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Journal Articles

Tensile Strain Characteristics of Small-Scale Fracture Toughness Test Specimens and Large-Scale Tests Under Loading

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Dong-Yeob Park, Jie Liang, James A. Gianetto, Takahiro Sakimoto, Hisakazu Tajika, Satoshi Igi
Journal: Journal of Pressure Vessel Technology
Publisher: ASME
Article Type: Research-Article
J. Pressure Vessel Technol. August 2025, 147(4): 041502.
Paper No: PVT-24-1162
https://doi.org/10.1115/1.4068258
Published Online: April 10, 2025
View Articletitled, Tensile Strain Characteristics of Small-Scale Fracture Toughness Test Specimens and Large-Scale Tests Under Loading
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Topics: Fracture (Materials), Fracture toughness, Pipes, Pipelines
Proceedings Papers

Tensile Strain Characteristics of Small-Scale Fracture Toughness Test Specimens Under Loading

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Dong-Yeob Park, Jie Liang, James A. Gianetto, Takahiro Sakimoto, Hisakazu Tajika, Satoshi Igi
Proc. ASME. PVP2024, Volume 4: Materials & Fabrication, V004T06A052, July 28–August 2, 2024
Publisher: American Society of Mechanical Engineers
Paper No: PVP2024-122376
https://doi.org/10.1115/PVP2024-122376
View Paper titled, Tensile Strain Characteristics of Small-Scale Fracture Toughness Test Specimens Under Loading
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Topics: Fracture toughness
Proceedings Papers

Approximate Evaluation Method for Crack Growth Rates Under Repeated Large Plastic Deformation

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Satoshi Igi, Kentaro Hidaka, Masanori Kawahara
Proc. ASME. IMECE96, Development, Validation, and Application of Inelastic Methods for Structural Analysis and Design, 169-174, November 17–22, 1996
Publisher: American Society of Mechanical Engineers
Paper No: IMECE1996-0571
https://doi.org/10.1115/IMECE1996-0571
View Paper titled, Approximate Evaluation Method for Crack Growth Rates Under Repeated Large Plastic Deformation
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Topics: Deformation, Evaluation methods, Fracture (Materials), Stress, Accidents, Displacement, Earthquakes, Fracture mechanics, Steel, Structural elements (Construction)
Journal Articles

Collapse Limit of Thermally Treated Line Pipe Under Combined External Pressure and Bending Deformation

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Takahiro Sakimoto, Hisakazu Tajika, Tsunehisa Handa, Satoshi Igi, Joe Kondo
Journal: Journal of Offshore Mechanics and Arctic Engineering
Publisher: ASME
Article Type: Research Papers
J. Offshore Mech. Arct. Eng. April 2023, 145(2): 021703.
Paper No: OMAE-22-1040
https://doi.org/10.1115/1.4056186
Published Online: November 23, 2022
View Articletitled, Collapse Limit of Thermally Treated Line Pipe Under Combined External Pressure and Bending Deformation
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Topics: Collapse, External pressure, Pipes, Pressure, Thermodynamic cycles, Deformation, Testing
Proceedings Papers

Collapse Resistance Under Combined External Pressure and Bending Deformation of Coated Linepipe

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Takahiro Sakimoto, Hisakazu Tajika, Tsunehisa Handa, Yoshiaki Murakami, Satoshi Igi, Joe Kondo
Proc. ASME. OMAE2020, Volume 3: Materials Technology, V003T03A004, August 3–7, 2020
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2020-18250
https://doi.org/10.1115/OMAE2020-18250
View Paper titled, Collapse Resistance Under Combined External Pressure and Bending Deformation of Coated Linepipe
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Topics: Collapse, Deformation, External pressure, Pipes, Yield strength, Cycles, Thermodynamic cycles, Water, Heating, Stress
Journal Articles

Brittle Crack Arrestability and Inverse Fracture in DWTT

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Takahiro Sakimoto, Toshihiko Amano, Takashi Hiraide, Tetsuya Tagawa, Satoshi Igi, Yasuhiro Shinohara
Journal: Journal of Pressure Vessel Technology
Publisher: ASME
Article Type: Research-Article
J. Pressure Vessel Technol. June 2021, 143(3): 031503.
Paper No: PVT-20-1086
https://doi.org/10.1115/1.4048419
Published Online: October 7, 2020
View Articletitled, Brittle Crack Arrestability and Inverse Fracture in DWTT
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Topics: Brittleness, Fracture (Materials), Temperature, Shear (Mechanics)
eBook Chapter

DEVELOPMENT OF HIGH STRENGTH HIGH STRAIN LINEPIPE STEELS

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Publisher: ASME Press
Published: 2020
https://doi.org/10.1115/1.861998_ch27
ISBN: 9780791861998
Open the PDF for DEVELOPMENT OF HIGH STRENGTH HIGH STRAIN LINEPIPE STEELS in another window
Topics: Steel
eBook Chapter

