Ultrasonic Velocity Measurements in Porous Materials
Sintered materials with connected pores filled with fluid (air or water) has been studied using ultrasonic waves. The main applications of these materials are rocks, sediments and filters. The materials used in this study are both metallic and non-metallic structures with particle sizes ranging from 15 μ to 700 μ and porosity concentration up to 40%. Wave propagation in these two phase materials has been studied by Biot [J.A.S.A. 28, 168 (1956)] who predicted the existence of a third bulk wave — a slow compressional wave.
In this work wave velocities and attenuation measurements have been carried out and related to porosity, particle size and consolidation of these composite materials. The purpose of this presentation is to report results on the ultrasonic characterization of poroelastic properties of these Biot solids.
KeywordsCompressional Wave Porous Sample Bulk Wave Ultrasonic Wave Propagation Ultrasonic Velocity Measurement
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