205.
Paper No: PVT-18-1042
DOI: https://doi.org/10.1115/1.4040641
Published Online: August 2, 2018
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Topics: Brittleness, Fracture (Materials), Fracture (Process)
Proceedings Papers

Experimental Study on Inverse Fracture in Drop-Weight Tear Test and Other Laboratory Test: Current Activities in HLP Committee, Japan, Report 2

Tetsuya Tagawa, Taishi Fujishiro, Toshihiko Amano, Shuji Aihara, Satoshi Igi
Proc. ASME. IPC2016, Volume 3: Operations, Monitoring and Maintenance; Materials and Joining, V003T05A027, September 26–30, 2016
Paper No: IPC2016-64299
DOI: https://doi.org/10.1115/IPC2016-64299
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Topics: Fracture (Materials), Weight (Mass), Brittleness, Shear (Mechanics), Ambiguity, Brittle fracture, Fractography, Hammers, Statistical process control, Steel
Proceedings Papers

Fracture Behavior in West Jefferson Test Under Low-Temperature Condition for X65 Steel Pipe With High Charpy Energy: Current Activities in HLP Committee, Japan, Report 1

Toshihiko Amano, Satoshi Igi, Takahiro Sakimoto, Takehiro Inoue, Shuji Aihara
Proc. ASME. IPC2016, Volume 3: Operations, Monitoring and Maintenance; Materials and Joining, V003T05A008, September 26–30, 2016
Paper No: IPC2016-64308
DOI: https://doi.org/10.1115/IPC2016-64308
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Topics: Fracture (Materials), Low temperature, Pipes, Steel, Fracture (Process), Temperature, Brittleness, Phase transition temperature, Cooling, American Petroleum Institute
Proceedings Papers

Numerical Model for Unstable Ductile Crack Propagation/Arrest in Natural Gas Pipelines Incorporating Soil Backfill Effect

Hiroaki Nakai, Shuji Aihara, Kei Misawa
Proc. ASME. IPC2014, Volume 3: Materials and Joining; Risk and Reliability, V003T07A021, September 29–October 3, 2014
Paper No: IPC2014-33709
DOI: https://doi.org/10.1115/IPC2014-33709
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Topics: Computer simulation, Ductile fracture, Natural gas distribution, Soil, Pipes, Deformation, Crack propagation, Pipelines, Carbon dioxide, Density
Journal Articles

Calculation of Dynamic Stress Intensity Factors for Pipes During Crack Propagation by Dynamic Finite Element Analysis

Masaki Mitsuya, Hiroyuki Motohashi, Noritake Oguchi, Shuji Aihara
Journal: Journal of Pressure Vessel Technology
Article Type: Research-Article
J. Pressure Vessel Technol. February 2014, 136(1): 011207.
Paper No: PVT-13-1072
DOI: https://doi.org/10.1115/1.4025617
Published Online: November 7, 2013
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Topics: Crack propagation, Finite element analysis, Fracture (Materials), Pipes, Stress, Pressure
Proceedings Papers

Effect of Plastic Deformation on Occurrence of Abnormal Fracture During DWTT

Taishi Fujishiro, Takuya Hara, Shuji Aihara
Proc. ASME. IPC2012, Volume 3: Materials and Joining, 159-165, September 24–28, 2012
Paper No: IPC2012-90165
DOI: https://doi.org/10.1115/IPC2012-90165
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Topics: Deformation, Fracture (Materials), Hammers, American Petroleum Institute, Steel, Acceptance criteria, Compression, Fracture toughness, Liquefied natural gas, Natural gas
Proceedings Papers

Calculation of Dynamic Stress Intensity Factors for Pipes During Crack Propagation by Dynamic Finite Element Analysis

Masaki Mitsuya, Hiroyuki Motohashi, Noritake Oguchi, Shuji Aihara
Proc. ASME. IPC2012, Volume 3: Materials and Joining, 187-196, September 24–28, 2012
Paper No: IPC2012-90205
DOI: https://doi.org/10.1115/IPC2012-90205
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Topics: Crack propagation, Finite element analysis, Pipes, Stress, Fracture (Materials), Plates (structures), Leakage, Pipelines, Stress concentration, Theoretical analysis
Proceedings Papers

