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Journal Articles

Evaluation of the cryogenic tensile properties for aramid fiber rod

Saito, Toru; Okubo, Toshikazu*; Izumi, Keisuke*; Okawa, Yoshinao*; Kobayashi, Norihiro*; Yamazaki, Toru; Kawano, Katsumi; Isono, Takaaki

Teion Kogaku, 50(8), p.400 - 408, 2015/08

Aramid fiber-reinforced plastic (AFRP) has been developed as a structural material that has the advantages of light weight and high strength. In this study, tensile tests were carried out to measure the tensile properties of AFRP rod on the market for reinforcement of concrete at room temperature, 77 K and 4.2 K. Especially at cryogenic temperatures, it is difficult to perform a tensile test of the bar because the specimen slips through the jig grip. To prevent the rod from slipping, tensile tests were carried out with some filling conditions. The applicable and appropriate tensile test conditions were established by modifying the jig grip, treating the surface of the rod and using cryogenic epoxy infill to grip the rod. They were more than 1100 MPa. Additionally, the AFRP rod included a temperature dependence in which the Young's modulus increased as the test temperature decreased. It was confirmed that the Young's modulus increased because aramid fiber was more dominant than epoxy.

Journal Articles

Fundamental test results of grounding conductor with attenuator for high frequency noise

Okada, Kenichi*; Tsuneoka, Masaki; Murano, Yoshihiro*; Okawa, Yoshinao

Denki Setsubi Gakkai-Shi, 22(2), p.151 - 158, 2002/02

no abstracts in English

Journal Articles

The Electric installation at environment of nuclear fusion , 34; Fase operating characteristics in high magnetic field, 2

Okawa, Yoshinao; Kashimura, Shinji*; Murano, Yoshihiro*; Ito, Michio*; Okada, Kenichi*; Izumi, Keisuke*; Tsuchida, Takashi*

Dai-19-Kai Denki Setsubi Gakkai Zenkoku Taikai Koen Rombunshu, p.415 - 416, 2001/00

no abstracts in English

Journal Articles

The Electric installation at environment of nuclear fusion, 30; Fuse operating characteristics in high magnetic field

Okawa, Yoshinao; Murano, Yoshihiro*; Okada, Kenichi*; Kawakami, Kunio*; Izumi, Keisuke*; *; Sasaki, Takashi*; *

Heisei 12-Nendo Denki Setsubi Gakkai Zenkoku Taikai Koen Rombunshu, p.315 - 316, 2000/00

no abstracts in English

Journal Articles

Effect of seismic isolation on the tokamak in ITER

Tsunematsu, Toshihide; Namba, Haruyuki*; Akutsu, Yoichi; Okawa, Yoshinao; Yagenji, Akira; Takeda, Masatoshi*; Yajima, Kensaku*; Nitta, Yoshio*; Kobayashi, Kenichi*; Maeda, Ikuo*; et al.

Fusion Engineering and Design, 41(1-4), p.415 - 420, 1998/09

 Times Cited Count:3 Percentile:65.86

no abstracts in English

Journal Articles

Pipe support across isolated and seismic structure in ITER

Hashimoto, Masayoshi*; Tsunematsu, Toshihide; Okawa, Yoshinao; *; ; Yamada, Hiroyuki; ; *; *; Murano, Y.*; et al.

Fusion Engineering and Design, 41, p.407 - 414, 1998/00

 Times Cited Count:2 Percentile:73.73

no abstracts in English

Journal Articles

ITER heat removal system; System and process control design

*; *; *; *; *; Okawa, Yoshinao; Maruyama, So; *; V.Tanchuk*; R.Haange*; et al.

Fusion Technology 1998, 2, 4 Pages, 1998/00

no abstracts in English

Journal Articles

Design and examination of the building for emergency power supply with isolation equipment and emergency generator system

Okawa, Yoshinao; Yagenji, Akira; Wakui, Toshiaki*; Murano, Yoshihiro*; Kawakami, Kunio*; Yamakura, Hideki*

Heisei 10-Nendo (Dai-16-Kai) Denki Setsubi Gakkai Zenkoku Taikai Koen Rombunshu, p.175 - 176, 1998/00

no abstracts in English

JAEA Reports

Assembly tool design

*; Nakahira, Masataka; Okawa, Yoshinao; Tada, Eisuke; Seki, Masahiro

JAERI-Tech 96-023, 30 Pages, 1996/06

JAERI-Tech-96-023.pdf:1.03MB

no abstracts in English

JAEA Reports

Irradiation tests of critical components for remote handling system in gamma radiation environment

Obara, Kenjiro; Kakudate, Satoshi; Oka, Kiyoshi; Furuya, Kazuyuki; *; Tada, Eisuke; Shibanuma, Kiyoshi; Koizumi, Koichi; Okawa, Yoshinao; Morita, Yosuke; et al.

