Abstract
The need for non-destructive inspection of the interface between carbon fibre composites (CFC) and copper is met by different thermographic inspection procedures. The most established one is transient thermography where the component is heated via the cooling system by introducing hot water. This method is applied on finished components containing a cooling system. A promising set-up is pulsed thermography where the component is heated externally by a single powerful flash of light. This method can be applied in any stage of production which enables the recognition of critical production steps. Results obtained from test bodies containing artificial defects demonstrate the defect resolution and the good reproducibility of this method. Since no reference element is needed the efficiency of inspection is raised to a level which is appropriate for industrial application. Finally, the rating of the first test series of W7-X divertor components shows excellent coincidence with the results obtained from high heat flux tests.
Published Version
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