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Proceedings Papers

Constraint Effect on Fracture in Ductile-Brittle Transition Temperature Region

Kiminobu Hojo, Takatoshi Hirota, Yasuto Nagoshi, Takuya Fukahori, Kimihisa Sakima, Mitsuru Ohata, Fumiyoshi Minami
Proc. ASME. PVP2021, Volume 1: Codes and Standards, V001T01A055, July 13–15, 2021
Paper No: PVP2021-61318
DOI: https://doi.org/10.1115/PVP2021-61318
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Topics: Ductile fracture, Ductile-brittle transition, Fracture (Materials), Temperature
Proceedings Papers

Effect of Plastic Constraint and Cladding on Semi-Elliptical Shaped Crack in Fracture Toughness Evaluation for a Reactor Pressure Vessel Steel

Masaki Shimodaira, Tohru Tobita, Yasuto Nagoshi, Kai Lu, Jinya Katsuyama
Proc. ASME. PVP2021, Volume 1: Codes and Standards, V001T01A057, July 13–15, 2021
Paper No: PVP2021-61725
DOI: https://doi.org/10.1115/PVP2021-61725
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Topics: Cladding systems (Building), Fracture (Materials), Fracture toughness, Reactor vessels, Steel
Proceedings Papers

Benchmark Analysis by Beremin Model and GTN Model in CAF Subcommittee

Takatoshi Hirota, Yasuto Nagoshi, Kiminobu Hojo, Hiroshi Okada, Akiyuki Takahashi, Jinya Katsuyama, Takashi Ueda, Takuya Ogawa, Kenji Yashirodai, Mitsuru Ohata, Fumiyoshi Minami
Proc. ASME. PVP2021, Volume 1: Codes and Standards, V001T01A056, July 13–15, 2021
Paper No: PVP2021-61668
DOI: https://doi.org/10.1115/PVP2021-61668
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Topics: Brittleness, Computer simulation, Damage, Deformation, Ductile fracture, Ductile-brittle transition, Evaluation methods, Finite element analysis, Finite element model, Flat plates
Proceedings Papers

Investigation of Temperature Dependence of Weibull Parameters of the Beremin Model in Ductile-Brittle Transition Temperature Region

Kiminobu Hojo, Naoki Ogawa, Kentaro Yoshimoto, Takatoshi Hirota, Yasuto Nagoshi
Proc. ASME. PVP2020, Volume 6: Materials and Fabrication, V006T06A014, August 3, 2020
Paper No: PVP2020-21651
DOI: https://doi.org/10.1115/PVP2020-21651
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Topics: Ductile-brittle transition, Temperature, Temperature effects, Alloy steel, Fracture (Materials), Fracture (Process), Brittle fracture, Carbon steel, Ductile fracture, Electromagnetic scattering
Proceedings Papers

Fracture Analysis of Ductile-Brittle Transition Temperature Region Considering Specimens With Different Constraints

Kiminobu Hojo, Takatoshi Hirota, Naoki Ogawa, Kentaro Yoshimoto, Yasuto Nagoshi, Shinichi Kawabata
Proc. ASME. PVP2018, Volume 1A: Codes and Standards, V01AT01A057, July 15–20, 2018
Paper No: PVP2018-84385
DOI: https://doi.org/10.1115/PVP2018-84385
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Topics: Ductile-brittle transition, Fracture (Materials), Fracture (Process), Temperature, Electromagnetic scattering, Flat plates, Brittleness, Damage mechanics, Ductile fracture, Evaluation methods
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