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論文
2 次元検出器による内部ひずみ評価法
著者:
鈴木 賢治,Kenji SUZUKI,菖蒲 敬久,Takahisa SHOBU,城 鮎美,Ayumi SHIRO,豊川 秀訓,Hidenori TOYOKAWA
発刊日:
公開日:
キーワードタグ:
An area detector technique has to be applied to the strain scanning method for materials with coarse grains. A new rotating slit system was designed for a 2-dimensional (2D) detector strain scanning method. The rotating slit system can focus the 2D detector on the center of the goniometer, and the gauge volume is made by the rotating slit system. The stress measurements were examined with the rotating slit and 2D detector. The measured diffraction spots shifted for the 2D strain scanning. The magnitu...
英字タイトル:
Evaluation of Internal Stresses using Area Detectors
論文
ステンレス鋳鋼配管における超音波伝播シミュレーション
著者:
坂本 一信,Kazunobu SAKAMOTO,古川 敬,Takashi FURUKAWA,古村 一朗,Ichiro KOMURA,上山 芳教,Yoshinori KAMIYAMA,三原 毅,Tsuyoshi MIHARA
発刊日:
公開日:
キーワードタグ:
It is well known that volumetric inspection by ultrasonic testing for cast austenitic stainless steel (CASS) piping, which is extensively used in primary loop of Japanese pressurized water reactors (PWR), is challenging due to unexpected beam skewing, dispersion and attenuation by its coarse and anisotropic crystal structures resulted from manufacturing process. The miss or false calling of the flaws and the deterioration of sizing performance are of great concerns in the ultrasonic testing for the ma...
英字タイトル:
Simulation of Ultrasonic Wave Propagation in Cast Austenitic Stainless Steel Piping
論文
原子力発電所における検査計画の 基本的立案方法に関する考察
著者:
青木 孝行,Takayuki AOKI,高木 敏行,Toshiyuki TAKAGI
発刊日:
公開日:
キーワードタグ:
For creating an inspection plan for industrial plants like nuclear power plants, it is necessary to have a well-grounded basis. Therefore, this paper proposes a method for determining the following three elements of such a plan: the equipment to be inspected, the inspection method to be adopted, and the timing of its implementation using a scientific approach. The key idea is to analyze the components of the plan by employing the understanding of cancer detection and diagnosis in medical science and a...
英字タイトル:
Discussion of In-service Inspection Planning for Nuclear Power Plants
論文
異種材溶接継手の残留応力解析
著者:
鈴木 賢治,Kenji SUZUKI,山岸 葵,Aoi YAMAGISHI,西川 聡,Satoru NISHIKAWA,菖蒲 敬久,Takahisa SHOBU
発刊日:
公開日:
キーワードタグ:
In this study, a residual stress distribution in a dissimilar plate butt-welded joint was simulated by a thermo-elastic finite element method. The base metal was the austenitic stainless steel SUS316L. The other base metal was nickel super-alloy NCF600, and the weld metal was the alloy 82 (YNiCr-3). The dimensions of the plate butt-welded joint were a width of 200 mm, a length of 250 mm and a thickness of 25 mm. The welding joint was fabricated by TIG welding with 22 passes. For comparison, the residu...
英字タイトル:
Residual Stresses in Dissimilar Metal Joint by Multi-pass Welds
論文
高速炉用 9Cr フェライト系耐熱鋼における溶接 HAZ 部の組織解析
著者:
岩田 満直,Mitsunao IWATA,杉山 雄一,Yuichi SUGIYAMA,村田 純教,Yoshinori MURATA,高屋 茂,Shigeru TAKAYA
発刊日:
公開日:
キーワードタグ:
State of microstructure in metallic materials can be expressed as numerical values based on a concept of system free energy, and the energy value is used as a measure of damage analysis of the materials. In this study, change in the system free energy of the FG-HAZ in 9Cr heat resistant ferritic steels during creep is evaluated as summation of chemical free energy, strain energy and surface energy, which are obtained by a series of experiments, i.e., chemical analysis using extracted residues, X-ray d...
英字タイトル:
Microstructural analysis of HAZ in the welded joints of 9Cr heat resistant ferritic steels for fast reactor
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