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Proceedings Papers

Practical Procedure of Test Temperature Selection for Mini-C(T) Master Curve Evaluation

Masato Yamamoto, Seiji Sakuraya, Yuji Kitsunai, Mark Kirk
Proc. ASME. PVP2022, Volume 1: Codes and Standards, V001T01A025, July 17–22, 2022
Paper No: PVP2022-82754
DOI: https://doi.org/10.1115/PVP2022-82754
View Paper titled, Practical Procedure of Test Temperature Selection for Mini-C(T) Master Curve Evaluation
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Topics: Reactor vessels, Steel, Temperature, Testing, Low temperature, Plasticity, Surveillance, ASTM International, Fracture toughness, Reliability
Proceedings Papers

Obtaining Low-Cost Estimates of the Master Curve Index Temperature T 0 From Existing Information

Mark Kirk, Naoki Miura, Tomoki Skinko, Masato Yamamoto
Proc. ASME. PVP2022, Volume 1: Codes and Standards, V001T01A044, July 17–22, 2022
Paper No: PVP2022-83905
DOI: https://doi.org/10.1115/PVP2022-83905
View Paper titled, Obtaining Low-Cost Estimates of the Master Curve Index Temperature T 0 From Existing Information
Click here to open pdf in another window PDF for Obtaining Low-Cost Estimates of the Master Curve Index Temperature T 0 From Existing Information
Topics: Fracture toughness, Reactor vessels, Temperature, Testing, ASME Standards, Steel, Surveillance, Tension
Proceedings Papers

Master Curve Evaluation Using the Fracture Toughness Data at Low Test Temperature of T - T o <-50 °C

Masato Yamamoto, Mark Kirk, Tomoki Shinko
Proc. ASME. PVP2022, Volume 1: Codes and Standards, V001T01A049, July 17–22, 2022
Paper No: PVP2022-85289
DOI: https://doi.org/10.1115/PVP2022-85289
View Paper titled, Master Curve Evaluation Using the Fracture Toughness Data at Low Test Temperature of T - T o &lt;-50 °C
Click here to open pdf in another window PDF for Master Curve Evaluation Using the Fracture Toughness Data at Low Test Temperature of T - T o <-50 °C
Topics: Fracture toughness, Temperature
Proceedings Papers

Ductile Crack Growth Resistance and Rotation Behavior of Miniature C(T) Specimen

Tomoki Shinko, Masato Yamamoto
Proc. ASME. PVP2020, Volume 1: Codes and Standards, V001T01A037, August 3, 2020
Paper No: PVP2020-21104
DOI: https://doi.org/10.1115/PVP2020-21104
View Paper titled, Ductile Crack Growth Resistance and Rotation Behavior of Miniature C(T) Specimen
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Topics: Ductile fracture, Fracture toughness, Rotation, Steel, Fracture (Materials), Size effect, Temperature, Deformation, Ductile-brittle transition, Evaluation methods
Proceedings Papers

Assessment of the Continued Need for Independent Requirements on Transition Temperature and Upper Shelf Charpy Impact Toughness Metrics in Regulations Pertaining to Nuclear Reactor Pressure Vessels

Mark Kirk, Masato Yamamoto, Marjorie Erickson
Proc. ASME. PVP2020, Volume 1: Codes and Standards, V001T01A057, August 3, 2020
Paper No: PVP2020-21186
DOI: https://doi.org/10.1115/PVP2020-21186
View Paper titled, Assessment of the Continued Need for Independent Requirements on Transition Temperature and Upper Shelf Charpy Impact Toughness Metrics in Regulations Pertaining to Nuclear Reactor Pressure Vessels
Click here to open pdf in another window PDF for Assessment of the Continued Need for Independent Requirements on Transition Temperature and Upper Shelf Charpy Impact Toughness Metrics in Regulations Pertaining to Nuclear Reactor Pressure Vessels
Topics: Fracture toughness, Nuclear reactors, Phase transition temperature, Pressure vessels, Regulations, Steel, Nuclear power stations, Pressure
Proceedings Papers

PTS Evaluation Case Study Considering Actual Through-Wall Fracture Toughness Distribution

