Abstract The temperature dependent material characteristics of a layered panel are experimentally measured using a Thermal Mechanical Analysis (TMA) configuration. The temperature dependent wave dispersion characteristics of the panel are subsequently computed using a Wave Finite Element Method (WFEM). The results are experimentally validated by measurements on the dynamic response of the structure for various temperatures. The WFEM predictions are eventually used within a wave-context SEA approach in order to calculate the temperature dependent Sound Transmission Loss (STL) of the layered panel. Results on the STL for temperatures varying between −100 °C to 160 °C are computed for a structure operating at sea level. The importance of the glass transition region on the panelʼs vibroacoustic response is exhibited and discussed. The acoustic transparency of a composite structure operating at higher altitudes is also discussed.


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    Title :

    Thermal effects on the sound transmission through aerospace composite structures


    Contributors:
    Chronopoulos, D. (author) / Ichchou, M. (author) / Troclet, B. (author) / Bareille, O. (author)

    Published in:

    Publication date :

    2013-08-11


    Size :

    8 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English





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