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Proceedings Papers

Evaluation on Weldability of Nickel-Base Alloy Weld Materials With High Chromium Content

Yoshinori Katayama, Takahiro Hayashi, Daiki Tanaka, Hidenori Takahashi

Proc. ASME. ICONE29, Volume 10: Advanced Methods of Manufacturing for Nuclear Reactors and Components, V010T10A003, August 8–12, 2022

Paper No: ICONE29-89096

DOI: https://doi.org/10.1115/ICONE29-89096

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Topics: Alloys, Cracking (Materials), Ductility, Fracture (Process), Nickel, Solidification

Proceedings Papers

Study on Ductile Crack Extension and Fracture Behavior in Plate Specimen With a Semi-Elliptical Surface Crack Using a BWR Reactor Pressure Vessel Material

Takahiro Hayashi, Takuya Ogawa, Shuichi Yoshida, Masao Itatani, Toshiyuki Saito

Proc. ASME. PVP2022, Volume 4B: Materials and Fabrication, V04BT06A020, July 17–22, 2022

Paper No: PVP2022-84606

DOI: https://doi.org/10.1115/PVP2022-84606

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Topics: Boiling water reactors, Ductile fracture, Fracture (Materials), Fracture (Process), Fracture mechanics, Metals, Reactor vessels, Stress corrosion cracking, Surface cracks

Proceedings Papers

Study on Fracture Behavior and Assessment for Dissimilar Metal Weld of Low Alloy Steel and Ni-Base Alloy Weld Using a BWR Reactor Pressure Vessel Material

Takahiro Hayashi, Takuya Ogawa, Shuichi Yoshida, Masao Itatani, Yasuhiro Hattori, Tetsushi Yamaoka, Shigeaki Tanaka, Toshiyuki Saito

Proc. ASME. PVP2021, Volume 4: Materials and Fabrication, V004T06A047, July 13–15, 2021

Paper No: PVP2021-61467

DOI: https://doi.org/10.1115/PVP2021-61467

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Topics: Alloy steel, Alloys, Boiling water reactors, Fracture (Materials), Fracture mechanics, Fracture toughness, Metals, Reactor vessels, Stress corrosion cracking

Proceedings Papers

SCC Growth Prediction for Surface Crack in Welded Joint Using Advanced FEA

Takuya Ogawa, Masao Itatani, Takahiro Hayashi, Toshiyuki Saito

Proc. ASME. PVP2020, Volume 6: Materials and Fabrication, V006T06A080, August 3, 2020

Paper No: PVP2020-21670

DOI: https://doi.org/10.1115/PVP2020-21670

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Topics: Finite element analysis, Surface cracks, Welded joints, Fracture (Materials), Fracture (Process), Shapes, Fitness-for-service, Metals, Stainless steel, Base metals

Proceedings Papers

Investigation on the Effects of Carbon Macro-Segregation of Mechanical Properties Using a Large-Scale Forged Low Alloy Steel for a BWR Reactor Pressure Vessel

Takahiro Hayashi, Takuya Ogawa, Rie Sumiya, Tetsushi Yamaoka, Shigeaki Tanaka, Yasuhiro Hattori, Atsushi Mori

Proc. ASME. PVP2020, Volume 6: Materials and Fabrication, V006T06A082, August 3, 2020

Paper No: PVP2020-21857

DOI: https://doi.org/10.1115/PVP2020-21857

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Topics: Alloy steel, Boiling water reactors, Carbon, Fracture toughness, Iron and steel making, Mechanical properties, Pressure vessels, Reactor vessels

Proceedings Papers

Fracture Toughness Criteria of Irradiated Austenitic Stainless Steels for Structural Integrity Evaluation of BWR Internal Components

Takahiro Hayashi, Shigeaki Tanaka, Tomonori Abe, Seiji Sakuraya, Suguru Ooki, Takayuki Kaminaga

Proc. ASME. PVP2019, Volume 6B: Materials and Fabrication, V06BT06A017, July 14–19, 2019

Paper No: PVP2019-93441

DOI: https://doi.org/10.1115/PVP2019-93441

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Topics: Boiling water reactors, Fracture toughness, Irradiation (Radiation exposure), Neutrons, Stainless steel

Journal Articles

Detection of a Defect on the Back of a Pipe by Noncontact Remote Measurements

Takahiro Hayashi

J. Pressure Vessel Technol. December 2018, 140(6): 061401.

Paper No: PVT-17-1081

DOI: https://doi.org/10.1115/1.4041433

Published Online: November 12, 2018

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Topics: Pipes, Resonance, Lasers, Waves

Proceedings Papers

SCC Crack Growth Analysis for a Dissimilar Metal Weld Using Advanced FEA

Takuya Ogawa, Masao Itatani, Takahiro Hayashi, Toshiyuki Saito

Proc. ASME. PVP2018, Volume 6A: Materials and Fabrication, V06AT06A001, July 15–20, 2018

Paper No: PVP2018-84513

DOI: https://doi.org/10.1115/PVP2018-84513

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Topics: Finite element analysis, Fracture (Materials), Metals, Boiling water reactors, Fitness-for-service, Japan Society of Mechanical Engineers, Pressurized water reactors, Stress corrosion cracking, Anisotropy, Finite element model

Journal Articles

Adhesive Bond Imaging by Noncontact Measurements With Single-Sided Access

Shogo Nakao, Takahiro Hayashi

ASME J Nondestructive Evaluation. May 2018, 1(2): 021009–021009-5.

