Internal Damage Accumulation and Imminent Failure of an Industrial Gas Turbine Blade: Interpretation and Implications PUBLIC ACCESS

[+] Author Affiliations
M. I. Wood

ERA Technology, Leatherhead, Surrey, England

Paper No. 96-GT-510, pp. V005T12A015; 7 pages
  • ASME 1996 International Gas Turbine and Aeroengine Congress and Exhibition
  • Volume 5: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; General
  • Birmingham, UK, June 10–13, 1996
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7876-7
  • Copyright © 1996 by ASME


The row 1 blade from a heavy industrial gas turbine has been examined after ∼21,000 fired hours to assess the level and nature of the damage originating from the cooling holes. This consisted primarily of creep cracking/voiding coupled with deep internal oxidation/nitridation.

The difficulties the manufacturer had in addressing the problem are discussed within the context of component assessment methodologies and the ‘new’ technologies which are being incorporatd into new unit types, but for which little service experience has yet been generated.

Copyright © 1996 by ASME
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