Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Toshiki Okamoto"'
Publikováno v:
Nihon Kikai Gakkai ronbunshu, Vol 85, Iss 876, Pp 18-00391-18-00391 (2019)
This paper describes elastic-plastic fracture mechanics assessment methods of a pipe having multiple circumferential cracks. Ductile fracture strength of a multiple cracked pipe was evaluated using J-integral based on a reference stress method. Using
Externí odkaz:
https://doaj.org/article/8770541318d44916950f381729b78ae3
Publikováno v:
Mechanical Engineering Journal, Vol 5, Iss 3, Pp 17-00605-17-00605 (2018)
This paper describes the J-integral evaluation methods for the case of multiple circumferential cracks in a cylinder subjected to bending moments. J-integral is one of the parameters of fracture mechanics used in the fracture assessment of materials
Externí odkaz:
https://doaj.org/article/43b0c22065a146ab823daad7efcd2521
Autor:
Kiminobu HOJO, Shotaro HAYASHI, Wataru NISHI, Masayuki KAMAYA, Jinya KATSUYAMA, Koichi MASAKI, Masaki NAGAI, Toshiki OKAMOTO, Yasukazu TAKADA, Shinobu YOSHIMURA
Publikováno v:
Mechanical Engineering Journal, Vol 3, Iss 4, Pp 16-00083-16-00083 (2016)
Performance demonstration certification of non-destructive inspection for cast stainless steel (CASS) has been planned but the target flaw depth to be detected has not been determined yet in Japan. The target flaw size is closely connected to the all
Externí odkaz:
https://doaj.org/article/6b8f36aec73649b380916388423e7ae4
Autor:
Shinji Nakaya, Hideyuki Taguchi, Mitsuhiro Tsue, Che Zhao, Koichi Omi, Toshiki Okamoto, Yutaka Ikeda
Publikováno v:
Proceedings of the Combustion Institute. 38:5933-5942
Combustion instabilities were investigated experimentally for a hydrogen-rich combustion in a model afterburner installed at the end of a high-enthalpy wind tunnel. Air was supplied at 0.3 MPa and 950 K. The combustion instabilities were studied with
Autor:
Toshiki Okamoto, Shinobu Yoshimura, Masaki Nagai, Yasukazu Takada, Wataru Nishi, Jinya Katsuyama, Kiminobu Hojo, Shotaro Hayashi, Koichi Masaki, Masayuki Kamaya
Publikováno v:
Mechanical Engineering Journal, Vol 3, Iss 4, Pp 16-00083-16-00083 (2016)
Performance demonstration certification of non-destructive inspection for cast stainless steel (CASS) has been planned but the target flaw depth to be detected has not been determined yet in Japan. The target flaw size is closely connected to the all
Autor:
Tetsuya Sato, Mitsuhiro Tsue, Shinji Nakaya, Takahiro Chiga, Takayuki Kojima, Sho Wakabayashi, Hideyuki Taguchi, Yutaka Ikeda, Toshiki Okamoto, Hidekazu Yoshida
Publikováno v:
22nd AIAA International Space Planes and Hypersonics Systems and Technologies Conference.
OS0917-274 Stress intensity factor assessment method of multiple circumferential flaws in a cylinder
Publikováno v:
The Proceedings of the Materials and Mechanics Conference. 2015:OS0917-27
Publikováno v:
Volume 3A: Design and Analysis.
Impact analyses for storage and transportation cask drop tests were performed using the explicit dynamic finite element analysis code to demonstrate analytical accuracy and benchmark the analytical code. The test series for this benchmarking were pro
Publikováno v:
Annals of Nuclear Energy. 33:1315-1321
The anisotropic scattering effect to keff is studied for UO2 and MOX fueled BWR assemblies. The anisotropic scattering effect increases the assembly k∞ by 0.44% Δk for the UO2 assembly with 0% void fraction, and by 0.21% Δk for the MOX assembly w
Autor:
Yoshihisa Okazaki, Hiromasa Mine, Toshiki Okamoto, Masatoshi Kudo, Hiroshi Kashida, Toshiharu Sakurai, Yutaka Asakuma, Mitsunari Yamada, Teppei Adachi, Shigenaga Matsui, Masashi Kono, Rie Tanaka, Tomoyuki Nagai, Yoriaki Komeda
Publikováno v:
Gastrointestinal Endoscopy. 83:AB392