The influence of a strong acoustic cw wave on a weak signal in rock

We are conducting studies of the effect of a strong pump wave on a probe wave in rock. Specifically, we are measuring resonance frequencies and quality factors (applying linear resonant ultrasound spectroscopy) for a relatively weak probe wave in the presence of a strong, cw pump wave. Experiments c...

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Bibliographic Details
Published in:The Journal of the Acoustical Society of America 2001-05, Vol.109 (5_Supplement), p.2372-2372
Main Authors: Soustova, Irina, Nazarov, Veniamin, Sutin, Alexander, Radostin, Andrey
Format: Article
Language:English
Online Access:Get full text
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Summary:We are conducting studies of the effect of a strong pump wave on a probe wave in rock. Specifically, we are measuring resonance frequencies and quality factors (applying linear resonant ultrasound spectroscopy) for a relatively weak probe wave in the presence of a strong, cw pump wave. Experiments conducted in sandstone demonstrate a shift of the resonance frequency and increasing of Q factor in the presence of the low frequency pump wave. The model describing this phenomenon is based on including small hysteretic loops in the stress–strain dependence for the probe wave. The hysteretic loop parameters depend on the loop position on the stress–strain dependence for the pump wave. [Work was partially supported by International Science Technical Center, Grant No. 1369.]
ISSN:0001-4966
1520-8524
DOI:10.1121/1.4744349