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ANSTO Publications Online >
ANSTO Publications >
Scientific and Technical Reports >
Please use this identifier to cite or link to this item:
http://apo.ansto.gov.au/dspace/handle/10238/305
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| Title: | Application of acoustical methods to the measurement of water content in sand. |
| Authors: | Nazarov, VE Radostin, AV Stepanyants, YA Bennett, JW |
| Issue Date: | Oct-2000 |
| Publisher: | Australian Nuclear Science and Technology Organisation |
| Abstract: | Results of laboratory experiments on the propagation of high-frequency acoustic waves (f = 100 kHz) in a glass tube filled with river sand are presented. Several sand samples have been used with different water content: dry unsaturated and completely water saturated. It is shown that the dissipative coefficient of acoustic waves decreases with increasing wave amplitude. This 'self-brightening' phenomenon takes place over the whole range of moisture content from zero to 100% but its degree of manifestation depends on the moisture content. The exponent of the dissipative nonlinearity α is found to be the most sensitive parameter to the moisture content and is determined on the basis of measurements. It is considered to be a good indicator of water content in porous media and provides an opportunity to measure water content in such materials indirectly by means of an acoustic method. A simple phenomenological model is presented to explain the experimental results. |
| URI: | http://apo.ansto.gov.au/dspace/handle/10238/305 |
| ISBN: | 0642599793 |
| ISSN: | 10307746 |
| Appears in Collections: | Scientific and Technical Reports |
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