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

Local strain response of a TBC system under thermal mechanical loading by in-situ synchrotron X-ray Diffraction

Bartsch, Marion and Wischek, Janine and Meid, Carla and Knipe, Kevin and Manero, Albert and Sofronsky, Stephen and Raghavan, Seetha and Lacdao, Claudine and Karlsson, Anette M. and Okasinski, John and Almer, Jonathan (2016) Local strain response of a TBC system under thermal mechanical loading by in-situ synchrotron X-ray Diffraction. HELSMAC - Helmholtz Symposium on Materials and Coatings for High Temperatures, 07.-08. April 2016, Cambridge, Großbritannien.

Full text not available from this repository.

Official URL: http://www.ccg.msm.cam.ac.uk/initiatives/helsmac/talk-no-10-by-marion-bartsch/view

Abstract

For stress analyses and lifetime assessments of TBC-systems, it is necessary to know the mechanical properties of each constituent, depending on the temperature and stress state. For determining comprehensive temperature- and stress-dependent mechanical properties of the thin layers of an EB-PVD coating, local strains were measured by means of high energy X-ray diffraction. Tubular coated specimens were loaded with systematically varying thermal and mechanical loads, while recording the strains in situ. Test parameters were surface temperature, applied mechanical load, and heat flux through the specimens’ wall, the latter controlled by internal cooling of the tubular specimen. The topcoat surface was heated by infrared radiation up to 1000°C. For capturing ageing effects associated with microstructural evolution, e.g. due to sintering or oxidation, a pre-aged specimen was investigated besides such in as-coated condition. Exemplary results of the investigations are residual strain data for the constituents as a function of temperature, gradients of elastic top coat properties across the coating thickness due to gradients in microstructure parameters such as porosity and column spacing, and data on creep behavior of the thermally grown oxide between bond coat and top coat.

Item URL in elib:https://elib.dlr.de/108684/
Document Type:Conference or Workshop Item (Speech)
Title:Local strain response of a TBC system under thermal mechanical loading by in-situ synchrotron X-ray Diffraction
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Bartsch, Marionmarion.bartsch (at) dlr.dehttps://orcid.org/0000-0002-3952-2928
Wischek, Janinejanine.wischek (at) dlr.deUNSPECIFIED
Meid, Carlacarla.meid (at) dlr.deUNSPECIFIED
Knipe, Kevinuniversity of central florida, orlando, fl, usaUNSPECIFIED
Manero, Albertuniversity of central florida, orlando, fl, usaUNSPECIFIED
Sofronsky, Stephenuniversity of central florida, orlando, fl, usaUNSPECIFIED
Raghavan, Seethauniversity of central florida, orlando, fl, usaUNSPECIFIED
Lacdao, Claudinecleveland state university, ohio, usaUNSPECIFIED
Karlsson, Anette M.cleveland state university, ohio, usaUNSPECIFIED
Okasinski, Johnadvanced photon source, argonne national laboratory, argonne, illinoisUNSPECIFIED
Almer, Jonathanadvanced photon source, argonne national laboratory, argonne, illinoisUNSPECIFIED
Date:7 April 2016
Refereed publication:Yes
Open Access:No
In DOAJ:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Thermal Barrier Coating, TMF, in situ X-ray diffraction
Event Title:HELSMAC - Helmholtz Symposium on Materials and Coatings for High Temperatures
Event Location:Cambridge, Großbritannien
Event Type:international Conference
Event Dates:07.-08. April 2016
Organizer:Helmholtz-Gemeinschaft und Gordon Laboratory, Cambridge University
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: Bartsch, Dr.-Ing. Marion
Deposited On:01 Dec 2016 08:53
Last Modified:01 Dec 2016 14:32

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.