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Davies, A. R.*; Field, J. E.*; Takahashi, Koji; Hada, Kazuhiko
Diamond and Related Materials, 14(1), p.6 - 10, 2005/01
Times Cited Count：22 Percentile：64.10(Materials Science, Multidisciplinary)A CVD diamond is finding increased application and it is important to study its fatigue properties. The present paper describes research on a batch of di-electric grade CVD material. It was obtained that tensile strength at the nucleation side and the growth were side 690
90MPa and 28030MPa, respectively. Some samples survived at least 95% of their critical fracture stress for 10
cycles without fatiguing.
Davies, A. R.*; Field, J. E.*; Takahashi, Koji; Hada, Kazuhiko
Journal of Materials Science, 39(5), p.1571 - 1574, 2004/03
Times Cited Count：11 Percentile：40.78(Materials Science, Multidisciplinary)A four-point bend test was used to determine the fracture toughness of mechanical grade and di-electric (optical) grade chemical vapour deposited (CVD) diamond. The validity of the test was first confirmed by measuring the toughness of alumina and confirming the results with literature values. The toughnesses of both types of CVD were similar; 8.51.0 and 8.30.4 MPa (
) respectively. This is higher than the value of 3.40.5 MPa () measured for diamond by Field and Freeman, 1981 using an indentation technique. It is suggested that this is primarily due to differences in surface roughness. There were enough samples to make a preliminary study of the effect of temperature and these data are reported.
Tada, Eisuke; Hada, Kazuhiko; Maruo, Takeshi; Safety Design/Evaluation Group
Purazuma, Kaku Yugo Gakkai-Shi, 78(11), p.1145 - 1156, 2002/11
no abstracts in English
Hada, Kazuhiko
Nihon Kikai Gakkai Doryoku Enerugi Shisutemu Bumon Nyusu Reta, (25), p.2 - 3, 2002/10
no abstracts in English
Ohira, Shigeru; Tada, Eisuke; Hada, Kazuhiko; Neyatani, Yuzuru; Maruo, Takeshi; Hashimoto, Masayoshi*; Araki, Takao*; Nomoto, Kazuhiro*; Tsuru, Daigo; Ishida, Toshikatsu*; et al.
Fusion Science and Technology, 41(3), p.642 - 646, 2002/05
no abstracts in English
Nakahira, Masataka; Takeda, Nobukazu; Hada, Kazuhiko; Tada, Eisuke; Miya, Kenzo*; Asada, Yasuhide*
Proceedings of 10th International Conference on Nuclear Engineering (ICONE 10) (CD-ROM), 7 Pages, 2002/04
The special features of Vacuum Vessel (VV) of International Thermonuclear Experimental Reactor (ITER) are complicated structure and electromagnetic load. The VV is torus shaped, double-walled structure with ribs. The electromagnetic force is not uniform. Thus the rules for axisymmetric structures and loading are not effective for ITER VV. The double ミwalled structure requires one-sided welding joints with no possibility of access from the other side. Every joints between outer wall and rib and field joints are this type. The joint between outer wall and rib is special T-joint with partial penetration. To cover these special issues on ITER VV, a new code is under development. Supporting R&Ds are planned to be material tests to obtain joint efficiency and fatigue reduction factor, UT sensitivity tests, sensitivity tests on crevice corrosion and examination-free welding for application to field joints. This paper describes the special features of ITER VV from code stand point, concept of new code and R&Ds to apply the new code to ITER VV.
Nakajima, Hideo; Hamada, Kazuya; Okuno, Kiyoshi; Hada, Kazuhiko; Tada, Eisuke
Proceedings of 10th International Conference on Nuclear Engineering (ICONE 10) (CD-ROM), 8 Pages, 2002/00
The Japan Atomic Energy Research Institute (JAERI) has conducted to develop a new design code for construction and operation/maintenance of the International Thermonuclear Experimental Reactor (ITER), which will be formed as a code case of ASME B&PV Code Section III, division 4, in collaboration with the ASME international. The new design code will also include the several new techniques and materials developed for each components of ITER. This paper describes the new cryogenic steels used in the magnet system and the design approach with taking account of unique features of the ITER superconducting magnets.
