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Muramatsu, Toshiharu; Sato, Yuji; Kamei, Naomitsu; Aoyagi, Yuji*; Shobu, Takahisa
Nihon Kikai Gakkai Dai-13-Kai Seisan Kako, Kosaku Kikai Bumon Koenkai Koen Rombunshu (No.19-307) (Internet), p.157 - 160, 2019/10
no abstracts in English
Muramatsu, Toshiharu; Aoyagi, Yuji*; Yoshiuji, Takahiro*
Nihon Kikai Gakkai 2017-Nendo Nenji Taikai Koen Rombunshu (DVD-ROM), 4 Pages, 2017/09
A general-purpose three-dimensional thermohydraulics numerical simulation code SPLICE was developed at Japan Atomic Energy Agency and designed to deal with gas-liquid-solid consolidated incompressible viscous flows with a phase change process in various laser applications, such as welding, coating, cutting, etc. The result obtained from metal powder laser additive manufacturing simulations is very encouraging in the sense that the SPLICE code would be used as one of efficient tools to provide the laser irradiation conditions.
Muramatsu, Toshiharu; Aoyagi, Yuji*; Yoshiuji, Takahiro*
no journal, ,
no abstracts in English
Sato, Yuji; Kamei, Naomitsu; Shobu, Takahisa; Aoyagi, Yuji*; Muramatsu, Toshiharu
no journal, ,
no abstracts in English
Muramatsu, Toshiharu*; Kamei, Naomitsu*; Aoyagi, Yuji*; Kitagawa, Yoshihiro; Shobu, Takahisa; Ozono, Shinji*
no journal, ,
no abstracts in English
Kisohara, Naoyuki; Aoyagi, Yuji*; Taguchi, Toshihiro
no journal, ,
Decontamination technologies, which remove radioactive substances from material surfaces, are significant to reduce radioactive wastes and recycle materials in decommissioning. Laser decontamination provides advantages such as remote processing and less produced secondary waste. The JAEA's experimental study has revealed that high-power density and high-speed Laser scanning irradiations achieve high decontamination efficiency by surface metal vaporization. The JAEA's computer code has been used to understand the phenomena induced by laser heating. This computer code has physical models including thermal conduction, metal melting, vaporization and radiation. The transient calculation is applied to simulate moving heat source by Laser scanning. The computer results have clarified surface melting, vaporization and solidification, explaining the relation between measured delamination depth and Laser irradiation conditions well.
