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Journal Articles

Determination and Sensitivity Analysis of Target Flaw Sizes for Performance Demonstration of Cast Austenitic Stainless Steel Pipe by Probabilistic Fracture Mechanics

Daiki Takagoshi, Yuji Momotani, Yuichiro Nomura, Wataru Nishi, Takatoshi Hirota, Kiminobu Hojo
Journal: Journal of Pressure Vessel Technology
Publisher: ASME
Article Type: Research-Article
J. Pressure Vessel Technol. April 2025, 147(2): 021303.
Paper No: PVT-23-1142
https://doi.org/10.1115/1.4067591
Published Online: January 29, 2025
View Article titled, Determination and Sensitivity Analysis of Target Flaw Sizes for Performance Demonstration of Cast Austenitic Stainless Steel Pipe by Probabilistic Fracture Mechanics
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Topics: Failure, Fracture (Materials), Fracture (Process), Fracture mechanics, Fracture toughness, Mechanical properties, Pipes, Probability, Stress, Tensile strength
Proceedings Papers

Research on Effects of Surface Finishing and Mean Stress on Fatigue Lives of Notched Specimens - Surface Finishing Effect for Notched Specimens of Low Alloy Steel

Yuichiro Nomura, Daiki Takagoshi, Seiji Asada, Atsushi Sugeta, Yoshihide Kitamura
Proc. ASME. PVP2024, Volume 2: Design & Analysis, V002T03A048, July 28–August 2, 2024
Publisher: American Society of Mechanical Engineers
Paper No: PVP2024-124661
https://doi.org/10.1115/PVP2024-124661
View Paper titled, Research on Effects of Surface Finishing and Mean Stress on Fatigue Lives of Notched Specimens - Surface Finishing Effect for Notched Specimens of Low Alloy Steel
Open the PDF for Research on Effects of Surface Finishing and Mean Stress on Fatigue Lives of Notched Specimens - Surface Finishing Effect for Notched Specimens of Low Alloy Steel in another window
Topics: Alloy steel, Fatigue, Fatigue strength, Finishes, Stress, Stress concentration, Surface finishing, Surface roughness
Proceedings Papers

Research on Effects of Surface Finishing and Mean Stress on Fatigue Lives of Notched Specimens - Mean Stress Effect for Notched Specimens of Low Alloy Steel

Yuichiro Nomura, Daiki Takagoshi, Seiji Asada, Atsushi Sugeta, Yoshihide Kitamura
Proc. ASME. PVP2024, Volume 2: Design & Analysis, V002T03A042, July 28–August 2, 2024
Publisher: American Society of Mechanical Engineers
Paper No: PVP2024-122454
https://doi.org/10.1115/PVP2024-122454
View Paper titled, Research on Effects of Surface Finishing and Mean Stress on Fatigue Lives of Notched Specimens - Mean Stress Effect for Notched Specimens of Low Alloy Steel
Open the PDF for Research on Effects of Surface Finishing and Mean Stress on Fatigue Lives of Notched Specimens - Mean Stress Effect for Notched Specimens of Low Alloy Steel in another window
Topics: Alloy steel, Design, Fatigue, Fatigue strength, Stress, Stress concentration, Surface finishing
Proceedings Papers

Research on Effects of Surface Finishing and Mean Stress on Fatigue Lives of Notched Specimens - Definition of Fatigue Life of Notched Specimen Using Crack Growth Analysis

Masao Itatani, Takuya Ogawa, Masahiro Takanashi, Yun Wang, Yuichiro Nomura, Yoshihide Kitamura
Proc. ASME. PVP2024, Volume 2: Design & Analysis, V002T03A045, July 28–August 2, 2024
Publisher: American Society of Mechanical Engineers
Paper No: PVP2024-123111
https://doi.org/10.1115/PVP2024-123111
View Paper titled, Research on Effects of Surface Finishing and Mean Stress on Fatigue Lives of Notched Specimens - Definition of Fatigue Life of Notched Specimen Using Crack Growth Analysis
Open the PDF for Research on Effects of Surface Finishing and Mean Stress on Fatigue Lives of Notched Specimens - Definition of Fatigue Life of Notched Specimen Using Crack Growth Analysis in another window
Topics: Alloys, Carbon steel, Fatigue, Fatigue cracks, Fatigue life, Finishes, Fracture (Materials), Steel, Stress, Stress concentration
Proceedings Papers

Research on Effects of Surface Finishing and Mean Stress on Fatigue Lives of Notched Specimens - Application of Elastic-Plastic FE Analyses for Notched Specimens of Low Alloy Steel

Daiki Takagoshi, Yuichiro Nomura, Seiji Asada, Yoshihide Kitamura
Proc. ASME. PVP2024, Volume 2: Design & Analysis, V002T03A040, July 28–August 2, 2024
Publisher: American Society of Mechanical Engineers
Paper No: PVP2024-121952
https://doi.org/10.1115/PVP2024-121952
View Paper titled, Research on Effects of Surface Finishing and Mean Stress on Fatigue Lives of Notched Specimens - Application of Elastic-Plastic FE Analyses for Notched Specimens of Low Alloy Steel
Open the PDF for Research on Effects of Surface Finishing and Mean Stress on Fatigue Lives of Notched Specimens - Application of Elastic-Plastic FE Analyses for Notched Specimens of Low Alloy Steel in another window
Topics: Alloy steel, Fatigue, Finite element analysis, Stress, Surface finishing
Proceedings Papers

Investigation of Surface Finish Effect on Fatigue Strength of Carbon and Low Alloy Steels

Seiji Asada, Akihiko Hirano, Yun Wang, Masao Itatani, Masahiro Takanashi, Yuichiro Nomura, Fumihiro Ochi, Takeshi Ogawa
Proc. ASME. PVP2022, Volume 2: Computer Technology and Bolted Joints; Design and Analysis, V002T03A041, July 17–22, 2022
Publisher: American Society of Mechanical Engineers
Paper No: PVP2022-84695
https://doi.org/10.1115/PVP2022-84695
View Paper titled, Investigation of Surface Finish Effect on Fatigue Strength of Carbon and Low Alloy Steels
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Topics: Alloy steel, Carbon, Design, Fatigue, Fatigue strength, Finishes
Proceedings Papers

Technical Basis for Revision of Code Case N-809 on Reference Fatigue Crack Growth Curves for Austenitic Stainless Steels in Pressurized Water Reactor Environments

Russell C. Cipolla, Warren H. Bamford, Kiminobu Hojo, Yuichiro Nomura
Proc. ASME. PVP2021, Volume 1: Codes and Standards, V001T01A001, July 13–15, 2021
Publisher: American Society of Mechanical Engineers
Paper No: PVP2021-61728
https://doi.org/10.1115/PVP2021-61728
View Paper titled, Technical Basis for Revision of Code Case N-809 on Reference Fatigue Crack Growth Curves for Austenitic Stainless Steels in Pressurized Water Reactor Environments
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Topics: Fatigue cracks, Pressurized water reactors, Stainless steel
Proceedings Papers

Cyclic Stress-Strain Curve of Austenitic Stainless Steels Applicable to Elastic-Plastic Stress Analysis

Seiji Asada, Yuichiro Nomura
Proc. ASME. PVP2021, Volume 2: Computer Technology and Bolted Joints; Design and Analysis, V002T03A051, July 13–15, 2021
Publisher: American Society of Mechanical Engineers
Paper No: PVP2021-60525
https://doi.org/10.1115/PVP2021-60525
View Paper titled, Cyclic Stress-Strain Curve of Austenitic Stainless Steels Applicable to Elastic-Plastic Stress Analysis
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Topics: Stainless steel, Stress analysis (Engineering), Stress-strain curves
Proceedings Papers

Development of New Design Fatigue Curves in Japan – Treatment of Variable Loading Amplitude Effect

Seiji Asada, Yuichiro Nomura
Proc. ASME. PVP2021, Volume 2: Computer Technology and Bolted Joints; Design and Analysis, V002T03A032, July 13–15, 2021
Publisher: American Society of Mechanical Engineers
Paper No: PVP2021-60418
https://doi.org/10.1115/PVP2021-60418
View Paper titled, Development of New Design Fatigue Curves in Japan – Treatment of Variable Loading Amplitude Effect
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Topics: Design, Fatigue
Proceedings Papers

Study on Incorporation of New Design Fatigue Curves and a New Environmental Fatigue Correction Factor for PWR Environment Into the JSME Environmental Fatigue Evaluation Method

