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

Three-Dimensional Characterization of Cracks in a Columnar Thermal Barrier Coating System for Gas Turbine Applications

Dennstedt, Anne and Gaslain, Fabrice and Bartsch, Marion and Guipont, Vincent and Maurel, Vincent (2019) Three-Dimensional Characterization of Cracks in a Columnar Thermal Barrier Coating System for Gas Turbine Applications. Integrating Materials and Manufacturing Innovation, 8 (3), pp. 400-412. Springer. DOI: 10.1007/s40192-019-00150-7 ISSN 2193-9764

Full text not available from this repository.

Abstract

Thermal barrier coatings (TBC) are multilayered systems comprising a metallic oxidation protection layer or so-called bond coat, a ceramic topcoat, and a thermally grown aluminum oxide developing at the interface. The coating systems fail typically by delamination cracking near this interface, which has a complex three-dimensional morphology influencing the crack path. This study combines laser shock adhesion test to introduce an artificial interfacial crack, known in size and location, and focused ion beam coupled with scanning electron microscopy 3D serial sectioning tomography. Methods for proper segmentation of cracks and adjacent materials and quantitative evaluation of the complex crack system are proposed and applied for analyzing the crack tip region. Finally, derived from the three-dimensional segmentation, a finite element model has been achieved and used for thermal analysis highlighting the crucial role of local damage on thermal conductivity of the TBC.

Item URL in elib:https://elib.dlr.de/128756/
Document Type:Article
Title:Three-Dimensional Characterization of Cracks in a Columnar Thermal Barrier Coating System for Gas Turbine Applications
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Dennstedt, AnneAnne.Dennstedt (at) dlr.deUNSPECIFIED
Gaslain, FabriceCentre des Materiaux, Mines Paris Tech, CNRS UMR 7633, PSL Research UniversityUNSPECIFIED
Bartsch, MarionMarion.Bartsch (at) dlr.deUNSPECIFIED
Guipont, VincentCentre des Materiaux, Mines Paris Tech, CNRS UMR 7633, PSL Research UniversityUNSPECIFIED
Maurel, VincentCentre des Materiaux, Mines Paris Tech, CNRS UMR 7633, PSL Research UniversityUNSPECIFIED
Date:7 August 2019
Journal or Publication Title:Integrating Materials and Manufacturing Innovation
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:8
DOI :10.1007/s40192-019-00150-7
Page Range:pp. 400-412
Publisher:Springer
ISSN:2193-9764
Status:Published
Keywords:Thermal barrier coating (TBC), Laser shock adhesion test (LASAT), Focus ion beam (FIB), 3D imaging
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:propulsion systems
DLR - Research area:Aeronautics
DLR - Program:L ER - Engine Research
DLR - Research theme (Project):L - Virtual Engine and Validation methods
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Research > Experimental and Numerical Methods
Deposited By: Dennstedt, Dr. Anne
Deposited On:22 Oct 2019 14:46
Last Modified:14 Oct 2020 04:17

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.