摘要
本文研究用声学方法测量流体饱和孔隙介质的Biot4个弹性常数，4个弹性常数主要是通过测量水饱和的孔隙样品中的3种体波速度去计算的（流体压缩系数已知）。为了讨论和验证测量结果，我们还进行了两个实验，一是测量空气饱和样品的切变波速度和纵波速度，并求得框架的体积模量和切变模量；二是测量空气饱和样品中的慢纵波速度，并验证样品曲折度的大小。
In this paper we applied an acoustic method for the measurements of Biot elastic constants of fluid-saturated porous samples. The main part of our paper calculates the Biot's 4 elastic constants by the measurements of three kinds of bulk wave in water-saturated porous samples (the compressional coefficient of the fluid is given). For further discussions and examinations of the measured results, two additional experiments were carried out. One is the measurement of compressional and shear waves of air-saturated samples and the calculation of the compressional modulus and shear modulus of the frame, the other is the measurement of the second compressional wave of air-saturated samples and the examination of the tortuosity of the samples.
出处
《应用声学》
CSCD
北大核心
1998年第6期1-8,共8页
Journal of Applied Acoustics
基金
国家自然科学基金
关键词
流体饱和
多孔材料
Biot弹性常数
声学测量
Fluid-saturated porous material(FSPM), Biot elastic constants, Slow wave, Tortuosity
