Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Sato, Akira*; Fukahori, Daisuke*; Sugawara, Katsuhiko*; Sawada, Atsushi; Takebe, Atsuji*
Advances in X-ray Tomography for Geomaterials, p.315 - 321, 2006/09
The two dimensional (2D) diffusion tests with the rock sample which has single plane crack were conducted, and the diffusion of non-sorbing tracer from the crack to rock matrix is visualized by X-ray CT in this study. It was found that the increment of CT value due to the 2D diffusion of the dense tracer from crack surface to the matrix of rock sample was observed. It was also found that the application of image processing techniques makes it possible to obtain the clear image data and that the precious analysis of diffusion phenomena becomes possible. The numerical simulation was also conducted in order to verify the experimental results. The results of 2D diffusion tests show good agreement with the numerical results, and the applicability of X-ray CT to the analysis of diffusion phenomena in a rock sample was verified together with the necessary image processing techniques.
Sato, Akira*; Fukahori, Daisuke*; Sugawara, Katsuhiko*; Sawada, Atsushi; Takebe, Atsuji
no journal, ,
no abstracts in English
Sato, Akira*; Fukahori, Daisuke*; Sugawara, Katsuhiko*
no journal, ,
no abstracts in English
Murakami, Nozomu*; Kirimura, Kazuki*; Yamaji, Kazuya*; Sato, Daisuke*; Watanabe, Seiichi*; Sato, Daiki*; Furumoto, Kenichiro*; Yamashita, Shinichiro; Fukahori, Tokio
no journal, ,
The SiC/SiC composite has lower thermal conductivity than current Zry cladding, and it is necessary to raise a gap between the pellet and the cladding to prevent their contact from the viewpoint of pellet integrity. In the presentation, it will be reported that the effect of reduction of cladding diameter and hollow pellet on the temperature and the reactivity of the core.
Sato, Daiki*; Watanabe, Seiichi*; Komiyama, Daisuke*; Furumoto, Kenichiro*; Okamoto, Michiaki*; Yamato, Masaaki*; Yamashita, Shinichiro; Fukahori, Tokio
no journal, ,
It is expected that SiC cladding tube has high corrosion resistance and high strength under LOCA condition in existing PWR. There is little data for SiC cladding tube in the high temperature environment. So the apparatus which was capable of testing at LOCA simulated condition was manufactured for SiC cladding tube. The modified LOCA test was carried out for investigating the behavior of SiC cladding tube.