E-1 Thermal Shock Failure in Tungsten-10%Rhenium by Laser Irradiation Method(Session: Thermal Fatique/Creep)
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概要
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X-ray target made of Tungsten-10%Rhenium (W-10%Re) using in CT-scan is subjected to severe thermal load induced by energetic electron beam shot when x-ray is generating. The intense thermal stress concentration is generated and is able to lead to thermal shock failure in this component. Thermal shock failure of Tungsten-10%Rhenium was experimentally and numerically studied in order to understand the thermal shock resistant and mechanism of failure. Laser irradiation method was used for thermal shock heat source. In the experimental study, disk shape specimen was radiated by laser beam at the top center. The energy from laser beam caused rapid heating inside laser irradiation area. Thermal shock failure was found in case of high power intensity. From Finite Element Method (FEM) analysis, the thermal shock failure mechanism was clarified. The shrinkage crack was generated during solidificatio process and behaved as an initial crack, which propagated to outside melted area.
- 一般社団法人日本機械学会の論文
- 2006-11-08
著者
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Sujatanond Supamard
Department Of Industrial Engineering Faculty Of Engineering Thammasat University
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Dai Zhi-jun
Department Of Mechanical Engineering Nagaoka University Of Technology:department Of Engineeingr Mech
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Mutoh Yoshiharu
Department Of Mechanical Engineering Nagaoka Univ. Of Technology
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Surapunt Supachai
Department of Industrial Engineering, Faculty of Engineering , Thammasat University
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Surapunt Supachai
Department Of Industrial Engineering Faculty Of Engineering Thammasat University
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MUTOH Yoshiharu
Department of Material Science, Nagaoka University of Technology
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