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Ceramic Coating Edge Failure due to Thermal Expansion Interference PUBLIC ACCESS

[+] Author Affiliations
Herman A. Nied

Advanced Manufacturing Technology Associates, Ballston Lake, NY

Paper No. 97-GT-410, pp. V004T14A057; 6 pages
doi:10.1115/97-GT-410
From:
  • ASME 1997 International Gas Turbine and Aeroengine Congress and Exhibition
  • Volume 4: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; IGTI Scholar Award
  • Orlando, Florida, USA, June 2–5, 1997
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7871-2
  • Copyright © 1997 by ASME

abstract

An investigation of thermal barrier coatings on a metal substrate was conducted when the assembly was subjected to both thermal beating and mechanical edge loads generated by interference in adjoining expansion gaps. Both finite element and closed form solution models were developed and compared. The results of the analyses predict that the application of both thermal and mechanical edge loads on the edge of ceramic/metal composites can produce severe local edge spallation in the ceramic coating when an inadequate expansion gap is provided.

Copyright © 1997 by ASME
This article is only available in the PDF format.

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