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Proceedings Paper

Rule-based software tool to specify the manufacturing process parameters for a contoured EB-PVD coating
Author(s): William C. S. Weir; Richard D. Sisson Jr.; Sudhangshu Bose
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Paper Abstract

A rule-based design software tool has been developed to specify the manufacturing process parameters to fabricate a contoured electron beam physical vapor deposited (EB-PVD) partially stabilized zirconia (PSZ) thermal barrier coating (TBC) on a curved surface. The expert data for this tool was developed from model predictions based on an experimentally verified, theoretical model of coating deposition rates as a function of position in the PVD vapor cloud (Knudsen cosine law). The predictive model was used for a wide variety of process parameters, including shadowing and non-uniform angular rotational velocity, to develop a database of contoured coating profiles (forward chaining). A coating profile matching routine was developed to identify the process parameters that yield a coating profile that matches the designers coating profile. The focus of this presentation will be on the software tool with emphasis on the expert database development and the coating thickness profile matching for a curved surface.

Paper Details

Date Published: 13 October 2000
PDF: 8 pages
Proc. SPIE 4192, Intelligent Systems in Design and Manufacturing III, (13 October 2000); doi: 10.1117/12.403664
Show Author Affiliations
William C. S. Weir, Worcester Polytechnic Institute (United States)
Richard D. Sisson Jr., Worcester Polytechnic Institute (United States)
Sudhangshu Bose, Pratt & Whitney (United States)

Published in SPIE Proceedings Vol. 4192:
Intelligent Systems in Design and Manufacturing III
Bhaskaran Gopalakrishnan; Angappa Gunasekaran, Editor(s)

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