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Journal Articles

Research and Development of Rubber Bearings for Sodium-Cooled Fast Reactor: Ultimate Properties of Half-Scale Thick Rubber Bearings Based on Breaking Tests

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Tsuyoshi Fukasawa, Shigeki Okamura, Tomohiko Yamamoto, Nobuchika Kawasaki, Tsutomu Hirotani, Eriko Moriizumi, Yu Sakurai, Nobuo Masaki
Journal: Journal of Pressure Vessel Technology
Publisher: ASME
Article Type: Research-Article
J. Pressure Vessel Technol. February 2018, 140(1): 011401.
Paper No: PVT-16-1160
https://doi.org/10.1115/1.4038435
Published Online: November 30, 2017
View Articletitled, Research and Development of Rubber Bearings for Sodium-Cooled Fast Reactor: Ultimate Properties of Half-Scale Thick Rubber Bearings Based on Breaking Tests
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Topics: Bearings, Design, Rubber, Shear (Mechanics), Stiffness, Stress, Hardening, Sodium fast reactors, Compressive stress
Proceedings Papers

Development of Seismic Isolation Systems for Sodium-Cooled Fast Reactors in Japan

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Nobuchika Kawasaki, Tomoyoshi Watakabe, Takashi Wakai, Tomohiko Yamamoto, Tsuyoshi Fukasawa, Shigeki Okamura
Proc. ASME. PVP2016, Volume 8: Seismic Engineering, V008T08A037, July 17–21, 2016
Publisher: American Society of Mechanical Engineers
Paper No: PVP2016-63437
https://doi.org/10.1115/PVP2016-63437
View Paper titled, Development of Seismic Isolation Systems for Sodium-Cooled Fast Reactors in Japan
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Topics: Sodium fast reactors, Springs, Dampers, Design, Disks, Bearings, Buckling, Damping, Diluents, Earthquake resistant design
Proceedings Papers

Development on Rubber Bearings for Sodium-Cooled Fast Reactor: Part 3 — Ultimate Properties of a Half Scale Thick Rubber Bearings Based on Breaking Test

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Tsuyoshi Fukasawa, Shigeki Okamura, Tomohiko Yamamoto, Nobuchika Kawasaki, Tsutomu Hirotani, Eriko Moriizumi, Yu Sakurai, Nobuo Masaki
Proc. ASME. PVP2016, Volume 8: Seismic Engineering, V008T08A035, July 17–21, 2016
Publisher: American Society of Mechanical Engineers
Paper No: PVP2016-63397
https://doi.org/10.1115/PVP2016-63397
View Paper titled, Development on Rubber Bearings for Sodium-Cooled Fast Reactor: Part 3 — Ultimate Properties of a Half Scale Thick Rubber Bearings Based on Breaking Test
Open the PDF for Development on Rubber Bearings for Sodium-Cooled Fast Reactor: Part 3 — Ultimate Properties of a Half Scale Thick Rubber Bearings Based on Breaking Test in another window
Topics: Bearings, Rubber, Sodium fast reactors, Stress, Damping, Knudsen number, Nuclear power stations, Probabilistic risk assessment, Safety, Stiffness
Proceedings Papers

Parametric Design Study About Seismic Isolation System for Fast Reactor JSFR

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Nobuchika Kawasaki, Tomohiko Yamamoto, Tsuyoshi Fukasawa, Shigeki Okamura
Proc. ASME. PVP2015, Volume 8: Seismic Engineering, V008T08A038, July 19–23, 2015
Publisher: American Society of Mechanical Engineers
Paper No: PVP2015-45165
https://doi.org/10.1115/PVP2015-45165
View Paper titled, Parametric Design Study About Seismic Isolation System for Fast Reactor JSFR
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Topics: Buckling, Earthquake resistant design, Fast neutron reactors, Parametric design, Reactor vessels, Stress, Vessels
Proceedings Papers

Development on Rubber Bearings for Sodium-Cooled Fast Reactor: Part 1 — Examination Plan

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Tomohiko Yamamoto, Nobuchika Kawasaki, Tsuyoshi Fukasawa, Shigeki Okamura, Takahiro Somaki, Yusuke Samejima, Nobuo Masaki
Proc. ASME. PVP2015, Volume 8: Seismic Engineering, V008T08A039, July 19–23, 2015
Publisher: American Society of Mechanical Engineers
Paper No: PVP2015-45249
https://doi.org/10.1115/PVP2015-45249
View Paper titled, Development on Rubber Bearings for Sodium-Cooled Fast Reactor: Part 1 — Examination Plan
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Topics: Bearings, Rubber, Sodium fast reactors, Mechanical properties, Creep, Design, Shear (Mechanics), Shear modulus, Stress
Proceedings Papers

