Kodai Toyota - My portal

Profile Information

Affiliation: Japan Atomic Energy Agency

J-GLOBAL ID: 202101015031094144
researchmap Member ID: R000017466

Research Areas

Papers

Validation of the applicability of the best-fit fatigue curves for 550$^{\circ}$C in Mod.9Cr-1Mo steel to 1$\times$10$^{11}$ cycles

Toyota Kodai, Imagawa Yuya, Onizawa Takashi, Kato Shoichi, Furuya Yoshiyuki*

Nihon Kikai Gakkai Rombunshu (Internet), 89(928) 23-00206\_1-23-00206\_15, Dec, 2023 Peer-reviewed
Sodium-cooled Fast Reactors

Ohshima Hiroyuki, Morishita Masaki*, Aizawa Kosuke, Ando Masanori, Ashida Takashi, Chikazawa Yoshitaka, Doda Norihiro, Enuma Yasuhiro, Ezure Toshiki, Fukano Yoshitaka …

Sodium-cooled Fast Reactors; JSME Series in Thermal and Nuclear Power Generation, Vol.3, 631, Jul, 2022 Peer-reviewed
Material data acquisition activities to develop the material strength standard for sodium-cooled fast reactors

Toyota Kodai, Onizawa Takashi, Wakai Takashi, Hashidate Ryuta, Kato Shoichi

Proceedings of International Conference on Fast Reactors and Related Fuel Cycles; Sustainable Clean Energy for the Future (FR22) (Internet), 10, Apr, 2022 Peer-reviewed
Evaluation of the Japanese fatigue test data in Gr.91 for elevated temperature design

Ando Masanori, Toyota Kodai, Hashidate Ryuta, Onizawa Takashi

Proceedings of ASME 2021 Pressure Vessels and Piping Conference (PVP 2021) (Internet), 10, Jul, 2021 Peer-reviewed
Proposal of maintenance rationalization for next-generation fast reactors based on the analysis of the prolonged maintenance of the prototype fast-breeder reactor in Japan, "Monju", 2; Analysis of maintenance plan of "Monju" in reactor cold shutdown

Toyota Kodai, Hashidate Ryuta, Takahashi Keita, Yada Hiroki, Takaya Shigeru

Hozengaku, 20(2) 95-103, Jul, 2021 Peer-reviewed
Proposal of maintenance rationalization for next-generation fast reactors based on the analysis of the prolonged maintenance of the prototype fast-breeder reactor in Japan, "Monju", 1; Analysis of plant schedule of "Monju" in cold shutdown

Hashidate Ryuta, Toyota Kodai, Takahashi Keita, Yada Hiroki, Takaya Shigeru

Hozengaku, 19(4) 115-122, Jan, 2021 Peer-reviewed

Misc.

FBR metallic materials test manual (2023 revised edition)

Imagawa Yuya, Toyota Kodai, Onizawa Takashi, Kato Shoichi

JAEA-Testing 2023-004, 76, Mar, 2024

Presentations

Development of fatigue testing techniques using solid round bar miniature specimens

Imagawa Yuya, Toyota Kodai, Onizawa Takashi

日本金属学会2024年春期(第174回)講演大会
Thermal aging effects on high temperature tensile properties of Mod.9Cr-1Mo steel

Toyota Kodai, Imagawa Yuya, Onizawa Takashi

日本金属学会2024年春期(第174回)講演大会
Development of the material strength standard of 316FR steel and modified 9Cr-1Mo steel for next-generation fast reactor in Japan

Onizawa Takashi, Toyota Kodai, Imagawa Yuya, Okajima Satoshi, Ando Masanori

27th International Conference on Structural Mechanics in Reactor Technology (SMiRT 27)
Characterization of iron-based and tungsten-based high-entropy alloys

Wakai Eiichi, Noto Hiroyuki*, Shibayama Tamaki*, Iwamoto Yosuke, Sato Koichi*, Yano Yukihiro*, Yoshikawa Maya*, Nakagawa Yuki*, Toyota Kodai, Onizawa Takashi

Nuclear Materials Conference 2022 (NuMat 2022)
Machine learning of ultrasonic phased-array images for flaw detection

Tomita Naoki*, Furuya Masahiro*, Asahi Manabu*, Hisamochi Rikuya*, Toyota Kodai, Yada Hiroki

日本機械学会第26回動力・エネルギー技術シンポジウム
Study of multi-simultaneous measurement system development under radiation environment and innovative materials

Wakai Eiichi, Iwamoto Yosuke, Shibayama Tamaki*, Sato Koichi*, Toyota Kodai, Onizawa Takashi, Wakui Takashi, Ishida Taku*, Makimura Shunsuke*, Nakagawa Yuki*, Yano Yoshihiro*

日本金属学会2022年春期(第170回)講演大会
Evaluation of irradiation resistance of 316FR stainless steel under in-situ electron irradiation observation

Toyota Kodai, Wakai Eiichi, Onizawa Takashi, Shibayama Tamaki*, Nakagawa Yuki*

日本金属学会2022年春期(第170回)講演大会
Development of location identification method of reactor internal structures using ultrasonic phased array

Asahi Manabu*, Tomita Naoki*, Furuya Masahiro*, Morita Hidetoshi*, Toyota Kodai

日本原子力学会関東・甲越支部第20回若手研究者・技術者発表討論会
Evaluation of defect number density in sodium equipment stainless steel welds

Toyota Kodai, Hashidate Ryuta, Yada Hiroki, Takaya Shigeru, Miyakoshi Hiroyuki, Kato Shoichi

日本保全学会第17回学術講演会
Analysis of issues related to maintenance period in the fast breeder prototype reactor Monju, 2; Analysis of plant maintenance plan

Toyota Kodai, Hashidate Ryuta, Takahashi Keita, Yada Hiroki, Takaya Shigeru

日本保全学会第16回学術講演会
Analysis of issues related to maintenance period of the fast breeder prototype reactor Monju, 1; Analysis of plant operation for maintenance of cold shutdown Monju

Hashidate Ryuta, Toyota Kodai, Takahashi Keita, Yada Hiroki, Takaya Shigeru

日本保全学会第16回学術講演会
Development of high cycle fatigue evaluation method for fast reactor structural materials

Toyota Kodai

平成31年度日本原子力学会北関東支部若手研究者発表会
The Material property equations for 316FR steel at extremely high temperature

Okuda Takahiro, Yamashita Hayato, Toyota Kodai, Shimomura Kenta, Onizawa Takashi, Kato Shoichi

日本鉄鋼協会第176回秋季講演大会

Research Projects

Development of multi-type simultaneous measurement method in radiation field toward the creation of innovative materials

Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (A), Japan Society for the Promotion of Science, Apr, 2021 - Mar, 2025