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Abstract : The mechanical behavior of SiO2 - aerogels was investigated in ultrasonic and static compression experiments. In our paper we present data on the sound velocity as a function of density, of external load and internal gas pressure. We also demonstrate local variation of sound velocity over distances of a few mm. Furthermore we investigated the sintering behavior of aerogels with respect to temperature and duration of treatment and derived scaling laws for the elastic constants.





Autor: J. Cross R. Goswin R. Gerlach J. Fricke

Fuente: https://hal.archives-ouvertes.fr/



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