elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Contact | Deutsch
Fontsize: [-] Text [+]

Damage behavior of Thermal Barrier Coatings for gas turbine blades

Bartsch, Marion and Hernandez, Mercedes T. and Karlsson, Anette (2009) Damage behavior of Thermal Barrier Coatings for gas turbine blades. Seminar on Materials Science , 5. Juni 2009, Nagaoka, Japan.

Full text not available from this repository.

Abstract

The initiation of a class of fatigue cracks observed in thermal barrier coatings (TBCs) subjected to thermal gradient mechanical fatigue testing is investigated. The coating system is based on a NiCoCrAlY bond coat and a partially yttria stabilized zirconia top coat. To explain the development of the cracks of interest, the thermo-mechanical response of the bond coat and the thermally grown oxide (TGO) is examined and quantified through finite element analyses. The models include non-linear and time-dependent behavior such as creep, TGO growth stress, and thermo-mechanical cyclic loading. The simulations suggest that stress-redistribution due to creep can lead to tensile stresses in the TGO during TGMF testing that are large enough to initiate the cracks investigated.

Item URL in elib:https://elib.dlr.de/61356/
Document Type:Conference or Workshop Item (Speech)
Title:Damage behavior of Thermal Barrier Coatings for gas turbine blades
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Bartsch, Marionmarion.bartsch (at) dlr.deUNSPECIFIED
Hernandez, Mercedes T.University Delaware, U.S.A.UNSPECIFIED
Karlsson, AnetteUniversity Delaware, U.S.A.UNSPECIFIED
Date:5 June 2009
Refereed publication:No
Open Access:No
In DOAJ:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Thermal Barrier Coating System, EB-PVD, fatigue cracks
Event Title:Seminar on Materials Science
Event Location:Nagaoka, Japan
Event Type:Other
Event Dates:5. Juni 2009
Organizer:Prof. Masakazu Okazaki, Nagaoka University of Technology
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:other
DLR - Research area:Aeronautics
DLR - Program:L - no assignment
DLR - Research theme (Project):L - Low-Emission Air Traffic (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Research > Experimental and Numerical Methods
Deposited By: Bartsch, Dr.-Ing. Marion
Deposited On:03 Dec 2009 15:22
Last Modified:03 Dec 2009 15:22

Repository Staff Only: item control page

Browse
Search
Help & Contact
Information
electronic library is running on EPrints 3.3.12
Copyright © 2008-2017 German Aerospace Center (DLR). All rights reserved.