TENSILE STRAIN CAPACITY AFTER LOCAL BUCKLING OF HIGH STRAIN PIPELINE IN FULL-SCALE BENDING TESTS

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Publisher: ASME Press
Published: 2020
https://doi.org/10.1115/1.861998_ch28
ISBN: 9780791861998
Open the PDF for TENSILE STRAIN CAPACITY AFTER LOCAL BUCKLING OF HIGH STRAIN PIPELINE IN FULL-SCALE BENDING TESTS in another window
Topics: Buckling, Pipelines
Proceedings Papers

Development of YS 500MPa Class Thick Steel Plate With Weld Joint CTOD Property for Offshore Structures

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Yusuke Terazawa, Katsuyuki Ichimiya, Keiji Ueda, Satoshi Igi, Minoru Suwa, Toshitaka Tanaka, Akiyoshi Tsuji
Proc. ASME. OMAE2019, Volume 4: Materials Technology, V004T03A002, June 9–14, 2019
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2019-95465
https://doi.org/10.1115/OMAE2019-95465
View Paper titled, Development of YS 500MPa Class Thick Steel Plate With Weld Joint CTOD Property for Offshore Structures
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Topics: Offshore structures, Steel
Proceedings Papers

Material Design of Offshore Linepipe Steels for Ultra Deep Water Application

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Kyono Yasuda, Junji Shimamura, Satoshi Igi, Ryuji Muraoka
Proc. ASME. OMAE2019, Volume 4: Materials Technology, V004T03A004, June 9–14, 2019
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2019-95863
https://doi.org/10.1115/OMAE2019-95863
View Paper titled, Material Design of Offshore Linepipe Steels for Ultra Deep Water Application
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Topics: Design, Ocean engineering, Steel, Water, Pipes, Collapse, Deformation, Fracture toughness, Yield strength, Mechanical properties
Proceedings Papers

Effect of Notch Type in Drop-Weight Tear Test Specimen on Crack Propagation and Arrest Behavior

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Satoshi Igi, Toshihiko Amano, Takahiro Sakimoto, Yasuhiro Shinohara, Tetsuya Tagawa
Proc. ASME. IPC2018, Volume 3: Operations, Monitoring, and Maintenance; Materials and Joining, V003T05A010, September 24–28, 2018
Publisher: American Society of Mechanical Engineers
Paper No: IPC2018-78579
https://doi.org/10.1115/IPC2018-78579
View Paper titled, Effect of Notch Type in Drop-Weight Tear Test Specimen on Crack Propagation and Arrest Behavior
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Topics: Crack propagation, Weight (Mass), Fracture (Materials), Brittleness, Shear (Mechanics), Ambiguity, American Petroleum Institute, Brittle fracture, Hammers, Pipelines
Proceedings Papers

Relationship of Fracture Behaviours Between Full-Scale Pipe Bending and Small-Scale Toughness Tests

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Dong-Yeob Park, Hisakazu Tajika, Takahiro Sakimoto, Satoshi Igi, James A. Gianetto, Jie Liang, Jean-Philippe Gravel, Joe Kondo
Proc. ASME. PVP2018, Volume 6B: Materials and Fabrication, V06BT06A050, July 15–20, 2018
Publisher: American Society of Mechanical Engineers
Paper No: PVP2018-84138
https://doi.org/10.1115/PVP2018-84138
View Paper titled, Relationship of Fracture Behaviours Between Full-Scale Pipe Bending and Small-Scale Toughness Tests
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Topics: Fracture (Materials), Fracture toughness, Pipe bending, Pipes, Electrical discharge machining, Deformation, Design, Displacement, Heat, Manufacturing
Proceedings Papers

Strain Capacity Investigation on Grade X70 High Strain Line Pipe With Girth Weld

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Hisakazu Tajika, Takahiro Sakimoto, Tsunehisa Handa, Satoshi Igi, Rinsei Ikeda, Joe Kondo
Proc. ASME. PVP2018, Volume 6B: Materials and Fabrication, V06BT06A055, July 15–20, 2018
Publisher: American Society of Mechanical Engineers
Paper No: PVP2018-85059
https://doi.org/10.1115/PVP2018-85059
View Paper titled, Strain Capacity Investigation on Grade X70 High Strain Line Pipe With Girth Weld
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Topics: Pipes, Buckling, Pipelines, Deformation, Gas metal arc welding, Gas tungsten arc welding, Pipe bending, Base metals, Design, Electrical discharge machining
Journal Articles

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

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Tetsuya Tagawa, Toshihiko Amano, Takashi Hiraide, Takahiro Sakimoto, Satoshi Igi, Taishi Fujishiro, Takuya Hara, Takehiro Inoue, Shuji Aihara
Journal: Journal of Pressure Vessel Technology
Publisher: ASME
Article Type: Research-Article
J. Pressure Vessel Technol. October 2018, 140(5): 051205.
Paper No: PVT-18-1042
https://doi.org/10.1115/1.4040641
Published Online: August 2, 2018
View Articletitled, Inverse Fracture in DWTT and Brittle Crack Behavior in Large-Scale Brittle Crack Arrest Test
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Topics: Brittleness, Fracture (Materials), Fracture (Process)
Proceedings Papers