Development on Rubber Bearings for Sodium-Cooled Fast Reactor: Part 2 — Fundamental Characteristics of Half-Scale Rubber Bearings Based on Static Test

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Tsuyoshi Fukasawa, Shigeki Okamura, Tomohiko Yamamoto, Nobuchika Kawasaki, Takahiro Somaki, Yu Sakurai, Nobuo Masaki
Proc. ASME. PVP2015, Volume 8: Seismic Engineering, V008T08A040, July 19–23, 2015
Publisher: American Society of Mechanical Engineers
Paper No: PVP2015-45263
https://doi.org/10.1115/PVP2015-45263
View Paper titled, Development on Rubber Bearings for Sodium-Cooled Fast Reactor: Part 2 — Fundamental Characteristics of Half-Scale Rubber Bearings Based on Static Test
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Topics: Bearings, Rubber, Sodium fast reactors, Design, Damping, Displacement, Knudsen number, Safety, Stiffness, Stress
Journal Articles

Comparison and Assessment of the Creep-Fatigue Evaluation Methods With Notched Specimen Made of Mod.9Cr-1Mo Steel

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Masanori Ando, Yuichi Hirose, Takanori Karato, Sota Watanabe, Osamu Inoue, Nobuchika Kawasaki, Yasuhiro Enuma
Journal: Journal of Pressure Vessel Technology
Publisher: ASME
Article Type: Research-Article
J. Pressure Vessel Technol. August 2014, 136(4): 041406.
Paper No: PVT-12-1178
https://doi.org/10.1115/1.4026852
Published Online: April 16, 2014
View Articletitled, Comparison and Assessment of the Creep-Fatigue Evaluation Methods With Notched Specimen Made of Mod.9Cr-1Mo Steel
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Topics: Creep, Fatigue, Stress
Journal Articles

Stress Mitigation Design of a Tubesheet by Considering the Thermal Stress Inducement Mechanism

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Masanori Ando, Hideki Takasho, Nobuchika Kawasaki, Naoto Kasahara
Journal: Journal of Pressure Vessel Technology
Publisher: ASME
Article Type: Research-Article
J. Pressure Vessel Technol. December 2013, 135(6): 061207.
Paper No: PVT-12-1162
https://doi.org/10.1115/1.4024618
Published Online: October 7, 2013
View Articletitled, Stress Mitigation Design of a Tubesheet by Considering the Thermal Stress Inducement Mechanism
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Topics: Design, Stress, Thermal stresses, Stress concentration, Transients (Dynamics), Temperature
Journal Articles

Verification of the Estimation Methods of Strain Range in Notched Specimens Made of Mod.9Cr-1Mo Steel

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Masanori Ando, Yuichi Hirose, Shingo Date, Sota Watanabe, Yasuhiro Enuma, Nobuchika Kawasaki
Journal: Journal of Pressure Vessel Technology
Publisher: ASME
Article Type: Research-Article
J. Pressure Vessel Technol. December 2012, 134(6): 061403.
https://doi.org/10.1115/1.4006902
Published Online: October 18, 2012
View Articletitled, Verification of the Estimation Methods of Strain Range in Notched Specimens Made of Mod.9Cr-1Mo Steel
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Topics: Cycles, Fatigue, Fatigue testing, Finite element analysis, Japan Society of Mechanical Engineers, Stress, Failure, Fracture (Materials), Steel, Design
Proceedings Papers

The Creep-Fatigue Evaluation Method for Intermediate Hold Conditions: Proposal and Validation

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Satoshi Okajima, Nobuchika Kawasaki, Shoichi Kato, Naoto Kasahara
Proc. ASME. PVP2011, Volume 1: Codes and Standards, 365-372, July 17–21, 2011
Publisher: American Society of Mechanical Engineers
Paper No: PVP2011-57285
https://doi.org/10.1115/PVP2011-57285
View Paper titled, The Creep-Fatigue Evaluation Method for Intermediate Hold Conditions: Proposal and Validation
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Topics: Creep, Evaluation methods, Fatigue, Damage, Stress, Fracture (Materials), Reactor vessels, Sodium, Relaxation (Physics), Temperature gradient
Proceedings Papers

