Development of laser lock-in thermography for plasma facing component surface characterisation

被引：5
|
作者：
Courtois, X. [1 ]
Sortais, C. [2 ]
Melyukov, D. [2 ]
Gardarein, J. L. [3 ]
Semerok, A. [2 ]
Grisolia, Ch. [1 ]
机构：
[1] CEA, IRFM, F-13108 St Paul Les Durance, France
[2] CEA, DEN, F-91191 Gif Sur Yvette, France
[3] Univ Aix Marseille 1, IUSTI, CNRS, UMR 65 95, Marseille, France
来源：
FUSION ENGINEERING AND DESIGN | 2011年 / 86卷 / 9-11期
基金：
欧盟地平线“2020”;
关键词：
Plasma facing component; Lock-in thermography; Laser;
D O I：
10.1016/j.fusengdes.2011.04.071
中图分类号：
TL [原子能技术]; O571 [原子核物理学];
学科分类号：
0827 ; 082701 ;
摘要：
Infrared (IR) photothermal techniques are candidates for in situ characterisation of tokamak plasma facing components (PFC) surfaces, by means of an external thermal excitation coupled with an IR temperature measurement. Among these techniques, the laser lock-in thermography (LLIT) uses a modulated laser excitation which gives 2 major advantages: enhancement of signal to noise ratio and emissivity independence, which is a plus when the components have various and unpredictable surface quality. With this method, it is possible to develop a process, which could be used remotely, either mounted onto an in situ inspection device (articulated arm) or in a PFC test bed. This paper presents the results obtained with a continuous modulated laser heat source on particular samples (W coating on CFC substrate, C layer on graphite substrate). The identification of the experimental data with a theoretical model allows a quantitative characterisation of the layers. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：1714 / 1718
页数：5
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