1-20 of 45
Masao Toyoda
Close
Save search
Follow your search
Access your saved searches in your account
Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Proceedings Papers

Verification of Applicability of Battelle Two-Curve Method to Ultrahigh-Pressure Rich-Gas Pipelines Based on a Full-Scale Burst Test

Yasuhito Imai, Masaki Mitsuya, Masao Toyoda
Proc. ASME. IPC2018, Volume 3: Operations, Monitoring, and Maintenance; Materials and Joining, V003T05A006, September 24–28, 2018
Publisher: American Society of Mechanical Engineers
Paper No: IPC2018-78447
https://doi.org/10.1115/IPC2018-78447
View Paper titled, Verification of Applicability of Battelle Two-Curve Method to Ultrahigh-Pressure Rich-Gas Pipelines Based on a Full-Scale Burst Test
Open the PDF for Verification of Applicability of Battelle Two-Curve Method to Ultrahigh-Pressure Rich-Gas Pipelines Based on a Full-Scale Burst Test in another window
Topics: Pipelines, Pressure, Ductile fracture, Pipes, Fracture (Materials), Fracture toughness, Temperature, American Petroleum Institute, Computer simulation, Explosives
Journal Articles

Prediction of Ductile-to-Brittle Transition Under Different Strain Rates in Undermatched Welded Joints

Masahito Mochizuki, Masao Toyoda
Journal: Journal of Pressure Vessel Technology
Publisher: ASME
Article Type: Research Papers
J. Pressure Vessel Technol. June 2011, 133(3): 031401.
https://doi.org/10.1115/1.4002670
Published Online: March 29, 2011
View Article titled, Prediction of Ductile-to-Brittle Transition Under Different Strain Rates in Undermatched Welded Joints
Open the PDF for Prediction of Ductile-to-Brittle Transition Under Different Strain Rates in Undermatched Welded Joints in another window
Topics: Brittle fracture, Brittleness, Deformation, Ductile fracture, Dynamic testing (Materials), Fracture (Materials), Fracture (Process), Fracture toughness, Numerical analysis, Stress
Proceedings Papers

Evaluation of Strength Characteristics Considering Microscopic Heterogeneity of Structural Steels and Weld Zone by Using FEM-MD Coupling Method

Masahito Mochizuki, Ryota Higuchi, Jinya Katsuyama, Masao Toyoda
Proc. ASME. PVP2007, Volume 6: Materials and Fabrication, 117-124, July 22–26, 2007
Publisher: American Society of Mechanical Engineers
Paper No: PVP2007-26573
https://doi.org/10.1115/PVP2007-26573
View Paper titled, Evaluation of Strength Characteristics Considering Microscopic Heterogeneity of Structural Steels and Weld Zone by Using FEM-MD Coupling Method
Open the PDF for Evaluation of Strength Characteristics Considering Microscopic Heterogeneity of Structural Steels and Weld Zone by Using FEM-MD Coupling Method in another window
Topics: Finite element methods, Finite element model, Structural steel, Displacement, Stress concentration, Design, Fracture (Materials), Fracture (Process), Grain boundaries, Steel
Proceedings Papers

Study on Thickness and Actual Stress Measurement of Steel Structures Using Electromagnetic Acoustic Transducer

Kinya Mitani, Masahito Mochizuki, Masao Toyoda
Proc. ASME. PVP2007, Volume 6: Materials and Fabrication, 937-943, July 22–26, 2007
Publisher: American Society of Mechanical Engineers
Paper No: PVP2007-26460
https://doi.org/10.1115/PVP2007-26460
View Paper titled, Study on Thickness and Actual Stress Measurement of Steel Structures Using Electromagnetic Acoustic Transducer
Open the PDF for Study on Thickness and Actual Stress Measurement of Steel Structures Using Electromagnetic Acoustic Transducer in another window
Topics: Acoustics, Steel, Stress, Transducers, Longitudinal waves, Maintenance, Resonance, Sensors, Shear waves, Surfaces (Materials)
Proceedings Papers

Crack Growth Analyses of SCC Under Various Residual Stress Distributions Near the Piping Butt-Welding

Jinya Katsuyama, Wataru Asano, Kunio Onizawa, Masahito Mochizuki, Masao Toyoda
Proc. ASME. PVP2007, Volume 6: Materials and Fabrication, 965-972, July 22–26, 2007
Publisher: American Society of Mechanical Engineers
Paper No: PVP2007-26574
https://doi.org/10.1115/PVP2007-26574
View Paper titled, Crack Growth Analyses of SCC Under Various Residual Stress Distributions Near the Piping Butt-Welding
Open the PDF for Crack Growth Analyses of SCC Under Various Residual Stress Distributions Near the Piping Butt-Welding in another window
Topics: Butt welding, Fracture (Materials), Pipes, Stress, Welding, Welded joints, Engineering simulation, Simulation, Stainless steel, Stress analysis (Engineering)
Proceedings Papers

