Zobrazeno 1 - 10
of 199
pro vyhledávání: '"Masaki Nagai"'
Publikováno v:
Mechanical Engineering Journal, Vol 11, Iss 4, Pp 24-00110-24-00110 (2024)
To investigate the crack growth behavior in a cladded structure, a numerical simulation method based on the extended finite element method (XFEM) was developed. This method employs 8-node hexahedral continuum elements enriched only with the Heaviside
Externí odkaz:
https://doaj.org/article/ab80d9b7c324405ba7bf505112d500a5
Publikováno v:
IEEE Access, Vol 12, Pp 43747-43757 (2024)
The construction industry currently is confronted with significant challenges, stemming from a decreasing working population coupled with an aging workforce. Accordingly, the development of teleoperated hydraulic excavators is being investigated to o
Externí odkaz:
https://doaj.org/article/e2d9fb6db72e4b0a8364ec77a3c453d5
Publikováno v:
Research and Review Journal of Nondestructive Testing, Vol 1, Iss 1 (2023)
Centrifugally cast stainless steel (CASS) is widely used in primary coolant piping of pressurized water reactor plants because of its high corrosion resistance and high strength. An in-service inspection based on ultrasonic testing (UT) has to be con
Externí odkaz:
https://doaj.org/article/48bfa9ecf14b4f13a4b84172c6c13e3b
Publikováno v:
Research and Review Journal of Nondestructive Testing, Vol 1, Iss 1 (2023)
Austenitic stainless steel is widely used in nuclear power plants (NPPs) and a variety of occurrences of stress corrosion cracking (SCC) near its weld have been reported among NPPs. Ultrasonic testing is a critical technique for the detection and dep
Externí odkaz:
https://doaj.org/article/9024b5abbcd24780bb0fc31313bcd4d2
Autor:
Kai LU, Hisashi TAKAMIZAWA, Yinsheng LI, Koichi MASAKI, Daiki TAKAGOSHI, Masaki NAGAI, Takashi NANNICHI, Kenta MURAKAMI, Yasuhiro KANTO, Kenji YASHIRODAI, Takahiro HAYASHI
Publikováno v:
Mechanical Engineering Journal, Vol 10, Iss 4, Pp 22-00484-22-00484 (2023)
A probabilistic fracture mechanics (PFM) analysis code, PASCAL, has been developed by Japan Atomic Energy Agency for failure probability and failure frequency evaluation of reactor pressure vessels (RPVs) considering neutron irradiation embrittlement
Externí odkaz:
https://doaj.org/article/456f0cb87df94e08bfd1d023bea86d39
Autor:
Miyuki Kawado, Shuji Hashimoto, Akiko Ohta, Mari S. Oba, Ritei Uehara, Kiyosu Taniguchi, Tomimasa Sunagawa, Masaki Nagai, Yoshitaka Murakami
Publikováno v:
BMC Infectious Diseases, Vol 20, Iss 1, Pp 1-7 (2020)
Abstract Background The rates of newly diagnosed cases of sexually transmitted diseases, including genital chlamydial infection and gonorrhea, are important for prevention and control of these diseases. However, nationwide rates are not reported in J
Externí odkaz:
https://doaj.org/article/2fad730589b14538b79afcf05449ef72
Autor:
Kai LU, Jinya KATSUYAMA, Yinsheng LI, Yuhei MIYAMOTO, Takatoshi HIROTA, Yu ITABASHI, Masaki NAGAI, Masahide SUZUKI, Yasuhiro KANTO
Publikováno v:
Mechanical Engineering Journal, Vol 7, Iss 3, Pp 19-00573-19-00573 (2020)
Probabilistic fracture mechanics (PFM) is considered a promising methodology in assessing the integrity of structural components in nuclear power plants because it can rationally represent the influence parameters in their probabilistic distributions
Externí odkaz:
https://doaj.org/article/a0cb1ac09d11407d8a3bd69bd0f2080e
Publikováno v:
Nihon Kikai Gakkai ronbunshu, Vol 84, Iss 867, Pp 18-00192-18-00192 (2018)
Cast stainless steel (CASS) is widely used in primary coolant piping of nuclear power plants because of its high corrosion resistance and high strength. An in-service inspection based on ultrasonic testing (UT) has to be conducted for such weld joint
Externí odkaz:
https://doaj.org/article/4e06573fed414400a860a8e192235445
Autor:
Naoki MIURA, Masaki NAGAI
Publikováno v:
Nihon Kikai Gakkai ronbunshu, Vol 83, Iss 849, Pp 16-00116-16-00116 (2017)
When cracked bodies are subjected to cyclic loading, fatigue crack growth evaluation is often required from the viewpoint of the assurance of fitness-for-service. For cyclic loading with constant amplitude, crack growth can be calculated by integrati
Externí odkaz:
https://doaj.org/article/a90a25fb8fbc409aa625344f00c36db3
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