An Evaluation Method for Plastic Buckling of Cantilever Type Pipes Controlled by Displacement Loads: Part 1—Proposal of the Estimation Method and the Criterion

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Masanori Ando, Taiji Tezuka, Toshio Nakamura, Tomohiro Okawa, Yasuhiro Enuma, Nobuchika Kawasaki, Kazuyuki Tsukimori
Proc. ASME. PVP2011, Volume 3: Design and Analysis, 233-241, July 17–21, 2011
Publisher: American Society of Mechanical Engineers
Paper No: PVP2011-57544
https://doi.org/10.1115/PVP2011-57544
View Paper titled, An Evaluation Method for Plastic Buckling of Cantilever Type Pipes Controlled by Displacement Loads: Part 1—Proposal of the Estimation Method and the Criterion
Open the PDF for An Evaluation Method for Plastic Buckling of Cantilever Type Pipes Controlled by Displacement Loads: Part 1—Proposal of the Estimation Method and the Criterion in another window
Topics: Buckling, Cantilevers, Displacement, Evaluation methods, Pipes, Stress, Finite element analysis, Materials properties, Steel, Work hardening
Proceedings Papers

An Evaluation Method for Plastic Buckling of Cantilever Type Pipes Controlled by Displacement Loads: Part 2—Verification of Proposal Method by Buckling Test

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Masanori Ando, Taiji Tezuka, Toshio Nakamura, Tomohiro Okawa, Yasuhiro Enuma, Nobuchika Kawasaki, Kazuyuki Tsukimori
Proc. ASME. PVP2011, Volume 3: Design and Analysis, 243-250, July 17–21, 2011
Publisher: American Society of Mechanical Engineers
Paper No: PVP2011-57548
https://doi.org/10.1115/PVP2011-57548
View Paper titled, An Evaluation Method for Plastic Buckling of Cantilever Type Pipes Controlled by Displacement Loads: Part 2—Verification of Proposal Method by Buckling Test
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Topics: Buckling, Cantilevers, Displacement, Evaluation methods, Pipes, Stress, Finite element analysis, Breeder reactors, Deformation, Design
Proceedings Papers

Comparison of Creep-Fatigue Evaluation Methods With Notched Specimens Made of Mod.9Cr-1Mo Steel

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Masanori Ando, Yuichi Hirose, Takanori Karato, Sota Watanabe, Osamu Inoue, Nobuchika Kawasaki, Yasuhiro Enuma
Proc. ASME. PVP2011, Volume 6: Materials and Fabrication, Parts A and B, 177-187, July 17–21, 2011
Publisher: American Society of Mechanical Engineers
Paper No: PVP2011-57532
https://doi.org/10.1115/PVP2011-57532
View Paper titled, Comparison of Creep-Fatigue Evaluation Methods With Notched Specimens Made of Mod.9Cr-1Mo Steel
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Topics: Creep, Evaluation methods, Fatigue, Steel, Finite element analysis, Japan Society of Mechanical Engineers, Stress, Cycles, Design, Electromagnetic induction
Journal Articles

Crack Initiation Process for Semicircular Notched Plate in Fatigue Test at Elevated Temperature

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Bopit Bubphachot, Osamu Watanabe, Nobuchika Kawasaki, Naoto Kasahara
Journal: Journal of Pressure Vessel Technology
Publisher: ASME
Article Type: Research Papers
J. Pressure Vessel Technol. June 2011, 133(3): 031403.
https://doi.org/10.1115/1.4002539
Published Online: April 4, 2011
View Articletitled, Crack Initiation Process for Semicircular Notched Plate in Fatigue Test at Elevated Temperature
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Topics: Cycles, Fatigue testing, Fracture (Materials), Stress, Temperature
Proceedings Papers

Proposals of Guidelines for High Temperature Structural Design of Fast Reactor Vessels

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Naoto Kasahara, Kenichiro Satoh, Kazuyuki Tsukimori, Nobuchika Kawasaki
Proc. ASME. PVP2010, ASME 2010 Pressure Vessels and Piping Conference: Volume 1, 315-322, July 18–22, 2010
Publisher: American Society of Mechanical Engineers
Paper No: PVP2010-25414
https://doi.org/10.1115/PVP2010-25414
View Paper titled, Proposals of Guidelines for High Temperature Structural Design of Fast Reactor Vessels
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Topics: Fast neutron reactors, High temperature, Structural design, Vessels, Design, Creep, Reactor vessels, Stress, Fatigue, Modeling
Proceedings Papers

