Estimating frame bulk and shear moduli of two double porosity layers by ultrasound transmission

Autor:	Huaqing Wang, Hervé Franklin, Ruonan Bai, Abdellah Alem, Alain Tinel
Rok vydání:	2016
Předmět:	Physics Acoustics and Ultrasonics Biot number Borosilicate glass business.industry 0208 environmental biotechnology Plane wave Tobermorite 02 engineering and technology Low frequency 020801 environmental engineering Moduli Optics Shear (geology) Composite material Porosity business
Zdroj:	Ultrasonics. 70:211-220
ISSN:	0041-624X
Popis:	The acoustic plane wave transmission by water saturated double porosity media is investigated. Two samples of double porosity media assumed to obey Berryman and Wang (BW) extension (Berryman and Wang, 1995, 2000) of Biot’s theory in the low frequency regime are under consideration: ROBU® (pure binder-free borosilicate glass 3.3 manufactured to form the individual grains) and Tobermorite 11 A (the individual porous cement grains show irregular shapes). The de facto gap existing between theoretical and experimental data can be minimized by modifying adequately two of the parameters estimated from triaxial tests: the frame bulk and shear moduli. The frequency dependent imaginary parts that follow necessary from the minimization are in relation with the energy losses due to contact relaxation and friction between grains.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::77c39a0ce61d1e68e05e7939f316cb7a https://doi.org/10.1016/j.ultras.2016.05.004 Zobrazit plný text záznamu Full Text from ScienceDirect