巻号一覧
29 巻 (1991)
- 6 号 p. 318-
- 5 号 p. 252-
- 4 号 p. 186-
- 3 号 p. 130-
- 2 号 p. 68-
- 1 号 p. 2-
前身誌
29 巻, 3 号
選択された号の論文の7件中1～7を表示しています
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秋山 宏1991 年 29 巻 3 号 p. 130-136
発行日: 1991/05/25
公開日: 2010/08/05
ジャーナル フリーTypical collapse modes of cylindrical storage tanks subjected to horizontal seismic motions are elephant-foot bulge at the lowest part of cylindrical wall and the fracture of bottom plate at the corner associated with up-lift of bottom plates.
On the other hand, the cylindrical tanks can develop considerable amount of energy absorption capacity until the collapse state of tank is reached.
The essential loading effect of earthquakes upon structures can be expressed in terms of energy.
By equating the energy input due to earthquakes to the energy absorption capacity of structure, a design criteria for cylindrical tanks can be derived on the basis of the ultimate strength.
In this paper, a recent advance in design criteria for cylindrical tanks is demonstrated.抄録全体を表示PDF形式でダウンロード (1900K) -
岩田 隆1991 年 29 巻 3 号 p. 137-144
発行日: 1991/05/25
公開日: 2010/08/05
ジャーナル フリーA state of the art earthquake sensing device called “SI-sensor” has been developed which would realize reliable system control during an major earthquake. To confirm the validity of the sensor further, Tokyo Gas has been conducting a long term observation project since 1985. The observation data analyses up until now show good prospect that the sensor could be used as a reliable shut-down sensing device for a wide range of industrial systems.抄録全体を表示PDF形式でダウンロード (668K) -
小林 信之1991 年 29 巻 3 号 p. 145-150
発行日: 1991/05/25
公開日: 2010/08/05
ジャーナル フリーThe sliding behavior of the cylindrical tanks was observed at past earthquakes. But there are few studies about the sliding behavior of tanks.
The objective of this study is to investigate the sliding behavior by the vibrational experiment using two types of the models without anchorage on the shaking table.
One is the rigid body model. The other is the elastic cylindrical tank model filled with water. These models are excited by increasing the exciting acceleration gradually until the sliding behavior is observed.
In the case of the rigid body model, the sliding is occured when the inertial force exceeds the Coulomb friction force. In the case of the elastic tank model, two kinds of the sliding patterns are observed. One is the parallel movement of the whole tank and the other is the rotation movement around the principle axis of the tank.
The parallel movement is observed when the inertial force exceeds the Coulomb friction force. This movement goes with the small rocking motion. The rotation movement is observed even though the inertial force is smaller than the Coulomb friction force. This movement goes with the large rocking motion. The results with a simplified rocking calculation model is compared with the test results, that is, the parallel movement and the rotation movement.抄録全体を表示PDF形式でダウンロード (662K) -
椹木 義淳1991 年 29 巻 3 号 p. 151-159
発行日: 1991/05/25
公開日: 2010/08/05
ジャーナル フリーVarious types of heat-resisting steels and alloys are in service as tube and pipe in high temperature section of power generation and chemical plants. For improving efficiency of the total system and for meeting requirements to cope with “dirty” fuels in some cases, these steels and alloys nowadays are being used in much severer conditions than before in terms of high temperature strength and corrosion resistance.
This paper describes the recent research and development trends of new heat-resisting steels and alloys for boiler tubes and pipes, fast breeder fuel cladding tubes, high temperature gas cooled reactor heat exchanger tubes and ethylene plant cracking tubes.抄録全体を表示PDF形式でダウンロード (2392K) -
松原 雅昭, 新田 明人, 桑原 和夫1991 年 29 巻 3 号 p. 160-169
発行日: 1991/05/25
公開日: 2010/08/05
ジャーナル フリーA coal-gasification combined-cycle plant requires high efficiency through high-temperature operation. For this purpose, it is necessary to develop such material for gas turbine that has excellent high-temperature strength and hot-corrosion resistance. This circumstance made us pay attention to the single crystal superalloy to be used for blade and vane.
This paper describes the result of experimental investigation on high-temperature strengths of two single crystal Ni-base superalloys, CMSX-2 and CMSX-4, followed by comparison with that of a directionally solidified superalloy, Mar-M247. Through the study, the authors demonstrated that single crystal superalloys were more excellent in high-temperature strength than a directionally solidified superalloy and that the specimens machined from solid blades showed the same high-temperature strengths as those from solid bars.
The authors also carried out high-temperature low-cycle fatigue tests of CMSX-2 with holding. CMSX-2 showed significant decreases in fatigue lives due to holding, especially in compressive holding tests. The results can be explained by using the frequency modified Ostergren's method.抄録全体を表示PDF形式でダウンロード (2968K) -
新田 明人1991 年 29 巻 3 号 p. 170-176
発行日: 1991/05/25
公開日: 2010/08/05
ジャーナル フリーIn Japan, about 60% of fossil power plants belong to the “old plant” which is defined as a plant operated over 100, 000 hours in the national guideline notified in 1987 for extending an interval of periodical inspection. Thus, their accurate remaining-life assessment is essential for life extension as well as rational periodical-inspection of the old fossil plants.
Under such conditions, a study on the development of remaining life assessment methods for steam turbine rotor and casing has been carried out in the Central Research Institute of Electric Power Industry (CRIEPI). This paper presents a few findings (e. g., the delectability of creep damage by the nondestructive methods applied in practical use) which were obtained from the CRIEPI's study. Also, current approaches of remaining life assessment in Japan are reviewed in this paper.抄録全体を表示PDF形式でダウンロード (773K) -
武藤 康1991 年 29 巻 3 号 p. 177-181
発行日: 1991/05/25
公開日: 2010/08/05
ジャーナル フリーResearch and developments on the structural design criteria for the very high temperature components envisaged for the nuclear and space applications are now undertaken in the U. S., Germany and Japan. The very high temperature means a temperature exceeding that prescribed in the ASME Boiler and Pressure Vessel Design Code Sec. III, Case N-47. The characteristics in the very high temperature structural design are explained. The state of the arts of research on creep constitutive equation, creep-fatigue damage evaluation, welded joint and component test mainly in JAERI is introduced.抄録全体を表示PDF形式でダウンロード (550K)
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