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36 巻, 2 号
選択された号の論文の6件中1～6を表示しています
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秋山 守, 大橋 弘忠, 太組 健児, 篠原 慶邦, 広瀬 正史, 伴 博之, 粕谷 俊郎1994 年 36 巻 2 号 p. 103-111
発行日: 1994/02/28
公開日: 2010/03/08
ジャーナル フリーThe super-simulator is a conceptual name for future innovative simulators of nuclear power plants which surpass, to a large extent, the capabilities and performances of existing nuclear power plant simulators for operator training, plant analyzers for engineering studies or computer codes for dynamics analysis. Such super-simulators will be realized by employing highly advanced methods of mathematical modeling of the physical chemical and other related processes in the nuclear power plants and innovative methods of numerical computation using rapidly evolving high performance computing systems.抄録全体を表示PDF形式でダウンロード (599K) -
赤沼 篤夫1994 年 36 巻 2 号 p. 112-118
発行日: 1994/02/28
公開日: 2009/04/21
ジャーナル フリーPDF形式でダウンロード (561K) -
塗師 隆治, 飯田 孝夫, 池辺 幸正, 阿部 史朗1994 年 36 巻 2 号 p. 133-137
発行日: 1994/02/28
公開日: 2010/03/08
ジャーナル フリーThe authors evaluated the performance of an automatic counting for CN film etch-pits in large area as 1cmcm2 by an image processing method. Since the gray-level of the etch-pit image made from a fixed α-particle energy (_??_ 4MeV) is almost constant after shading correction processing, it is expected to get the same counts as manual counts by determining suitable threshold at binarization. The decrease of counts due to pile-up of the etch-pit image could be corrected by calculating the pile-up probability geometrically. Using the image processing method and the pile-up correction, they could get the same counts by automatic counting and manual counting methods for the etch-pits ranging 0-4, 000tracks/cmcm2 made from 2MeV α-particles and 0-1, 000tracks/cmcm2 obtained with cup radon monitors in various living environments.抄録全体を表示PDF形式でダウンロード (6056K) -
宇賀地 弘和, 石山 新太郎, 衛藤 基邦1994 年 36 巻 2 号 p. 138-145
発行日: 1994/02/28
公開日: 2009/04/21
ジャーナル フリーImpact tensile strength test was performed with two kinds of HTTR graphites, fine grained isotropic graphite, IG-11 and coarse grained near isotropic graphite, PGX and deformation and fracture behavior under the strain rate of over 100s-1 was measured and the following results were derived:
(1) Tensile strength for IG-11 graphite does not depend on the strain rate less than 1s-1, but over 1s-1, tensile strength for IG-11 graphite increase larger than that measured under 1s-1. At the strain rate more than 100s-1, remarkable decrease of tensile strength for IG-11 graphite was found. Tensile strength of PGX graphite does not depend on the strain rate less than 1s-1, but beyond this value, the sharp tensile strength decrease occurs.
(2) Under 100s-1, fracture strain for both graphites increase with increase of strain rate and over 100s-1, drastic increase of fracture strain for IG-11 graphite was found. (3) At the part of gage length, volume of specimen increase with increase of tensile loading level and strain rate.
(4) Poisson's ratio for both graphites decrease with increase of tensile loading level and strain rate.
(5) Remarkable change of stress-strain curve for both graphites under 100s-1 was not found, but over 100s-1, the slope of these curve for IG-11 graphite decrease drastically.抄録全体を表示PDF形式でダウンロード (6835K) -
武田 誠一郎, 永井 崇之, 小泉 務1994 年 36 巻 2 号 p. 146-157
発行日: 1994/02/28
公開日: 2010/01/07
ジャーナル フリーCorrosion performance of five types of construction materials was studied in actual reprocessing solutions prepared from FBR spent fuel. Immersed corrosion tests and electrochemical measurements were conducted with three kinds of solutions, namely dissolved solution, high active liquid waste (HAW), and pure nitric acid solution, for the purpose of comparing the corrosion effects on various alloys of each solution.
The corrosion rates of 310Nb or 304ULC tested in dissolved solution were higher than those tested in pure nitric acid, whereas Ti, Ti-5Ta or Zr did not show exact differences between those two kinds of solutions. Corrosion potentials of 310Nb, Ti-5Ta or Zr measured in dissolved solution were nobler than those measured in HAW.
The reason for these phenomena is thought to be due to an increase in cathodic reaction at the metals surface because of the presence of coexisting Pu in the solutions.抄録全体を表示PDF形式でダウンロード (6655K) -
1994 年 36 巻 2 号 p. 157
発行日: 1994年
公開日: 2009/04/21
ジャーナル フリーPDF形式でダウンロード (65K)
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