Seiji Asada, Shengde Zhang, Masahiro Takanashi, Yuichiro Nomura
Proc. ASME. PVP2020, Volume 1: Codes and Standards, V001T01A009, August 3, 2020
Publisher: American Society of Mechanical Engineers
Paper No: PVP2020-21078
https://doi.org/10.1115/PVP2020-21078
View Paper titled, Study on Incorporation of New Design Fatigue Curves and a New Environmental Fatigue Correction Factor for PWR Environment Into the JSME Environmental Fatigue Evaluation Method
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Topics: Design, Evaluation methods, Fatigue, Japan Society of Mechanical Engineers, Pressurized water reactors, Stainless steel, Base metals, Fatigue analysis, Metals, Fatigue testing
Proceedings Papers

Fatigue Crack Growth Rates for Nickel Base Alloys in Air

Yuichiro Nomura, Kenji Yamamoto, Kiminobu Hojo
Proc. ASME. PVP2014, Volume 1: Codes and Standards, V001T01A020, July 20–24, 2014
Publisher: American Society of Mechanical Engineers
Paper No: PVP2014-28098
https://doi.org/10.1115/PVP2014-28098
View Paper titled, Fatigue Crack Growth Rates for Nickel Base Alloys in Air
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Topics: Alloys, Fatigue cracks, Nickel, Japan Society of Mechanical Engineers, Fitness-for-service, Maintenance, Nuclear power stations, Stress, Fatigue testing, Fracture (Materials)
Proceedings Papers

Effect of Surface Finish and Loading Conditions on the Low Cycle Fatigue Life of Stainless Steel Welded Piping in PWR Environment

Yuichi Fukuta, Yuichiro Nomura, Seiji Asada
Proc. ASME. PVP2013, Volume 1A: Codes and Standards, V01AT01A013, July 14–18, 2013
Publisher: American Society of Mechanical Engineers
Paper No: PVP2013-97157
https://doi.org/10.1115/PVP2013-97157
View Paper titled, Effect of Surface Finish and Loading Conditions on the Low Cycle Fatigue Life of Stainless Steel Welded Piping in PWR Environment
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Topics: Finishes, Low cycle fatigue, Pipes, Pressurized water reactors, Stainless steel, Fatigue, Fatigue analysis, Fatigue life, Japan Society of Mechanical Engineers, Polishing
Proceedings Papers

High Strain Rate Effects on Environment Assisted Fatigue for Austenitic Stainless Steels in PWR Environment

Yuichi Fukuta, Yuichiro Nomura, Toshiya Saruwatari, Seiji Asada
Proc. ASME. PVP2013, Volume 1A: Codes and Standards, V01AT01A014, July 14–18, 2013
Publisher: American Society of Mechanical Engineers
Paper No: PVP2013-97158
https://doi.org/10.1115/PVP2013-97158
View Paper titled, High Strain Rate Effects on Environment Assisted Fatigue for Austenitic Stainless Steels in PWR Environment
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Topics: Fatigue, Pressurized water reactors, Stainless steel, JSME Standards, Japan Society of Mechanical Engineers, Oxygen, Temperature
Proceedings Papers

Examination of Factors in the Modified Rate Approach Method Under Various Conditions

Yuichi Fukuta, Seiji Asada, Yuichiro Nomura, Hiroshi Kanasaki
Proc. ASME. PVP2011, Volume 1: Codes and Standards, 247-256, July 17–21, 2011
Publisher: American Society of Mechanical Engineers
Paper No: PVP2011-57435
https://doi.org/10.1115/PVP2011-57435
View Paper titled, Examination of Factors in the Modified Rate Approach Method Under Various Conditions
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Topics: Fatigue, Fatigue damage, Fatigue life, Temperature, Water, Water chemistry
Proceedings Papers

Effects of Continuous Strain Rate Changing on Environmental Fatigue for Stainless Steels in PWR Environment

Yuichiro Nomura, Seiji Asada, Takao Nakamura, Masakazu Tanaka
Proc. ASME. PVP2010, ASME 2010 Pressure Vessels and Piping Conference: Volume 1, 209-214, July 18–22, 2010
Publisher: American Society of Mechanical Engineers
Paper No: PVP2010-25194
https://doi.org/10.1115/PVP2010-25194
View Paper titled, Effects of Continuous Strain Rate Changing on Environmental Fatigue for Stainless Steels in PWR Environment
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Topics: Fatigue, Pressurized water reactors, Stainless steel, Fatigue life, Fatigue testing, Waves, Boiling water reactors, Transients (Dynamics), Water
Proceedings Papers

