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Acoustical Physics, Vol. 47, No. 6, 2001, pp. 755–757. Translated from AkusticheskiÏ Zhurnal, Vol. 47, No. 6, 2001, pp. 853–855. Original Russian Text Copyright © 2001 by Badmaev, Bal’zhinov, Ochirova. SHORT COMMUNICATIONS Experimental Study of Viscoelastic Properties of Liquids by Using Resonators B. B. Badmaev, S. A. Bal’zhinov, and E. R. Ochirova Buryat Scientific Center, Siberian Division, Russian Academy of Sciences, ul. Sakh’yanovoÏ 8, Ulan-Udé, 670047 Russia e-mail: lmf@fpsrv.bsc.buryatia.ru Received November 27, 2000 Earlier [1], the presence of shear elasticity in thin tions, the real shear modulus G' and the mechanical loss layers of liquids several microns thick was observed at tangent tan q are given by the following formulas a frequency of 74 · 10 Hz. This result attests that an unknown low-frequency viscoelastic relaxation process G'4 = p Mf D f ' H /S, (2) occurs in the liquids. The studies showed that the mechanical loss tangent was less than unity. This sug- tan q == G''/G' D f ''/D f ', (3) gests that the relaxation frequency of this process was where D f ' and D f '' are the real and imaginary frequency less than the frequency used in the experiment. There- shifts and
Acoustical Physics – Springer Journals
Published: Nov 1, 2001
Keywords: Acoustics
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