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Proceedings Papers

Assessment of Residual Stress for Thick Butt-Welded Plate of a Reactor Pressure Vessel Steel

Yoosung Ha, Shigetaka Okano, Hisashi Takamizawa, Jinya Katsuyama, Masahito Mochizuki

Proc. ASME. PVP2021, Volume 4: Materials and Fabrication, V004T06A067, July 13–15, 2021

Paper No: PVP2021-61897

DOI: https://doi.org/10.1115/PVP2021-61897

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Topics: Drilling, Finite element analysis, Reactor vessels, Steel, Stress

Journal Articles

Estimation of Stress Corrosion Cracking Growth Behavior Under Weld Residual Stress in the Bottom of a Reactor Pressure Vessel by Finite Element Analysis

Fuminori Iwamatsu, Katsumasa Miyazaki, Masahito Mochizuki

J. Pressure Vessel Technol. August 2015, 137(4): 041402.

Paper No: PVT-13-1073

DOI: https://doi.org/10.1115/1.4029256

Published Online: August 1, 2015

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Topics: Finite element analysis, Fracture (Materials), Stress, Shapes, Stress concentration

Proceedings Papers

Effect of Seal Welding Conditions on Residual Stress Field and Fracture Mechanics Parameter Around Remaining Crack

Masahito Mochizuki, Shigetaka Okano, Keisuke Torigata

Proc. ASME. PVP2013, Volume 6A: Materials and Fabrication, V06AT06A022, July 14–18, 2013

Paper No: PVP2013-98069

DOI: https://doi.org/10.1115/PVP2013-98069

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Topics: Fracture (Materials), Fracture mechanics, Stress, Welding, Heat, Welded joints, Finite element analysis, Heat conduction, Reliability, Temperature distribution

Proceedings Papers

Probabilistic Study of SCC Initiation Stage Based on Statistical Analysis in 316L Austenitic Stainless Steel

Ryohei Ihara, Masahito Mochizuki, Shinji Fujimoto

Proc. ASME. PVP2013, Volume 6A: Materials and Fabrication, V06AT06A024, July 14–18, 2013

Paper No: PVP2013-98155

DOI: https://doi.org/10.1115/PVP2013-98155

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Topics: Stainless steel, Statistical analysis, Fracture (Materials), Density, Probability, Boiling water reactors, Microcracks, Nuclear power stations, Corrosion, Metals

Proceedings Papers

SCC Assessment Based on Probability Fracture Mechanics Considering SCC Initiation and Propagation Under Residual Stress Fields Generated by Machining and Welding Process of Pipes

Masahito Mochizuki, Ryohei Ihara, Jinya Katsuyama, Makoto Udagawa

Proc. ASME. PVP2013, Volume 6A: Materials and Fabrication, V06AT06A025, July 14–18, 2013

Paper No: PVP2013-98156

DOI: https://doi.org/10.1115/PVP2013-98156

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Topics: Fracture mechanics, Machining, Pipes, Probability, Stress, Welding, Butt welding, Stress concentration, Fracture (Materials), Finite element methods

Proceedings Papers

Mitigation of Welding-Induced Tensile Residual Stress at Surface of Heavy Section Plate by In-Process Control Welding With Trailing Heat Sink

Shigetaka Okano, Masahito Mochizuki

Proc. ASME. PVP2013, Volume 6B: Materials and Fabrication, V06BT06A090, July 14–18, 2013

Paper No: PVP2013-98071

DOI: https://doi.org/10.1115/PVP2013-98071

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Topics: Heat sinks, Stress, Welding, Simulation results, Carbon, Finite element analysis, Stainless steel, Temperature, X-rays

Proceedings Papers

Effect of Weld HAZ Mis-Matching on Joint Performances in High Chromium Steel Welded Joint

Masahito Mochizuki

Proc. ASME. ICONE20-POWER2012, Volume 1: Plant Operations, Maintenance, Engineering, Modifications, Life Cycle, and Balance of Plant; Component Reliability and Materials Issues; Steam Generator Technology Applications and Innovations; Advanced Reactors and Near-Term Deployment; Reactor Physics, Neutronics, and Transport Theory; Nuclear Education, Human Resources, and Public Acceptance, 457-466, July 30–August 3, 2012

Paper No: ICONE20-POWER2012-54699

DOI: https://doi.org/10.1115/ICONE20-POWER2012-54699

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Topics: Steel, Welded joints, Tensile strength, Piping systems, Stainless steel, Welding, Base metals, Breeder reactors, Coolants, Design

Proceedings Papers

Improvement of Residual Stress Determination by Deep Hole Drilling Considering Plastic Deformation

Masahito Mochizuki, Houichi Kitano, Shigetaka Okano

Proc. ASME. PVP2012, Volume 6: Materials and Fabrication, Parts A and B, 1281-1285, July 15–19, 2012

