Numerical Analysis of EB-PVD Thermal Barrier Coatings under Thermal-Mechanical Coupled Environment

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Numerical method was used to simulate the stress state of thermal barrier coatings (TBCs) under thermal-mechanical coupled environment. The finite element (FE) model was built as hollow tube and boundary conditions including heating rate, cooling air convection and mechanical loadings were considered. The maximum stress locates where maximum temperature gradients is formed. This failure mode is consistent with the experimental results.

Info:

Periodical:

Materials Science Forum (Volumes 546-549)

Edited by:

Yafang Han et al.

Pages:

1795-1799

Citation:

H. Peng et al., "Numerical Analysis of EB-PVD Thermal Barrier Coatings under Thermal-Mechanical Coupled Environment", Materials Science Forum, Vols. 546-549, pp. 1795-1799, 2007

Online since:

May 2007

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$38.00

[1] Nitta A. Gas turbine and ultrahigh temperature materials. J Japan Soc Mech. Eng 1996: 99(929): 251-256.

[2] R.A. Miller, J. Am. Ceram. Soc. 67(1984)517.

[3] N.P. Padture, E. H. Jordan, M. Gell, Science 296(2002)280.

[4] S.M. Meier, D. M. Nissley, K.D. Shehhler, S. Bose, J. Eng. Gas Turbine Power 114 (1992)259.

[5] H. J. Grabke, M. W. Brumm, and B. Wagemann, Mater. Corros. 47, 675 (1996).

[6] Nissley, D. M. J. Thermal Spray Tech., 1997, 6(1), 91.

[7] Newaz, G. M., Nusier, S. Q. and Chaudhury, Z. A. J. Eng. Mater. Tech., 1998, 120, 149.

[8] Cheng, J. Jordan, E. H. , Barber, B. and Gell, M. Acta. Mater., 1998, 46(16), 5839.

[9] Sergo, V. and Clarke, D. R. J. Am. Ceram. Soc., 1998, 81(12), 3237. -1. 5x10.

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