Final Proposal of Environmental Fatigue Life Correction Factor (F en ) for Structural Materials in LWR Water Environment

Makoto Higuchi, Katsumi Sakaguchi, Yuichiro Nomura, Akihiko Hirano
Proc. ASME. PVP2007, Volume 1: Codes and Standards, 111-122, July 22–26, 2007
Publisher: American Society of Mechanical Engineers
Paper No: PVP2007-26100
https://doi.org/10.1115/PVP2007-26100
View Paper titled, Final Proposal of Environmental Fatigue Life Correction Factor (F en ) for Structural Materials in LWR Water Environment
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Topics: Fatigue life, Light water reactors, Water, Alloys, Carbon, Nickel, Stainless steel, Boiling water reactors, Coolants, Fatigue damage
Proceedings Papers

Effects of Strain Holding and Continuously Changing Strain Rate on Fatigue Life Reduction of Structural Materials in Simulated LWR Water

Makoto Higuchi, Katsumi Sakaguchi, Yuichiro Nomura
Proc. ASME. PVP2007, Volume 1: Codes and Standards, 123-131, July 22–26, 2007
Publisher: American Society of Mechanical Engineers
Paper No: PVP2007-26101
https://doi.org/10.1115/PVP2007-26101
View Paper titled, Effects of Strain Holding and Continuously Changing Strain Rate on Fatigue Life Reduction of Structural Materials in Simulated LWR Water
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Topics: Fatigue life, Light water reactors, Water, Waves, Cycles, Fatigue testing, Transients (Dynamics), Boiling water reactors, Fatigue, Pressurized water reactors
Proceedings Papers

Fatigue Crack Growth Rate for Nickel-Based Alloys in PWR Environment

Yuichiro Nomura, Hiroshi Kanasaki
Proc. ASME. PVP2007, Volume 1: Codes and Standards, 143-149, July 22–26, 2007
Publisher: American Society of Mechanical Engineers
Paper No: PVP2007-26185
https://doi.org/10.1115/PVP2007-26185
View Paper titled, Fatigue Crack Growth Rate for Nickel-Based Alloys in PWR Environment
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Topics: Alloys, Fatigue cracks, Nickel, Pressurized water reactors, Stress, Temperature, Water, Fatigue testing, Ferrites (Magnetic materials), Japan Society of Mechanical Engineers
Proceedings Papers

Fatigue Crack Growth Rate Curve for Nickel Based Alloys in PWR Environment

Yuichiro Nomura, Katsumi Sakaguchi, Hiroshi Kanasaki
Proc. ASME. PVP2007, Volume 1: Codes and Standards, 151-159, July 22–26, 2007
Publisher: American Society of Mechanical Engineers
Paper No: PVP2007-26186
https://doi.org/10.1115/PVP2007-26186
View Paper titled, Fatigue Crack Growth Rate Curve for Nickel Based Alloys in PWR Environment
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Topics: Alloys, Fatigue cracks, Nickel, Pressurized water reactors, Stress, Stainless steel, Welding, Fatigue testing, Ferrites (Magnetic materials), Heat
Proceedings Papers

The Modified Rate Approach Method to Evaluate Fatigue Life Under Synchronously Changing Temperature and Strain Rate in Elevated Temperature Water in Austenitic Stainless Steel

Yuichiro Nomura, Makoto Higuchi, Yasuhide Asada, Katsumi Sakaguchi
Proc. ASME. PVP2004, Pressure Vessel and Piping Codes and Standards, 101-108, July 25–29, 2004
Publisher: American Society of Mechanical Engineers
Paper No: PVP2004-2679
https://doi.org/10.1115/PVP2004-2679
View Paper titled, The Modified Rate Approach Method to Evaluate Fatigue Life Under Synchronously Changing Temperature and Strain Rate in Elevated Temperature Water in Austenitic Stainless Steel
Open the PDF for The Modified Rate Approach Method to Evaluate Fatigue Life Under Synchronously Changing Temperature and Strain Rate in Elevated Temperature Water in Austenitic Stainless Steel in another window
Topics: Fatigue life, Stainless steel, Temperature, Water, Light water reactors, Fatigue damage, Steel, Transients (Dynamics)