Verification of the Prediction Methods of Strain Range in Notched Specimens Made of Mod.9Cr-1Mo

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Masanori Ando, Yuichi Hirose, Shingo Date, Sota Watanabe, Yasuhiro Enuma, Nobuchika Kawasaki
Proc. ASME. PVP2010, ASME 2010 Pressure Vessels and Piping Conference: Volume 1, 323-334, July 18–22, 2010
Publisher: American Society of Mechanical Engineers
Paper No: PVP2010-25489
https://doi.org/10.1115/PVP2010-25489
View Paper titled, Verification of the Prediction Methods of Strain Range in Notched Specimens Made of Mod.9Cr-1Mo
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Topics: Creep, Damage, Deformation, Design, Electromagnetic induction, Fatigue, Fatigue life, Fatigue testing, Finite element analysis, Fracture (Materials)
Proceedings Papers

A Comparative Study of Negligible Creep Curves for Rational Elevated Temperature Design

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Masanori Ando, Nobuhiro Isobe, Nobuchika Kawasaki, Masayuki Sukekawa, Naoto Kasahara
Proc. ASME. PVP2009, Volume 1: Codes and Standards, 573-582, July 26–30, 2009
Publisher: American Society of Mechanical Engineers
Paper No: PVP2009-77232
https://doi.org/10.1115/PVP2009-77232
View Paper titled, A Comparative Study of Negligible Creep Curves for Rational Elevated Temperature Design
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Topics: Creep, Design, Temperature, Materials properties, Steel, Stainless steel, Damage, Fast neutron reactors, Ferrites (Magnetic materials), Sodium fast reactors
Proceedings Papers

Stress Evaluation Charts for Thermal Stratification Considering Heat Transfer Characteristics

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Ichiro Furuhashi, Nobuchika Kawasaki, Naoto Kasahara
Proc. ASME. PVP2009, Volume 3: Design and Analysis, 441-448, July 26–30, 2009
Publisher: American Society of Mechanical Engineers
Paper No: PVP2009-77555
https://doi.org/10.1115/PVP2009-77555
View Paper titled, Stress Evaluation Charts for Thermal Stratification Considering Heat Transfer Characteristics
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Topics: Heat transfer, Stress, Thermal stratification, Temperature, Thermal stresses, Shells, Vessels, Design, Eigenfunctions, Finite element methods
Proceedings Papers

Fatigue Strength Evaluation of Perforated Plate at Elevated Temperature Using Stress Redistribution Locus Method

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Osamu Watanabe, Bopit Bubphachot, Nobuchika Kawasaki, Naoto Kasahara
Proc. ASME. PVP2007, Volume 9: Eighth International Conference on Creep and Fatigue at Elevated Temperatures, 323-331, July 22–26, 2007
Publisher: American Society of Mechanical Engineers
Paper No: CREEP2007-26698
https://doi.org/10.1115/CREEP2007-26698
View Paper titled, Fatigue Strength Evaluation of Perforated Plate at Elevated Temperature Using Stress Redistribution Locus Method
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Topics: Fatigue strength, Stress, Temperature, Fracture (Materials), Stress concentration, Failure, Fatigue life, Stainless steel
Proceedings Papers

Creep-Fatigue Strength Evaluation of Perforated Plate at Elevated Temperature Using Stress Redistribution Locus Method

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Bopit Bubphachot, Osamu Watanabe, Nobuchika Kawasaki, Naoto Kasahara
Proc. ASME. PVP2007, Volume 9: Eighth International Conference on Creep and Fatigue at Elevated Temperatures, 333-341, July 22–26, 2007
Publisher: American Society of Mechanical Engineers
Paper No: CREEP2007-26702
https://doi.org/10.1115/CREEP2007-26702
View Paper titled, Creep-Fatigue Strength Evaluation of Perforated Plate at Elevated Temperature Using Stress Redistribution Locus Method
Open the PDF for Creep-Fatigue Strength Evaluation of Perforated Plate at Elevated Temperature Using Stress Redistribution Locus Method in another window
Topics: Creep, Fatigue, Stress, Temperature, Fracture (Materials), Damage, Displacement, Fatigue strength, Fatigue testing, Geometry