Effects of interface roughness on residual stresses in thermal barrier coatings

Chun Hway Hsueh; James A. Haynes; Michael J. Lance; Paul F. Becher; Mattison K. Ferber; Edwin R. Fuller; Stephen A. Langer; W. Craig Carter; W. Roger Cannon

doi:10.1111/j.1151-2916.1999.tb01878.x

Effects of interface roughness on residual stresses in thermal barrier coatings

Chun Hway Hsueh, James A. Haynes, Michael J. Lance, Paul F. Becher, Mattison K. Ferber, Edwin R. Fuller, Stephen A. Langer, W. Craig Carter, W. Roger Cannon

Research output: Contribution to journal › Article › peer-review

101 Scopus citations

Abstract

Using a newly developed object-oriented finite-element analysis method, both an actual microstructure and model microstructures of a plasma-sprayed thermal barrier coating system were numerically simulated to analyze the full-field residual stresses of this coating system. Residual stresses in the actual microstructure were influenced by both the irregular top-coat/bond-coat interface and cracks in the top coat. By treating the microcracked top coat as a more-compliant solid microstructure, the effects of the irregular interface on residual stresses were examined. These results then could be compared to results that have been obtained by analyzing a model microstructure with a sinusoidal interface, which has been considered by some earlier investigators.

Original language	English
Pages (from-to)	1073-1075
Number of pages	3
Journal	Journal of the American Ceramic Society
Volume	82
Issue number	4
DOIs	https://doi.org/10.1111/j.1151-2916.1999.tb01878.x
State	Published - 1999

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title = "Effects of interface roughness on residual stresses in thermal barrier coatings",

abstract = "Using a newly developed object-oriented finite-element analysis method, both an actual microstructure and model microstructures of a plasma-sprayed thermal barrier coating system were numerically simulated to analyze the full-field residual stresses of this coating system. Residual stresses in the actual microstructure were influenced by both the irregular top-coat/bond-coat interface and cracks in the top coat. By treating the microcracked top coat as a more-compliant solid microstructure, the effects of the irregular interface on residual stresses were examined. These results then could be compared to results that have been obtained by analyzing a model microstructure with a sinusoidal interface, which has been considered by some earlier investigators.",

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T1 - Effects of interface roughness on residual stresses in thermal barrier coatings

AU - Hsueh, Chun Hway

AU - Haynes, James A.

AU - Lance, Michael J.

AU - Becher, Paul F.

AU - Ferber, Mattison K.

AU - Fuller, Edwin R.

AU - Langer, Stephen A.

AU - Carter, W. Craig

AU - Cannon, W. Roger

PY - 1999

Y1 - 1999

N2 - Using a newly developed object-oriented finite-element analysis method, both an actual microstructure and model microstructures of a plasma-sprayed thermal barrier coating system were numerically simulated to analyze the full-field residual stresses of this coating system. Residual stresses in the actual microstructure were influenced by both the irregular top-coat/bond-coat interface and cracks in the top coat. By treating the microcracked top coat as a more-compliant solid microstructure, the effects of the irregular interface on residual stresses were examined. These results then could be compared to results that have been obtained by analyzing a model microstructure with a sinusoidal interface, which has been considered by some earlier investigators.

AB - Using a newly developed object-oriented finite-element analysis method, both an actual microstructure and model microstructures of a plasma-sprayed thermal barrier coating system were numerically simulated to analyze the full-field residual stresses of this coating system. Residual stresses in the actual microstructure were influenced by both the irregular top-coat/bond-coat interface and cracks in the top coat. By treating the microcracked top coat as a more-compliant solid microstructure, the effects of the irregular interface on residual stresses were examined. These results then could be compared to results that have been obtained by analyzing a model microstructure with a sinusoidal interface, which has been considered by some earlier investigators.

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JO - Journal of the American Ceramic Society

JF - Journal of the American Ceramic Society

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Effects of interface roughness on residual stresses in thermal barrier coatings

Abstract

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