巻号一覧
36 巻 (1998)
- 6 号 p. 366-
- 5 号 p. 286-
- 4 号 p. 194-
- 3 号 p. 131-
- 2 号 p. 60-
- 1 号 p. 3-
前身誌
36 巻, 4 号
選択された号の論文の9件中1～9を表示しています
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水深11,000mへの挑戦和田 一育1998 年 36 巻 4 号 p. 194-202
発行日: 1998/07/25
公開日: 2010/08/05
ジャーナル フリーJapan Marine Science and Technology Center has been constructing for the development of the 11, 000m depth class ROV “KAIKO” system. The final sea trial of full depth diving carried out on March at Mariana Trench. The “KAIKO” went down to the 2m altitude from the bottom, and cruised the 10, 909m depth. But, the data communication link was interrupted. We thoroughly investigated the cause of the trouble by postponing the sea trial. We pinpointed the problem and were improved on the secondary cable. The sea trial were restarted in February 1995, and the “KAIKO” touched the bottom of the trench.抄録全体を表示PDF形式でダウンロード (7268K) -
天谷 喜一, 清水 克哉, 川井 昭1998 年 36 巻 4 号 p. 203-209
発行日: 1998/07/25
公開日: 2010/08/05
ジャーナル フリーRecent experimental techniques of producing extreme conditions of ultrahigh pressure at very low temperature and also of measuring magnetic and electrical properties of matters are described. The pressure tool shown in this article is limited on diamond anvil cell (DAC), as the DAC is almost unique for assembling on 3He/4He dilution refrigerator and producing the highest pressure exceeding 100GPa at 50mk. Electrical and magnetic measurements for samples confined in DAC is difficult because of the extremely small size (-10-8cc). Recent development of the measuring techniques is also discussed and the electrical resistance measurement of solid oxygen under pressure of 120GPa, in which the superconductivity appears at low temperature of 0.6K, is given as an example.抄録全体を表示PDF形式でダウンロード (858K) -
製造および圧力逃がし装置山本 栄一, 芳賀 基, 武田 鐵次郎, 山本 健司, 山田 雅人1998 年 36 巻 4 号 p. 210-216
発行日: 1998/07/25
公開日: 2010/08/05
ジャーナル フリーJapan Pressure Vessel Council, JPVRC was asked to review the draft of ASME Code Sec. III Div. 3, Alternative Rules for Construction of High Pressure Vessels, from ASME Code Main Committee. The working group of JPVRC submitted to the Committee comments for the requirements of Div. 3 ASME on December 1996. The first edition of Div. 3 in which the comments were refered was published on May 1997.
The remarkable requirements of Div. 3 compared with those of Div. 2 were summarized in the first paper on General Requirements and Material Requirements, and in the second paper on Design Requirements.
This paper summarizes the requirements on Fabrication Requirements and Pressure Relieving Devices.抄録全体を表示PDF形式でダウンロード (821K) -
曲げ試験におけるき裂進展伊木 聡, 川原 正言, 河野 武亮, 関根 和喜, 日向 直之1998 年 36 巻 4 号 p. 217-224
発行日: 1998/07/25
公開日: 2010/08/05
ジャーナル フリーRecently, many papers are reported about safety of steel structures suffered from large earthquakes. Especially in Petroleum storage tank, extensive efforts are required to establish an estimation technique of the fracture behavior and the criterion of maintenance under cyclic plastic strains so as to prevent or minimize fatal accidents.
Although it is thought, the shell-annular joint of Petroleum storage tank, there are affected several percentage of plastic strains by large moment under the earthquake, characteristics of fatigue in such as ultra low cycle, especially, about crack propagation life studies are rarely done.
This paper makes an application of an approximate method to evaluate crack growth rates under cyclic large plastic bending tests. Proposed formula shows good prediction of crack growth rates both in alternative and repeated bendings.抄録全体を表示PDF形式でダウンロード (3775K) -
第1報: 減肉部を有する配管の曲げ強度と破壊挙動安 碩煥, 安藤 柱, 石渡 雅幸, 長谷川 邦夫1998 年 36 巻 4 号 p. 225-233
発行日: 1998/07/25
公開日: 2010/08/05
ジャーナル フリーIn pipes of energy plants, sometime, the local wall thinning may result from severe erosion-coroosion damage. However, effect of local wall thinning on strength and fracture behavior of pipe system were not well studied, systematically. And also allowable limit of the local wall thinning has not been developed for the pipe system.
In this paper, effect of depth, shape and location of local wall thinning on strength and failure mode of pipe subjected to bending were studied, systematically. The main results obtained are followings;
1) Observed failure modes were elephant foot type local buckling, ovalization, buckling+ovalization and cracking.
2) When Mpo≥MY, maximum moment Mmax, was evaluated by using new flow stress σtf proposed in this paper, conservatively.
3) When Mpo≥MY, except for craking, pipes with local wall thinning showed enough plastic rotation angle.
4) Generally speaking, fracture behavior of pipes with local wall thinning is different from that of cracked pipes.抄録全体を表示PDF形式でダウンロード (4145K) -
オールコンポジット CNG タンクニューハウス ノーマン, ティラー デェイル, 綱島 隆之1998 年 36 巻 4 号 p. 234-246
発行日: 1998/07/25
公開日: 2010/08/05
ジャーナル フリーLincoln Composites (LC), formerly a part of Brunswick Corporation, has been designing and developing composite structures for aerospace, defense, and commercial applications since 1963. LC began development of its all-composite NGV fuel container in 1990. Recognizing that cost, safety, schedule, and low weight were driving factors in the market acceptance of an NGV fuel container, LC chose to design a product with hybrid carbon/glass fiber reinforcement in an epoxy resin matrix and using a high density polyethylene (HDPE) liner. LC has been awarded patents for the boss/liner/composite interface design and for its TuffshellTM protection system. Current sizes range from 231mm to 467mm in diameter and up to 3meters in length. Operating pressures are 200bar and 240bar at 15°C. These containers meet current or proposed standards for NGV fuel containers including U. S. DOT's FMVSS 304, ANSI/AGA NGV 2, CSA B-51 Part 2, and ISO/DIS11439. Over 16, 000 NGV fuel containers manufactured by LC are currently in service. These are primarily used in North America, but full or conditional approvals have been obtained in 15 countries worldwide. These all-composite fuel containers ha established an excellent safety record, as they have excellent fatigue properties, are highly resistant to harsh environments, and they incorporate features to provide a high degree of damage tolerance.抄録全体を表示PDF形式でダウンロード (7276K) -
益本 和雄1998 年 36 巻 4 号 p. 247-251
発行日: 1998/07/25
公開日: 2010/08/05
ジャーナル フリーPDF形式でダウンロード (464K) -
西岡 信之1998 年 36 巻 4 号 p. 252-258
発行日: 1998/07/25
公開日: 2010/08/05
ジャーナル フリーPDF形式でダウンロード (743K) -
乙黒 靖男1998 年 36 巻 4 号 p. 259-271
発行日: 1998/07/25
公開日: 2010/08/05
ジャーナル フリーMany different steels are required for high temperature equipments and devices. Suitable temperature ranges vary with service conditions and kinds of steels. However, properties of the steels degrade during service under various environments.
Therefore, the degradation should be taken into consideration for application of the steels.
The degradation in service at elevated temperature consists of embrittlement during isothermal heating, creep damage, creep embrittlement, hydrogen attack, graphitization and etc..
This paper gives an outline of high temperature steels and the above mentioned degradation.抄録全体を表示PDF形式でダウンロード (2786K)
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