Modal testing has become very popular today for dynamic structural definition and problem resolution of a multitude of dynamic problems. A criterion of purity is presented which is applicable to all modal data regardless of the method of excitation. The modal acceptability and purity ratio allows a one-number linear ratio that describes a percentage deviation from zero, where zero is defined as a pure, natural mode. This ratio was used on the Space Shuttle modal program to provide instant visibility of modal data quality as well as a real-time guide to potential problems associated with certain modes.


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    Title :

    Modal Acceptability and Purity Ratio


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    Aerospace Meeting ; 1978



    Publication date :

    1978-02-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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