Simulation of Fatigue Crack Initiation in Heat Affected Zone Microstructure Using Crystal-Plasticity Finite Element Method

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Takashi Hiraide, Satoshi Igi, Tetsuya Tagawa, Rinsei Ikeda, Seiichiro Tsutsumi
Proc. ASME. PVP2017, Volume 6A: Materials and Fabrication, V06AT06A081, July 16–20, 2017
Publisher: American Society of Mechanical Engineers
Paper No: PVP2017-65947
https://doi.org/10.1115/PVP2017-65947
View Paper titled, Simulation of Fatigue Crack Initiation in Heat Affected Zone Microstructure Using Crystal-Plasticity Finite Element Method
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Topics: Crystals, Fatigue cracks, Finite element methods, Heat, Plasticity, Simulation, Stress, Base metals, Design, Fatigue
Proceedings Papers

Strain Capacity and Deformation Behavior of HFW Linepipe

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Satoshi Igi, Satoru Yabumoto, Teruki Sadasue, Hisakazu Tajika, Kenji Oi
Proc. ASME. IPC2016, Volume 2: Pipeline Safety Management Systems; Project Management, Design, Construction and Environmental Issues; Strain Based Design; Risk and Reliability; Northern Offshore and Production Pipelines, V002T06A009, September 26–30, 2016
Publisher: American Society of Mechanical Engineers
Paper No: IPC2016-64349
https://doi.org/10.1115/IPC2016-64349
View Paper titled, Strain Capacity and Deformation Behavior of HFW Linepipe
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Topics: Deformation, Compression, Pressure, Earthquake resistant design, Low temperature, Cable reels, Electrical resistance, Fracture toughness, Mechanical properties, Pipes
Proceedings Papers

Investigation of Crack Propagation Characteristics Using Instrumented Charpy and DWT Tests for Full-Scale Burst Tested 1219 mm OD Grade 550 (X80) Linepipe

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Satoshi Igi, Cindy Guan, Brian Rothwell, Takashi Hiraide
Proc. ASME. IPC2016, Volume 3: Operations, Monitoring and Maintenance; Materials and Joining, V003T05A007, September 26–30, 2016
Publisher: American Society of Mechanical Engineers
Paper No: IPC2016-64240
https://doi.org/10.1115/IPC2016-64240
View Paper titled, Investigation of Crack Propagation Characteristics Using Instrumented Charpy and DWT Tests for Full-Scale Burst Tested 1219 mm OD Grade 550 (X80) Linepipe
Open the PDF for Investigation of Crack Propagation Characteristics Using Instrumented Charpy and DWT Tests for Full-Scale Burst Tested 1219 mm OD Grade 550 (X80) Linepipe in another window
Topics: Crack propagation, Discrete wavelet transforms, Fracture (Materials), Separation (Technology), Design, Liquefied natural gas, Shorelines, Statistical process control, Technology management, Testing
Proceedings Papers

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

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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
Publisher: American Society of Mechanical Engineers
Paper No: IPC2016-64299
https://doi.org/10.1115/IPC2016-64299
View Paper titled, Experimental Study on Inverse Fracture in Drop-Weight Tear Test and Other Laboratory Test: Current Activities in HLP Committee, Japan, Report 2
Open the PDF for Experimental Study on Inverse Fracture in Drop-Weight Tear Test and Other Laboratory Test: Current Activities in HLP Committee, Japan, Report 2 in another window
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

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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
Publisher: American Society of Mechanical Engineers
Paper No: IPC2016-64308
https://doi.org/10.1115/IPC2016-64308
View Paper titled, 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
Open the PDF for 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 in another window
Topics: Fracture (Materials), Low temperature, Pipes, Steel, Fracture (Process), Temperature, Brittleness, Phase transition temperature, Cooling, American Petroleum Institute
Proceedings Papers

Analysis of Data From a Full-Scale Burst Test on 1219 mm OD Grade 550 Pipe: Implications for the Prediction of Fracture Velocity

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Brian Rothwell, Cindy Guan, Satoshi Igi
Proc. ASME. IPC2016, Volume 3: Operations, Monitoring and Maintenance; Materials and Joining, V003T05A006, September 26–30, 2016
Publisher: American Society of Mechanical Engineers
Paper No: IPC2016-64119
https://doi.org/10.1115/IPC2016-64119
View Paper titled, Analysis of Data From a Full-Scale Burst Test on 1219 mm OD Grade 550 Pipe: Implications for the Prediction of Fracture Velocity
Open the PDF for Analysis of Data From a Full-Scale Burst Test on 1219 mm OD Grade 550 Pipe: Implications for the Prediction of Fracture Velocity in another window
Topics: Fracture (Materials), Pipes, Fracture toughness, Pressure, Testing, Liquefied natural gas, Piping design, Pressure transducers, Shorelines, Technology management