Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Syuzo Fujiwara"'
Publikováno v:
Journal of Materials Processing Technology. 85:69-73
A new hard material, the B–C–N heterodiamond, was synthesized by the shock-compression method. The heterodiamond is a polycrystalline material coagulated with nano-crystallites and the fine powder is tinged with deep bluish black. The heterodiamo
Publikováno v:
IEEE Transactions on Magnetics. 33:532-537
Detailed analysis of electromagnetic processes in railgun armatures shows that an electromagnetic drag mechanism caused by the generation of eddy currents is an ubiquitous effect in any railgun system. The results of an energy balance analysis allowe
Autor:
S. Usuba, Y. Kakudate, M. Miyamoto, M. Den, A. Kubota, Syuzo Fujiwara, Masatake Yoshida, T. Morita
Publikováno v:
IEEE Transactions on Magnetics. 29:1082-1087
The basic experimental data obtained with a large current opening switch for current commutation using explosives are presented. The experimental results show that currents up to a maximum of 40 kA can be completely interrupted within 30 mu s. The me
Autor:
A. Kubota, Masatake Yoshida, Aoki Katsutoshi, M. Den, Syuzo Fujiwara, S. Usuba, H. Yamawaki, M. Miyamoto, Y. Kakudate
Publikováno v:
IEEE Transactions on Magnetics. 27:611-616
A novel concept for the DE (discrete electrode) railgun is proposed, and preliminary experiments of plasma acceleration were conducted. The fused DE railgun could regulate the armature current distribution so that it would be more localized than that
Autor:
Yoshinori Koga, Takaaki Manabe, Toshiya Kumagai, Shin-Ichi Shikata, Masatou Ishihara, Yasuo Ebata, Takako Nakamura, Syuzo Fujiwara, Hideaki Nakahata, Akihiro Hachigo
Publikováno v:
Japanese Journal of Applied Physics. 40:5065
C-axis oriented aluminum nitride (AlN) thin films with a thickness of 1 µm were prepared by reactive DC magnetron sputtering on polycrystalline diamond substrates at a substrate temperature of 623 K. The average surface roughness (R a) of the AlN th
Autor:
Syuzo Fujiwara, Fumikazu Ikazaki
Publikováno v:
RESOURCES PROCESSING. 36:205-210
Publikováno v:
IEEE Transactions on Magnetics. 22:1785-1789
Railgun experiments have been made at National Chemical Laboratory for Industry (NCLI). Two types of railguns having 30 mm square bore and round bore of 14 mm in diameter were made. A pulse transformer was employed in a capacitor bank energy source s
Publikováno v:
Japanese Journal of Applied Physics. 26:2107
This paper describes two newly designed diamond-anvil cells. The first one, applicable to powder X-ray diffraction and optical measurements, employs a wedge-driven thrust mechanism for pressure generation. This mechanism enables the fine control of t