Paper No: NDE-17-1098

DOI: https://doi.org/10.1115/1.4039229

Published Online: February 23, 2018

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Topics: Adhesives, Imaging, Plates (structures), Waves, Flat plates, Lasers

Proceedings Papers

Technical Basis for the Exemptions to Mandatory Post Weld Heat Treatment (PWHT) of SA-738 Grade B for Sec. III Div. 1 Subsection NE Application

Takahiro Hayashi, Charles C. Kim, Kohki Kumagai, Mitsuhiro Goto, Shiro Otake

Proc. ASME. PVP2017, Volume 6B: Materials and Fabrication, V06BT06A025, July 16–20, 2017

Paper No: PVP2017-65694

DOI: https://doi.org/10.1115/PVP2017-65694

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Topics: Heat treating (Metalworking), ASME Boiler and Pressure Vessel Code, Fracture toughness, Iron and steel making, Materials properties, Plates (structures), Process control, Steel, Structural elements (Construction), Welding

Proceedings Papers

Retardation Effect of Cyclic Overload on Stress Corrosion Crack Growth in Stainless Steel

Toshiyuki Saito, Takahiro Hayashi, Chihiro Narazaki, Mikiro Itow

Proc. ASME. PVP2017, Volume 6B: Materials and Fabrication, V06BT06A062, July 16–20, 2017

Paper No: PVP2017-65968

DOI: https://doi.org/10.1115/PVP2017-65968

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Topics: Stainless steel, Stress corrosion cracking, Boiling water reactors, Fitness-for-service, Stress, Earthquakes, Fracture (Materials), Japan Society of Mechanical Engineers, Nuclear power stations, Welding

Proceedings Papers

Evaluation of Fracture Characteristics of Ni-Base Weld Metal for BWR Components

Masao Itatani, Toshiyuki Saito, Takahiro Hayashi, Chihiro Narazaki, Kazuo Ogawa, Masaaki Kikuchi

Proc. ASME. PVP2009, Volume 1: Codes and Standards, 419-427, July 26–30, 2009

Paper No: PVP2009-77720

DOI: https://doi.org/10.1115/PVP2009-77720

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Topics: Boiling water reactors, Fracture (Materials), Fracture (Process), Metals, Stress, Alloys, Ductile fracture, Flow (Dynamics), Fracture toughness, Temperature

Proceedings Papers

Fracture Assessment of Austenitic Stainless Steel Piping With Twin Flaws in TIG Weld

Masao Itatani, Chihiro Narazaki, Takahiro Hayashi, Toshiyuki Saito, Takuya Ogawa

Proc. ASME. PVP2009, Volume 1: Codes and Standards, 215-221, July 26–30, 2009

Paper No: PVP2009-77717

DOI: https://doi.org/10.1115/PVP2009-77717

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Topics: Fracture (Materials), Pipes, Stainless steel, Stress, Fracture (Process), Boiling water reactors, Electrical discharge machining, Base metals, Failure, Metals

Proceedings Papers

Evaluation for Environmental Fatigue of Notched Specimen of Ni-Base Alloy

Masao Itatani, Katsumi Sakaguchi, Toshiyuki Saito, Takahiro Hayashi

Proc. ASME. PVP2007, Volume 1: Codes and Standards, 213-218, July 22–26, 2007

Paper No: PVP2007-26379

DOI: https://doi.org/10.1115/PVP2007-26379

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Topics: Alloys, Fatigue, Water, Fatigue life, Stress, Finite element methods, Fatigue testing, High temperature, Carbon steel, Crack propagation

Proceedings Papers

Evaluation of Stress Intensity Factor for Transverse Cracks in Weld Joint of BWR Shroud Support and Its Application to the Evaluation of Trapezoidal Crack

Masao Itatani, Toshiyuki Saito, Takahiro Hayashi, Chihiro Narazaki, Kazuo Ogawa

Proc. ASME. PVP2008, Volume 6: Materials and Fabrication, Parts A and B, 1143-1150, July 27–31, 2008

Paper No: PVP2008-61456

DOI: https://doi.org/10.1115/PVP2008-61456

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Topics: Boiling water reactors, Fracture (Materials), Stress, Alloys, Metals, Evaluation methods, Shapes, Base metals, Engineering standards, Finite element methods

Proceedings Papers

Welding Residual Stress Analysis Using Axisymmetric Modeling for Shroud Support Structure