JAERI-Tech 96-011, 111 Pages, 1996/03

JAERI-Tech-96-011.pdf:5.9MB

no abstracts in English

Journal Articles

The Experiment of some lighting equipments on magnetic field

*; Okawa, Yoshinao; Nishi, Masataka; *; *; Okada, K.*; *; *

Dai-14-Kai Denki Setsubi Gakkai Kenkyu Happyokai Koen Rombunshu, 0, p.291 - 292, 1996/00

no abstracts in English

Journal Articles

R&D of the lighting equipment for magnetic field

*; Okawa, Yoshinao; Nishi, Masataka; *; *; *; *; Okada, K.*

Dai-14-Kai Denki Setsubi Gakkai Kenkyu Happyokai Koen Rombunshu, 0, p.293 - 294, 1996/00

no abstracts in English

Journal Articles

Present activities preparation of a Japanese draft of structural design guidelines for the experimental fusion reactor

Miya, Kenzo*; ; Takatsu, Hideyuki; Hada, Kazuhiko; Koizumi, Koichi; Jitsukawa, Shiro; ; Okawa, Yoshinao; Shimakawa, T.*; Aoto, Kazumi*; et al.

Fusion Engineering and Design, 31, p.145 - 165, 1996/00

 Times Cited Count:3 Percentile:65.54

no abstracts in English

Journal Articles

R&D of 3-D base isolation system, part 3; The Experimental study on mechanical properties

Akutsu, Yoichi; Okawa, Yoshinao; Suzuki, Hideyuki; *; *; *; *

Nihon Kenchiku Gakkai Taikai Gakujutsu Koen Kogaishu, 0, p.1147 - 1148, 1996/00

no abstracts in English

Journal Articles

Development of electrically and magnetically insulated building

*; *; Okawa, Yoshinao

Nihon Kenchiku Gakkai Taikai Gakujutsu Koen Kogaishu, 0, p.1051 - 1052, 1996/00

no abstracts in English

Journal Articles

R&D of a nuclear fusion and radioactive resistance materials

Okawa, Yoshinao

Hoshasen To Sangyo, 0(66), p.20 - 24, 1995/00

no abstracts in English

Journal Articles

R&D-RC structure using electrical insulated reinforcing bar, part 13; Primary test of electrical concrete crack monitoring method

Akutsu, Yoichi; Okawa, Yoshinao; Suzuki, Hideyuki; *; *; *

Nihon Kenchiku Gakkai Taikai Gakujutsu Koen Kogaishu, 0, p.1337 - 1338, 1995/00

no abstracts in English

Journal Articles

R&D of seismic isolation system; R&D for fusion

Okawa, Yoshinao; Akutsu, Yoichi; Suzuki, Hideyuki; *; *; *; *

Nihon Kenchiku Gakkai Taikai Gakujutsu Koen Kogaishu, 0, p.1047 - 1048, 1995/00

no abstracts in English

Journal Articles

Probabilistic evaluation of seismic isolation effect with respect to siting of a fusion reactor facility

Takeda, M.*; Okawa, Yoshinao; *; Akutsu, Yoichi; *

Seismic,Shock,and Vibration Isolation 1995 (PVP-Vol. 319), 0, p.317 - 322, 1995/00

no abstracts in English

Journal Articles

Probabilistic evaluation of seismic isolation effect with respect to siting of a fusion reactor facility

Takeda, M.*; Okawa, Yoshinao; Akutsu, Yoichi; Suzuki, Hideyuki; *; *

Nihon Kenchiku Gakkai Taikai Gakujutsu Koen Kogaishu, 0, p.45 - 46, 1994/09

no abstracts in English

42 (Records 1-20 displayed on this page)