ウエダ　ヨシオ   Ueda Yoshio   上田　良夫    所属   追手門学院大学  理工学部 電気電子工学科    職種   教授
言語種別	英語
発行・発表の年月	2015/09
形態種別	論文
査読	査読あり
標題	EFFECT OF SURFACE DAMAGE ON THERMAL RESPONSE OF TUNGSTEN MONOBLOCKS
執筆形態	共著・編著（代表編著を除く）
掲載誌名	FUSION SCIENCE AND TECHNOLOGY
掲載区分	国外
出版社・発行元	AMER NUCLEAR SOC
巻・号・頁	68(2),pp.433-437
著者・共著者	Yasufumi Tanaka,Heun Tae Lee,Yoshio Ueda,Masayoshi Nagata,Yusuke Kikuchi,Satoshi Suzuki,Yohji Seki
概要	In this study, surface damaged W monoblocks (melting and cracking) by a pulsed plasma gun and an e-beam devices were exposed to cyclic heat loads (simulating normal heat loads and slow transients) and pulsed heat loads (simulating ELMs) to observe the effects of surface damage on surface erosion and heat removal capability. Heat load tests simulating the normal heat load (10 MW/m(2), 10 sec, 300 cycles) and the slow transient (similar to 20 MW/m(2), 10 sec, 300 cycles) were performed by the e-beam. The surface morphology changes after the heat load tests were observed using laser sccaning microscopy and FE-SEM After e-beam irradiation of similar to 20 MW/m(2), the longitudinal cracks crossing over entire mono blocks appeared on the surfaces of all monoblocks. Recrystallization and additional crack formation were also observed on the surface
DOI	10.13182/FST15-109
ISSN	1536-1055/1943-7641