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Proceedings Papers

Design Margins of Fatigue Life of Carbon Steel Elbows and Tees Subjected to Reversing Dynamic Loads

Kisaburo Azuma, Keita Fujiwara, Satoru Kai, Akihito Otani, Osamu Furuya
Proc. ASME. PVP2024, Volume 5: Operations, Applications, & Components; Seismic Engineering; ASME Nondestructive Evaluation, Diagnosis and Prognosis (NDPD) Division, V005T08A020, July 28–August 2, 2024
Publisher: American Society of Mechanical Engineers
Paper No: PVP2024-123304
https://doi.org/10.1115/PVP2024-123304
View Paper titled, Design Margins of Fatigue Life of Carbon Steel Elbows and Tees Subjected to Reversing Dynamic Loads
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Topics: Carbon steel, Design, Earthquake resistant design, Fatigue life, Low cycle fatigue, Pipes, Stress, Cycles, Pipe fittings, Piping systems
Proceedings Papers

Uncertain Factors in Elastic-Plastic Finite Element Analysis for Elbows and Tees

Kisaburo Azuma, Keita Fujiwara, Satoru Kai, Akihito Otani, Osamu Furuya
Proc. ASME. PVP2023, Volume 7: Seismic Engineering; ASME Nondestructive Evaluation, Diagnosis and Prognosis (NDPD) Division, V007T08A012, July 16–21, 2023
Publisher: American Society of Mechanical Engineers
Paper No: PVP2023-106166
https://doi.org/10.1115/PVP2023-106166
View Paper titled, Uncertain Factors in Elastic-Plastic Finite Element Analysis for Elbows and Tees
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Topics: Finite element analysis, Low cycle fatigue
Journal Articles

Closed-Form Stress Intensity Factor Solutions for Circumferential and Axial Surface Cracks With Large Aspect Ratios in Pipes

Kisaburo Azuma, Yinsheng Li
Journal: Journal of Pressure Vessel Technology
Publisher: ASME
Article Type: Research-Article
J. Pressure Vessel Technol. December 2022, 144(6): 061303.
Paper No: PVT-21-1135
https://doi.org/10.1115/1.4054365
Published Online: May 6, 2022
View Articletitled, Closed-Form Stress Intensity Factor Solutions for Circumferential and Axial Surface Cracks With Large Aspect Ratios in Pipes
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Topics: Finite element analysis, Fracture (Materials), Stress, Surface cracks, Cylinders
Includes: Supplementary data
Proceedings Papers

Pilot Study on Seismic Fragility Evaluation for Degraded Austenitic Stainless Steel Piping Using the Probabilistic Fracture Mechanics Code PASCAL-SP

Kisaburo Azuma, Yoshihito Yamaguchi, Yinsheng Li
Proc. ASME. PVP2021, Volume 4: Materials and Fabrication, V004T06A063, July 13–15, 2021
Publisher: American Society of Mechanical Engineers
Paper No: PVP2021-62233
https://doi.org/10.1115/PVP2021-62233
View Paper titled, Pilot Study on Seismic Fragility Evaluation for Degraded Austenitic Stainless Steel Piping Using the Probabilistic Fracture Mechanics Code PASCAL-SP
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Topics: Fracture mechanics, Pipes, Stainless steel, Inspection, Maintenance, Stress corrosion cracking, Failure, Probabilistic risk assessment, Probability, Design
Journal Articles

Effects of Crack Closure on the Fatigue Crack Growth Rates of Ferritic Steels Subjected to Severe Reversing Loads

Kisaburo Azuma, Shinjiro Hidaka, Yasuhiro Yamazaki
Journal: Journal of Pressure Vessel Technology
Publisher: ASME
Article Type: Research-Article
J. Pressure Vessel Technol. December 2020, 142(6): 061503.
Paper No: PVT-19-1253
https://doi.org/10.1115/1.4047177
Published Online: June 10, 2020
View Articletitled, Effects of Crack Closure on the Fatigue Crack Growth Rates of Ferritic Steels Subjected to Severe Reversing Loads
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Topics: Fatigue cracks, Fracture (Materials), Stress, Steel
Journal Articles

Closed-Form Stress Intensity Factor Solutions for Surface Cracks With Large Aspect Ratios in Plates

Kisaburo Azuma, Yinsheng Li, Steven Xu
Journal: Journal of Pressure Vessel Technology
Publisher: ASME
Article Type: Research-Article
J. Pressure Vessel Technol. April 2020, 142(2): 021207.
Paper No: PVT-19-1109
https://doi.org/10.1115/1.4045029
Published Online: November 28, 2019
View Articletitled, Closed-Form Stress Intensity Factor Solutions for Surface Cracks With Large Aspect Ratios in Plates
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Topics: Finite element analysis, Fracture (Materials), Plates (structures), Stress, Surface cracks, Curve fitting, Polynomials, Stress concentration
Proceedings Papers

Fatigue Crack Growth in Low Alloy Steels Under Tension-Compression Loading in Air

Kisaburo Azuma, Yasuhiro Yamazaki
Proc. ASME. PVP2018, Volume 1A: Codes and Standards, V01AT01A006, July 15–20, 2018
Publisher: American Society of Mechanical Engineers
Paper No: PVP2018-84467
https://doi.org/10.1115/PVP2018-84467
View Paper titled, Fatigue Crack Growth in Low Alloy Steels Under Tension-Compression Loading in Air
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Topics: Alloy steel, Compression, Fatigue cracks, Tension, Fracture (Materials), Stress, ASME Boiler and Pressure Vessel Code, ASME Standards, Cycles, Nuclear power stations
Proceedings Papers

