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Monitoring Local Strain in a Thermal Barrier Coating System Under Thermal Mechanical Gas Turbine Operating Conditions

Manero, Albert and Sofronsky, Stephen and Knipe, Kevin and Meid, Carla and Wischek, Janine and Okasinski, John and Almer, Jonathan and Karlsson, Anette M. and Raghavan, Seetha and Bartsch, Marion (2015) Monitoring Local Strain in a Thermal Barrier Coating System Under Thermal Mechanical Gas Turbine Operating Conditions. JOM: Journal of the Minerals, Metals and Materials Society, 67 (7), pp. 1528-1539. Springer. DOI: 10.1007/s11837-015-1399-3 ISSN 1047-4838

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Abstract

Advances in aircraft and land-based turbine engines have been increasing the extreme loading conditions on traditional engine components and have incited the need for improved performance with the use of protective coatings. These protective coatings shield the load-bearing super alloy blades from the high-temperature combustion gases by creating a thermal gradient over their thickness. This addition extends the life and performance of blades. A more complete understanding of the behavior, failure mechanics, and life expectancy for turbine blades and their coatings is needed to enhance and validate simulation models. As new thermal-barrier-coated materials and deposition methods are developed, strides to effectively test, evaluate, and prepare the technology for industry deployment are of paramount interest. Coupling the experience and expertise of researchers at the University of Central Florida, The German Aerospace Center, and Cleveland State University with the world-class synchrotron x-ray beam at the Advanced Photon Source in Argonne National Laboratory, the synergistic collaboration has yielded previously unseen measurements to look inside the coating layer system for in situ strain measurements during representative service loading. These findings quantify the in situ strain response on multilayer thermal barrier coatings and shed light on the elastic and nonelastic properties of the layers and the role of mechanical load and internal cooling variations on the response. The article discusses the experimental configuration and development of equipment to perform in situ strain measurements on multilayer thin coatings and provides an overview of the achievements thus far.

Item URL in elib:https://elib.dlr.de/98271/
Document Type:Article
Title:Monitoring Local Strain in a Thermal Barrier Coating System Under Thermal Mechanical Gas Turbine Operating Conditions
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Manero, AlbertUniversity of Central Florida, Orlando, FL, USAUNSPECIFIED
Sofronsky, StephenUniversity of Central Florida, Orlando, FL, USAUNSPECIFIED
Knipe, KevinUniversity of Central Florida, Orlando, FL, USAUNSPECIFIED
Meid, Carlacarla.meid (at) dlr.deUNSPECIFIED
Wischek, Janinejanine.wischek (at) dlr.deUNSPECIFIED
Okasinski, JohnAdvanced Photon Source, Argonne National Laboratory, Argonne, IllinoisUNSPECIFIED
Almer, JonathanAdvanced Photon Source, Argonne National Laboratory, Argonne, IllinoisUNSPECIFIED
Karlsson, Anette M.Cleveland State University, Ohio, USAUNSPECIFIED
Raghavan, SeethaUniversity of Central Florida, Orlando, FL, USAUNSPECIFIED
Bartsch, Marionmarion.bartsch (at) dlr.deUNSPECIFIED
Date:July 2015
Journal or Publication Title:JOM: Journal of the Minerals, Metals and Materials Society
Refereed publication:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:67
DOI :10.1007/s11837-015-1399-3
Page Range:pp. 1528-1539
Publisher:Springer
ISSN:1047-4838
Status:Published
Keywords:Thermal Barrier Coatings, X-ray diffraction, strain measurement, thermal mehanical cycling
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:23 Sep 2015 13:46
Last Modified:08 Mar 2018 18:26

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