Tsuru, Daigo; Neyatani, Yuzuru; Araki, Takao*; Nomoto, Kazuhiro*; Ohira, Shigeru; Maruo, Takeshi; Hashimoto, Masayoshi*; Hada, Kazuhiko; Tada, Eisuke
Fusion Engineering and Design, 58-59, p.985 - 989, 2001/11
Times Cited Count：4 Percentile：33.16(Nuclear Science & Technology)no abstracts in English
Ohira, Shigeru; Tada, Eisuke; Hada, Kazuhiko; Neyatani, Yuzuru; Maruo, Takeshi; Hashimoto, Masayoshi*; Araki, Takao*; Nomoto, Kazuhiro*; Tsuru, Daigo; Ishida, Toshikatsu*; et al.
Fusion Engineering and Design, 54(3-4), p.515 - 522, 2001/04
Times Cited Count：3 Percentile：26.81(Nuclear Science & Technology)no abstracts in English
Nishihara, Tetsuo; Hada, Kazuhiko; Nishimura, Kuniyuki*
JAERI-Tech 2000-046, 54 Pages, 2000/07
JAERI-Tech-2000-046.pdf:2.72MB
no abstracts in English
Hada, Kazuhiko
Nihon Kikai Gakkai Rombunshu, A, 65(636), p.108 - 115, 1999/08
no abstracts in English
Nishihara, Tetsuo; Hada, Kazuhiko
Nihon Genshiryoku Gakkai-Shi, 41(5), p.571 - 578, 1999/05
Times Cited Count：5 Percentile：40.20(Nuclear Science & Technology)no abstracts in English
Inagaki, Yoshiyuki; Takeda, Tetsuaki; Nishihara, Tetsuo; Hada, Kazuhiko; Hayashi, Koji
Nihon Genshiryoku Gakkai-Shi, 41(3), p.250 - 257, 1999/00
Times Cited Count：10 Percentile：60.20(Nuclear Science & Technology)no abstracts in English
Miyamoto, Yoshiaki; Shiozawa, Shusaku; Ogawa, Masuro; Akino, Norio; Hada, Kazuhiko; Inagaki, Yoshiyuki; Shimizu, Saburo; Onuki, Kaoru
Proc. of 9th Canadian Hydrogen Conf., p.205 - 213, 1999/00
no abstracts in English
Miyamoto, Yoshiaki; Shiozawa, Shusaku; Ogawa, Masuro; Hada, Kazuhiko
Proc. of the Int. Conf. on Future Nuclear Systems (GLOBAL'99)(CD-ROM), 7 Pages, 1999/00
no abstracts in English
Inagaki, Yoshiyuki; Nishihara, Tetsuo; Takeda, Tetsuaki; Hada, Kazuhiko; Hayashi, Koji
Proceedings of 7th International Conference on Nuclear Engineering (ICONE-7) (CD-ROM), 10 Pages, 1999/00
no abstracts in English
Miyamoto, Yoshiaki; Shiozawa, Shusaku; Ogawa, Masuro; Akino, Norio; Shimizu, Saburo; Hada, Kazuhiko; Inagaki, Yoshiyuki; Onuki, Kaoru; Takeda, Tetsuaki; Nishihara, Tetsuo
IAEA-TECDOC-1056, p.191 - 200, 1998/11
no abstracts in English
Miyamoto, Yoshiaki; Shiozawa, Shusaku; Akino, Norio; Ogawa, Masuro; Hada, Kazuhiko; Shiina, Yasuaki; Shimizu, Saburo; Inagaki, Yoshiyuki; Onuki, Kaoru; Fumizawa, Motoo; et al.
Proc. of 9th Annual U. S.Hydrogen Meeting, p.367 - 369, 1998/00
no abstracts in English
Inagaki, Yoshiyuki; Hada, Kazuhiko; Nishihara, Tetsuo; Takeda, Tetsuaki; Hino, Ryutaro; Haga, Katsuhiro
JAERI-Tech 97-050, 125 Pages, 1997/10
no abstracts in English
Nishihara, Tetsuo; Hada, Kazuhiko; Shiozawa, Shusaku
JAERI-Research 97-022, 110 Pages, 1997/03
JAERI-Research-97-022.pdf:4.1MB
no abstracts in English