Effect of Surface-Machining and Butt-Welding on Residual Stress and Hardness of Type 316L Stainless Steel Pipes

Wataru Asano, Jinya Katsuyama, Kunio Onizawa, Masahito Mochizuki, Masao Toyoda
Proc. ASME. PVP2008, Volume 6: Materials and Fabrication, Parts A and B, 451-458, July 27–31, 2008
Publisher: American Society of Mechanical Engineers
Paper No: PVP2008-61441
https://doi.org/10.1115/PVP2008-61441
View Paper titled, Effect of Surface-Machining and Butt-Welding on Residual Stress and Hardness of Type 316L Stainless Steel Pipes
Open the PDF for Effect of Surface-Machining and Butt-Welding on Residual Stress and Hardness of Type 316L Stainless Steel Pipes in another window
Topics: Butt welding, Machining, Pipes, Stainless steel, Stress, Welding, Finite element methods, Simulation, Vickers hardness testing, Electron backscatter diffraction
Proceedings Papers

Compressive Strain Limits of High-Strength Linepipes

Nobuhisa Suzuki, Joe Zhou, Masao Toyoda
Proc. ASME. IPC2008, 2008 7th International Pipeline Conference, Volume 3, 737-744, September 29–October 3, 2008
Publisher: American Society of Mechanical Engineers
Paper No: IPC2008-64526
https://doi.org/10.1115/IPC2008-64526
View Paper titled, Compressive Strain Limits of High-Strength Linepipes
Open the PDF for Compressive Strain Limits of High-Strength Linepipes in another window
Topics: Compression, Finite element analysis, Hardening, Pipes, Pressure, Work hardening
Proceedings Papers

Parametric Study on the Effect of Geometric Imperfections on the Bending Capacity of High-Strength Linepipes

Takashi Sato, Yoshiki Mikami, Masahito Mochizuki, Nobuhisa Suzuki, Masao Toyoda
Proc. ASME. IPC2008, 2008 7th International Pipeline Conference, Volume 3, 745-753, September 29–October 3, 2008
Publisher: American Society of Mechanical Engineers
Paper No: IPC2008-64544
https://doi.org/10.1115/IPC2008-64544
View Paper titled, Parametric Study on the Effect of Geometric Imperfections on the Bending Capacity of High-Strength Linepipes
Open the PDF for Parametric Study on the Effect of Geometric Imperfections on the Bending Capacity of High-Strength Linepipes in another window
Topics: Design, Finite element model, Pressure, Strength (Materials)
Proceedings Papers

Full-Scale Burst Tests of Ultra-High Pressured Rich-Gas Pipelines Under Buried and Unburied Conditions

Shinobu Kawaguchi, Kazue Murai, Yoshikazu Hashimoto, Naoto Hagiwara, Hidekuni Yajima, Masao Toyoda
Proc. ASME. IPC2008, 2008 7th International Pipeline Conference, Volume 3, 327-336, September 29–October 3, 2008
Publisher: American Society of Mechanical Engineers
Paper No: IPC2008-64434
https://doi.org/10.1115/IPC2008-64434
View Paper titled, Full-Scale Burst Tests of Ultra-High Pressured Rich-Gas Pipelines Under Buried and Unburied Conditions
Open the PDF for Full-Scale Burst Tests of Ultra-High Pressured Rich-Gas Pipelines Under Buried and Unburied Conditions in another window
Topics: Pipelines, Pressure, Ductile fracture, Fracture (Materials), Fracture toughness, Hoop stress, Methane, Natural gas, Pipes, Sands
Proceedings Papers

Application of WES2808 to Brittle Fracture Assessment for High Strength Gas Pipelines

Takahiro Kubo, Satoshi Igi, Tsunehisa Handa, Nobuhisa Suzuki, Masao Toyoda, Mitsuru Ohata, Fumiyoshi Minami
Proc. ASME. OMAE2007, Volume 3: Pipeline and Riser Technology; CFD and VIV, 209-218, June 10–15, 2007
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2007-29246
https://doi.org/10.1115/OMAE2007-29246
View Paper titled, Application of WES2808 to Brittle Fracture Assessment for High Strength Gas Pipelines
Open the PDF for Application of WES2808 to Brittle Fracture Assessment for High Strength Gas Pipelines in another window
Topics: Brittle fracture, Pipelines, Fracture toughness, Fracture (Materials), Fracture (Process), Design, Pressurized gas, Structural elements (Construction), Tensile deformation, Welding
Proceedings Papers

