Application of Infrared Thermography in NDT of Plasma-Facing Components for Tokamaks
Plasma-facing components (PFCs), consisting of plasma-facing materials (PFMs) and heat sink, are the first wall facing directly tokamak plasma, subjected to high heat flux (HHF) and bombardment of particles from the high temperature plasma. The exposure to the HHF and particles may damage the structural integrity of PFCs and shorten their service lives significantly if the connection of PFMs to heat sink is not satisfactory. Suitable non-destructive testings NDTs) are thus necessary to evaluate the connection quality reliably. Infrared (IR) thermography has been used successfully in evaluating the connection by e-beam welding between CFC tiles and Cu alloy heat sink on the French tokamak Tore Supra, and now is being used for the similar connection on the German stellarator W-7X, and will be used for the International Thermonuclear Experimental Reactor (ITER) being built in France. Various types of IR thermography NDTs are now under development to test the PFCs before installation and to monitor them in-field between campaigns. The Experimental Advanced Superconducting Tokamak (EAST), one of Mega-Science Projects in China, will also employ the NDTs for inspection of its PFCs. In this report, to be presented is the R & D state of the art in the field in China and other countries.
IR thermography NDT Tokamak PFCs Nuclear Fusion
Pan QI Qiang LI GuangNan LUO
Institute of Plasma Physics, Chinese Academy of Sciences P. O. Box 1126, Hefei, 230031 China
国际会议
第十七届世界无损检测会议(17th World Conference on Nondestructive Testing)
上海
英文
1843-1850
2008-10-25（万方平台首次上网日期，不代表论文的发表时间）