This article presents the damping effectiveness of free-layer damping materials through standard Oberst bar testing, solid plate excitation (RTCB) testing and prediction through numerical schemes. The main objective is to compare damping results from various industry test methods to performance in an automotive body structure. Existing literature on laboratory and vehicle testing of free-layer viscoelastic damping materials has received significant attention in recent history. This has created considerable confusion regarding the appropriateness of different test methods to measure material properties for damping materials/treatments used in vehicles. The ability to use the material properties calculated in these tests in vehicle CAE models has not been extensively examined. Existing literature regarding theory and testing for different industry standard damping measurement techniques is discussed. This discussion is followed by the comparison of damping treatments through laboratory testing.


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    Title :

    Material damping properties - Lab tests vs. in-vehicle performance


    Additional title:

    Vibrationsdämpfungseigenschaften verschiedener Materialien - Labortests und Prüfung im Einsatz


    Contributors:
    Black, M.D. (author) / Rao, M.D. (author)

    Published in:

    Sound and Vibration ; 35 , 8 ; 24-28


    Publication date :

    2001


    Size :

    5 Seiten, 12 Bilder, 1 Tabelle, 13 Quellen



    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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