148件が見つかりました。

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第6回
SSA 法による動的機器の診断
著者:
出町 和之,Kazuyuki DEMACHI,水口 明,Akira MIZUGUCHI
発刊日:
公開日:
キーワードタグ:
In this study, the prediction method for time-series data was developed and its validity was verified by the comparison of the measured time-series and the predicted one. The measured time-series data was obtained as the laser displacemen t meter's output observing the human's chest movement during breathing. The Singular Spectral Analysis method (SSA) was applied as the prediction analysis method. The comparison showed good agreement of the measured and the predicted ones....
英字タイトル:
Diagnosis of Dynamic Equipments by SSA Method
第6回
SUS304 鋼のクリープ変形における強磁性相生成のPhase-field シミュレーション
著者:
塚田 祐貴,Yuhki TSUKADA,白木 厚寛,Atsuhiro SHIRAKI,村田 純教,Yoshinori MURATA,森永 正彦,Masahiko MORINAGA,高屋 茂,Shigeru TAKAYA,小山 敏幸,Toshiyuki KOYAMA
発刊日:
公開日:
キーワードタグ:
The formation of the ferromagnetic a phase during creep deformation in SUS304 steel was simulated by a hase-field method. In order to consider the precipitation and growth of the phase simultaneously, we have onstru cted a model based on experimental results. In this model, strain energy stored near M23Co carbide uring creep deformation increases the driving force for precipitation of the a phase. This strain energy is stimated on the basis of distribution function of dislocation density in space near the ...
英字タイトル:
Phase-field simulation on the formation of ferromagnetic phaseduring creep deformation in SUS304 steel
第6回
Temperature Water by In-situ Electrochemical Techniques
著者:
Qunjia Peng, Yoichi Takeda, Jiro Kuniya, Tetsuo Shoji
発刊日:
公開日:
キーワードタグ:
In order to improve the understanding of the effect of dissolved hydrogen (DH) on the property of oxide film in high temperature water, the electronic properties of the oxide film on Alloy 600 in hi gh temperature water under various levels of DH were studied by contact electric resistance (CER) technique and electrochemical impedance spectroscopy. The results showed that the oxide film exhibit ed n-type semiconductivity. The film resistance, charge transfer resistance and ionic defect transport resistance...
英字タイトル:
Investigation of the Effect of Dissolved Hydrogen on the Oxide Film on Alloy 600 in HighTemperature Water by In-situ Electrochemical Techniques
第6回
The anodic behavior of alloy 690 in simulated PWRs primary water at 290℃
著者:
Tichun Dan, Kazuhko Sakaguchi, Zhanpeng Lu, Tetsuo Shoji,Jianqiu Wang, Eenhou Han, Wei Ke
発刊日:
公開日:
キーワードタグ:
This study investigates the anodic behavior of Alloy 690 thermal treated (TT) in Pressurized Water Reactors (PWRs) primary water at 290°C, 9 MPa by means of polarization measurement, electrochemical impedance spectroscopy (EIS) and X-ray photoelect ron spectroscopy (XPS) analysis. Experimental results of hydrogen charged and uncharged Alloy 690TT show that hydrogen increases anodic steady current density and decreases capacitance loop, which implies that charged hydrogen changes the electroch emical proces...
英字タイトル:
?The anodic behavior of Alloy 690 in simulated PWR primary water at 290°C
第6回
αホットセル排気弁の運転中保全手法の確立
著者:
水越 保貴,Yasutaka MIZUKOSHI,櫛田 尚也,Naoya KUSHIDA
発刊日:
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キーワードタグ:
On a-tight hot cell under ventilating that has containment capability of nuclear materials, a safe and efficient maintenance method of exhaust valves which controlled negative pressure in hot cell was established at Fuels Monitoring Facility, Oarai Research and Development C enter, Japan Atomic Energy Agency.The hot cell which required the exhaust valve maintenance needed to stop the ventilating during maintenance work because the valves could not be removed from operating exhaust system. And it was made k...
英字タイトル:
Establishment of maintenancemethod of exhaust valve ona-tight hot cell underventilating condition
第6回
「もんじゅ」の運転再開に向けた設備健全性確認と保全プログラム
著者:
仲井 悟,Satoru NAKAI,向 和夫,Kazuo MUKAI
発刊日:
公開日:
キーワードタグ:
The sodium leak accident in a secondary main cooling system of prototype fast breeder reactor Monju was occurred on December gth in 1995, and the Monju has stopped for 14 years since that. The confirmation of Monju systems and components integrity toward early restart of Monju was planned and started in 2006. The plan consists of inspection of components including repair, renewal and improvement and systems tests. About 90% of the integrity confirmation was comp leted at the end of May 2009. The integrity ...
英字タイトル:
Confirmation of Monju systems and components integrity and Maintenance Program toward Monju restart
第6回
き裂進展モニタリングを目指した斜角電磁超音波－渦電流複合プローブの提案
著者:
内一 哲哉,Tetsuya UCHIMOTO,高木 敏行,Toshiyuki TAKAGI,浦山 良一,Ryoichi URAYAMA
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キーワードタグ:
The authors have proposed a novel probe combining angle beam EMAT (Electro magnetic Acoustic Transducer) and EC (Eddy Current) Probe as a multi-probe with simple structure. In this paper, the structure of the above dual pro be is improved in order to increase sensitivity of the probe as EC probe....
英字タイトル:
Proposal of EMAT-EC Dual Probe for Monitoring of Crack Propagation
第6回
その場計測による回転機のモニタリング
著者:
宇佐美 照夫,Teruo USAMI,小島 史男,Fumio KOJIMA
発刊日:
公開日:
キーワードタグ:
This study reports the development of automatic condition monitoring techniques and system. The techniques and the system have been developed to test industrial motors by their sound signals. In this study, several kinds of defects in motor can be detected using monitoring techniques. The programs make possible to compute diagnostic algorithm and to practice judgments correctly. This new condition monitoring method will be tested in some plant s and will be also applied to preventive maintenance for not on...
英字タイトル:
Monitoring of Rotating Machine in Plants
第6回
もんじゅのアクシデントマネジメントレビュー
著者:
井上 正明,Masaaki INOUE,遠藤 寛,Hiroshi ENDO,伊東 智道,Tomomichi ITO
発刊日:
公開日:
キーワードタグ:
JNES reviewed the accident management for the prototype fast breeder reactor Monju prepared by JAEA according to the direction of NISA. The validity of the accident management for Monju was evaluated from several view points; necessary conditions for t he achievement, the suitability of the event sequences applied by the measures, and the effect on the safety function and eval uation. In this paper, the evaluation of the influence of each accident management measures on the safety function is reported....
英字タイトル:
Accident Management Review of the Fast Breeder Reactor Monju
第6回
アクセス不能構造物における弾性波伝播解析による弾性波強度指標評価の試み
著者:
石田 仁志,Hitoshi ISHIDA,飯井 俊行,Toshiyuki MESHII
発刊日:
公開日:
キーワードタグ:
This study details the results of a trial supporting the development of an ultrasonic testing system capable of detecting target flaw-reflected waves by means of simulation, through the use of elastic wave propagation analysis, the phenomenon of propagation of elastic waves that are input into a structure by an ultrasonic testing system, reflected by flaws, and then propagated throughout the structure. Attaining this goal requires elastic wave propagation analysis that simulates elastic wave intensity by ...
英字タイトル:
A Trial to Evaluate Elastic Waves Intensity Parameter on Inaccessible structurewith Finite Element Elastic Waves Propagation Analysis
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