Effect of Changes in Tensile Properties Due to Cold Bending on Large Deformation Behavior of High-Grade Cold Bend Pipe

Naoki Fukuda, Hiroshi Yatabe, Tomoki Masuda, Masao Toyoda
Proc. ASME. IPC2002, 4th International Pipeline Conference, Parts A and B, 363-370, September 29–October 3, 2002
Publisher: American Society of Mechanical Engineers
Paper No: IPC2002-27129
https://doi.org/10.1115/IPC2002-27129
View Paper titled, Effect of Changes in Tensile Properties Due to Cold Bending on Large Deformation Behavior of High-Grade Cold Bend Pipe
Open the PDF for Effect of Changes in Tensile Properties Due to Cold Bending on Large Deformation Behavior of High-Grade Cold Bend Pipe in another window
Topics: Deformation, Pipes, Tensile strength, American Petroleum Institute, Finite element analysis, Simulation, Work hardening
Proceedings Papers

Experimental Evaluation of Leak-Before-Break (LBB) Behavior for High-Grade Line Pipes With an Axial Through-Wall Flaw

Shinobu Kawaguchi, Masato Nakayama, Naoto Hagiwara, Tomoki Masuda, Masao Toyoda
Proc. ASME. OMAE2002, 21st International Conference on Offshore Mechanics and Arctic Engineering, Volume 3, 173-180, June 23–28, 2002
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2002-28204
https://doi.org/10.1115/OMAE2002-28204
View Paper titled, Experimental Evaluation of Leak-Before-Break (LBB) Behavior for High-Grade Line Pipes With an Axial Through-Wall Flaw
Open the PDF for Experimental Evaluation of Leak-Before-Break (LBB) Behavior for High-Grade Line Pipes With an Axial Through-Wall Flaw in another window
Topics: Leak-before-break, Pipes, Stress, Displacement, Fracture toughness, Hoop stress, Hydrostatics
Proceedings Papers

Analytical Study of Appropriate Design for the High-Grade Induction Bend Pipes Subjected to Large Ground Deformation

Hiroshi Yatabe, Naoki Fukuda, Tomoki Masuda, Masao Toyoda
Proc. ASME. OMAE2002, 21st International Conference on Offshore Mechanics and Arctic Engineering, Volume 3, 181-188, June 23–28, 2002
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2002-28209
https://doi.org/10.1115/OMAE2002-28209
View Paper titled, Analytical Study of Appropriate Design for the High-Grade Induction Bend Pipes Subjected to Large Ground Deformation
Open the PDF for Analytical Study of Appropriate Design for the High-Grade Induction Bend Pipes Subjected to Large Ground Deformation in another window
Topics: Deformation, Design, Electromagnetic induction, Pipes, Mechanical properties, Geometry, Dimensions, Finite element analysis, Pipelines, Pressure
Proceedings Papers

Changes in Tensile Properties Due to Cold Bending of Line Pipes

Naoki Fukuda, Hiroshi Yatabe, Tomoki Masuda, Masao Toyoda
Proc. ASME. OMAE2002, 21st International Conference on Offshore Mechanics and Arctic Engineering, Volume 3, 189-196, June 23–28, 2002
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2002-28210
https://doi.org/10.1115/OMAE2002-28210
View Paper titled, Changes in Tensile Properties Due to Cold Bending of Line Pipes
Open the PDF for Changes in Tensile Properties Due to Cold Bending of Line Pipes in another window
Topics: Pipes, Tensile strength, American Petroleum Institute, Finite element analysis, Yield stress
Proceedings Papers

Critical Compressive Strain of Linepipes Related to Workhardening Parameters

Nobuhisa Suzuki, Masao Toyoda
Proc. ASME. OMAE2002, 21st International Conference on Offshore Mechanics and Arctic Engineering, Volume 3, 217-224, June 23–28, 2002
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2002-28253
https://doi.org/10.1115/OMAE2002-28253
View Paper titled, Critical Compressive Strain of Linepipes Related to Workhardening Parameters
Open the PDF for Critical Compressive Strain of Linepipes Related to Workhardening Parameters in another window
Topics: American Petroleum Institute, Compression, Deformation, Finite element analysis, Hardening, Peak load, Piping design, Stress-strain relations
Journal Articles