Masato Yamamoto, Masaki Nagai
Proc. ASME. PVP2019, Volume 1: Codes and Standards, V001T01A037, July 14–19, 2019
Paper No: PVP2019-93964
DOI: https://doi.org/10.1115/PVP2019-93964
View Paper titled, PTS Evaluation Case Study Considering Actual Through-Wall Fracture Toughness Distribution
Click here to open pdf in another window PDF for PTS Evaluation Case Study Considering Actual Through-Wall Fracture Toughness Distribution
Topics: Fracture toughness, Base metals, Fracture (Materials), Belts, Fluence (Radiation measurement), Fracture mechanics, Neutrons, Nuclear research, Probability, Surveillance
Proceedings Papers

Development of New Design Fatigue Curves in Japan: Discussion of Effect of Surface Finish on Fatigue Strength of Nuclear Component Materials

Motoki Nakane, Yun Wang, Hisamitsu Hatoh, Masato Yamamoto, Akihiko Hirano, Kentaro Hayashi
Proc. ASME. PVP2019, Volume 3: Design and Analysis, V003T03A044, July 14–19, 2019
Paper No: PVP2019-93167
DOI: https://doi.org/10.1115/PVP2019-93167
View Paper titled, Development of New Design Fatigue Curves in Japan: Discussion of Effect of Surface Finish on Fatigue Strength of Nuclear Component Materials
Click here to open pdf in another window PDF for Development of New Design Fatigue Curves in Japan: Discussion of Effect of Surface Finish on Fatigue Strength of Nuclear Component Materials
Topics: Design, Fatigue, Fatigue strength, Finishes, Fatigue testing, Surface roughness, Evaluation methods, Carbon steel, Databases, Machining
Proceedings Papers

Development of New Design Fatigue Curves in Japan: Discussion of Best-Fit Curves Based on Fatigue Test Data With Small-Scale Test Specimen

Yun Wang, Hisamitsu Hatoh, Masato Yamamoto, Motoki Nakane, Akihiko Hirano, Kentaro Hayashi
Proc. ASME. PVP2018, Volume 3B: Design and Analysis, V03BT03A001, July 15–20, 2018
Paper No: PVP2018-84052
DOI: https://doi.org/10.1115/PVP2018-84052
View Paper titled, Development of New Design Fatigue Curves in Japan: Discussion of Best-Fit Curves Based on Fatigue Test Data With Small-Scale Test Specimen
Click here to open pdf in another window PDF for Development of New Design Fatigue Curves in Japan: Discussion of Best-Fit Curves Based on Fatigue Test Data With Small-Scale Test Specimen
Topics: Design, Fatigue, Fatigue testing, Stress, Tensile strength, Alloys, Carbon steel, Fatigue life, Mechanical properties, Nuclear power stations
Proceedings Papers

Evaluation of Through Wall Fracture Toughness Distribution of IAEA Reference Material JRQ by Mini-C(T) Specimens and the Master Curve Method

Masato Yamamoto, Tomohiro Kobayashi
Proc. ASME. PVP2018, Volume 1A: Codes and Standards, V01AT01A071, July 15–20, 2018
Paper No: PVP2018-84889
DOI: https://doi.org/10.1115/PVP2018-84889
View Paper titled, Evaluation of Through Wall Fracture Toughness Distribution of IAEA Reference Material JRQ by Mini-C(T) Specimens and the Master Curve Method
Click here to open pdf in another window PDF for Evaluation of Through Wall Fracture Toughness Distribution of IAEA Reference Material JRQ by Mini-C(T) Specimens and the Master Curve Method
Topics: Fracture toughness, Temperature, Fluence (Radiation measurement), Fracture (Materials), Reactor vessels, Regulations, Stress, Thermal shock, Wall thickness
Proceedings Papers

Trial Study of the Master Curve Fracture Toughness Evaluation by Mini-C(T) Specimens for Low Upper Shelf Weld Metal Linde-80

Masato Yamamoto
Proc. ASME. PVP2018, Volume 1A: Codes and Standards, V01AT01A072, July 15–20, 2018
Paper No: PVP2018-84906
DOI: https://doi.org/10.1115/PVP2018-84906
View Paper titled, Trial Study of the Master Curve Fracture Toughness Evaluation by Mini-C(T) Specimens for Low Upper Shelf Weld Metal Linde-80
Click here to open pdf in another window PDF for Trial Study of the Master Curve Fracture Toughness Evaluation by Mini-C(T) Specimens for Low Upper Shelf Weld Metal Linde-80
Topics: Fracture toughness, Metals, Temperature, Ductile fracture, Electromagnetic scattering, Forging, Irradiation (Radiation exposure), Manufacturing, Reactor vessels, Steel
Proceedings Papers