Kazuo Ogawa, Yukihiko Okuda, Toshiyuki Saito, Takahiro Hayashi, Rie Sumiya

Proc. ASME. PVP2008, Volume 6: Materials and Fabrication, Parts A and B, 289-297, July 27–31, 2008

Paper No: PVP2008-61148

DOI: https://doi.org/10.1115/PVP2008-61148

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Topics: Modeling, Stress analysis (Engineering), Welding, Boiling water reactors, Stress, Manufacturing, Welded joints, Fracture (Materials), Residual stresses, Safety

Proceedings Papers

Ultrasonic Flexural Torsional Guided Wave Pipe Inspection Potential

Zongqi Sun, Li Zhang, Brian Gavigan, Takahiro Hayashi, Joseph L. Rose

Proc. ASME. PVP2003, Ultrasonic Nondestructive Evaluation for Material Science and Industries, 29-34, July 20–24, 2003

Paper No: PVP2003-1849

DOI: https://doi.org/10.1115/PVP2003-1849

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Topics: Inspection, Pipes, Waves, Computation, Excitation, Shapes

Proceedings Papers

Guided Wave Propagation Mechanics Across a Pipe Elbow

Takahiro Hayashi, Koichiro Kawashima, Zongqi Sun, Joseph L. Rose

Proc. ASME. PVP2003, Ultrasonic Nondestructive Evaluation for Material Science and Industries, 43-47, July 20–24, 2003

Paper No: PVP2003-1851

DOI: https://doi.org/10.1115/PVP2003-1851

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Topics: Pipes, Wave propagation, Waves, Finite element methods, Computer simulation, Echoes, Modeling, Nondestructive evaluation

Proceedings Papers

Guided Wave Focusing Mechanics in Pipe

Takahiro Hayashi, Koichiro Kawashima, Zongqi Sun, Joseph L. Rose

Proc. ASME. PVP2003, Ultrasonic Nondestructive Evaluation for Material Science and Industries, 35-41, July 20–24, 2003

Paper No: PVP2003-1850

DOI: https://doi.org/10.1115/PVP2003-1850

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Topics: Pipes, Waves, Finite element methods, Inspection, Reflection

Proceedings Papers

Circumferential Guided Wave Inspection for a Defect at Inner Surface of a Pipe

Takahiro Hayashi, Hisashi Nagamizo, Shinya Nakamura, Morimasa Murase, Koichiro Kawashima

Proc. ASME. PVP2004, Recent Advances in Nondestructive Evaluation Techniques for Material Science and Industries, 13-17, July 25–29, 2004

Paper No: PVP2004-2808

DOI: https://doi.org/10.1115/PVP2004-2808

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Topics: Guided wave ultrasonic testing, Pipes, Waves, Signals, Transducers, Finite element analysis, Modal analysis, Quantum mechanics, Simulation, Ultrasonic waves

Journal citation

NARROW

Evaluation on Weldability of Nickel-Base Alloy Weld Materials With High Chromium Content

Study on Ductile Crack Extension and Fracture Behavior in Plate Specimen With a Semi-Elliptical Surface Crack Using a BWR Reactor Pressure Vessel Material

Study on Fracture Behavior and Assessment for Dissimilar Metal Weld of Low Alloy Steel and Ni-Base Alloy Weld Using a BWR Reactor Pressure Vessel Material

SCC Growth Prediction for Surface Crack in Welded Joint Using Advanced FEA

Investigation on the Effects of Carbon Macro-Segregation of Mechanical Properties Using a Large-Scale Forged Low Alloy Steel for a BWR Reactor Pressure Vessel

Fracture Toughness Criteria of Irradiated Austenitic Stainless Steels for Structural Integrity Evaluation of BWR Internal Components

Detection of a Defect on the Back of a Pipe by Noncontact Remote Measurements

SCC Crack Growth Analysis for a Dissimilar Metal Weld Using Advanced FEA

Adhesive Bond Imaging by Noncontact Measurements With Single-Sided Access

Technical Basis for the Exemptions to Mandatory Post Weld Heat Treatment (PWHT) of SA-738 Grade B for Sec. III Div. 1 Subsection NE Application

Retardation Effect of Cyclic Overload on Stress Corrosion Crack Growth in Stainless Steel

Evaluation of Fracture Characteristics of Ni-Base Weld Metal for BWR Components

Fracture Assessment of Austenitic Stainless Steel Piping With Twin Flaws in TIG Weld

Evaluation for Environmental Fatigue of Notched Specimen of Ni-Base Alloy

Evaluation of Stress Intensity Factor for Transverse Cracks in Weld Joint of BWR Shroud Support and Its Application to the Evaluation of Trapezoidal Crack

Welding Residual Stress Analysis Using Axisymmetric Modeling for Shroud Support Structure

Ultrasonic Flexural Torsional Guided Wave Pipe Inspection Potential

Guided Wave Propagation Mechanics Across a Pipe Elbow

Guided Wave Focusing Mechanics in Pipe

Circumferential Guided Wave Inspection for a Defect at Inner Surface of a Pipe

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