8 March 2014 Thermoacoustic effects on layered structures for the evaluation of structural parameters
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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 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 panel’s vibroacoustic response is exhibited and discussed.
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Olivier A. Bareille, Dimitrios Chronopoulos, Mohamed N. Ichchou, Bernard Troclet, "Thermoacoustic effects on layered structures for the evaluation of structural parameters", Proc. SPIE 9061, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2014, 906138 (8 March 2014); doi: 10.1117/12.2046321; https://doi.org/10.1117/12.2046321
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