Evaluation on Dependence of Ductile Crack Propagation Resistance on Crack Velocity

Shuji Aihara, Kazuki Shibanuma, Yasuhito Imai, Taishi Fujishiro, Takuya Hara
Proc. ASME. IPC2012, Volume 3: Materials and Joining, 575-584, September 24–28, 2012
Paper No: IPC2012-90637
DOI: https://doi.org/10.1115/IPC2012-90637
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Topics: Ductile fracture, Fracture (Materials), Pipes, Crack propagation, Displacement, Finite element analysis, Stress, Weight (Mass)
Proceedings Papers

A New Model for Dynamic Crack Propagation and Arrest in Gas Pipelines

Kei Misawa, Yasuhito Imai, Shuji Aihara
Proc. ASME. IPC2010, 2010 8th International Pipeline Conference, Volume 2, 685-694, September 27–October 1, 2010
Paper No: IPC2010-31475
DOI: https://doi.org/10.1115/IPC2010-31475
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Topics: Crack propagation, Pipelines, Fracture (Materials), Pipes, Deformation, Differential equations, Ductile fracture, Gases, Pipe sizes, Pressure
Proceedings Papers

Full-Scale Burst Test of Hydrogen Gas X65 Pipeline

Shuji Aihara, Hans I. Lange, Kei Misawa, Yasuhito Imai, Yu Sedei, Erling O̸stby, Christian Thaulow
Proc. ASME. IPC2010, 2010 8th International Pipeline Conference, Volume 2, 415-422, September 27–October 1, 2010
Paper No: IPC2010-31235
DOI: https://doi.org/10.1115/IPC2010-31235
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Topics: Hydrogen, Pipelines, Fracture (Materials), Steel, Computer simulation, Crack propagation, Explosives, Fracture toughness, Methane, Pipes
Proceedings Papers

Improvement of CTOD Calculation in Japanese Flaw Assessment Methods of WES2805

Yoichi Kayamori, Takehiro Inoue, Hideki Hiramatsu, Koji Michiba, Shuji Aihara, Yukito Hagihara
Proc. ASME. PVP2008, Volume 1: Codes and Standards, 553-562, July 27–31, 2008
Paper No: PVP2008-61256
DOI: https://doi.org/10.1115/PVP2008-61256
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Topics: Design, Finite element analysis, Fracture (Materials), Fracture toughness, Magnification, Strain gradient, Stress, Stress concentration, Welded joints, Welding
Proceedings Papers

Burst Tests for High-Pressure Hydrogen Gas Line Pipes

Shuji Aihara, Erling O̸stby, Hans I. Lange, Kei Misawa, Yasuhito Imai, Christian Thaulow
Proc. ASME. IPC2008, 2008 7th International Pipeline Conference, Volume 3, 117-125, September 29–October 3, 2008
Paper No: IPC2008-64166
DOI: https://doi.org/10.1115/IPC2008-64166
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Topics: High pressure (Physics), Hydrogen, Pipes, Fracture (Materials), Methane, Numerical analysis, Pressure measurement, Shear (Mechanics), Wall thickness, Waves
Proceedings Papers

Combined Effect of Temper and Hydrogen Embrittlement on Impact Properties of Cr-Mo Steels

Yoichi Tanaka, Shuji Aihara, Shinji Konosu, Kenji Hayashi, Masao Yuga, Hiroshi Yamamoto, Naotake Ohtsuka, Hiroshi Mimura
Proc. ASME. PVP2006-ICPVT-11, Volume 6: Materials and Fabrication, 555-561, July 23–27, 2006
Paper No: PVP2006-ICPVT-11-93360
DOI: https://doi.org/10.1115/PVP2006-ICPVT-11-93360
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Topics: Hydrogen embrittlement, Steel, Embrittlement, Hydrogen, Fracture toughness, Heat treating (Metalworking), Fracture (Materials), Fracture (Process), Cooling, High pressure (Physics)