Zobrazeno 1 - 10
of 61
pro vyhledávání: '"Katsuyuki Ara"'
Characteristics of Barkhausen Noise Properties and Hysteresis Loop on Tensile Stressed Rolled Steels
Publikováno v:
Scopus-Elsevier
The rolled steels for welded structure applied tensile stress have been examined by means of magnetic Barkhausen noise (MBN) method and of a physical parameter obtained from a hysteresis loop. The behaviors of MBN parameters and coercive force with t
Publikováno v:
International Journal of Applied Electromagnetics and Mechanics. 33:1087-1094
This paper discusses a feasibility of magnetic flux leakage ( MFL) method for estimation of wall thinning on tube in nuclear power plant. A single magnetic yoke is fixed on the s pecimen, and then a magnetic field sensor scans the leakage field betwe
Publikováno v:
IEEE Transactions on Magnetics. 45:2744-2747
Low carbon steel specimens cold rolled at ratios of 0-40% have been examined comprehensively by means of magnetic Barkhausen noise (MBN) method and a physical parameter obtained from a hysteresis loop, and their microstructures were studied by a tran
Effect of pre-deformation on the precipitation process and magnetic properties of Fe–Cu model alloys
Autor:
Seiki Takahashi, Hiroaki Kikuchi, Katsuyuki Ara, Kenta Watanabe, Yusuke Tozawa, Yasuhiro Kamada, J. Echigoya, Satoru Kobayashi
Publikováno v:
Journal of Materials Science. 44:949-953
The effect of pre-deformation on the precipitation process and magnetic properties of Fe–Cu model alloys was investigated. These specimens simulate irradiation embrittlement of nuclear reactor pressure vessel (RPV) steels. Fe–1 wt%Cu alloys with
Autor:
Satoshi Takahashi, Katsuyuki Ara, Takuya Yamamoto, Satoru Kobayashi, Yasuhiro Kamada, G.R. Odette, Hiroaki Kikuchi, D. Klingensmith
Publikováno v:
Journal of Nuclear Materials. 384:109-114
Changes of magnetic minor hysteresis loops in pure Fe, Fe–1 wt% Mn, Fe–0.9 wt% Cu, and Fe–0.9 wt% Cu–1 wt% Mn model alloys after neutron irradiation have been studied. Minor-loop coefficients which are obtained from scaling relations between
Publikováno v:
Electrical Engineering in Japan. 165:1-7
A probe with a magnetic yoke for nondestructive evaluation of mechanical properties was developed. This probe can evaluate the magnetic properties of ferromagnetic materials without machining them to a ring core or frame core shape, that is, it can p
Autor:
Katsuyuki Ara, Satoru Kobayashi, G.R. Odette, Hiroaki Kikuchi, Takuya Yamamoto, D. Klingensmith, Satoshi Takahashi, Yasuhiro Kamada
Publikováno v:
Philosophical Magazine. 88:1791-1800
Magnetic minor hysteresis loops have been measured on A533B-type nuclear reactor pressure vessel steels with various combinations of Cu and Ni contents after neutron irradiation to a fluence up to 3.32 × 1019 n cm−2. A strong compositional depende
Autor:
Katsuyuki Ara, Hiroaki Kikuchi, Satoshi Takahashi, K. Chiba, Satoru Kobayashi, Yasuhiro Kamada
Publikováno v:
Philosophical Magazine. 87:4047-4058
We have measured magnetic minor hysteresis loops of neutron-irradiated Fe–Cu–Ni–Mn model alloys with variable combinations of Cu and Ni contents. It was revealed that minor-loop coefficients which are in proportion to internal stress decrease a
Autor:
Mamoru Harada, Yasuhiro Kamada, Satoru Kobayashi, Katsuyuki Ara, Seiki Takahashi, Hiroaki Kikuchi
Publikováno v:
Journal of Materials Processing Technology. 181:190-193
Since magnetic properties of ferromagnetic steels have a good correlation with their mechanical properties, those mechanical properties will be evaluated by magnetic measurements. An apparatus for measurement of BH curves of Charpy impact test pieces
Autor:
Ayako Kubota, Seiki Takahashi, Katsuyuki Ara, Satoru Kobayashi, Yasuhiro Kamada, Hiroaki Kikuchi
Publikováno v:
Journal of Materials Processing Technology. 181:199-202
We have analyzed a set of minor hysteresis loops of Fe alloys with 0.3 wt.% Cu in the isothermal aging at 773 K to elucidate the influence of copper precipitation on magnetic property. We found that the magnetic coefficients of minor loops take a max