A ceramic gas turbine engine is one of the most promising candidates for future automotive engines. Among the different ceramic components required to build such an engine, the turbine rotor is thought to be the most difficult to fabricate with ceramics. This is because the rotor has a very complex shape and is subjected to high stess. This paper describes reliability evaluations of ceramic radial turbine rotors for a gas turbine engine and for a turbocharger. Each rotor was analyzed using a probabilisitc approach. This included the use of finite element analysis, Weibull's distribution function for brittle materials and lifetime predictions based on slow crack growth. The influence of blade thickness on foreign particle damage to a ceramic rotor is also discussed. The results of these evaluations led to the design and development of a highly reliable turbocharger rotor, which has been used since October 1985 in Nissan passenger cars sold in the domestic market.


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    Titel :

    Development of ceramic turbine rotors


    Weitere Titelangaben:

    Entwicklung von keramischen Turbinenrotoren


    Beteiligte:
    Katayama, K. (Autor:in) / Sasaki, M. (Autor:in) / Itoh, T. (Autor:in)

    Erschienen in:

    ASME-Papers ; Jun ; 1-8


    Erscheinungsdatum :

    1988


    Format / Umfang :

    8 Seiten, 18 Bilder, 2 Tabellen, 8 Quellen


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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    Styhr, K. H. | SAE Technical Papers | 1974


    Methods for Improving Reliability in Ceramic Turbine Rotors

    Turner, David A. / Groseclose, Lance E. | SAE Technical Papers | 1985


    Computer x-ray tomography of ceramic turbine rotors

    Goebbels,J. / Heidt,H. / Kettschau,A. et al. | Kraftfahrwesen | 1986


    Development of a Ceramic Blade-Superalloy Disk Attachment For Gas Turbine Rotors

    Walker, Bryant H. / Carruthers, William D. | SAE Technical Papers | 1976


    Development of Silicon Nitride Turbine Rotors

    Miyauchi, J. / Kobayashi, Y. | SAE Technical Papers | 1985