巻号一覧
後続誌
17 巻, 5 号
選択された号の論文の7件中1～7を表示しています
- |<
- <
- 1
- >
- >|
-
田中 茂也1975 年 17 巻 5 号 p. 211-216
発行日: 1975/05/30
公開日: 2010/04/19
ジャーナル フリーPDF形式でダウンロード (401K) -
山中 千代衛1975 年 17 巻 5 号 p. 217-222
発行日: 1975/05/30
公開日: 2010/04/19
ジャーナル フリーPDF形式でダウンロード (2580K) -
照射欠陥の性質を中心にして奥田 重雄1975 年 17 巻 5 号 p. 223-232
発行日: 1975/05/30
公開日: 2010/04/19
ジャーナル フリーRecent development in the study of radiation-induced defects in B.C.C. metals is discussed, with particular reference to the fundamental aspects of the problem. The subjects treated include the rate of point-defect generation and its saturation, point-defect recovery and changes in mechanical properties directly related thereto. A critical study has been made of the stage I defects through internal friction measurements and examination of the resulting data on the Snoek peak and dislocation pinning phenomena, which revealed unexpectedly low values for the energy of free migration of interstitials in W and Mo.抄録全体を表示PDF形式でダウンロード (653K) -
「欧文誌」投稿者のために吉田 正男1975 年 17 巻 5 号 p. 233-234
発行日: 1975/05/30
公開日: 2010/04/19
ジャーナル フリーPDF形式でダウンロード (141K) -
スケアードオフ・カスケードの最適化(動特性など)甲斐 常逸1975 年 17 巻 5 号 p. 240-249
発行日: 1975/05/30
公開日: 2010/04/19
ジャーナル フリーThe theory for a cascade of centrifuges described in the preceding report of the same general title is further developed.
First, equations describing the distributions of the flow and the mole concentration are derived from the material balance relations for a square cascade. Corresponding equations are next obtained to cover a squared-off cascade consisting of a series of square cascades. A computer program is outlined which makes it possible to obtain the shape of the most efficient squared-off cascade. The efficiency of the current form of squared-off centrifuge cascade with reflux pipes is found to be lower than obtainable with gaseous diffusion.
The efficiency can be improved by the adoption of a tapered squared-off cascade with centrifuges provided with eccentric cuts to take the place of reflux pipes. The dynamic characteristics are also discussed. Analysis of the start-up behavior reveals that the equilibrium time of the centrifuge cascade is much shorter than for a corresponding gaseous diffusion cascade, and that the mole concentration of the product rapidly rises to attain steady state condition. It is also found that even when the feed flow rate fluctuates, the mole concentration of the product is relatively stable. The effect of a centrifuge failure in the cascade is examined. The optimum mole concentration for the waste effluent discarded from the cascade is calculated from the viewpoint of cost.抄録全体を表示PDF形式でダウンロード (492K) -
石黒 亮二, 熊田 俊明, 杉山 憲一郎, 池崎 英二1975 年 17 巻 5 号 p. 250-254
発行日: 1975/05/30
公開日: 2010/04/19
ジャーナル フリーThe present paper describes the results of an experimental study of heat transfer to liquid sodium uniformly flowing across a heated circular cylinder. The measurements were carefully performed in the range of Reynolds number from 1, 200 to 11, 000 for Prandtl numbers of 0.0058 and 0.0073.
A comparison is made of the present results with the theoretical estimation obtained by Grosh and Cess under the assumption of potential flow field. The latter gives about 50% higher values of heat transfer coefficient in the range of Reynolds number covered.
As a result, it may be concluded that the assumption of potential flow field is inadequate for predicting the heat transfer rate even in the range of such low values of Prandtl number.抄録全体を表示PDF形式でダウンロード (268K) -
宮崎 則幸, 矢川 元基, 安藤 良夫1975 年 17 巻 5 号 p. 255-262
発行日: 1975/05/30
公開日: 2010/04/19
ジャーナル フリーThe present paper describes a finite element approach to the creep buckling analysis of a shallow spherical shell subjected to external pressure. This shell is assumed to be made of visco-elastic material, whose creep characteristics are represented by Voigt's 4-elements model. The incremental method is employed, and the stability of the equilibrium state obtained at individual time intervals is verified. By means of this method, we analyze not only the behavior of the pre-buckling state, but also the process of snap-through and the behavior in post-buckling state. It is also shown that snap-through buckling occurs after the lapse of a finite time, if the external pressure is larger than a certain critical value.抄録全体を表示PDF形式でダウンロード (371K)
- |<
- <
- 1
- >
- >|