A micro-mechanistic approach to lifing of thermal barrier coatings for gas turbine blades
A micro-mechanistic approach to lifing of thermal barrier coatings for gas turbine blades
A summary of progress made in micro-mechanistic approach to lifing of thermal barrier coatings for gas turbine blades. Aim is to develop a model for Thermal Barrier Coating lifetimes that predicts the physical changes occurring in terms of morphology and physical properties of the materials involved and combines these to predict failure lifetime under thermo-mechanical fatigue (TMF) conditions. A test matrix has been designed to isolate the effects of the various damage mechanisms and includes: (a) isothermal exposures, (b) Single step thermal exposures, (c) Thermal cyclic tests (d) a creep test and (e) TMF tests. The TMF testing uses a susceptor to produce representative temperature profiles as seen in service across the specimen. Initial results of the thickness of the Thermally Grown Oxide (TGO) layer are presented. A TMF test capability for TBCs that simulates conditions seen in service has been demonstrated.
thermo-mechanical fatigue, tmf, thermal barrier coating, tbc, thermally grown oxide, tgo, cmsx4
University of Southampton
Everitt, Stewart
feb53801-b349-4476-bc9d-a357c352ad10
15 March 2009
Everitt, Stewart
feb53801-b349-4476-bc9d-a357c352ad10
Everitt, Stewart
(2009)
A micro-mechanistic approach to lifing of thermal barrier coatings for gas turbine blades.
In,
University of Southampton Engineering Doctorate Yearbook 2009.
Southampton, UK.
University of Southampton.
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Book Section
Abstract
A summary of progress made in micro-mechanistic approach to lifing of thermal barrier coatings for gas turbine blades. Aim is to develop a model for Thermal Barrier Coating lifetimes that predicts the physical changes occurring in terms of morphology and physical properties of the materials involved and combines these to predict failure lifetime under thermo-mechanical fatigue (TMF) conditions. A test matrix has been designed to isolate the effects of the various damage mechanisms and includes: (a) isothermal exposures, (b) Single step thermal exposures, (c) Thermal cyclic tests (d) a creep test and (e) TMF tests. The TMF testing uses a susceptor to produce representative temperature profiles as seen in service across the specimen. Initial results of the thickness of the Thermally Grown Oxide (TGO) layer are presented. A TMF test capability for TBCs that simulates conditions seen in service has been demonstrated.
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Stewart_Everitt_Soton_EngD_Yearbook_2009.doc
- Author's Original
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Submitted date: 4 March 2009
Published date: 15 March 2009
Keywords:
thermo-mechanical fatigue, tmf, thermal barrier coating, tbc, thermally grown oxide, tgo, cmsx4
Organisations:
Engineering Mats & Surface Engineerg Gp
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Local EPrints ID: 65851
URI: http://eprints.soton.ac.uk/id/eprint/65851
PURE UUID: c0c01678-805a-4292-9646-42e1b8ada9ef
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Date deposited: 24 Mar 2009
Last modified: 13 Mar 2024 18:00
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Author:
Stewart Everitt
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