Lifetime prediction on gas turbine components with thermal barrier coatings, using micromechanics

• Autorzy: Sjostrom, S. , Burman, J. , Jinnestrand, M.
• Języki publikacji: EN

Abstrakty

EN

Lifetime prediction of thermal barrier coatings on gas turbine hot components is described. Existing modelling strategies are discussed. A more fundamental strategy, based on micromechanical analyses of the coating system is finally presented.

Słowa kluczowe

PL

mikromechanika; powłoka termoizolacyjna; turbina gazowa

EN

FE analysis; low-cycle fatigue; gas turbine hot components; thermal barrier coatings; micromechanics

• Czasopismo: International Journal of Applied Mechanics and Engineering
• Rocznik: 2002
• Tom: Vol. 7, no 1
• Strony: 205-220
• Opis fizyczny: Bibliogr. 9 poz., rys., wykr.

Twórcy

autor

Sjostrom, S.

• Department RGS, ALSTOM Power Sweden SB-61282 Finspang, Sweden,
• Department of Mechanical Engineering, Linkoping University SE-581 83 Linkoping, Sweden

autor

Burman, J.

• Department of Mechanical Engineering Lulea University of Technology SE-971 87 Lulea, Sweden

autor

Jinnestrand, M.

• Department of Mechanical Engineering, Linkoping University SE-581 83 Linkoping, Sweden

Bibliografia

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• [2] Cruse T.A., Stewart S.E. and Ortiz M. (1988): Thermal barrier coating life predictions model development. - Journal of Engineering for Gas Turbines and Power, vol. 110, pp.610-616.
• [3] Evans A.G. and Hutchinson J.W. (1984): On the mechanics of delamination and spalling in compressed films. - International Journal of Solids and Structures, vol.20, pp.455-466.
• [4] Evans A.G. and Hutchinson J.W. (1995): The thermomechanical integrity of thin films and multilayers. - Acta Metallurgica et Materialia, vol.43, pp.2507-2530.
• [5] Evans A.G., He M.Y. and Hutchinson J.W. (1997): Effect of interface undulations on the thermal fatigue of thin films and scales on metal substrates. - Acta Materialia, vol.47, pp.3543-3554.
• [6] Jinnestrand M. and Sjostrom S. (2001): Investigation by 3D FE simulations of delamination crack initiation in TBC caused by alumina growth. - Surface and Coatings Technology, vol. 135, pp. 185-195.
• [7] Miller R.A. (1984): Oxidation-based model for thermal barrier coating life. - Journal of the American Ceramic Society, vol.67, pp.517-521.
• [8] Sjostrom S. (1998): Mechanisms of interface fracture in ceramic thermal barrier coatings, In: Proceedings of the 4th International Conference on Computational Engineering Science. - Atlanta, GA, U.S.A., April 10-14, 1998, pp.1598-1603.
• [9] Wright J.K., Williamson R.L., Renusch D., Veal B., Grimsditch M., Hou P.Y. and Cannon R.M. (1999): Residual stresses in convoluted oxide scales. - Materials Science and Engineering, vol.A262, pp.246-255.