Inter-Laboratory Results and Analyses of Mini-C(T) Specimen Testing of an Irradiated Linde 80 Weld Metal

William Server, Mikhail Sokolov, Masato Yamamoto, Robert Carter
Proc. ASME. PVP2018, Volume 1A: Codes and Standards, V01AT01A073, July 15–20, 2018
Paper No: PVP2018-84950
DOI: https://doi.org/10.1115/PVP2018-84950
View Paper titled, Inter-Laboratory Results and Analyses of Mini-C(T) Specimen Testing of an Irradiated Linde 80 Weld Metal
Click here to open pdf in another window PDF for Inter-Laboratory Results and Analyses of Mini-C(T) Specimen Testing of an Irradiated Linde 80 Weld Metal
Topics: Metals, Testing, Fracture toughness, ASTM International, Ductile fracture, Fracture (Materials), Fracture (Process), Low temperature, Reactor vessels, Temperature
Proceedings Papers

The Master Curve Fracture Toughness Evaluation of Irradiated Plate Material JRQ Using Miniature-C(T) Specimens

Masato Yamamoto
Proc. ASME. PVP2017, Volume 1A: Codes and Standards, V01AT01A071, July 16–20, 2017
Paper No: PVP2017-66085
DOI: https://doi.org/10.1115/PVP2017-66085
View Paper titled, The Master Curve Fracture Toughness Evaluation of Irradiated Plate Material JRQ Using Miniature-C(T) Specimens
Click here to open pdf in another window PDF for The Master Curve Fracture Toughness Evaluation of Irradiated Plate Material JRQ Using Miniature-C(T) Specimens
Topics: Fracture toughness, Steel, Base metals, Cracking (Materials), Dimensions, Fluence (Radiation measurement), Fracture (Process), Machining, Neutrons, Reactor vessels
Proceedings Papers

Location of Initiation Sites in Fracture Toughness Testing Specimens: The Effect of Size and Side Grooves

Kim Wallin, Masato Yamamoto, Ulla Ehrnstén
Proc. ASME. PVP2016, Volume 1B: Codes and Standards, V01BT01A011, July 17–21, 2016
Paper No: PVP2016-63078
DOI: https://doi.org/10.1115/PVP2016-63078
View Paper titled, Location of Initiation Sites in Fracture Toughness Testing Specimens: The Effect of Size and Side Grooves
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Topics: Fracture toughness, Testing, Fracture (Materials), Stress, Fatigue cracks, Finite element analysis, Geometry
Proceedings Papers

Applicability of Miniature-C(T) Specimen for the Master Curve Evaluation of RPV Weld Metal and Heat Affected Zone

Masato Yamamoto, Naoki Miura
Proc. ASME. PVP2016, Volume 1B: Codes and Standards, V01BT01A016, July 17–21, 2016
Paper No: PVP2016-63762
DOI: https://doi.org/10.1115/PVP2016-63762
View Paper titled, Applicability of Miniature-C(T) Specimen for the Master Curve Evaluation of RPV Weld Metal and Heat Affected Zone
Click here to open pdf in another window PDF for Applicability of Miniature-C(T) Specimen for the Master Curve Evaluation of RPV Weld Metal and Heat Affected Zone
Topics: Heat, Metals, Fracture toughness, Base metals, Steel, Fracture (Materials), Surveillance, Dimensions, Size effect, Statistics
Journal Articles

Study on Dimensional Tolerances Required for Miniature C(T) Specimens

Naoki Miura, Yasunori Momoi, Masato Yamamoto
Journal: Journal of Pressure Vessel Technology
Article Type: Research-Article
J. Pressure Vessel Technol. April 2017, 139(2): 021207.
Paper No: PVT-16-1024
DOI: https://doi.org/10.1115/1.4034583
Published Online: September 28, 2016
View Article titled, Study on Dimensional Tolerances Required for Miniature C(T) Specimens
Click here to open pdf in another window PDF for Study on Dimensional Tolerances Required for Miniature C(T) Specimens
Topics: Dimensions, Stress, ASTM International, Finite element analysis, Fracture (Materials), Temperature, Fracture toughness
Proceedings Papers

