Nonlinear parameter estimation in water-saturated sandy sediment with difference frequency acoustic wave SCIE SCOPUS

Cited 11 time in WEB OF SCIENCE Cited 12 time in Scopus
Title
Nonlinear parameter estimation in water-saturated sandy sediment with difference frequency acoustic wave
Author(s)
Kim, Byoung-Nam; Yoon, Suk Wang
KIOST Author(s)
Kim, Byoung Nam(김병남)
Alternative Author(s)
김병남
Publication Year
2009-05
Abstract
Difference frequency acoustic wave from nonlinear interaction of two primary acoustic waves at frequencies of 76 and 114 kHz was utilized with a parametric acoustic array theory to estimate the nonlinearity parameter of water-saturated sandy sediment. Such nonlinearity parameter can be used as background information for the nonlinear acoustic investigation of bottom or sub-bottom pro. ling in the ocean sandy sediments. Because of its lower attenuation the difference frequency acoustic wave method can be usefully applied to estimate the nonlinearity parameter of ocean sediment in the ocean as well as under laboratory conditions. The nonlinearity parameter beta for the water-saturated sandy sediment used as a reference in this study was estimated as beta = 80.5 +/- 5.1 at the difference frequency of 38 kHz. It was agreed very well with that estimated at the difference frequency of 67 kHz, when two primary frequencies were 137 and 204 kHz. The estimated nonlinearity parameter of water-saturated sandy sediment in this study was also compared and analyzed with those estimated in previously published literatures. It was suggested that the difference frequency wave method used to estimate the nonlinearity parameter of water-saturated sandy sediment can be employed as a good method to estimate the nonlinearity parameters of fluid-like granular media. (C) 2008 Elsevier B. V. All rights reserved.
ISSN
0041-624X
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/4296
DOI
10.1016/j.ultras.2008.11.002
Bibliographic Citation
ULTRASONICS, v.49, no.4-5, pp.438 - 445, 2009
Publisher
ELSEVIER SCIENCE BV
Subject
MARINE-SEDIMENTS; ELASTIC-WAVES; MODEL; PROPAGATION; BACKSCATTER; GENERATION; SCATTERING; SANDSTONE; DENSITY; MEDIA
Keywords
Nonlinearity parameter; Difference frequency wave; Parametric acoustic array; Water-saturated sandy sediment
Type
Article
Language
English
Document Type
Article
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