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Proceedings Papers

Improvement of Target Flaw Sizes of CASS Pipe for PD Approval Using PFM Code Preface

Wataru Nishi, Takatoshi Hirota, Mayumi Ochi, Daiki Takagoshi, Kiminobu Hojo

Proc. ASME. PVP2018, Volume 1A: Codes and Standards, V01AT01A055, July 15–20, 2018

Paper No: PVP2018-85015

DOI: https://doi.org/10.1115/PVP2018-85015

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Topics: Pipes, Ferrites (Magnetic materials), Collapse, Mechanical properties, Stress, Ductile fracture, Failure mechanisms, Fracture mechanics, Nondestructive evaluation, Sensitivity analysis

Proceedings Papers

Comparison of Prediction Models for Mechanical Properties of Thermally Aged Cast Austenitic Stainless Steels

Takatoshi Hirota, Mayumi Ochi, Kiminobu Hojo, Wataru Nishi, Shotaro Hayashi

Proc. ASME. PVP2017, Volume 1A: Codes and Standards, V01AT01A054, July 16–20, 2017

Paper No: PVP2017-65612

DOI: https://doi.org/10.1115/PVP2017-65612

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Topics: Mechanical properties, Stainless steel, Pressurized water reactors, Pipes, Databases, Ductile fracture, Ferrites (Magnetic materials), Fracture (Materials), Fracture (Process), Fracture toughness

Proceedings Papers

Allowable Flaw Size of Japanese Cast Stainless Steel Pipe Using Probabilistic Fracture Mechanics Method

Shotaro Hayashi, Mayumi Ochi, Kiminobu Hojo, Takahisa Yamane, Wataru Nishi

Proc. ASME. PVP2017, Volume 1A: Codes and Standards, V01AT01A055, July 16–20, 2017

Paper No: PVP2017-65633

DOI: https://doi.org/10.1115/PVP2017-65633

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Topics: Fracture mechanics, Pipes, Stainless steel, Fitness-for-service, Japan Society of Mechanical Engineers, Nuclear power stations, Computational methods, Embrittlement, Ferrites (Magnetic materials), Mechanical properties

Journal Articles

Development of Inverse Analysis Method of Heat Conduction and Thermal Stress for Elbow—Part II

Kiminobu Hojo, Mayumi Ochi, Seiji Ioka, Shiro Kubo

J. Pressure Vessel Technol. October 2016, 138(5): 051207.

Paper No: PVT-15-1052

DOI: https://doi.org/10.1115/1.4032200

Published Online: May 4, 2016

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Topics: Finite element analysis, Heat conduction, Stress, Temperature, Thermal stresses, Fluids, Pipes, High temperature, Pressure, Thermal stratification

Journal Articles

Development of Inverse Analysis of Heat Conduction and Thermal Stress for Elbow (Part I)

Seiji Ioka, Shiro Kubo, Mayumi Ochi, Kiminobu Hojo

J. Pressure Vessel Technol. October 2016, 138(5): 051202.

Paper No: PVT-15-1051

DOI: https://doi.org/10.1115/1.4032815

Published Online: April 29, 2016

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Topics: Temperature, Heat conduction

Proceedings Papers

Flaw Acceptance Rule of J-Groove Weld of Bottom Mounted Instrumentation Nozzle

Kiminobu Hojo, Yasuto Nagoshi, Mayumi Ochi, Naoki Miura, Masayuki Kamaya, Takehiko Sera

Proc. ASME. PVP2014, Volume 1: Codes and Standards, V001T01A104, July 20–24, 2014

Paper No: PVP2014-28004

DOI: https://doi.org/10.1115/PVP2014-28004

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Topics: Instrumentation, Nozzles, Finite element analysis, Fracture (Materials), Nuclear power stations, Crack propagation, Fatigue, Fitness-for-service, Flaw detection, Geometry

Proceedings Papers

Development and Validation of Inverse Analysis of Heat Conduction and Thermal Stress for Elbow: Part II

Kiminobu Hojo, Mayumi Ochi, Seiji Ioka, Shiro Kubo

Proc. ASME. PVP2013, Volume 3: Design and Analysis, V003T03A040, July 14–18, 2013

Paper No: PVP2013-97620

DOI: https://doi.org/10.1115/PVP2013-97620

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Topics: Heat conduction, Thermal stresses, Temperature, Thermal stratification, Finite element analysis, Fluids, Pipes, Pressure, Stress, Stress concentration

Proceedings Papers

Development of Inverse Analysis of Heat Conduction and Thermal Stress for Elbow: Part I

Seiji Ioka, Shiro Kubo, Mayumi Ochi, Kiminobu Hojo

Proc. ASME. PVP2013, Volume 3: Design and Analysis, V003T03A045, July 14–18, 2013

Paper No: PVP2013-97883

DOI: https://doi.org/10.1115/PVP2013-97883

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Topics: Heat conduction, Thermal stresses, Temperature, Pipes, Databases, Stratified flow, Transfer functions, Engineering simulation, Fatigue, Fatigue damage

Proceedings Papers

Comparison Between Pressure Tests and Simulations for Thickness Management of Wall Thinning T-Joints

Kaina Teshima, Mayumi Ochi, Seiji Asada, Kiminobu Hojo, Takahiro Suzuki, Mitsuo Kugimoto

