The reliability of silicon nitride radial turbine rotors for automotive gas turbine was evaluated with hot-gas spin test and reliability analysis. The turbine rotors were made of a newly developed silicon nitride, having a 4 point bending strength higher than 700 MPa at 1400°C. The turbine rotors withstood at a turbine tip speed of 500m/s at TIT 1400°C, the same level as the rated condition of turbine rotors for the two-shaft type automotive gas turbines. The reliability of turbine rotors is discussed in relation to the hot-gas spin test results and failure probability analysis using CARES program developed by NASA as well as three-dimensional flow analysis and finite element analysis.


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    Title :

    Hot-Gas Spin Testing of Ceramic Radial Turbine Rotor at TIT 1400 C


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    International Congress & Exposition ; 1991



    Publication date :

    1991-02-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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