For large, complex spacecraft structural systems, the objectives of the modal test are outlined. Based on these objectives, the comparison criteria for the modal test methods, namely, the broadband excitation and the sine dwell methods are established. Using the Galileo spacecraft modal test and the Centaur G Prime upper-stage vehicle modal test as examples, the relative advantage or disadvantage of each of these methods is examined. The usefulness or shortcoming of the methods is given from a practicing engineer's view point.


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    Title :

    Sine dwell or broadband methods for modal testing


    Additional title:

    Sinusverzoegerungs- oder Breitbandmethoden fuer Modaltests


    Contributors:
    Chen, J.C. (author) / Wada, B.K. (author)

    Published in:

    AIAA Journal ; 26 , 6 ; 733-737


    Publication date :

    1988


    Size :

    5 Seiten, 4 Bilder, 6 Tabellen, 11 Quellen



    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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