Paper No: PVP2012-78812

DOI: https://doi.org/10.1115/PVP2012-78812

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Topics: Deformation, Drilling, Stress, Residual stresses, Finite element analysis

Proceedings Papers

Estimation of SCC Crack Growth Behavior Under Weld Residual Stress in the Bottom of a Reactor Pressure Vessel by Finite Element Analysis

Fuminori Iwamatsu, Katsumasa Miyazaki, Masahito Mochizuki

Proc. ASME. PVP2012, Volume 6: Materials and Fabrication, Parts A and B, 703-709, July 15–19, 2012

Paper No: PVP2012-78471

DOI: https://doi.org/10.1115/PVP2012-78471

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Topics: Finite element analysis, Fracture (Materials), Reactor vessels, Stress, Shapes, Modeling, Crack propagation, Metals, Stress concentration, Stress corrosion cracking

Proceedings Papers

Effect of Undermatched Weld on Deformation and Brittle Fracture Behaviors in High-Tensile Strength Steel Plate Welded Joint

Masahito Mochizuki, Tomoya Kawabata

Proc. ASME. PVP2012, Volume 6: Materials and Fabrication, Parts A and B, 145-154, July 15–19, 2012

Paper No: PVP2012-78813

DOI: https://doi.org/10.1115/PVP2012-78813

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Topics: Brittle fracture, Deformation, Steel, Welded joints, Welding, Phase transitions, Cooling, Hydroelectric power stations, Stress, Temperature

Journal Articles

Long-Term Stability of Residual Stress Improvement by Water Jet Peening Considering Working Processes

Tadafumi Hashimoto, Yusuke Osawa, Shinsuke Itoh, Masahito Mochizuki, Kazutoshi Nishimoto

J. Pressure Vessel Technol. June 2013, 135(3): 031601.

Paper No: PVT-11-1188

DOI: https://doi.org/10.1115/1.4023417

Published Online: May 21, 2013

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Topics: Stress, Stability, Water, Creep, Relaxation (Physics), X-rays, Shot peening

Proceedings Papers

Residual Stress by X-Ray Diffraction and Microstructure for Multi-Pass Girth Welded Pipe Joint in Austenitic Stainless Steel Type 316L

Tadafumi Hashimoto, Shigetaka Okano, Shinro Hirano, Masahito Mochizuki, Kazutoshi Nishimoto

Proc. ASME. PVP2011, Volume 6: Materials and Fabrication, Parts A and B, 1479-1488, July 17–21, 2011

Paper No: PVP2011-57434

DOI: https://doi.org/10.1115/PVP2011-57434

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Topics: Pipe joints, Stainless steel, Stress, X-ray diffraction, Welding, Ferrites (Magnetic materials), Brittle fracture, Crack propagation, Cycles, Fatigue failure

Proceedings Papers

Long Term Stability of Compressive Residual Stress Introduced in Alloy 600 by Water Jet Peening Under Elevated Temperature Environment

Tadafumi Hashimoto, Yusuke Osawa, Masashi Kameyama, Shinro Hirano, Naoki Chigusa, Kazuyoshi Saida, Masahito Mochizuki, Kazutoshi Nishimoto

Proc. ASME. PVP2011, Volume 6: Materials and Fabrication, Parts A and B, 605-612, July 17–21, 2011

Paper No: PVP2011-57091

DOI: https://doi.org/10.1115/PVP2011-57091

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Topics: Indium alloys, Shot peening, Stability, Stress, Temperature, Water, Pressurized water reactors, Deformation, Machining, Relaxation (Physics)

Proceedings Papers

Deformation State Evaluation Around Deep Drilled Hole After Three-Dimensional Stress Release

Houichi Kitano, Shigetaka Okano, Masahito Mochizuki

Proc. ASME. PVP2011, Volume 6: Materials and Fabrication, Parts A and B, 1429-1436, July 17–21, 2011

Paper No: PVP2011-57193

DOI: https://doi.org/10.1115/PVP2011-57193

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Topics: Deformation, Stress, Residual stresses, Shear stress, Cutting, Drilling, Numerical analysis, Theoretical methods

Journal Articles

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

Masahito Mochizuki, Masao Toyoda

J. Pressure Vessel Technol. June 2011, 133(3): 031401.

DOI: https://doi.org/10.1115/1.4002670

Published Online: March 29, 2011

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Topics: Brittle fracture, Brittleness, Deformation, Ductile fracture, Dynamic testing (Materials), Fracture (Materials), Fracture (Process), Fracture toughness, Numerical analysis, Stress

Journal Articles

The Effects of Residual Stress Distribution and Component Geometry on the Stress Intensity Factor of Surface Cracks

Katsumasa Miyazaki, Masahito Mochizuki

J. Pressure Vessel Technol. February 2011, 133(1): 011701.

DOI: https://doi.org/10.1115/1.4002671

Published Online: January 20, 2011

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Topics: Fracture (Materials), Stress, Surface cracks, Geometry, Pipes, Tension, Compression