Thermal Elastic-Plastic Analysis Considering Temperature Rise by Rapid Plastic Deformation in Undermatched Joints

Masahito Mochizuki, Gyu-Baek An, Masao Toyoda
Journal: Journal of Pressure Vessel Technology
Publisher: ASME
Article Type: Research Papers
J. Pressure Vessel Technol. June 2009, 131(3): 031202.
https://doi.org/10.1115/1.3027477
Published Online: February 4, 2009
View Article titled, Thermal Elastic-Plastic Analysis Considering Temperature Rise by Rapid Plastic Deformation in Undermatched Joints
Open the PDF for Thermal Elastic-Plastic Analysis Considering Temperature Rise by Rapid Plastic Deformation in Undermatched Joints in another window
Topics: Deformation, Steel, Stress, Temperature, Dynamic testing (Materials), Mechanical properties, Welded joints, Finite element analysis
Proceedings Papers

Local Buckling Behavior of X100 Linepipes

Nobuhisa Suzuki, Ryuji Muraoka, Alan Glover, Joe Zhou, Masao Toyoda
Proc. ASME. OMAE2003, Volume 3: Materials Technology; Ocean Engineering; Polar and Arctic Sciences and Technology; Workshops, 67-76, June 8–13, 2003
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2003-37145
https://doi.org/10.1115/OMAE2003-37145
View Paper titled, Local Buckling Behavior of X100 Linepipes
Open the PDF for Local Buckling Behavior of X100 Linepipes in another window
Topics: Buckling, Design, Compression, Finite element analysis, American Petroleum Institute, Modeling, Shells, Stress
Proceedings Papers

Application of Equivalent Damage Concept to Evaluation of Ductile Cracking for Linepipe Under Large Scale Seismic Loading

Mitsuru Ohata, Masao Toyoda
Proc. ASME. OMAE2003, Volume 3: Materials Technology; Ocean Engineering; Polar and Arctic Sciences and Technology; Workshops, 77-86, June 8–13, 2003
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2003-37184
https://doi.org/10.1115/OMAE2003-37184
View Paper titled, Application of Equivalent Damage Concept to Evaluation of Ductile Cracking for Linepipe Under Large Scale Seismic Loading
Open the PDF for Application of Equivalent Damage Concept to Evaluation of Ductile Cracking for Linepipe Under Large Scale Seismic Loading in another window
Topics: Damage, Ductile fracture, Pipes, Steel, Safety, Buckling, Deflection, Failure, Finite element analysis, Hardening
Proceedings Papers

Evaluation of Ductile Cracking Criterion for Grade X100 Linepipe and Relationship to Large Scale Fracture Behavior

Nobuyuki Ishikawa, Shigeru Endo, Alan Glover, David Horsley, Masao Toyoda
Proc. ASME. OMAE2003, Volume 3: Materials Technology; Ocean Engineering; Polar and Arctic Sciences and Technology; Workshops, 45-55, June 8–13, 2003
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2003-37100
https://doi.org/10.1115/OMAE2003-37100
View Paper titled, Evaluation of Ductile Cracking Criterion for Grade X100 Linepipe and Relationship to Large Scale Fracture Behavior
Open the PDF for Evaluation of Ductile Cracking Criterion for Grade X100 Linepipe and Relationship to Large Scale Fracture Behavior in another window
Topics: Ductile fracture, Fracture (Process), Steel, Finite element analysis, Brittle fracture, Pipes, Stress, Structural steel, Deformation, Design
Proceedings Papers

Modified Equation to Predict Leak/Rupture Criteria for Axially Through-Wall Notched X80 and X100 Linepipes Having Higher Charpy Energy

Shinobu Kawaguchi, Naoto Hagiwara, Mitsuru Ohata, Masao Toyoda
Proc. ASME. IPC2004, 2004 International Pipeline Conference, Volumes 1, 2, and 3, 1823-1832, October 4–8, 2004
Publisher: American Society of Mechanical Engineers
Paper No: IPC2004-0322
https://doi.org/10.1115/IPC2004-0322
View Paper titled, Modified Equation to Predict Leak/Rupture Criteria for Axially Through-Wall Notched X80 and X100 Linepipes Having Higher Charpy Energy
Open the PDF for Modified Equation to Predict Leak/Rupture Criteria for Axially Through-Wall Notched X80 and X100 Linepipes Having Higher Charpy Energy in another window
Topics: Leakage, Rupture, Notch testing, Pipes, American Petroleum Institute, Ductile fracture, Flow (Dynamics), Fracture toughness, Hoop stress, Hydrostatics