This paper describes the development of an online process control system for spraying thick thermal barrier coatings as part of a Brite Euram research project. In addition to the evaluation of the substrate temperature, a system for acoustic emission analysis for particle impact and for controlling crack propagation is developed. The procedure, the problems overcome, and the results obtained are described. Paper includes a German-language abstract.

acoustic emission analysis, crack propagation, process monitoring, thermal spray coating, thick thermal barrier coatings
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Copyright © 1999 Verlag für Schweißen und verwandte Verfahren DVS-Verlag GmbH. All rights reserved.
1999
ASM International
Topics
Crack propagation Thermal barrier coatings Thermal spray coating Acoustic emission testing
Issue Section:
On-line Diagnostics
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