Study on Dimensional Tolerances Required for Miniature C(T) Specimens

Naoki Miura, Yasunori Momoi, Masato Yamamoto
Proc. ASME. PVP2015, Volume 1A: Codes and Standards, V01AT01A061, July 19–23, 2015
Paper No: PVP2015-45503
DOI: https://doi.org/10.1115/PVP2015-45503
View Paper titled, Study on Dimensional Tolerances Required for Miniature C(T) Specimens
Click here to open pdf in another window PDF for Study on Dimensional Tolerances Required for Miniature C(T) Specimens
Topics: ASTM International, Dimensions, Embrittlement, Finite element analysis, Fracture toughness, Irradiation (Radiation exposure), Neutrons, Reactor vessels, Steel, Stress
Proceedings Papers

Applicability of Miniature C(T) Specimens for the Master Curve Evaluation of RPV Weld Metal

Masato Yamamoto, Naoki Miura
Proc. ASME. PVP2015, Volume 1A: Codes and Standards, V01AT01A064, July 19–23, 2015
Paper No: PVP2015-45545
DOI: https://doi.org/10.1115/PVP2015-45545
View Paper titled, Applicability of Miniature C(T) Specimens for the Master Curve Evaluation of RPV Weld Metal
Click here to open pdf in another window PDF for Applicability of Miniature C(T) Specimens for the Master Curve Evaluation of RPV Weld Metal
Topics: Metals, Fracture toughness, Steel, Base metals, Fracture (Materials), Fracture (Process), Surveillance, Temperature, Dimensions, Reactor vessels
Proceedings Papers

Relation Between Front-Face and Load-Line Displacements on a C(T) Specimen by Elastic-Plastic Analysis

Naoki Miura, Yasunori Momoi, Masato Yamamoto
Proc. ASME. PVP2015, Volume 1B: Codes and Standards, V01BT01A056, July 19–23, 2015
Paper No: PVP2015-45499
DOI: https://doi.org/10.1115/PVP2015-45499
View Paper titled, Relation Between Front-Face and Load-Line Displacements on a C(T) Specimen by Elastic-Plastic Analysis
Click here to open pdf in another window PDF for Relation Between Front-Face and Load-Line Displacements on a C(T) Specimen by Elastic-Plastic Analysis
Topics: Stress, Displacement, Gages, Blades, Deformation, Displacement measurement, Embrittlement, Finite element analysis, Fracture toughness, Irradiation (Radiation exposure)
Proceedings Papers

Effect of Aging Temperature on Fracture Toughness of Cast Austenitic Stainless Steel

Yasufumi Miura, Masato Yamamoto
Proc. ASME. PVP2015, Volume 1B: Codes and Standards, V01BT01A010, July 19–23, 2015
Paper No: PVP2015-45434
DOI: https://doi.org/10.1115/PVP2015-45434
View Paper titled, Effect of Aging Temperature on Fracture Toughness of Cast Austenitic Stainless Steel
Click here to open pdf in another window PDF for Effect of Aging Temperature on Fracture Toughness of Cast Austenitic Stainless Steel
Topics: Fracture toughness, Stainless steel, Temperature, Embrittlement, Notch testing, Testing equipment
Proceedings Papers

A Round Robin Program of Master Curve Evaluation Using Miniature C(T) Specimens: 3rd Report — Comparison of T 0 Under Various Selections of Temperature Conditions

Masato Yamamoto, Akihiko Kimura, Kunio Onizawa, Kentaro Yoshimoto, Takuya Ogawa, Yasuhiro Mabuchi, Hans-Werner Viehrig, Naoki Miura, Naoki Soneda
Proc. ASME. PVP2014, Volume 1: Codes and Standards, V001T01A098, July 20–24, 2014
Paper No: PVP2014-28898
DOI: https://doi.org/10.1115/PVP2014-28898
View Paper titled, A Round Robin Program of Master Curve Evaluation Using Miniature C(T) Specimens: 3rd Report — Comparison of T 0 Under Various Selections of Temperature Conditions
Click here to open pdf in another window PDF for A Round Robin Program of Master Curve Evaluation Using Miniature C(T) Specimens: 3rd Report — Comparison of T 0 Under Various Selections of Temperature Conditions
Topics: Temperature, Fracture toughness, Testing, Electromagnetic scattering, Machinery, Steel, Surveillance, ASTM International, Dimensions, Reliability