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

Synchrotron X-Ray Measurement Techniques for Thermal Barrier Coated Cylindrical Samples under Thermal Gradients

Siddiqui, Sanna F. and Knipe, Kevin and Manero, Albert and Meid, Carla and Janine, Wischek and Okasinski, John and Almer, Jonathan and Karlsson, Anette and Bartsch, Marion and Raghavan, Seetha (2013) Synchrotron X-Ray Measurement Techniques for Thermal Barrier Coated Cylindrical Samples under Thermal Gradients. Review of Scientific Instruments, 84, pp. 1-7. American Institute of Physics (AIP). DOI: 10.1063/1.4817543 ISSN 0034-6748

Full text not available from this repository.

Official URL: http://dx.doi.org/10.1063/1.4817543

Abstract

Measurement techniques to obtain accurate in situ synchrotron strain measurements of thermal barrier coating systems (TBCs) applied to hollow cylindrical specimens are presented in this work. The Electron Beam Physical Vapor Deposition coated specimens with internal cooling were designed to achieve realistic temperature gradients over the TBC coated material such as that occurring in the turbine blades of aeroengines. Effects of the circular cross section on the x-ray diffraction (XRD) measurements in the various layers, including the thermally grown oxide, are investigated using high energy synchrotron x-rays.Multiple approaches for beam penetration including collection, tangential, and normal to the layers, along with variations in collection parameters are compared for their ability to attain high-resolution XRD data from the internal layers. This study displays the ability to monitor in situ, the response of the internal layers within the TBC, while implementing a thermal gradient across the thickness of the coated sample. The thermal setup maintained coating surface temperatures in the range of operating conditions, while monitoring the substrate cooling, for a controlled thermal gradient. Through variation in measurement location and beam parameters, sufficient intensities are obtained from the internal layers which can be used for depth resolved strain measurements. Results are used to establish the various techniques for obtaining XRD measurements through multi-layered coating systems and their outcomes will pave the way towards goals in achieving realistic in situ testing of these coatings.

Item URL in elib:https://elib.dlr.de/84018/
Document Type:Article
Title:Synchrotron X-Ray Measurement Techniques for Thermal Barrier Coated Cylindrical Samples under Thermal Gradients
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Siddiqui, Sanna F.Department of Mechanical and Aerospace Engineering, University of Central Florida, Orlando, FL 32816,UNSPECIFIED
Knipe, KevinDepartment of Mechanical and Aerospace Engineering, University of Central Florida, Orlando, FL 32816,UNSPECIFIED
Manero, AlbertDepartment of Mechanical and Aerospace Engineering, University of Central Florida, Orlando, FL 32816,UNSPECIFIED
Meid, Carlacarla.meid (at) dlr.deUNSPECIFIED
Janine, Wischekjanine.wischek (at) dlr.deUNSPECIFIED
Okasinski, JohnX-Ray Science Division, Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439,UNSPECIFIED
Almer, JonathanX-Ray Science Division, Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439,UNSPECIFIED
Karlsson, AnetteCleveland State University 2121 Euclid Avenue, Cleveland, OH 44115, USAUNSPECIFIED
Bartsch, Marionmarion.bartsch (at) dlr.deUNSPECIFIED
Raghavan, SeethaDepartment of Mechanical and Aerospace Engineering, University of Central Florida, Orlando, FL 32816,UNSPECIFIED
Date:2013
Journal or Publication Title:Review of Scientific Instruments
Refereed publication:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:84
DOI :10.1063/1.4817543
Page Range:pp. 1-7
Publisher:American Institute of Physics (AIP)
ISSN:0034-6748
Status:Published
Keywords:Synchrotron X-ray, strain measurement, thermal mechanical cycling, thermal barrier coating
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Propulsion Systems (old)
DLR - Research area:Aeronautics
DLR - Program:L ER - Engine Research
DLR - Research theme (Project):L - Virtual Engine and Validation Methods (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Research > Experimental and Numerical Methods
Deposited By: Bartsch, Dr.-Ing. Marion
Deposited On:29 Aug 2013 11:08
Last Modified:08 Mar 2018 18:28

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.