Proc. ASME. PVP2012, Volume 3: Design and Analysis, 131-137, July 15–19, 2012

Paper No: PVP2012-78686

DOI: https://doi.org/10.1115/PVP2012-78686

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Topics: Engineering simulation, Pressure, Simulation, Computer simulation, Design, Failure, Finite element analysis, Plant maintenance, Temperature, Tension

Proceedings Papers

Proposal of a Guideline for Thickness Management of Wall Thinning T-Joints

Mayumi Ochi, Katsuhiko Yamakami, Yoshinobu Hamaguchi, Katsumasa Miyazaki, Keita Naito, Kiyoo Toyota, Kaina Teshima

Proc. ASME. PVP2012, Volume 3: Design and Analysis, 157-166, July 15–19, 2012

Paper No: PVP2012-78790

DOI: https://doi.org/10.1115/PVP2012-78790

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Topics: Computer simulation, Construction, Design, Engineering standards, Japan Society of Mechanical Engineers, Maintenance, Nuclear power stations, Plant maintenance, Pressure, Temperature

Proceedings Papers

Fracture Evaluation Using Limit Analysis for Complex Structure (Pressure Load)

Kiminobu Hojo, Mayumi Ochi, Kazuo Ogawa, Naoki Ogawa

Proc. ASME. PVP2010, ASME 2010 Pressure Vessels and Piping Conference: Volume 1, 941-952, July 18–22, 2010

Paper No: PVP2010-26114

DOI: https://doi.org/10.1115/PVP2010-26114

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Topics: Fracture (Materials), Fracture (Process), Pressure, Stress, Pipes, Nozzles, Evaluation methods, Failure, Materials properties

Proceedings Papers

Simplified Stress Intensity Factor Equation for SCC Propagation in the Pipe Welds (Step 2)

Mayumi Ochi, Kiminobu Hojo, Kazuo Ogawa, Naoki Ogawa

Proc. ASME. PVP2009, Volume 3: Design and Analysis, 183-190, July 26–30, 2009

Paper No: PVP2009-78001

DOI: https://doi.org/10.1115/PVP2009-78001

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Topics: Pipes, Stress, Welded joints, Fracture (Materials), Finite element analysis, Nozzles, Shapes, Welding

Proceedings Papers

Propose of Simplified Stress Intensity Factor Equation for SCC Extension of the Pipe Welds

Mayumi Ochi, Kiminobu Hojo, Itaru Muroya, Kazuo Ogawa

Proc. ASME. PVP2008, Volume 3: Design and Analysis, 153-158, July 27–31, 2008

Paper No: PVP2008-61828

DOI: https://doi.org/10.1115/PVP2008-61828

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Topics: Pipes, Stress, Welded joints, Fracture (Materials), Alloys, Databases, Shapes, Alloy steel, American Petroleum Institute, Base metals

Proceedings Papers

Fatigue Crack Propagation Analysis of Nozzle Corner Using the Influence Function Method

Mayumi Ochi, Kiminobu Hojo, Takeharu Nagasaki

Proc. ASME. PVP2002, New and Emerging Computational Methods: Applications to Fracture, Damage, and Reliability, 193-199, August 5–9, 2002

Paper No: PVP2002-1208

DOI: https://doi.org/10.1115/PVP2002-1208

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Topics: Corners (Structural elements), Fatigue cracks, Nozzles, Stress

Proceedings Papers

Structural Evaluation for Repaired J-Weld Portion of Reactor Vessel Head Penetration

Seiji Asada, Kiminobu Hojo, Mayumi Ochi, Itaru Muroya, Hajime Ito

Proc. ASME. PVP2006-ICPVT-11, Volume 6: Materials and Fabrication, 35-41, July 23–27, 2006

Paper No: PVP2006-ICPVT-11-93200

DOI: https://doi.org/10.1115/PVP2006-ICPVT-11-93200

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Topics: Reactor vessels, Fitness-for-service, Fracture mechanics, Japan Society of Mechanical Engineers, Electricity (Physics), Fatigue cracks, Finite element analysis, Fracture (Materials), JSME Standards, Leakage

Journal citation

NARROW

Improvement of Target Flaw Sizes of CASS Pipe for PD Approval Using PFM Code Preface

Comparison of Prediction Models for Mechanical Properties of Thermally Aged Cast Austenitic Stainless Steels

Allowable Flaw Size of Japanese Cast Stainless Steel Pipe Using Probabilistic Fracture Mechanics Method

Development of Inverse Analysis Method of Heat Conduction and Thermal Stress for Elbow—Part II

Development of Inverse Analysis of Heat Conduction and Thermal Stress for Elbow (Part I)

Flaw Acceptance Rule of J-Groove Weld of Bottom Mounted Instrumentation Nozzle

Development and Validation of Inverse Analysis of Heat Conduction and Thermal Stress for Elbow: Part II

Development of Inverse Analysis of Heat Conduction and Thermal Stress for Elbow: Part I

Comparison Between Pressure Tests and Simulations for Thickness Management of Wall Thinning T-Joints

Proposal of a Guideline for Thickness Management of Wall Thinning T-Joints

Fracture Evaluation Using Limit Analysis for Complex Structure (Pressure Load)

Simplified Stress Intensity Factor Equation for SCC Propagation in the Pipe Welds (Step 2)

Propose of Simplified Stress Intensity Factor Equation for SCC Extension of the Pipe Welds

Fatigue Crack Propagation Analysis of Nozzle Corner Using the Influence Function Method

Structural Evaluation for Repaired J-Weld Portion of Reactor Vessel Head Penetration

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