skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: A method for measuring non-linear elastic properties of thermal barrier coatings

Abstract

Accurate characterization of the elastic properties of thermal barrier coatings (TBC`s) is important for failure prediction. Thermally sprayed coatings often exhibit anisotropic and nonlinear elastic properties due to the coating microstructure that results from the thermal spray process. A method was developed for determining the elastic behavior of TBC`s on substrates by measuring the in-plane modulus as a function of residual coating stress. The in-plane modulus was determined by resonant frequency measurement, and the residual stress was measured from the substrate curvature. The residual stress was varied both by increasing the temperature of the TBC and substrate and by applying compressive plastic strain to the metal substrate. The stress-strain behavior of the TBC was derived from the data for modulus versus residual stress, and significant nonlinear elastic behavior was observed.

Authors:
; ; ;
Publication Date:
Research Org.:
General Electric Co., Schenectady, NY (United States). Corporate Research and Development Center
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
90407
Report Number(s):
DOE/MC/30244-95/C0481; CONF-9509182-1
ON: DE95012913
DOE Contract Number:  
AC21-93MC30244
Resource Type:
Conference
Resource Relation:
Conference: 1995 National thermal spray conference, Houston, TX (United States), 11-15 Sep 1995; Other Information: PBD: [1995]
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 20 FOSSIL-FUELED POWER PLANTS; GAS TURBINES; THERMAL BARRIERS; SPRAYED COATINGS; ELASTICITY; YTTRIUM OXIDES; ZIRCONIUM OXIDES; RESIDUAL STRESSES; YOUNG MODULUS; MEASURING METHODS

Citation Formats

Johnson, C A, Ruud, J A, Kaya, A C, and deLorenzi, H G. A method for measuring non-linear elastic properties of thermal barrier coatings. United States: N. p., 1995. Web.
Johnson, C A, Ruud, J A, Kaya, A C, & deLorenzi, H G. A method for measuring non-linear elastic properties of thermal barrier coatings. United States.
Johnson, C A, Ruud, J A, Kaya, A C, and deLorenzi, H G. Thu . "A method for measuring non-linear elastic properties of thermal barrier coatings". United States. https://www.osti.gov/servlets/purl/90407.
@article{osti_90407,
title = {A method for measuring non-linear elastic properties of thermal barrier coatings},
author = {Johnson, C A and Ruud, J A and Kaya, A C and deLorenzi, H G},
abstractNote = {Accurate characterization of the elastic properties of thermal barrier coatings (TBC`s) is important for failure prediction. Thermally sprayed coatings often exhibit anisotropic and nonlinear elastic properties due to the coating microstructure that results from the thermal spray process. A method was developed for determining the elastic behavior of TBC`s on substrates by measuring the in-plane modulus as a function of residual coating stress. The in-plane modulus was determined by resonant frequency measurement, and the residual stress was measured from the substrate curvature. The residual stress was varied both by increasing the temperature of the TBC and substrate and by applying compressive plastic strain to the metal substrate. The stress-strain behavior of the TBC was derived from the data for modulus versus residual stress, and significant nonlinear elastic behavior was observed.},
doi = {},
url = {https://www.osti.gov/biblio/90407}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1995},
month = {6}
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

Save / Share: