巻号一覧
39 巻 (2001)
- 6 号 p. 328-
- 5 号 p. 274-
- 4 号 p. 194-
- 3 号 p. 148-
- 2 号 p. 82-
- 1 号 p. 3-
前身誌
39 巻, 6 号
選択された号の論文の3件中1～3を表示しています
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＜論文＞
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神谷 篤志, 江沼 数志, 堀口 誠志, 宮崎 正治, 久保山 孝治, 堀野 聡, 中谷 一郎, 伊藤 直行, 此島 信幸, 浅見 潤原稿種別: その他
専門分野: その他
2001 年 39 巻 6 号 p. 328-336
発行日: 2001年
公開日: 2003/01/31
ジャーナル フリーThe coefficient of linear thermal expansion of 36% Ni steel is approximately 1/10 of that of austenitic stainless steel SUS304. The membrane of LNG inground storage made of 36% Ni steel would contribute to reduce the construction cost because it is simple structure.
The following 5 subjects on 36% Ni steel have been studied to apply to the actual LNG inground storage.
(1)physical and mechanical properties
(2)welding characteristics
(3)mechanical properties of welding joint
(4)corrosion characteristics
(5)structure of 36% Ni steel membrane
According to these studies, we conclude that no technical concern will be anticipated on membrane made of 36% Ni steel.抄録全体を表示PDF形式でダウンロード (580K) -
長野 真康, 宮沢 健博, 三上 康朗, 金谷 研, 新岩 吉昭原稿種別: その他
専門分野: その他
2001 年 39 巻 6 号 p. 337-344
発行日: 2001年
公開日: 2003/01/31
ジャーナル フリーThis paper describes the effects of compressive pre-strain on susceptibility to liquid zinc induced cracking of 590MPa class steels. It was reported by the authors that liquid zinc induced crackings occurred, in some cases, at the toes of fillet welds between 590MPa class steel tubes and ring-plates during a hot-dip galvanizing. The mechanism could be explained with plastic compressive bending moment due to the temperature difference between the tube and the ring-plate at the initial stage of the galvanizing. As the temperature difference decreased with a time elapsed, the bending moment decreased to convert compressive stress to tensile stress. Zinc induced cracking could occur under tensile stress. There have been neither experimental data nor testing methods so far to refer to the effects of the compressive pre-strain on susceptibility to liquid zinc induced cracking. In this research, critical strains for crack initiation (εc) of several 590MPa class steels with some compressive pre-strain were measured by a newly developed testing method. The compressive pre-strain(εp) has an effect to lower the value of εc. And also, the tensile deformation rate (V) and Carbon Equivalent for Zinc induced cracking (CEZ) correlate well with the value of εc respectively. As a result, εc can be estimated from the parameters of εp, V and CEZ. These results will be useful information to prevent liquid zinc induced cracking in pipe structures.抄録全体を表示PDF形式でダウンロード (930K) -
島川 貴司, 末園 暢一, 碓井 志典, 福田 嘉男, 笠原 直人原稿種別: その他
専門分野: その他
2001 年 39 巻 6 号 p. 345-357
発行日: 2001年
公開日: 2003/01/31
ジャーナル フリーElevated Temperature Design Standards have been developed in many countries to be applied for the designing of components operated at high temperature such as fossil power plant, petroleum plant and fast breeder reactor. Dominant failure mode considered in these components is creep-fatigue crack initiation under cyclic thermal stress at elevated temperature. It is important to develop the estimation methods for strain behavior and strength under the nonlinear conditions to perform a rational design. This paper presents a comparison among creep-fatigue life prediction methods in representative design codes such as ASME Sec. III-NH in USA, BDS and DDS in Japan, R5 in UK and RCC-MR in France.抄録全体を表示PDF形式でダウンロード (874K)
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