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Kai, Tetsuya; Shinohara, Takenao; Hiroi, Kosuke; Su, Y. H.; Oikawa, Kenichi
Hihakai Kensa, 67(5), p.209 - 216, 2018/05
no abstracts in English
Kureta, Masatoshi
Kagaku Kogaku, 80(8), p.464 - 467, 2016/08
A neutron radiography is technology which carries out visualization and measurement of the inside of a substance using neutrons. This technology has the complementary feature comparing with X-ray radiography (Roentgen technique). In this review paper, the measurement principle, some application examples such as visualization of oil in the working car engine, and about the leading-edge technology using high-intensity proton beam accelerator facility J-PARC (common neutron imaging facility), etc. It was introduced in the form where the whole neutron radiography technology for every dimension of measurement were covered.
Kureta, Masatoshi
Hamon, 24(特別号), 2 Pages, 2014/11
The fundamentals and applications on the neutron imaging technique, volume visualization and 3D measurement by the neutron 3D-CT technique and the most advanced imaging technique by using pulsed neutrons were reviewed in this paper. Visualization and measurement of the inside mortaring car engine is one of the industrial applications on the neutron imaging technique. This technique was also applied for visualization and measurement of the multiphase plow applications. The 3D visualization technique has been used for the concrete research etc. The pulsed neutron imaging techniques developed for J-PARC have made possible element-selective imaging and metallographic structure imaging which were impossible by the traditional techniques. Newly providing pulsed neutron imaging facilities for common use is also introduced briefly.
Katayama, Yoshinori
Nihon Butsuri Gakkai-Shi, 60(6), p.456 - 460, 2005/06
By means of in-situ high-temperature and high-pressure experiment, we found two distinct structures of molten phosphorus, one is a molecular fluid and the other is a polymeric liquid, and an abrupt and reversible structural transformation between them at about 1 GPa. Further investigations revealed that the two structures have different densities and they separate macroscopically during the transformation. These results support a view that this change is an extremely rare example of a first-order phase transition between two stable disordered phases besides liquid-gas transition.
Ishiyama, Shintaro; Matsubayashi, Masahito; Akiba, Masato
Nihon Genshiryoku Gakkai Wabun Rombunshi, 1(4), p.439 - 448, 2002/12
no abstracts in English
Kureta, Masatoshi; Hibiki, Takashi*; Mishima, Kaichiro*; Akimoto, Hajime
Nihon Kikai Gakkai Rombunshu, B, 67(653), p.179 - 188, 2001/01
no abstracts in English
Mishima, Kaichiro*; Hibiki, Takashi*; ; Tobita, Yoshiharu
PNC TY9604 96-003, 10 Pages, 1996/05
no abstracts in English
Ishikawa, Isamu
Proc. of 11th KAIF/KNS Annual Conf., 0, p.611 - 619, 1996/00
no abstracts in English
Niimura, Nobuo*
Genshiryoku Kogyo, 41(6), p.54 - 61, 1995/00
no abstracts in English
Niimura, Nobuo*; ; ; ; ; ; ; Hidaka, M.*
Nuclear Instruments and Methods in Physics Research A, 349, p.521 - 525, 1994/00
Times Cited Count:159 Percentile:99.46(Instruments & Instrumentation)no abstracts in English
Funahashi, Satoru; Shirai, Eiji; Morii, Yukio; Kodaira, Tsuneo; Takahashi, Hidetake
Nihon Genshiryoku Gakkai-Shi, 35(9), p.809 - 811, 1993/09
no abstracts in English
Takahashi, Hidetake; ; Hoshi, Michio; Funahashi, Satoru; Tsuruno, Akira; Kodaira, Tsuneo
Enerugi Rebyu, 11(10), p.4 - 30, 1991/09
no abstracts in English
Kumata, Masahiro;
Radioisotopes, 40(6), p.240 - 243, 1991/06
no abstracts in English
Kumata, Masahiro; ; ; ;
JAERI-M 90-179, 21 Pages, 1990/10
no abstracts in English
; ; Ikawa, Katsuichi; Iwamoto, K.
JAERI-M 7406, 14 Pages, 1977/11
no abstracts in English
; ; ;
Hihakai Kensa, 26(2), p.91 - 95, 1977/02
no abstracts in English
; ; Iwamoto, K.
JAERI-M 4749, 16 Pages, 1972/03
no abstracts in English
Kai, Tetsuya
no journal, ,
no abstracts in English
Sakai, Kazumi*; Ogata, Rui*; Kimura, Nobuharu*; Matsumoto, Yoshihiro*; Kurita, Keisuke
no journal, ,
Neutron imaging technique was applied to visualize grease fluidity in bearings which determines the bearing torque property. Two types of lithium (Li) greases with different thickeners were used in this study. The Li complex grease was superior in lowering bearing torque related to energy-saving performance. After bearing rotations, neutron radiography and computed tomography measurements of the greases distributed in the bearings were performed. Adhesion of the Li complex grease to bearing balls was quite limited, and most of the grease stayed on cage surfaces between the balls; adhesion of single Li soap grease to bearing balls was remarkable. The neutron radiography with bearing rotations was also conducted to capture the moment of the grease flow. The observation with bearing rotations revealed that single Li soap grease flows gradually not from the beginning of bearing rotations. Based on these results, the lubrication mechanisms will be proposed.