Proceedings Papers

Prediction of SCC Initiation in Weld Components by Multi-Scale Analysis Incorporating Crystal Plasticity

Masahito Mochizuki, Yoshiki Mikami

Proc. ASME. PVP2010, ASME 2010 Pressure Vessels and Piping Conference: Volume 6, Parts A and B, 189-195, July 18–22, 2010

Paper No: PVP2010-25899

DOI: https://doi.org/10.1115/PVP2010-25899

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Topics: Crystals, Plasticity, Stress, Stress concentration, Crystal structure, Fracture (Materials), Grain boundaries, Stress corrosion cracking, Temperature, Alloys

Proceedings Papers

Diagnostics of Nuclear Power Plant Components Due to Thickness Measurement by Using Digital Radiography

Masahito Mochizuki, Satoshi Kanno, Shunichi Shimizu, Yuichi Daitou

Proc. ASME. PVP2010, ASME 2010 Pressure Vessels and Piping Conference: Volume 1, 999-1006, July 18–22, 2010

Paper No: PVP2010-25999

DOI: https://doi.org/10.1115/PVP2010-25999

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Topics: Nuclear power stations, Thickness measurement, Imaging, Power stations

Proceedings Papers

Coupling Computation Between Weld Mechanics and Arc Plasma Processes

Masahito Mochizuki, Shigetaka Okano

Proc. ASME. PVP2010, ASME 2010 Pressure Vessels and Piping Conference: Volume 6, Parts A and B, 1449-1460, July 18–22, 2010

Paper No: PVP2010-25901

DOI: https://doi.org/10.1115/PVP2010-25901

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Topics: Computation, Electric arcs, Temperature distribution, Welding, Deformation, Heat transfer, Modeling, Numerical analysis, Simulation, Stress analysis (Engineering)

Proceedings Papers

Million-Finite-Element-Order Large-Scale Computation of Residual Stress in Complicated Weld Structures

Masahito Mochizuki, Shinsuke Itoh

Proc. ASME. PVP2010, ASME 2010 Pressure Vessels and Piping Conference: Volume 6, Parts A and B, 1461-1468, July 18–22, 2010

Paper No: PVP2010-25902

DOI: https://doi.org/10.1115/PVP2010-25902

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Topics: Computation, Stress, Deformation, Welding, Pipes, Algorithms, Computational methods, Steam, Welded joints

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Journal citation

NARROW

Assessment of Residual Stress for Thick Butt-Welded Plate of a Reactor Pressure Vessel Steel

Estimation of Stress Corrosion Cracking Growth Behavior Under Weld Residual Stress in the Bottom of a Reactor Pressure Vessel by Finite Element Analysis

Effect of Seal Welding Conditions on Residual Stress Field and Fracture Mechanics Parameter Around Remaining Crack

Probabilistic Study of SCC Initiation Stage Based on Statistical Analysis in 316L Austenitic Stainless Steel

SCC Assessment Based on Probability Fracture Mechanics Considering SCC Initiation and Propagation Under Residual Stress Fields Generated by Machining and Welding Process of Pipes

Mitigation of Welding-Induced Tensile Residual Stress at Surface of Heavy Section Plate by In-Process Control Welding With Trailing Heat Sink

Effect of Weld HAZ Mis-Matching on Joint Performances in High Chromium Steel Welded Joint

Improvement of Residual Stress Determination by Deep Hole Drilling Considering Plastic Deformation

Estimation of SCC Crack Growth Behavior Under Weld Residual Stress in the Bottom of a Reactor Pressure Vessel by Finite Element Analysis

Effect of Undermatched Weld on Deformation and Brittle Fracture Behaviors in High-Tensile Strength Steel Plate Welded Joint

Long-Term Stability of Residual Stress Improvement by Water Jet Peening Considering Working Processes

Residual Stress by X-Ray Diffraction and Microstructure for Multi-Pass Girth Welded Pipe Joint in Austenitic Stainless Steel Type 316L

Long Term Stability of Compressive Residual Stress Introduced in Alloy 600 by Water Jet Peening Under Elevated Temperature Environment

Deformation State Evaluation Around Deep Drilled Hole After Three-Dimensional Stress Release

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

The Effects of Residual Stress Distribution and Component Geometry on the Stress Intensity Factor of Surface Cracks

Prediction of SCC Initiation in Weld Components by Multi-Scale Analysis Incorporating Crystal Plasticity

Diagnostics of Nuclear Power Plant Components Due to Thickness Measurement by Using Digital Radiography

Coupling Computation Between Weld Mechanics and Arc Plasma Processes

Million-Finite-Element-Order Large-Scale Computation of Residual Stress in Complicated Weld Structures

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