Closed-Form Stress Intensity Factor Solutions for Deep Surface Cracks in Cylinders Subjected to Global Bending

Kisaburo Azuma, Yinsheng Li, Kunio Hasegawa, Do Jun Shim
Proc. ASME. PVP2017, Volume 6A: Materials and Fabrication, V06AT06A072, July 16–20, 2017
Publisher: American Society of Mechanical Engineers
Paper No: PVP2017-65198
https://doi.org/10.1115/PVP2017-65198
View Paper titled, Closed-Form Stress Intensity Factor Solutions for Deep Surface Cracks in Cylinders Subjected to Global Bending
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Topics: Cylinders, Stress, Surface cracks, Fracture (Materials), Stress corrosion cracking, Water, Alloys, ASME Boiler and Pressure Vessel Code, Crack propagation, Failure
Proceedings Papers

Study on the Relationship Between Interaction Factors and Stress Intensity Factor for Elliptical Flaws

Kisaburo Azuma, Yinsheng Li, Kunio Hasegawa
Proc. ASME. PVP2017, Volume 1A: Codes and Standards, V01AT01A049, July 16–20, 2017
Publisher: American Society of Mechanical Engineers
Paper No: PVP2017-65199
https://doi.org/10.1115/PVP2017-65199
View Paper titled, Study on the Relationship Between Interaction Factors and Stress Intensity Factor for Elliptical Flaws
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Topics: Stress, Fracture (Materials), Finite element analysis, Tension
Proceedings Papers

Closed-Form Stress Intensity Factor Solutions for Deep Surface Cracks in Plates

Kisaburo Azuma, Yinsheng Li, Kunio Hasegawa, Steven Xu
Proc. ASME. PVP2017, Volume 1B: Codes and Standards, V01BT01A053, July 16–20, 2017
Publisher: American Society of Mechanical Engineers
Paper No: PVP2017-66092
https://doi.org/10.1115/PVP2017-66092
View Paper titled, Closed-Form Stress Intensity Factor Solutions for Deep Surface Cracks in Plates
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Topics: Plates (structures), Stress, Surface cracks, Fracture (Materials), Stress corrosion cracking, Alloys, ASME Boiler and Pressure Vessel Code, Crack propagation, Curve fitting, Failure
Proceedings Papers

Simulation on Propagation and Coalescence of Fatigue Crack by Automatic Three-Dimensional Finite Element Crack Propagation System

Hiroaki Doi, Kisaburo Azuma
Proc. ASME. PVP2016, Volume 6A: Materials and Fabrication, V06AT06A002, July 17–21, 2016
Publisher: American Society of Mechanical Engineers
Paper No: PVP2016-63151
https://doi.org/10.1115/PVP2016-63151
View Paper titled, Simulation on Propagation and Coalescence of Fatigue Crack by Automatic Three-Dimensional Finite Element Crack Propagation System
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Topics: Crack propagation, Fatigue cracks, Finite element analysis, Simulation, Fracture (Materials), Stress, Cycles, Fatigue testing, Finite element methods, Finite element model
Proceedings Papers

Stress Intensity Factor Solutions for Circumferential Surface Cracks With Large Aspect Ratios in Pipes Subjected to Global Bending

Kisaburo Azuma, Yinsheng Li, Kunio Hasegawa, Do Jun Shim
Proc. ASME. PVP2016, Volume 1A: Codes and Standards, V01AT01A012, July 17–21, 2016
Publisher: American Society of Mechanical Engineers
Paper No: PVP2016-63424
https://doi.org/10.1115/PVP2016-63424
View Paper titled, Stress Intensity Factor Solutions for Circumferential Surface Cracks With Large Aspect Ratios in Pipes Subjected to Global Bending
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Topics: Pipes, Stress, Surface cracks, Fracture (Materials), Piping systems, Finite element analysis, Pipe sizes, Stress corrosion cracking, Wall thickness, Water
Proceedings Papers

Characterization of Interaction Between Elliptical Subsurface Flaws

Kisaburo Azuma, Yinsheng Li, Kunio Hasegawa
Proc. ASME. PVP2016, Volume 1B: Codes and Standards, V01BT01A008, July 17–21, 2016
Publisher: American Society of Mechanical Engineers
Paper No: PVP2016-63429
https://doi.org/10.1115/PVP2016-63429
View Paper titled, Characterization of Interaction Between Elliptical Subsurface Flaws
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Topics: Finite element analysis, Fitness-for-service, Shapes, Stress, Structures, Tension
Proceedings Papers

Evaluation of Stress Intensity Factor Interactions Between Adjacent Flaws With Large Aspect Ratios

Kisaburo Azuma, Yinsheng Li, Kunio Hasegawa
Proc. ASME. PVP2015, Volume 1A: Codes and Standards, V01AT01A019, July 19–23, 2015
Publisher: American Society of Mechanical Engineers
Paper No: PVP2015-45063
https://doi.org/10.1115/PVP2015-45063
View Paper titled, Evaluation of Stress Intensity Factor Interactions Between Adjacent Flaws With Large Aspect Ratios
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Topics: Stress, Finite element analysis, In-service inspection, Membranes